Mybatis逆向工程

Posted 2020-12-19 tiantongtong

1、在pom.xml中添加

<dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.3.5</version>
</dependency>

2、在项目下创建mbg.xml,内容如下，可修改成自己的包路径

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE generatorConfiguration

  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"

  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

 

  <context id="DB2Tables" targetRuntime="MyBatis3">

  <!-- 逆向工程生成时不要注释 -->

  <commentGenerator>

  <property name="suppressAllComments" value="true" />

</commentGenerator>

  

  <!-- 配置数据库连接信息 -->

    <jdbcConnection driverClass="com.mysql.jdbc.Driver"

        connectionURL="jdbc:mysql://localhost:3306/mon201903"

        userId="root"

        password="1234">

    </jdbcConnection>

 

<!-- 不管先 -->

    <javaTypeResolver >

      <property name="forceBigDecimals" value="false" />

    </javaTypeResolver>

 

<!-- 指定JavaBean生成的位置 -->

    <javaModelGenerator 

    targetPackage="com.sun.bean" 

    targetProject=".srcmainjava">

      <property name="enableSubPackages" value="true" />

      <property name="trimStrings" value="true" />

    </javaModelGenerator>

 

<!-- 指定sql映射文件生成位置 -->

    <sqlMapGenerator 

    targetPackage="mapper"  

    targetProject=".srcmain esources">

      <property name="enableSubPackages" value="true" />

    </sqlMapGenerator>

 

<!-- 指定dao接口生成位置 -->

    <javaClientGenerator type="XMLMAPPER" 

    targetPackage="com.sun.dao"  

    targetProject=".srcmainjava">

      <property name="enableSubPackages" value="true" />

    </javaClientGenerator>

 

 

<!-- table指定每个表生成策略,指定实体类Bean的类名 -->

    <table tableName="tab_emp" domainObjectName="Employee"></table>

    <table tableName="tab_dept" domainObjectName="Dept"></table>

 

  </context>

</generatorConfiguration>

3、编写测试类

public class Test {
public static void main(String[] args) throws Exception {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File("mbg.xml");
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
}
}