内容概要

一、spring入门
二、spring boot配置
三、spring boot与日志
四、spring boot与web开发
五、spring boot与Docker
六、spring boot与数据访问
七、spring boot启动配置原理
八、spring boot自定义starters

九、spring boot与缓存
十、spring boot与消息
十一、spring boot与检索
十二、spring boot与任务
十三、spring boot与安全
十四、spring boot与分布式
十五、spring boot与并发部署
十六、spring boot与监控管理

一、简介

spring boot用来简化spring应用开发，约定大于配置，去繁从简，just run就能创建一个独立的，产品级的应用

优点：
-快速创建独立运行的spring项目以及主流框架集成
-快速嵌入式的Servlet容器，应用无需打成Jar包
-starters自动以来与版本控制
-大量的自动配置，简化开发，也可修改默认值
-无需配置xml，无代码生成，开箱即用
-准生产环境运行时应用监控
-与云计算天然集成

二、spring cloud简介
What are Microservices?
In short,the microservices arthitectural style is an approach to developing a single application as a suite of small servies,each running in its own process and communicating with lightweight mechanisms,often an HTTP resource API.These services are built around business capailities and independently deployable by fully automated deployment machinery.There is a bare minimum of centralized management of these services,which may be written in different programming language and use different data storage technologies.

微服务是一种架构风格，一个应用应该是一组小型服务，可以通过HTTP的方式进行互通。

单体应用
Simple to
develop、test、deploy、scale

环境约束
-jdk1.8
-maven3.x
-intellij idea2017
-spring boot1.5.9RELEASE

统一环境
Maven设置

<profile><id>jdk-1.8</id><activation><activeByDefault>true</activeByDefault><jdk>1.8</jdk></activation><properties><maven.complier.source>1.8</maven.complier.source><maven.complier.target>1.8</maven.complier.target><maven.complier.complierVersion>1.8</maven.complier.complierVersion></properties>
</profile>

二、spring boot HelloWorld

实现功能：浏览器发送hello请求，响应Hello World
1、创建与i个maven工程
2、导入springboot依赖
3、编写主程序

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.xing</groupId><artifactId>spring-boot-01-helloworld</artifactId><version>1.0-SNAPSHOT</version><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.9.RELEASE</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies><!--打包插件--><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
</project>

package com.xing;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
//标注一个主程序类
@SpringBootApplication
public class HelloWorldMainApplication {public static void main(String[] args) {//spring 启动SpringApplication.run(HelloWorldMainApplication.class,args);}
}

package com.xing.controller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;@Controller
public class HelloController {@ResponseBody@RequestMapping("/hello")public String hello(){return "Hello,World!";}
}

“C:\Program Files\Java\jdk1.8.0_221\bin\java.exe” -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=53456 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=localhost -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true “-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2018.3.1\lib\idea_rt.jar=53457:C:\Program Files\JetBrains\IntelliJ IDEA 2018.3.1\bin” -Dfile.encoding=UTF-8 -classpath “C:\Program Files\Java\jdk1.8.0_221\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_221\jre\lib\rt.jar;C:\Users\Administrator\IdeaProjects\springboot01helloworld\target\classes;F:\Java\repository\org\springframework\boot\spring-boot-starter-web\1.5.9.RELEASE\spring-boot-starter-web-1.5.9.RELEASE.jar;F:\Java\repository\org\springframework\boot\spring-boot-starter\1.5.9.RELEASE\spring-boot-starter-1.5.9.RELEASE.jar;F:\Java\repository\org\springframework\boot\spring-boot\1.5.9.RELEASE\spring-boot-1.5.9.RELEASE.jar;F:\Java\repository\org\springframework\boot\spring-boot-autoconfigure\1.5.9.RELEASE\spring-boot-autoconfigure-1.5.9.RELEASE.jar;F:\Java\repository\org\springframework\boot\spring-boot-starter-logging\1.5.9.RELEASE\spring-boot-starter-logging-1.5.9.RELEASE.jar;F:\Java\repository\ch\qos\logback\logback-classic\1.1.11\logback-classic-1.1.11.jar;F:\Java\repository\ch\qos\logback\logback-core\1.1.11\logback-core-1.1.11.jar;F:\Java\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;F:\Java\repository\org\slf4j\jcl-over-slf4j\1.7.25\jcl-over-slf4j-1.7.25.jar;F:\Java\repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;F:\Java\repository\org\slf4j\log4j-over-slf4j\1.7.25\log4j-over-slf4j-1.7.25.jar;F:\Java\repository\org\springframework\spring-core\4.3.13.RELEASE\spring-core-4.3.13.RELEASE.jar;F:\Java\repository\org\yaml\snakeyaml\1.17\snakeyaml-1.17.jar;F:\Java\repository\org\springframework\boot\spring-boot-starter-tomcat\1.5.9.RELEASE\spring-boot-starter-tomcat-1.5.9.RELEASE.jar;F:\Java\repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.23\tomcat-embed-core-8.5.23.jar;F:\Java\repository\org\apache\tomcat\tomcat-annotations-api\8.5.23\tomcat-annotations-api-8.5.23.jar;F:\Java\repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.23\tomcat-embed-el-8.5.23.jar;F:\Java\repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.23\tomcat-embed-websocket-8.5.23.jar;F:\Java\repository\org\hibernate\hibernate-validator\5.3.6.Final\hibernate-validator-5.3.6.Final.jar;F:\Java\repository\javax\validation\validation-api\1.1.0.Final\validation-api-1.1.0.Final.jar;F:\Java\repository\org\jboss\logging\jboss-logging\3.3.1.Final\jboss-logging-3.3.1.Final.jar;F:\Java\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;F:\Java\repository\com\fasterxml\jackson\core\jackson-databind\2.8.10\jackson-databind-2.8.10.jar;F:\Java\repository\com\fasterxml\jackson\core\jackson-annotations\2.8.0\jackson-annotations-2.8.0.jar;F:\Java\repository\com\fasterxml\jackson\core\jackson-core\2.8.10\jackson-core-2.8.10.jar;F:\Java\repository\org\springframework\spring-web\4.3.13.RELEASE\spring-web-4.3.13.RELEASE.jar;F:\Java\repository\org\springframework\spring-aop\4.3.13.RELEASE\spring-aop-4.3.13.RELEASE.jar;F:\Java\repository\org\springframework\spring-beans\4.3.13.RELEASE\spring-beans-4.3.13.RELEASE.jar;F:\Java\repository\org\springframework\spring-context\4.3.13.RELEASE\spring-context-4.3.13.RELEASE.jar;F:\Java\repository\org\springframework\spring-webmvc\4.3.13.RELEASE\spring-webmvc-4.3.13.RELEASE.jar;F:\Java\repository\org\springframework\spring-expression\4.3.13.RELEASE\spring-expression-4.3.13.RELEASE.jar” com.xing.HelloWorldMainApplication

. ____ _ __ _ _
/\ / ’ __ _ () __ __ _ \ \ \
( ( )__ | '_ | '| | ’ / ` | \ \ \
\/ )| |)| | | | | || (| | ) ) ) )
’ || .__|| ||| |__, | / / / /
=|_|======|/=////
:: Spring Boot :: (v1.5.9.RELEASE)

2020-04-26 20:16:45.567 INFO 8516 — [ main] com.xing.HelloWorldMainApplication : Starting HelloWorldMainApplication on M9B5WKO2WLZ623J with PID 8516 (C:\Users\Administrator\IdeaProjects\springboot01helloworld\target\classes started by Administrator in C:\Users\Administrator\IdeaProjects\springboot01helloworld)
2020-04-26 20:16:45.567 INFO 8516 — [ main] com.xing.HelloWorldMainApplication : No active profile set, falling back to default profiles: default
2020-04-26 20:16:45.607 INFO 8516 — [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@b59d31: startup date [Sun Apr 26 20:16:45 CST 2020]; root of context hierarchy
2020-04-26 20:16:46.567 INFO 8516 — [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2020-04-26 20:16:46.577 INFO 8516 — [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-04-26 20:16:46.577 INFO 8516 — [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.23
2020-04-26 20:16:46.627 INFO 8516 — [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-04-26 20:16:46.627 INFO 8516 — [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1020 ms
2020-04-26 20:16:46.707 INFO 8516 — [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: ‘dispatcherServlet’ to [/]
2020-04-26 20:16:46.707 INFO 8516 — [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘characterEncodingFilter’ to: [/]
2020-04-26 20:16:46.707 INFO 8516 — [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘hiddenHttpMethodFilter’ to: [/]
2020-04-26 20:16:46.707 INFO 8516 — [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘httpPutFormContentFilter’ to: [/]
2020-04-26 20:16:46.707 INFO 8516 — [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘requestContextFilter’ to: [/]
2020-04-26 20:16:46.927 INFO 8516 — [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@b59d31: startup date [Sun Apr 26 20:16:45 CST 2020]; root of context hierarchy
2020-04-26 20:16:46.967 INFO 8516 — [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped “{[/hello]}” onto public java.lang.String com.xing.controller.HelloController.hello()
2020-04-26 20:16:46.977 INFO 8516 — [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped “{[/error]}” onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2020-04-26 20:16:46.977 INFO 8516 — [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped “{[/error],produces=[text/html]}” onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2020-04-26 20:16:46.987 INFO 8516 — [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2020-04-26 20:16:46.987 INFO 8516 — [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2020-04-26 20:16:47.007 INFO 8516 — [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2020-04-26 20:16:47.077 INFO 8516 — [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2020-04-26 20:16:47.107 INFO 8516 — [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2020-04-26 20:16:47.107 INFO 8516 — [ main] com.xing.HelloWorldMainApplication : Started HelloWorldMainApplication in 1.73 seconds (JVM running for 2.658)
2020-04-26 20:17:25.538 INFO 8516 — [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet ‘dispatcherServlet’
2020-04-26 20:17:25.538 INFO 8516 — [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet ‘dispatcherServlet’: initialization started
2020-04-26 20:17:25.548 INFO 8516 — [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet ‘dispatcherServlet’: initialization completed in 10 ms

05、场景启动器
spring-boot-starter-web,帮我们导入了web模块正常运行所依赖的组件

06、自动配置
@SpringbootApplication
@Configuration
@Component
@EnableAutoConfiguration
@AutoConfigurationPacakge
@Import

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//package org.springframework.boot.autoconfigure;import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.context.TypeExcludeFilter;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.FilterType;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.core.annotation.AliasFor;@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@SpringBootConfiguration
@EnableAutoConfiguration
@ComponentScan(excludeFilters = {@Filter(type = FilterType.CUSTOM,classes = {TypeExcludeFilter.class}
), @Filter(type = FilterType.CUSTOM,classes = {AutoConfigurationExcludeFilter.class}
)}
)
public @interface SpringBootApplication {@AliasFor(annotation = EnableAutoConfiguration.class,attribute = "exclude")Class<?>[] exclude() default {};@AliasFor(annotation = EnableAutoConfiguration.class,attribute = "excludeName")String[] excludeName() default {};@AliasFor(annotation = ComponentScan.class,attribute = "basePackages")String[] scanBasePackages() default {};@AliasFor(annotation = ComponentScan.class,attribute = "basePackageClasses")Class<?>[] scanBasePackageClasses() default {};
}

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//package org.springframework.boot.autoconfigure;import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.context.annotation.Import;@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@AutoConfigurationPackage
@Import({EnableAutoConfigurationImportSelector.class})
public @interface EnableAutoConfiguration {String ENABLED_OVERRIDE_PROPERTY = "spring.boot.enableautoconfiguration";Class<?>[] exclude() default {};String[] excludeName() default {};
}

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//package org.springframework.boot.autoconfigure;import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.boot.autoconfigure.AutoConfigurationPackages.Registrar;
import org.springframework.context.annotation.Import;@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@Import({Registrar.class})
public @interface AutoConfigurationPackage {
}

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//package org.springframework.context.annotation;import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Import {Class<?>[] value();
}

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