mybatis代码生成器实现方式

1.pom

 <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.4.0</version>
    </dependency>

2.mybatis-generator/generatorConfig.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>
    <context id="MySqlContext" targetRuntime="MyBatis3Simple" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>

        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <property name="addRemarkComments" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/blog"
                        userId="root"
                        password="123456">
        </jdbcConnection>

        <javaModelGenerator targetPackage="com.pab.data.datasource.entity" targetProject="src\main\java">
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="mapper" targetProject="src\main\resources">
        </sqlMapGenerator>

        <javaClientGenerator type="XMLMAPPER" targetPackage="com.pab.data.datasource.mapper" targetProject="src\main\java">
        </javaClientGenerator>
<!--        <table tableName="%">-->
        <!--指定表-->
        <table tableName="employee">
            <generatedKey column="id" sqlStatement="MySql"/>
        </table>
    </context>

</generatorConfiguration>

3.mybatis 代码生成器

/**
 * mybaits代码生成器
 */
public class Generator {
    public static void main(String[] args) throws Exception {
        //MBG 执行过程中的警告信息
        List<String> warnings = new ArrayList<String>();
        //当生成的代码重复时，覆盖原代码
        boolean overwrite = true;
        //读取我们的 MBG 配置文件
        InputStream is = org.mybatis.generator.api.MyBatisGenerator.class.getResourceAsStream("/mybatis-generator/generatorConfig.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(is);
        is.close();

        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        //创建 MBG
        org.mybatis.generator.api.MyBatisGenerator myBatisGenerator = new org.mybatis.generator.api.MyBatisGenerator(config, callback, warnings);
        //执行生成代码
        myBatisGenerator.generate(null);
        //输出警告信息
        for (String warning : warnings) {
            System.out.println(warning);
        }
    }
}