第一步：在pom.xml中匯入mybatis-generator工具包

<dependencies>
    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.6</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.8</version>
    </dependency>

</dependencies>
 

第二步:在project下建立一個mbg.xml配置檔案,修改定義

<?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>
    <!-- 指定驅動包 -->
  <classPathEntry location="C:\Users\Administrator\.m2\repository\mysql\mysql-connector-Java\5.1.8\mysql-connector-java-5.1.8.jar" />

    <!-- 指定連線引數 -->
  <context id="MySQLTables" targetRuntime="MyBatis3">
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
        connectionURL="jdbc:mysql://localhost:3306/studyonline"
        userId="root"
        password="1234">
    </jdbcConnection>

    <!-- 指定Java實體類存放包路徑 -->
    <javaModelGenerator targetPackage="cn.xdl.ovls.entity" targetProject=".\src\main\java">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
    </javaModelGenerator>

    <!-- 指定SQL定義XML檔案存放位置 -->
    <sqlMapGenerator targetPackage="cn.xdl.ovls.sql"  targetProject=".\src\main\java">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>

    <!-- 指定Mapper對映器介面存放位置Dao -->
    <!-- type指定為XMLMAPPER意思是生成SQL的XML檔案；
        type指定為ANNOTATEDMAPPER意思是將SQL生成到Mapper介面中，sqlMapGenerator無效 -->
    <javaClientGenerator type="ANNOTATEDMAPPER" targetPackage="cn.xdl.ovls.dao"  targetProject=".\src\main\java">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>

    <!-- 指定將哪些表生成 -->
    <table tableName="%" 
        enableCountByExample="false" enableSelectByExample="false"
        enableDeleteByExample="false" enableUpdateByExample="false">
    </table>

  </context>
</generatorConfiguration>
 

第三步：定義一個啟動類，載入mbg.xml執行生成工具

public class MyBatisRunner {

    public static void main(String[] args) throws Exception{
        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);
    }

}