1.在pom.xml中引入依賴

  <!--mybatis-generator 自動生成工具-->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>

2.建立mybatis-generator的配置檔案 mbg-config.xml

<?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>
    <!-- mvn mybatis-generator:generate -->
    <context id="Mysql" targetRuntime="MyBatis3" defaultModelType="flat">
        <!-- 生成的檔案編碼 -->
        <property name="javaFileEncoding" value="utf-8" />

        <!-- 註解 type="com.closet.ios.backend.MyCommentGenerator" -->
        <commentGenerator>
            <!-- <property name="suppressDate" value="true" /> -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <!-- JDBC 連線資訊 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/ssm_csdn"
                        userId="root"
                        password="">
            <!-- 針對mysql資料庫 -->
            <property name="useInformationSchema" value="true"></property>
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- 實體類生成配置 -->
        <javaModelGenerator targetPackage="com.swf.ssm.entity"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- mapper對映檔案生成配置 mapper目錄得提前建立好-->
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- mapper/dao介面生成配置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.swf.ssm.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- 資料表 有多張表就照此格式新增多個-->
        <table tableName="csdn_student" domainObjectName="Student"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false"></table>
  
    </context>
</generatorConfiguration>
 

3.建立一個java程式 執行MBG

public class Create {
	public void generator() throws Exception{
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("src/main/resources/mbg-config.xml"); //載入mybatis generator自動生成的配置檔案
        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 {
            Create generatorSqlmap = new Create();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
 

4.執行此程式

執行成功後，生成了三個檔案。 最後把3.處建立的java程式註釋掉，以防在後續編碼的過程中手滑啟動。