一、添加代码生成器

用来自动为数据库映射类建立：mapper、service、controller

package com.hanmh.utils;

import com.baomidou.mybatisplus.core.toolkit.StringPool;

import com.baomidou.mybatisplus.generator.AutoGenerator;

import com.baomidou.mybatisplus.generator.InjectionConfig;

import com.baomidou.mybatisplus.generator.config.*;

import com.baomidou.mybatisplus.generator.config.po.TableInfo;

import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;

import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import com.hanmh.pojo.BasePojo;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

public class HanGenerator {

public static void main(String[] args) {

// 代码生成器

AutoGenerator mpg = new AutoGenerator();

// 全局配置

GlobalConfig gc = new GlobalConfig();

//这样获取到的是父项目的目录

String projectPath = System.getProperty("user.dir");

String pojoProject = "pojo" + "/src/main/java/com/hanmh/pojo";

String otherProject = "admin";

//gc.setOutputDir(projectPath + "/src/main/java");

gc.setAuthor("hanmh");

gc.setOpen(false);

// gc.setSwagger2(true); 实体属性 Swagger2 注解

mpg.setGlobalConfig(gc);

// 数据源配置

DataSourceConfig dsc = new DataSourceConfig();

dsc.setUrl("jdbc:mysql://39.105.231.52:3306/db?useUnicode=true&useSSL=false&characterEncoding=utf8");

// dsc.setSchemaName("public");

dsc.setDriverName("com.mysql.jdbc.Driver");

dsc.setUsername("root");

dsc.setPassword("123456");

mpg.setDataSource(dsc);

// 包配置

PackageConfig pc = new PackageConfig();

pc.setParent("com.hanmh"); //设置父包

//自定义生成路径

Map pathInfo = new HashMap();

pathInfo.put("entity_path", projectPath + "/" + pojoProject); //pojo位置

pathInfo.put("controller_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/controller");

pathInfo.put("service_impl_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/service/impl");

pathInfo.put("service_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/service");

pathInfo.put("mapper_path", projectPath + "/" + otherProject + "/src/main/java/com/hanmh/mapper");

pathInfo.put("xml_path", projectPath + "/" + otherProject + "/src/main/resources/com/hanmh/mapper");

pc.setEntity("pojo"); //实体类

pc.setPathInfo(pathInfo);

mpg.setPackageInfo(pc);

// 自定义配置

InjectionConfig cfg = new InjectionConfig() {

@Override

public void initMap() {

// to do nothing

}

};

// 如果模板引擎是 freemarker

String templatePath = "/templates/mapper.xml.ftl";

// 策略配置

StrategyConfig strategy = new StrategyConfig();

strategy.setNaming(NamingStrategy.underline_to_camel);

strategy.setColumnNaming(NamingStrategy.underline_to_camel);

//生成时，继承的父类

strategy.setSuperEntityClass(BasePojo.class);

strategy.setEntityLombokModel(true);

strategy.setRestControllerStyle(true);

// 公共父类

strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");

// 写于父类中的公共字段

strategy.setSuperEntityColumns("id");

strategy.setInclude("ums_admin");

strategy.setControllerMappingHyphenStyle(true);

strategy.setTablePrefix(pc.getModuleName() + "_");

mpg.setStrategy(strategy);

mpg.setTemplateEngine(new FreemarkerTemplateEngine());

mpg.execute();

}

}

二、导入需要的jar包

前期需要导入的包有：mybatis-plus、mysql、duracloud(工具包)、pojo、spring-boot-starter-web

com.hanmh

pojo

org.projectlombok

lombok

com.baomidou

mybatis-plus-boot-starter

org.springframework.boot

spring-boot-starter-web

mysql

mysql-connector-java

org.duracloud

common

三、创建启动类

启动类必须创建在父包下面，注意在SpringBoot中，并不是不扫包，而是框架帮助完成了这件事，它会扫描启动类所在包下的所有类及其子包中的类

package com.hanmh;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

@MapperScan("com.hanmh.mapper")

public class AdminRun {

public static void main(String[] args) {

SpringApplication.run(AdminRun.class);

}

}

四、创建配置文件(application.yml)

server:

port: 8080

spring:

application:

name: admin

datasource:

driver-class-name: com.mysql.jdbc.Driver

url: jdbc:mysql://39.105.231.52:3306/db?useUnicode=true&useSSL=false&characterEncoding=utf8

username: root

password: 123456

hikari:

maximum-pool-size: 20

minimum-idle: 10

servlet:

#文件传输配置

multipart:

max-file-size: 5MB

max-request-size: 10MB

#运行的过程中输出sql语句(日志信息)

logging:

level:

com.hanmh.mapper: debug

五、返回值统一定义

1、ResultJson

package com.hanmh.pojo;

import lombok.Data;

@Data

public class ResultJson {

private Integer code; //200成功，500错误

private Object obj;

private String message;

public ResultJson(ResultCode resultCode, Object obj) {

this.code = resultCode.getCode();

this.message = resultCode.getMessage();

this.obj = obj;

}

public ResultJson(ResultCode resultCode, Object obj, String message) {

this.code = resultCode.getCode();

this.message = message;

this.obj = obj;

}

public static ResultJson success(Object obj) {

return new ResultJson(ResultCode.SUCCESS, obj);

}

public static ResultJson success(Object obj, String message) {

return new ResultJson(ResultCode.SUCCESS, obj, message);

}

public static ResultJson error(Object obj) {

return new ResultJson(ResultCode.ERROR, obj);

}

public static ResultJson error() {

return new ResultJson(ResultCode.ERROR, null);

}

public static ResultJson error(String message) {

return new ResultJson(ResultCode.ERROR, null, message);

}

}

2、ResultCode

定义4种返回代号和返回信息，使用枚举类进行实现

package com.hanmh.pojo;

import lombok.Data;

import lombok.Getter;

@Getter

public enum ResultCode {

SUCCESS(200, "请求成功"),

ERROR(500, "请求失败"),

NOAUTH(401, "用户未登录或者登录超时"), //操作时

NOPREMISSION(403, "没有此权限");

private Integer code;

private String message;

//枚举类型的构造默认为私有

private ResultCode(Integer code, String message) {

this.code = code;

this.message = message;

}

}

六、创建基础pojo

在所有的数据库表种，共有的字段是ID，现在将id独立出来

1、导入 mybatis-plus-annotation包

为了使用该包内部的IdType等类内部提供的注解，以告诉BasePojo中某些字段在数据库表中的存在与否

com.baomidou

mybatis-plus-annotation

3.0-RELEASE

2、BasePojo类

package com.hanmh.pojo;

import com.baomidou.mybatisplus.annotation.IdType;

import com.baomidou.mybatisplus.annotation.TableField;

import com.baomidou.mybatisplus.annotation.TableId;

import lombok.Data;

import org.omg.CORBA.IDLType;

@Data

public class BasePojo {

@TableId(type = IdType.AUTO)

private Integer id;

//做分页操作需要的字段

@TableField(exist = false)

private Integer pageNO;

@TableField(exist = false)

private Integer pageSize;

}

七、后端添加数据

1、密码加密

(1)需要使用安全包提供加密服务(security)

org.springframework.security

spring-security-core

2、将加密类(BCryptPasswordEncoder)放入IOC容器

在SpringBoot环节，需要将某个类加入IOC容器，就需要在配置类中，配置@Bean节点

@Configuration

public class AdminConfig {

@Bean

//将BCryptPasswordEncoder放进IOC容器

BCryptPasswordEncoder getPasswordEncoder() {

return new BCryptPasswordEncoder();

}

}

注：使用此方法对数据进行加密的原因：此加密方法相同明文密码多次可以生成不同的密文，而MD5相同密码则会生成相同的密文

3、后端添加数据简单实现

@PostMapping("/add")

ResultJson add(UmsAdmin umsAdmin) throws InterruptedException, IOException {

//对密码加密

umsAdmin.setPassword(passwordEncoder.encode(umsAdmin.getPassword()));

//TimeUnit.SECONDS.sleep(2);

return ResultJson.success(adminService.save(umsAdmin), "添加用户成功");

}

八、前端页面添加功能

1、添加用户(按钮和弹窗)

：elementUI按钮标签

添加用户

:title="dialog.title"

:visible.sync="dialog.show"

:close-on-click-modal="false"

width="450px">

(1)添加用户功能

add() {

this.dialog.show = true

this.dialog.title = "添加用户"

}

(2)添加内容弹窗

export default{

name: 'AdminEdit',

props:{

show:{

type: Boolean

}

},

data(){

return {

forms: {

loginName: '',

name: '',

password: '',

email: '',

phone: '',

imgobj: '这是一张图片'

},

rules:{

loginName:[

{required: true, message: '请输入登录名', trigger: 'blur'},

{min : 1, max: 20, message: '长度在1-20之间', trigger: 'change'}

],

name:[

{required: true, message: '请输入昵称', trigger: 'blur'},

{min : 1, max: 20, message: '长度在1-20之间', trigger: 'change'}

],

password:[

{required: true, message: '请输入密码', trigger: 'blur'},

{min : 1, max: 100, message: '长度在1-100之间', trigger: 'change'}

],

email:[

{required: true, message: '请输入邮箱', trigger: 'blur'},

{min : 1, max: 50, message: '长度在1-50之间', trigger: 'change'},

{type: 'email', message: '请输入正确格式的邮箱', trigger: 'blur'}

],

phone:[

{required: true, message: '请输入电话号', trigger: 'blur'},

{min : 1, max: 20, message: '长度在1-20之间', trigger: 'change'},

{pattern: /^1([38][0-9]|4[5-9]|5[0-3,5-9]|66|7[0-8]|9[89])[0-9]{8}$/, message: '请输入正确的手机号', trigger: 'blur'}

],

}

}

},

methods:{

save() {

//提交表单前需要对表单再次进行验证

//获取表单对象

//表单二次验证

this.$refs['ruleForm'].validate((flag) => {

//如果通过验证，则进行表单数据提交

if(flag === true) {

this.request('/umsadmin/add', 'post', this.forms, response => {

this.$message.success(response.message)

})

}

})

},

changeimg(file, fileList) {

this.forms.imgobj = file.raw

},

removeimg() {

this.forms.imgobj = null

}

}

}

2、此时前端给后端发post请求会出现跨域错误

跨域错误解决需要在后端植入跨域过滤器(Bean节点)

//跨域问题解决

@Bean

CorsFilter getCorsFilter() {

UrlBasedCorsConfigurationSource configurationSource = new UrlBasedCorsConfigurationSource();

CorsConfiguration corsConfiguration = new CorsConfiguration();

corsConfiguration.addAllowedHeader("*");

corsConfiguration.addAllowedMethod("*");

corsConfiguration.addAllowedOrigin("*"); //域名

configurationSource.registerCorsConfiguration("/**", corsConfiguration);

return new CorsFilter(configurationSource);

}

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