IDEA 通过Mybatis generator简单的创建****导出dao、mapper等文件

文件结构

注意，这里我将generatorConfig.xml文件放到了src目录下，即：与main在同级目录

配置信息

pom.xml文件内容：主要功能是导入jar包--一般需要3个jar包：

数据库连接jar包

<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.9</version>
</dependency>

Mybatis包

<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>3.4.6</version>
</dependency>

Mybatis generator core 包

<dependency>
 <groupId>org.mybatis.generator</groupId>
  <artifactId>mybatis-generator-core</artifactId>
  <version>1.3.2</version>
</dependency>

pom.xml 内容汇总

<dependencies>

  <dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.3.2</version>
  </dependency>

  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.9</version>
  </dependency>

  <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.6</version>
  </dependency>


</dependencies>

generatorConfig.xml文件内容：

其中标红的需要着重修改

<?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>

    <!-- id是唯一标示，可以任意修改 -->
    <context id="MyGenerator" targetRuntime="MyBatis3">

        <!-- 该标签可以去掉生成的java文件中的注释 -->
        <commentGenerator>
            <!-- 去掉注释 -->
            <property name="suppressAllComments" value="true"/>
            <!-- 去掉时间戳 -->
            <property name="suppressDate" value="true"/>
        </commentGenerator>


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

        <!-- 数据类型的转换参考连接 -->
        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetPackage： 输入包名 输出路径    targetProject： 输出项目位置  -->
        <javaModelGenerator targetPackage="main.java.com.hmy.bean" targetProject="src">
            <!-- enableSubPackages：是否开启子包名称  是否在包名后面加上scheme名称 -->
            <property name="enableSubPackages" value="false" />
            <!-- 在Set中加入trim 去逗号 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- mapper配置 -->
        <sqlMapGenerator targetPackage="main.java.com.hmy.mapper"  targetProject="src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- java接口 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="main.java.com.hmy.mapper"  targetProject="src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!-- 数据表 要根据数据库中的表来生成  -->
        <table tableName="table_1"/>
        <table tableName="table_2"/>

        <!--     <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >
              <property name="useActualColumnNames" value="true"/>
              <generatedKey column="ID" sqlStatement="DB2" identity="true" />
              <columnOverride column="DATE_FIELD" property="startDate" />
              <ignoreColumn column="FRED" />
              <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" />
            </table>
         -->
    </context>
</generatorConfiguration>

Test.java 文件内容：

注意generatorConfig.xml文件的路径

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 Test {


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

最后就是运行一下Test文件，大功告成！