Mybatis——逆向工程

一、引入依赖

• mybatis-generator-core-1.3.2.jar

二、基于XML的配置

<?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>

    <!--
        targetRuntime="MyBatis3Simple":生成简单版的CRUD
        MyBatis3:豪华版

     -->
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <!-- jdbcConnection：指定如何连接到目标数据库 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/mybatis?allowMultiQueries=true"
                        userId="root"
                        password="1234">
        </jdbcConnection>

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

        <!-- javaModelGenerator：指定javaBean的生成策略
        targetPackage="test.model"：目标包名
        targetProject="\MBGTestProject\src"：目标工程
        -->
        <javaModelGenerator targetPackage="com.nchu.mybatis.bean"
                            targetProject=".\src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- sqlMapGenerator：sql映射生成策略： -->
        <sqlMapGenerator targetPackage="com.nchu.mybatis.dao"
                         targetProject=".\resourse\mapper">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- javaClientGenerator:指定mapper接口所在的位置 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.nchu.mybatis.dao"
                             targetProject=".\src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- 指定要逆向分析哪些表：根据表要创建javaBean -->
        <table tableName="tbl_dept" domainObjectName="Department"></table>
       <!-- <table tableName="tbl_employee" domainObjectName="Employee"></table>-->
    </context>
</generatorConfiguration>

三、Running MyBatis Generator

package com.nchu.mybatis.test;

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

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by yangshijing on 2017/12/22 0022.
 */
public class MybatisGenerotor {

    @Test
    public void test01() throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("MybatisGenerator.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);
    }

}