001.mybatis逆向工程

1. 新建java项目 

那我的毕设开刀

2.在根目录下  新建文件夹  lib

3.将  jar包放入lib中

4.将lib文件夹   add as library

5. 创建generator.xml文件

从此文件夹中

打开index.html文件 

找到 

复制如下内容到generator.xml中

6. 改配置文件 

注： 

targetPackage="com.ybj.newWebsite.dao"    这个是目标包下
targetProject="src\main\java"   这个是目标项目下

二者是可以联通的   ------src\main\java\com.ybj.newWebsite.dao  即 targetProject\targetPackage

<?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>

    <!--数据库配置-->
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/newswebsite?useUnicode=true&amp;characterEncoding=utf8"
                        userId="root"
                        password="312ybj">
        </jdbcConnection>

        <!--java类型转换-->
        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!--model生成包名和位置-->
        <javaModelGenerator targetPackage="com.ybj.newWebsite.model" targetProject="src\main\java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!--mybatis的映射  .xml-->
        <sqlMapGenerator targetPackage="com.ybj.newWebsite.mapper"  targetProject="src\main\java">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!--mybatis mapper接口生成的dao包路径-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.ybj.newWebsite.dao"  targetProject="src\main\java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!--配置生成表的模型-->
        <table tableName="user" domainObjectName="user" ></table>
        <table tableName="article" domainObjectName="article" ></table>
        <table tableName="comment" domainObjectName="comment" ></table>

    </context>
</generatorConfiguration>

7. 写个main方法，  进行逆向工程

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;

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

public class main {
    public static class Generator {
        public static void main(String[] args)  throws Exception{
            List<String> warnings = new ArrayList<String>();
            boolean overwrite = true;
            File configFile = new File("src/generator.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);
        }
    }
}