mybatis逆向工程

目录结构

 

1.导入lib中的jar包

2.修改配置文件

<?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元素用于指定生成一组对象的环境。targetRuntime:此属性用于指定生成的代码的运行时环境。MyBatis3:*这是默认值*-->
    <context id="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true:是 : false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--数据库连接的信息:驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/mybatis?allowMultiQueries=true" userId="root"
            password="root">
        </jdbcConnection>
        <!-- 如使用oracle请参考如下 -->
        <!-- <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
            connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:orcl" 
            userId="scott"
            password="wcy675600920">
        </jdbcConnection> -->

        <!-- 默认false,把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer,为 true时把JDBC DECIMAL 和 
            NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO类的位置 -->
        <javaModelGenerator targetPackage="com.hxlz.po"
            targetProject=".src">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="com.hxlz.mapper" 
            targetProject=".src">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage:mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.hxlz.mapper" 
            targetProject=".src">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>
        
        <!-- 指定数据库表 -->
        <table tableName="items" schema="" enableCountByExample="false"
                enableDeleteByExample="false" enableUpdateByExample="false"
                enableSelectByExample="false" selectByExampleQueryId="false"></table>
                
        <table tableName="orders" schema="" enableCountByExample="false"
                enableDeleteByExample="false" enableUpdateByExample="false"
                enableSelectByExample="false" selectByExampleQueryId="false"></table>
        
        <table tableName="user" schema="" enableCountByExample="false"
                enableDeleteByExample="false" enableUpdateByExample="false"
                enableSelectByExample="false" selectByExampleQueryId="false"></table>
        <!-- 有些表的字段需要指定java类型
         <table schema="" tableName="">
            <columnOverride column="" javaType="" />
        </table> -->
    </context>
</generatorConfiguration>

3.运行主类

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.internal.DefaultShellCallback;

public class GeneratorSqlmap {

    public void generator() throws Exception{

        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        //指定 逆向工程配置文件
        File configFile = new File(getClass().getResource("config/generatorConfig.xml").getPath());
        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);

    } 
    public static void main(String[] args) throws Exception {
        try {
            GeneratorSqlmap generatorSqlmap = new GeneratorSqlmap();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
    }

}

原文地址:https://www.cnblogs.com/20158424-hxlz/p/8832199.html