Mabatis逆向工程

Posted 2022-03-26 江州益彤

1、引入mabatis逆向工程所需依赖

2、mbg.xml

参考http://mybatis.org/generator/

<?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">
  	<!-- 不生成注释 -->
  	<commentGenerator>
  		<property name="suppressAllComments" value="true"/>
  	</commentGenerator>
  	
  	<!-- 配置数据库连接 -->
    <jdbcConnection 
    	driverClass="com.mysql.cj.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/ssm_crud?serverTimezone=Hongkong"
        userId="root"
        password="75688">
    </jdbcConnection>

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

	<!-- 指定javaBean生成的位置 -->
    <javaModelGenerator 
    	targetProject=".\\src\\main\\java"
    	targetPackage="com.atguigu.crud.bean" >
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>
	
	<!--指定sql映射文件生成的位置-->
    <sqlMapGenerator 
    	targetProject=".\\src\\main\\resources"
    	targetPackage="mapper">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>

	<!--指定dao接口生成的位置，mapper接口-->
    <javaClientGenerator type="XMLMAPPER" 
    	targetProject=".\\src\\main\\java"
	    targetPackage="com.atguigu.crud.dao">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>

    <!-- table指定每个表的生成策略 -->
	<table tableName="tbl_emp" domainObjectName="Employee"></table>
	<table tableName="tbl_dept" domainObjectName="Department"></table>
  </context>
</generatorConfiguration>

3、使用逆向工程生成代码

参考官方文档

3.1、MBGTest.java

package com.atguigu.crud.test;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;

public class MBGTest 
	public static void main(String[] args) throws Exception, XMLParserException 
		System.out.println("============开始执行逆向工程============");
		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);
		System.out.println("============执行逆向工程结束============");
	

运行上面代码将自动生成逆向工程