源码在分支master

工厂模式

把具体创建产品的细节封装起来，你要什么产品，我给你什么产品即可。

简单工厂模式

工厂方法模式

缓存层：抽象类

抽象工厂模式

缓存层是：接口

原型模式

问题：

原型模式的源码分析：Spring 中的 getBean()这个方法低层实现。是否选择单例、和原型模式。

自己的Code

/******************************************************************************** Package: com.example.demo.design.prototype* Type:    User* Date:    2022-03-06 14:22** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.prototype;import lombok.Data;
import lombok.extern.slf4j.Slf4j;/*** 功能描述： 原型模式分析：*  无线创建相同对象  但是对象的地址值都不是相同的*** @author Songxianyang* @date 2022-03-06 14:22*/
@Data
@Slf4j
public class User implements Cloneable {private  String name;private int age;public User(String name, int age) {this.name = name;this.age = age;}@Overridepublic String toString() {return "User{" + "name='" + name + '\'' + ", age=" + age + '}';}@Overrideprotected Object clone()  {User user =null;try {user = (User) super.clone();} catch (CloneNotSupportedException e) {log.error("clone: ", "无法或不应克隆对象");}return user;}
}

实现：

/******************************************************************************** Package: com.example.demo.design.prototype* Type:    Test* Date:    2022-03-06 14:29** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.prototype;/*** 功能描述：** @author Songxianyang* @date 2022-03-06 14:29*/
public class Test {public static void main(String[] args) {User user = new User("sxy", 22);System.out.println(user);System.out.println(user.clone());System.out.println(user.clone());System.out.println(user==user.clone());}
}

建造者模式

源码盘点

项目截图

/******************************************************************************** Package: com.example.demo.design.builder* Type:    BuilderHouse* Date:    2022-03-06 21:14** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.builder;/*** 功能描述： 抽象的一个构建者** @author Songxianyang* @date 2022-03-06 21:14*/
public interface BuilderHouse {House house = new House();/*** 地基*/void foundation();/*** 砌墙*/void buildWall();/*** 封顶*/void capping();/*** 构建对象* @return house*/default House builder() {return house;}
}

/******************************************************************************** Package: com.example.demo.design.builder* Type:    Commander* Date:    2022-03-06 21:29** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.builder;/*** 功能描述： 指挥者:负责怎么去执行 ：行为** @author Songxianyang* @date 2022-03-06 21:29*/
public class Commander {BuilderHouse builderHouse = null;public Commander(BuilderHouse builderHouse) {this.builderHouse = builderHouse;}public House builder () {builderHouse.foundation();builderHouse.buildWall();builderHouse.capping();return builderHouse.builder();}
}

/******************************************************************************** Package: com.example.demo.design.builder* Type:    HighHouse* Date:    2022-03-06 21:28** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.builder;/*** 功能描述： 高楼** @author Songxianyang* @date 2022-03-06 21:28*/
public class HighHouse implements BuilderHouse {@Overridepublic void foundation() {System.out.println("高楼打地基");}@Overridepublic void buildWall() {System.out.println("高楼砌墙");}@Overridepublic void capping() {System.out.println("高楼 吊顶");}
}

/******************************************************************************** Package: com.example.demo.design.builder* Type:    House* Date:    2022-03-06 21:11** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.builder;import lombok.Data;/*** 功能描述： 房子是一个产品类** @author Songxianyang* @date 2022-03-06 21:11*/
@Data
public class House {private String spar;private Integer height;
}

/******************************************************************************** Package: com.example.demo.design.builder* Type:    PlainHouse* Date:    2022-03-06 21:20** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.builder;/*** 功能描述：普通房子 实现类** @author Songxianyang* @date 2022-03-06 21:20*/
public class PlainHouse implements BuilderHouse {@Overridepublic void foundation() {System.out.println("普通房子打地基");}@Overridepublic void buildWall() {System.out.println("普通房子砌墙");}@Overridepublic void capping() {System.out.println("普通房子 吊顶");}
}

/******************************************************************************** Package: com.example.demo.design.builder* Type:    Test* Date:    2022-03-06 21:33** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.builder;/*** 功能描述：测试类** @author Songxianyang* @date 2022-03-06 21:33*/
public class Test {public static void main(String[] args) {//普通房子PlainHouse plainHouse = new PlainHouse();Commander commander = new Commander(plainHouse);commander.builder();System.out.println("-------------------");//高楼大厦HighHouse highHouse = new HighHouse();Commander high = new Commander(highHouse);high.builder();}
}

测试截图

源码分析

new StringBuilder();
建造者 建造一个产品需要那些步骤：Appendable
具体建造出什么样的抽象对象具有什么功能：AbstractStringBuilder
指挥者：具体指挥返回什么样的对象StringBuilder、StringBuffer

适配器模式-结构化

类适配器

上代码

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Voltage* Date:    2022-03-12 10:14** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.classadapter;/*** 功能描述：5V电压转换器** @author Songxianyang* @date 2022-03-12 10:14*/
public class Change extends Source implements VoltageAdapter {@Overridepublic String output5v() {String v220 = super.output();v220="5v";return v220;}
}

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Phone* Date:    2022-03-12 10:28** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.classadapter;/*** 功能描述：手机充电** @author Songxianyang* @date 2022-03-12 10:28*/
public class Phone {private VoltageAdapter adapter;public Phone(VoltageAdapter adapter) {this.adapter = adapter;}public void chargePhone() {System.out.println("我得手机以及充上"+adapter.output5v());}
}

/******************************************************************************** Package: com.example.demo.design.adapter* Type:    Source* Date:    2022-03-12 10:03** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.classadapter;/*** 类适配器* 功能描述：电源类220v   被适配器** @author Songxianyang* @date 2022-03-12 10:03*/
public class Source {public String output() {return "220v";}
}

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Test* Date:    2022-03-12 10:34** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.classadapter;/*** 功能描述：** @author Songxianyang* @date 2022-03-12 10:34*/
public class Test {public static void main(String[] args) {Phone phone = new Phone(new Change());phone.chargePhone();}
}

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    SourceAdapter* Date:    2022-03-12 10:06** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.classadapter;/*** 功能描述： 充电器适配器** @author Songxianyang* @date 2022-03-12 10:06*/
public interface VoltageAdapter {/*** 输出5v电压* @return s*/String output5v();
}

对象适配器

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Voltage* Date:    2022-03-12 10:14** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.objadapter;/*** 功能描述：5V电压转换器 ：适配器** @author Songxianyang* @date 2022-03-12 10:14*/
public class Change {private Source source = new Source();public String output5v() {String v220 = source.output();v220="5v";return v220;}
}

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Phone* Date:    2022-03-12 10:28** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.objadapter;/*** 功能描述：手机充电** @author Songxianyang* @date 2022-03-12 10:28*/
public class Phone {private Change change= new Change();public void chargePhone() {System.out.println("我得手机以及充上"+change.output5v());}
}

/******************************************************************************** Package: com.example.demo.design.adapter* Type:    Source* Date:    2022-03-12 10:03** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.objadapter;/*** 类适配器* 功能描述：电源类220v   被适配器** @author Songxianyang* @date 2022-03-12 10:03*/
public class Source {public String output() {return "220v";}
}

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Test* Date:    2022-03-12 10:34** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.objadapter;/*** 功能描述：** @author Songxianyang* @date 2022-03-12 10:34*/
public class Test {public static void main(String[] args) {Phone phone = new Phone();phone.chargePhone();}
}

接口适配器

结构：

代码以及优化

/******************************************************************************** Package: com.example.demo.design.adapter.interfaceadapter* Type:    AVoltageAdapter* Date:    2022-03-12 15:48** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.interfaceadapter;/*** 功能描述：抽象的一个多种电压 初始化** @author Songxianyang* @date 2022-03-12 15:48*/
public abstract class AbsVoltageAdapter implements IVoltageAdapter {@Overridepublic String v5() {return null;}@Overridepublic String v21() {return null;}
}

/******************************************************************************** Package: com.example.demo.design.adapter.interfaceadapter* Type:    V* Date:    2022-03-12 15:47** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.interfaceadapter;/*** 功能描述： 多种电压 接口** @author Songxianyang* @date 2022-03-12 15:47*/
public interface IVoltageAdapter {/*** 充手机* @return s*/public String v5();/*** 充电车* @return s*/String v21();/*......*/
}

/******************************************************************************** Package: com.example.demo.design.adapter.interfaceadapter* Type:    Phone* Date:    2022-03-12 15:56** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.interfaceadapter;/*** 功能描述：手机需要5v电压** @author Songxianyang* @date 2022-03-12 15:56*/
public class Phone {private AbsVoltageAdapter abs;public Phone(AbsVoltageAdapter abs) {this.abs = abs;}public void change() {System.out.println("小米手机已经充上"+abs.v5());}
}

/******************************************************************************** Package: com.example.demo.design.adapter.interfaceadapter* Type:    PhoneAdapter* Date:    2022-03-12 15:53** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.interfaceadapter;/*** 功能描述：手机适配器5v* 优化点* @author Songxianyang* @date 2022-03-12 15:53*/
public class PhoneAdapter extends AbsVoltageAdapter {@Overridepublic String v5() {return "5v";}
}

/******************************************************************************** Package: com.example.demo.design.adapter.classadapter* Type:    Test* Date:    2022-03-12 10:34** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.adapter.interfaceadapter;/*** 功能描述：** @author Songxianyang* @date 2022-03-12 10:34*/
public class Test {public static void main(String[] args) {Phone phone = new Phone(new PhoneAdapter());phone.change();}
}

源码分析 mvc

源码分析

DispatcherServlet dispatcherServlet = new DispatcherServlet();
DispatcherServlet：{方法：doDispatch(HttpServletRequest request){// 获取 requestHttpServletRequest processedRequest = request;// 执行器对象：HandlerHandlerExecutionChain mappedHandler = null;// 获取映射执行器对象mappedHandler = this.getHandler(processedRequest);// 获取具体的 HandlerAdapter 的适配器HandlerAdapter ha = this.getHandlerAdapter(mappedHandler.getHandler());// 不同的适配器 返回不同的 mvmv = ha.handle(processedRequest, response, mappedHandler.getHandler());//被调用的代码//遍历获取具体的handler 并返回protected HandlerAdapter getHandlerAdapter(Object handler) throws ServletException {if (this.handlerAdapters != null) {Iterator var2 = this.handlerAdapters.iterator();while(var2.hasNext()) {HandlerAdapter adapter = (HandlerAdapter)var2.next();if (adapter.supports(handler)) {return adapter;}}}throw new ServletException("No adapter for handler [" + handler + "]: The DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler");}}//接口 ：具体的实现 有6个适配器public interface HandlerAdapter {handler 标记boolean supports(Object handler);@NullableModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception;@Deprecatedlong getLastModified(HttpServletRequest request, Object handler);
}
}

适配器到此结束；

桥接模式-结构化

代码分享

类图

/******************************************************************************** Package: com.example.demo.bridg* Type:    Brand* Date:    2022-03-12 20:47** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：为手机品牌做的接口** @author Songxianyang* @date 2022-03-12 20:47*/
public interface Brand {/*** 打电话*/void call();/*** 上网*/void net();
}

/******************************************************************************** Package: com.example.demo.bridg* Type:    Flat* Date:    2022-03-12 20:55** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：平板 手机** @author Songxianyang* @date 2022-03-12 20:55*/
public class FlatPhone extends StylePhone {private String name = "平板:";public FlatPhone(Brand brand) {super(brand);}@Overridepublic void call() {System.out.println(name);super.call();}@Overrideprotected void net() {System.out.println(name);super.net();}
}

/******************************************************************************** Package: com.example.demo.bridg* Type:    FlipPhone* Date:    2022-03-12 20:55** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：翻盖 手机** @author Songxianyang* @date 2022-03-12 20:55*/
public class FlipPhone extends StylePhone {private String name = "翻盖:";public FlipPhone(Brand brand) {super(brand);}@Overridepublic void call() {System.out.println(name);super.call();}@Overrideprotected void net() {System.out.println(name);super.net();}
}

/******************************************************************************** Package: com.example.demo.bridg* Type:    XiaoMPhone* Date:    2022-03-12 20:49** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：小米手机** @author Songxianyang* @date 2022-03-12 20:49*/
public class HuaweiPhone implements Brand {@Overridepublic void call() {System.out.println("Huawei手机打电话");}@Overridepublic void net() {System.out.println("Huawei手机上网");}
}

/******************************************************************************** Package: com.example.demo.bridg* Type:    StylePhone* Date:    2022-03-12 20:53** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：手机样式** @author Songxianyang* @date 2022-03-12 20:53*/
public abstract class StylePhone {private Brand brand;public StylePhone(Brand brand) {this.brand = brand;}// 开始搭桥protected void call(){brand.call();}protected void net() {brand.net();}
}

/******************************************************************************** Package: com.example.demo.bridg* Type:    Test* Date:    2022-03-12 20:51** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：桥接模式   ： 抽象类与接口分开** @author Songxianyang* @date 2022-03-12 20:51*/
public class Test {public static void main(String[] args) {StylePhone flatPhone = new FlatPhone(new XiaoMiPhone());flatPhone.call();flatPhone.net();System.out.println("----------------------");StylePhone flipPhone = new FlipPhone(new XiaoMiPhone());flipPhone.call();flipPhone.net();System.out.println("-----------------");StylePhone huawei = new FlipPhone(new HuaweiPhone());huawei.call();huawei.net();}
}

/******************************************************************************** Package: com.example.demo.bridg* Type:    XiaoMPhone* Date:    2022-03-12 20:49** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.bridg;/*** 功能描述：小米手机** @author Songxianyang* @date 2022-03-12 20:49*/
public class XiaoMiPhone implements Brand{@Overridepublic void call() {System.out.println("Xiaomi手机打电话");}@Overridepublic void net() {System.out.println("Xiaomi手机上网");}
}

jdbc源码分析

没有分析明白

桥接总结

装饰者设计模式

需求

代码结构

详细代码展示

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    AmericanoCoffee* Date:    2022-03-13 15:08** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述：美式咖啡** @author Songxianyang* @date 2022-03-13 15:08*/
public class AmericanoCoffee extends Coffee{public AmericanoCoffee() {setName("美式咖啡");setPrice(2.0f);}
}

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    ChinaCoffee* Date:    2022-03-13 15:12** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述：中国咖啡** @author Songxianyang* @date 2022-03-13 15:12*/
public class ChinaCoffee extends Coffee{public ChinaCoffee() {setName("中国咖啡");setPrice(2.0f);}
}

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    Coffee* Date:    2022-03-13 15:07** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述：** @author Songxianyang* @date 2022-03-13 15:07*/
public class Coffee extends Drink {@Overridefloat count() {return getPrice();}
}

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    DecoratorSeasone* Date:    2022-03-13 15:14** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述： 装饰者 调料** @author Songxianyang* @date 2022-03-13 15:14*/
public class DecoratorSeason extends Drink{private Drink drink;public DecoratorSeason(Drink drink) {this.drink = drink;}@Overridefloat count() {// getPrice 当前调料的钱   drink.count() 上一次计算的钱return getPrice()+drink.count();}@Overridepublic void setName(String name) {super.setName(name+"&&"+drink.getName());}
}

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    Drink* Date:    2022-03-13 15:01** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述： 饮料类 抽象起来** @author Songxianyang* @date 2022-03-13 15:01*/public abstract class Drink {private String name;private float price;/*** 计算价格* @return*/abstract float count();public String getName() {return name;}public void setName(String name) {this.name = name;}public float getPrice() {return price;}public void setPrice(float price) {this.price = price;}
}

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    Milk* Date:    2022-03-13 15:21** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述：调料 牛奶** @author Songxianyang* @date 2022-03-13 15:21*/
public class Milk extends DecoratorSeason{public Milk(Drink drink) {super(drink);setName("调料 牛奶");setPrice(1.0f);}}

/******************************************************************************** Package: com.example.demo.design.decorator.master* Type:    SoyBean* Date:    2022-03-13 15:23** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述：豆浆** @author Songxianyang* @date 2022-03-13 15:23*/
public class SoyBean extends DecoratorSeason{public SoyBean(Drink drink) {super(drink);setName("豆浆");setPrice(2.0f);}
}

/******************************************************************************** Package: com.example.demo.design.decorator* Type:    Test* Date:    2022-02-20 13:36** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.decorator.master;/*** 功能描述：** @author Songxianyang* @date 2022-02-20 13:36*/
public class Test {public static void main(String[] args) {//普通一杯 中国咖啡Drink order = new ChinaCoffee();System.out.println(order.getPrice());// 中国咖啡+牛奶order= new Milk(order);System.out.println("咖啡总价"+ order.count());System.out.println(order.getName());// 中国咖啡+豆浆order=new SoyBean(order);System.out.println("咖啡总价"+ order.count());System.out.println(order.getName());// 中国咖啡+豆浆+豆浆order=new SoyBean(order);System.out.println("咖啡总价"+ order.count());System.out.println(order.getName());}
}

测试截图

注意的点：在装饰器类：DecoratorSeason 中两个的方法。有说明

装饰器挺绕的面试经常问

IO 分析

/******************************************************************************** Package: com.example.demo.jdk* Type:    Io* Date:    2022-03-15 22:25** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.jdk;import java.io.DataInputStream;
import java.io.FileInputStream;/*** 功能描述：** @author Songxianyang* @date 2022-03-15 22:25*/
public class Io {public static void main(String[] args) throws Exception {/*** FilterInputStream   装饰器*   protected volatile InputStream in; 饮料*DataInputStream 咖啡*/DataInputStream dataInputStream = new DataInputStream(new FileInputStream(""));System.out.println(dataInputStream.read());dataInputStream.close();}
}

外观模式

蛋糕外观模式 Code

类

/******************************************************************************** Package: com.example.demo.design.facade* Type:    AbsCake* Date:    2022-04-09 15:29** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述：** @author Songxianyang* @date 2022-04-09 15:29*/
public abstract class AbsCake {/*** 开启*/public abstract void start();/*** 关闭*/public abstract void end();}

/******************************************************************************** Package: com.example.demo.design.facade* Type:    Baking* Date:    2022-04-09 15:10** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述：烘烤** @author Songxianyang* @date 2022-04-09 15:10*/
public class Baking extends AbsCake{@Overridepublic void start() {System.out.println("开启烘烤机器准备蛋糕");}@Overridepublic void end() {System.out.println("关闭烘烤机");}
}

/******************************************************************************** Package: com.example.demo.design.facade* Type:    CakeShopFacade* Date:    2022-04-09 15:05** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述： 蛋糕外观类* 我得理解：将功能复杂的调用关系封装在一个方法中，调用端调用即可。比较好理解* 例子：蛋糕店： 水果机器、烘烤机、打蛋器、奶油机、、、、** @author Songxianyang* @date 2022-04-09 15:05*/public class CakeShopFacade {/*** 使用聚合的关系来使用对象 对 类的使用不够灵活 用着玩 学习外观模式* 面向接口编程 整着玩*/private Baking baking;private Cream cream;private Fruits fruits;private Whisk whisk;public CakeShopFacade(Baking baking, Cream cream, Fruits fruits, Whisk whisk) {this.baking = baking;this.cream = cream;this.fruits = fruits;this.whisk = whisk;}public void startIn() {baking.start();cream.start();fruits.start();whisk.start();}public void end() {baking.end();cream.end();fruits.end();whisk.end();}
}

/******************************************************************************** Package: com.example.demo.design.facade* Type:    Cream* Date:    2022-04-09 15:28** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述：奶油机器** @author Songxianyang* @date 2022-04-09 15:28*/
public class Cream extends AbsCake{@Overridepublic void start() {System.out.println("奶油机器开始打奶油");}@Overridepublic void end() {System.out.println("奶油机器关闭");}//、、、、
}

/******************************************************************************** Package: com.example.demo.design.facade* Type:    Fruits* Date:    2022-04-09 15:09** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述： 水果机器** @author Songxianyang* @date 2022-04-09 15:09*/
public class Fruits extends AbsCake{@Overridepublic void start() {System.out.println("各种水果已经做好");}@Overridepublic void end() {System.out.println("关闭水果机器");}}

/******************************************************************************** Package: com.example.demo.design.facade* Type:    Test* Date:    2022-04-09 15:44** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述：** @author Songxianyang* @date 2022-04-09 15:44*/
public class Test {public static void main(String[] args) {CakeShopFacade facade = new CakeShopFacade(new Baking(), new Cream(), new Fruits(), new Whisk());facade.startIn();}
}

/******************************************************************************** Package: com.example.demo.design.facade* Type:    Whisk* Date:    2022-04-09 15:10** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.facade;/*** 功能描述：打蛋器** @author Songxianyang* @date 2022-04-09 15:10*/
public class Whisk extends AbsCake{@Overridepublic void start() {System.out.println("打蛋器开始打蛋");}@Overridepublic void end() {System.out.println("关闭打蛋器");}
}

测试结果

mybaitis 底层外感模式源码分析

/******************************************************************************** Package: com.example.demo.jdk* Type:    MybatisFacade* Date:    2022-04-09 15:45** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.jdk;import org.apache.ibatis.session.Configuration;/*** 功能描述：外观模式下的mybatis** @author Songxianyang* @date 2022-04-09 15:45*/
public class MybatisFacade {public static void main(String[] args) {new Configuration();}
}
分析如下
public MetaObject newMetaObject(Object object) {return MetaObject.forObject(object, this.objectFactory, this.objectWrapperFactory, this.reflectorFactory);}
其中调用的方法：
public static MetaObject forObject(Object object, ObjectFactory objectFactory, ObjectWrapperFactory objectWrapperFactory, ReflectorFactory reflectorFactory) {return object == null ? SystemMetaObject.NULL_META_OBJECT : new MetaObject(object, objectFactory, objectWrapperFactory, reflectorFactory);}
在掉构造器private MetaObject(Object object, ObjectFactory objectFactory, ObjectWrapperFactory objectWrapperFactory, ReflectorFactory reflectorFactory) {this.originalObject = object;this.objectFactory = objectFactory;this.objectWrapperFactory = objectWrapperFactory;this.reflectorFactory = reflectorFactory;if (object instanceof ObjectWrapper) {this.objectWrapper = (ObjectWrapper)object;} else if (objectWrapperFactory.hasWrapperFor(object)) {this.objectWrapper = objectWrapperFactory.getWrapperFor(this, object);} else if (object instanceof Map) {this.objectWrapper = new MapWrapper(this, (Map)object);} else if (object instanceof Collection) {this.objectWrapper = new CollectionWrapper(this, (Collection)object);} else {this.objectWrapper = new BeanWrapper(this, object);}}

享元模式

结构

/******************************************************************************** Package: com.example.demo.design.enjoy* Type:    Test* Date:    2022-04-09 21:20** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.enjoy;/*** 功能描述：** @author Songxianyang* @date 2022-04-09 21:20*/
public class Test {public static void main(String[] args) {WebsiteFactory factory = new WebsiteFactory();Website websiteWX = factory.getWebsite("微信公众号");websiteWX.use(new User("SteveCode"));Website websiteWX1 = factory.getWebsite("微信公众号");websiteWX1.use(new User("SteveCode"));Website websiteCSDN = factory.getWebsite("CSDN");websiteCSDN.use(new User("SteveCode."));System.out.println(factory.size());}
}

/******************************************************************************** Package: com.example.demo.design.enjoy* Type:    User* Date:    2022-04-09 21:07** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.enjoy;import lombok.Data;/*** 功能描述： 外部状态 ：用户类* 一直发生变化的对象 ：外部状态** @author Songxianyang* @date 2022-04-09 21:07*/
@Data
public class User {private String name;public User(String name) {this.name = name;}
}

/******************************************************************************** Package: com.example.demo.design.enjoy* Type:    Website* Date:    2022-04-09 21:08** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.enjoy;/*** 功能描述：网站 具体实现** @author Songxianyang* @date 2022-04-09 21:08*/
public class Website extends WebsiteAbstract {private String type;public Website(String type) {this.type = type;}@Overridepublic void use(User user) {System.out.println("当前网站正在使用中。。。。"+"该类型是："+type+"，用户:"+user.getName()+"-体验良好");}
}

/******************************************************************************** Package: com.example.demo.design.enjoy* Type:    WebsiteAbstract* Date:    2022-04-09 21:06** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.enjoy;/*** 功能描述： 享元模式 ：共享 对象*  网站案例*  抽象类* @author Songxianyang* @date 2022-04-09 21:06*/
public abstract class WebsiteAbstract {/*** 网站的使用*/public abstract void use(User user);}

/******************************************************************************** Package: com.example.demo.design.enjoy* Type:    WebsiteFactory* Date:    2022-04-09 21:13** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.enjoy;import java.util.HashMap;
import java.util.Map;
import java.util.Objects;/*** 功能描述： 网站工厂** @author Songxianyang* @date 2022-04-09 21:13*/
public class WebsiteFactory {private Map<String, Website> map = new HashMap<>();public Website getWebsite(String type) {//如果没有该类型就创建if (Objects.isNull(map.get(type))) {map.put(type,new Website(type));return map.get(type);}// 有就直接使用return map.get(type);}public int size() {return map.size();}
}

执行结果：

Integer 源码分析享元模式

/******************************************************************************** Package: com.example.demo.jdk* Type:    Enjoy* Date:    2022-04-09 21:58** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.jdk;/*** 功能描述：** @author Songxianyang* @date 2022-04-09 21:58*/
public class Enjoy {public static void main(String[] args) {Integer integer1 = Integer.valueOf(19);Integer integer12 = Integer.valueOf(19);Integer integer2 = Integer.valueOf(200);Integer integer22 = Integer.valueOf(200);System.out.println(integer1 == integer12);System.out.println(integer2 == integer22); }
// 分析 先从cache中找对应的 池中的数据。数据范围-128到127
// 否则就创建新的对象
public static Integer valueOf(int i) {if (i >= IntegerCache.low && i <= IntegerCache.high)return IntegerCache.cache[i + (-IntegerCache.low)];return new Integer(i);}
}

代理模式：

静态代理

优缺点

代码结构

Code实现

/******************************************************************************** Package: com.example.demo.design.proxy.staticproxy* Type:    ILog* Date:    2022-04-10 13:40** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.staticproxy;/*** 功能描述： 日志接口* 静态代理：* 优点：对目标方法 功能增强* 缺点：不易于维护* @author Songxianyang* @date 2022-04-10 13:40*/
public interface ILog {/*** 打印日志*/void pint();
}

/******************************************************************************** Package: com.example.demo.design.proxy.staticproxy* Type:    ILogImpl* Date:    2022-04-10 13:40** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.staticproxy;/*** 功能描述：** @author Songxianyang* @date 2022-04-10 13:40*/
public class LogImpl implements ILog {@Overridepublic void pint() {System.out.println("打印日志");}
}

/******************************************************************************** Package: com.example.demo.design.proxy.staticproxy* Type:    LogProxy* Date:    2022-04-10 13:42** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.staticproxy;/*** 功能描述：* 实现对方法的增强* @author Songxianyang* @date 2022-04-10 13:42*/
public class LogProxy implements ILog {private ILog iLog;public LogProxy(ILog iLog) {this.iLog = iLog;}@Overridepublic void pint() {//这边写的可以是业务方法：比喻：事务的开启System.out.println("开启事务-----");//执行目标方法:可以做判断 是否有异常  有  回滚 无  提交iLog.pint();//假设 无System.out.println("提交事务-----");}
}

/******************************************************************************** Package: com.example.demo.design.proxy.staticproxy* Type:    Test* Date:    2022-04-10 13:47** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.staticproxy;/*** 功能描述：** @author Songxianyang* @date 2022-04-10 13:47*/
public class Test {public static void main(String[] args) {// 目标类ILog log = new LogImpl();// 代理类LogProxy proxy = new LogProxy(log);// 调用代理中的方法proxy.pint();}
}

运行截图

动态代理

结构

/******************************************************************************** Package: com.example.demo.design.proxy.staticproxy* Type:    ILog* Date:    2022-04-10 13:40** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.dynamic;/*** 功能描述： 日志接口* 动态代理：jdk 代理   接口代理* 优点：对目标方法 功能增强* 缺点：易于维护* @author Songxianyang* @date 2022-04-10 13:40*/
public interface ILog {/*** 打印日志*/void pint();/*** 打印一个数*/void num( int i);int count(int j);
}

/******************************************************************************** Package: com.example.demo.design.proxy.staticproxy* Type:    ILogImpl* Date:    2022-04-10 13:40** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.dynamic;/*** 功能描述：** @author Songxianyang* @date 2022-04-10 13:40*/
public class LogImpl implements ILog {@Overridepublic void pint() {System.out.println("打印日志");}@Overridepublic void num(int i) {System.out.println(i);}@Overridepublic int count(int j) {return j;}
}

/******************************************************************************** Package: com.example.demo.design.proxy.dynamic* Type:    LogProxyFactory* Date:    2022-04-10 14:13** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.dynamic;import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;/*** 功能描述：* 代理工厂* @author Songxianyang* @date 2022-04-10 14:13*/
public class LogProxyFactory {/*** 目标对象*/private Object target;public LogProxyFactory(Object target) {this.target = target;}/*** 获取目标对象实例* @return*/public Object getTargetExample() {return Proxy.newProxyInstance(target.getClass().getClassLoader(), target.getClass().getInterfaces(),new InvocationHandler() {@Overridepublic Object invoke(Object proxy, Method method, Object[] args) throws Throwable {System.out.println("jdk 代理开始");// 两个参数进行说明 1、目标类 2、参数数组Object invoke = method.invoke(target, args);System.out.println("jdk 代理结束");return invoke;}});}
}

/******************************************************************************** Package: com.example.demo.design.proxy.dynamic* Type:    Test* Date:    2022-04-10 14:21** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.dynamic;/*** 功能描述：** @author Songxianyang* @date 2022-04-10 14:21*/
public class Test {public static void main(String[] args) {ILog log = new LogImpl();LogProxyFactory factory = new LogProxyFactory(log);// 强制类型转换 要转成 接口的类型  特别奇怪ILog logn = (ILog) factory.getTargetExample();//logn.pint();//logn.num(99);System.out.println(logn.count(9));}
}

运行测试

cglib 动态代理

结构

/******************************************************************************** Package: com.example.demo.design.proxy.cjlib* Type:    Log* Date:    2022-04-10 16:56** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.cjlib;/*** 功能描述：cglib 代理* 对象代理  并不需要来代理接口*** @author Songxianyang* @date 2022-04-10 16:56*/
public class Log {public void pint() {System.out.println("SteveCode 在学习 cglib 动态代理 哈哈");}
}

/******************************************************************************** Package: com.example.demo.design.proxy.cjlib* Type:    ProxyFactory* Date:    2022-04-10 16:57** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.cjlib;import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;import java.lang.reflect.Method;/*** 功能描述：** @author Songxianyang* @date 2022-04-10 16:57*/
public class ProxyFactory implements MethodInterceptor {/*** 目标对象*/private Object target;public ProxyFactory(Object target) {this.target = target;}/*** 获取代理对象 比较重要*/public Object getTargetExample() {// 创建工具类Enhancer enhancer = new Enhancer();// 设置父类enhancer.setSuperclass(target.getClass());// 设置回调函数enhancer.setCallback(this);// 创建代理对象return enhancer.create();}/*** 方法增强* @param o* @param method 代理对象中的执行方法* @param args 参数* @param methodProxy 代理的方法* @return* @throws Throwable*/@Overridepublic Object intercept(Object o, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {System.out.println("cglib 代理方法的增强~~~~");Object invoke = method.invoke(target, args);System.out.println("cglib 代理方法的提交~~~~");return invoke;}
}

/******************************************************************************** Package: com.example.demo.design.proxy.cjlib* Type:    Test* Date:    2022-04-10 17:10** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.proxy.cjlib;/*** 功能描述：** @author Songxianyang* @date 2022-04-10 17:10*/
public class Test {public static void main(String[] args) {// 目标对象Log log = new Log();//获取代理工厂ProxyFactory factory = new ProxyFactory(log);// 或缺代理对象Log log2 = (Log) factory.getTargetExample();// 执行被代理的方法log2.pint();}
}

运行结果

模板方法模式

结构

代码

/******************************************************************************** Package: com.example.demo.design.template* Type:    AbsBeanMlik* Date:    2022-04-10 17:43** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.template;/*** 功能描述： 制作不同口味豆浆* 口味：发生改变 （抽象）* 制作过程 都是相同的 （模板）** 模板方法：行为型模式*** @author Songxianyang* @date 2022-04-10 17:43*/
public abstract class AbsBeanMilk {/*** 口味 调味料*/public abstract void dressing();/*** 制作模板*/public void template() {//选材putBean();// 什么口味dressing();// 豆浆机开始打磨beanMachine();}/*** 什么类型 的 大豆*/public abstract void putBean();/****/public void beanMachine() {System.out.println("中国制造：SteveCode牌 豆浆机 开始打磨");}}

/******************************************************************************** Package: com.example.demo.design.template* Type:    Strawberry* Date:    2022-04-10 17:52** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.template;/*** 功能描述： 草莓味** @author Songxianyang* @date 2022-04-10 17:52*/
public class Strawberry extends AbsBeanMilk{@Overridepublic void dressing() {System.out.println("草莓味");}@Overridepublic void putBean() {System.out.println("普通大豆");}
}

/******************************************************************************** Package: com.example.demo.design.template* Type:    A* Date:    2022-04-10 17:42** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.template;/*** 功能描述：模板方法模式** @author Songxianyang* @date 2022-04-10 17:42*/
public class Test {public static void main(String[] args) {AbsBeanMilk strawberry = new Strawberry();strawberry.template();System.out.println("-------");AbsBeanMilk watermelon = new Watermelon();watermelon.template();}
}

/******************************************************************************** Package: com.example.demo.design.template* Type:    Watermelon* Date:    2022-04-10 17:54** Copyright (c) 2022 HUANENG GUICHENG TRUST CORP.,LTD All Rights Reserved.** You may not use this file except in compliance with the License.*******************************************************************************/
package com.example.demo.design.template;/*** 功能描述： 西瓜味** @author Songxianyang* @date 2022-04-10 17:54*/
public class Watermelon  extends AbsBeanMilk{@Overridepublic void dressing() {System.out.println("西瓜味");}@Overridepublic void putBean() {System.out.println("优质大豆");}
}

运行结果

Java设计模式学习以及底层源码分析相关推荐

idea 线程内存_Java线程池系列之-Java线程池底层源码分析系列（一）
课程简介: 课程目标:通过本课程学习,深入理解Java线程池,提升自身技术能力与价值. 适用人群:具有Java多线程基础的人群,希望深入理解线程池底层原理的人群. 课程概述:多线程的异步执行方式,虽然 ...
idea 线程内存_Java线程池系列之-Java线程池底层源码分析系列（二）
课程简介: 课程目标:通过本课程学习,深入理解Java线程池,提升自身技术能力与价值. 适用人群:具有Java多线程基础的人群,希望深入理解线程池底层原理的人群. 课程概述:多线程的异步执行方式,虽然 ...
视频教程-Spring底层源码分析-Java
Spring底层源码分析鲁班学院-子路老师曾就职于谷歌.天猫电商等多家互联网公司,历任java架构师.研发经理等职位,参与并主导千万级并发电商网站与后端供应链研发体系搭建,多次参与电商大促活动技术保 ...
计算机毕业设计Java移动学习网站(系统+源码+mysql数据库+Lw文档）
计算机毕业设计Java移动学习网站(系统+源码+mysql数据库+Lw文档) 计算机毕业设计Java移动学习网站(系统+源码+mysql数据库+Lw文档) 本源码技术栈: 项目架构:B/S架构开发语 ...
sheng的学习笔记-Vector源码分析
概述 Vector底层也是数组,跟ArrayList很像(先看下ArrayList,再看Vector会很轻松),ArrayList可参考下文,并且由于效率低,已经被淘汰了,大概瞅瞅得了 sheng的学 ...
Thinkphp底层源码分析
Thinkphp底层源码分析第一章首先我们学习此章节的内容大家可能需要有一些基础才行,接着对PHP内置字符窜数组相关函数会用的比较多一点,当然不太熟悉的朋友,其实可以借助手册看下去.下面我们开始正题 ...
Jaca集合（四）Vector集合底层源码分析
Vector的基本介绍: (1)Vector类的定义说明:我们进入源码界面进行查看: public class Vector<E>extends AbstractList<E> ...
ArrayList底层源码分析
声明:本文为作者原创,请勿装载,如过转载,请注明转载地址文章目录 ArrayList底层源码分析 1. 继承Serializable接口 2. 继承Cloneable接口 2.1 浅拷贝 2.2 深 ...
【mybatis源码】 mybatis底层源码分析
[mybatis源码] mybatis底层源码分析 1.测试用例 2.开撸源码 2.1 SqlSessionFactory对象的创建与获取 2.2 获取SqlSession对象 2.3 获取接口的代理 ...

Java设计模式学习以及底层源码分析

工厂模式

简单工厂模式

工厂方法模式

抽象工厂模式

原型模式

自己的Code

建造者模式

源码盘点

项目截图

测试截图

源码分析

适配器模式-结构化

类适配器

上代码

对象适配器

接口适配器

结构：

代码以及优化

源码分析 mvc

源码 分析

桥接模式-结构化

代码分享

类图

jdbc源码分析

桥接总结

装饰者设计模式

需求

代码结构

详细代码 展示

测试截图

装饰器 挺绕的 面试经常问

IO 分析

外观模式

蛋糕外观模式 Code

类

测试结果

mybaitis 底层 外感模式 源码分析

享元 模式

结构

执行结果：

Integer 源码分析享元模式

代理模式：

静态代理

优缺点

代码结构

Code实现

运行截图

动态代理

结构

运行测试

cglib 动态代理

结构

运行结果

模板方法模式

结构

代码

运行结果

Java设计模式学习以及底层源码分析相关推荐

最新文章

热门文章

源码分析

详细代码展示

装饰器挺绕的面试经常问

mybaitis 底层外感模式源码分析

享元模式