Mybatis_Plus如何根据数据库表结构自动生成springMvc的代码

基于Mybatis的Mybatis_Plus是如何自动生成对应的springmvc的代码了

      你必须了解springmvc

首先第一步配置

pom.xml

applicationContext.xml
db.properties
log4j.xml
mybatis-config.xml

1.0 pom.xml配置

<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.atguigu.mp</groupId>
  <artifactId>mp01</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <dependencies>
      <!-- mp依赖
          mybatisPlus 会自动的维护Mybatis 以及MyBatis-spring相关的依赖
       -->
      <dependency>
          <groupId>com.baomidou</groupId>
          <artifactId>mybatis-plus</artifactId>
          <version>2.3</version>
      </dependency>     
      <!--junit -->
      <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>4.9</version>
      </dependency>
      <!-- log4j -->
      <dependency>
         <groupId>log4j</groupId>
         <artifactId>log4j</artifactId>
         <version>1.2.17</version>
      </dependency>
      <!-- c3p0 -->
      <dependency>
         <groupId>com.mchange</groupId>
         <artifactId>c3p0</artifactId>
         <version>0.9.5.2</version>
      </dependency>
      <!-- mysql -->
      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <version>5.1.37</version>
      </dependency>
      <!-- spring -->
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-context</artifactId>
         <version>4.3.10.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-orm</artifactId>
         <version>4.3.10.RELEASE</version>
      </dependency>
      <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-webmvc</artifactId>
         <version>4.3.10.RELEASE</version>
      </dependency>
      
      <!-- Apache velocity -->
      <dependency>
          <groupId>org.apache.velocity</groupId>
          <artifactId>velocity-engine-core</artifactId>
          <version>2.0</version>
      </dependency>
      
      <!-- sfl4j -->
       <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-api</artifactId>
         <version>1.7.7</version>
      </dependency>
      <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-log4j12</artifactId>
         <version>1.7.7</version>
      </dependency>
      
  
  </dependencies>
  
  
</project>

2.0 applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:tx="http://www.springframework.org/schema/tx"
   xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
   xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
   
   
   <!-- 数据源 -->
   <context:property-placeholder location="classpath:db.properties"/>
   <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
      <property name="driverClass" value="${jdbc.driver}"></property>
      <property name="jdbcUrl" value="${jdbc.url}"></property>
      <property name="user" value="${jdbc.username}"></property>
      <property name="password" value="${jdbc.password}56"></property>
   </bean>
   
   <!-- 事务管理器 -->
   <bean id="dataSourceTransactionManager" 
      class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      <property name="dataSource" ref="dataSource"></property>
   </bean>
   <!-- 基于注解的事务管理 -->
   <tx:annotation-driven transaction-manager="dataSourceTransactionManager"/>
   
   
   <!--  配置SqlSessionFactoryBean 
      Mybatis提供的: org.mybatis.spring.SqlSessionFactoryBean
      MP提供的:com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean
    -->
   <bean id="sqlSessionFactoryBean" class="com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean">
      <!-- 数据源 -->
      <property name="dataSource" ref="dataSource"></property>
      <property name="configLocation" value="classpath:mybatis-config.xml"></property>
      <!-- 别名处理 -->
      <property name="typeAliasesPackage" value="com.atguigu.mp.beans"></property>      
      
      <!-- 注入全局MP策略配置 -->
      <property name="globalConfig" ref="globalConfiguration"></property>
      
   </bean>
   
   <!-- 定义MybatisPlus的全局策略配置-->
   <bean id ="globalConfiguration" class="com.baomidou.mybatisplus.entity.GlobalConfiguration">
      <!-- 在2.3版本以后，dbColumnUnderline 默认值就是true -->
      <property name="dbColumnUnderline" value="true"></property>
      
      <!-- 全局的主键策略 -->
      <property name="idType" value="0"></property>
      
      <!-- 全局的表前缀策略配置 -->
      <property name="tablePrefix" value="tbl_"></property>
      
      
      
   
   </bean>
   
   
   
   
   
   <!-- 
      配置mybatis 扫描mapper接口的路径
    -->
   <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <property name="basePackage" value="com.atguigu.mp.mapper"></property>
   </bean>
   
   
</beans>

3.0 db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mp
jdbc.username=root
jdbc.password=123456

4.0 log4j.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
 
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
 
 <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
   <param name="Encoding" value="UTF-8" />
   <layout class="org.apache.log4j.PatternLayout">
    <param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m  (%F:%L) \n" />
   </layout>
 </appender>
 <logger name="java.sql">
   <level value="debug" />
 </logger>
 <logger name="org.apache.ibatis">
   <level value="info" />
 </logger>
 <root>
   <level value="debug" />
   <appender-ref ref="STDOUT" />
 </root>
</log4j:configuration>

5.0 mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
</configuration>

第二步就是在test书写创建自动编写代码的配置了

public class TestMP {
   
   
   /**
    * 代码生成    示例代码
    */
   @Test
   public void  testGenerator() {
      //1. 全局配置
      GlobalConfig config = new GlobalConfig();
      config.setActiveRecord(true) // 是否支持AR模式
           .setAuthor("weiyunhui") // 作者
           .setOutputDir("D:\\BaiduNetdiskDownload\\Mybatispuls视屏\\MyBatisPlus\\代码\\mp03\\src\\main\\java") 
// 生成路径这里是是你生成的Java代码的的路径
           .setFileOverride(true)  // 文件覆盖
           .setIdType(IdType.AUTO) // 主键策略
           .setServiceName("%sService")  // 设置生成的service接口的名字的首字母是否为I
                           // IEmployeeService
           .setBaseResultMap(true)
           .setBaseColumnList(true);
      
      //2. 数据源配置
      DataSourceConfig  dsConfig  = new DataSourceConfig();
      dsConfig.setDbType(DbType.MYSQL)  // 设置数据库类型
            .setDriverName("com.mysql.jdbc.Driver")
            .setUrl("jdbc:mysql://localhost:3306/mp")
            .setUsername("root")
            .setPassword("123456");
       
      //3. 策略配置
      StrategyConfig stConfig = new StrategyConfig();
      stConfig.setCapitalMode(true) //全局大写命名
            .setDbColumnUnderline(true)  // 指定表名 字段名是否使用下划线
            .setNaming(NamingStrategy.underline_to_camel) // 数据库表映射到实体的命名策略
            .setTablePrefix("tbl_")
            .setInclude("tbl_employee")
            .setInclude("tbl_admin");  // 生成的表
      
      //4. 包名策略配置 
      PackageConfig pkConfig = new PackageConfig();
      pkConfig.setParent("com.atguigu.mp")
            .setMapper("mapper")  //新增Mapper的文件夹
            .setService("service") //新增Service的文件夹
            .setController("controller") //新增controller的文件夹
            .setEntity("beans") //新增beans的文件夹
            .setXml("mapper"); //新增mapper.xml
      
      //5. 整合配置
      AutoGenerator  ag = new AutoGenerator();
      
      ag.setGlobalConfig(config)

        .setDataSource(dsConfig)
        .setStrategy(stConfig)
        .setPackageInfo(pkConfig);
      
      //6. 执行
      ag.execute();
   }

   
   
   
}

最后一步就是运行test了

下载源码：  https://download.csdn.net/download/weixin_40864484/10561412