Mybatis Generator 使用笔记

1.导入jar包

Maven 地址
http://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core/1.3.6

<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.3.6</version>
</dependency>

2.xml配置文件

官网地址：http://www.mybatis.org/generator/configreference/xmlconfig.html

<?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">
        <commentGenerator>
            <!--去掉自动生成的注释-->
            <property name="suppressAllComments" value="true"></property>
        </commentGenerator>
        <!--指定数据库连接地址-->
        <jdbcConnection driverClass="oracle.jdbc.OracleDriver"
                        connectionURL="jdbc:oracle:thin:@localhost:1521:orcl"
                        userId="wolf"
                        password="123456">
        </jdbcConnection>
        <!--指定解析器-->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!--指定Javabean生成策略 targetPackage:生成位置 targetProject:目标工程 -->
        <javaModelGenerator targetPackage="com.fjsn.helloworld.bean" targetProject=".\src\main\java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!--sql映射文件生成策略-->
        <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!--指定dao位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.fjsn.helloworld.dao" targetProject=".\src\main\java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!--逆 tableName:数据库中的表名 domainObjectName:javabean-->
        <table  tableName="tb_employee" domainObjectName="Employee"></table>
        <table  tableName="tb_dept" domainObjectName="Department"></table>
    </context>
</generatorConfiguration>

注意事项：

xml文件最好放在项目根路径下

3.生成javabean完整代码:

贴上官网地址：http://www.mybatis.org/generator/running/runningWithJava.html

package wzb.test.mybatis.Generator;
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 MBGTest {
    public static void main(String[] args) throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("generatorConfig.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);
    }
}

需要注意的是 new File(“generatorConfig.xml”)这里的文件名字需要和你自己写的generator配置文件名一致。还有导的包是mybatis的包。