Springboot的Mybatis逆向工程

1、pom.xml添加mybatis和逆向插件依赖：

<dependency>

	<groupId>org.mybatis.spring.boot</groupId>

	<artifactId>mybatis-spring-boot-starter</artifactId>

	<version>1.3.2</version>

</dependency>

<!-- mybatis-generator-core 反向生成java代码-->

<dependency>

	<groupId>org.mybatis.generator</groupId>

	<artifactId>mybatis-generator-core</artifactId>

	<version>1.3.5</version>

</dependency>

2、application.properties配置数据库连接信息：

#mysql数据配置

spring.datasource.driverClassName=com.mysql.jdbc.Driver

spring.datasource.url=jdbc:mysql://localhost:3306/test?useSSL=false&useUnicode=true&characterEncoding=utf-8

spring.datasource.username=test

spring.datasource.password=test

3、写mybatis-generator.xml文件：

<?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">

<!-- mybatis逆向生成xml配置 -->

<generatorConfiguration>

    <properties resource="application.properties" /> <!-- 数据库连接配置文件 -->

    <context id="sqlserverTables" targetRuntime="MyBatis3">

        <!-- 生成的pojo，将implements Serializable-->

        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>

        <commentGenerator>

            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->

            <property name="suppressAllComments" value="true" />

        </commentGenerator>

        <!-- 数据库链接URL、用户名、密码 -->

        <jdbcConnection driverClass="${spring.datasource.driverClassName}"

                        connectionURL="${spring.datasource.url}"

                        userId="${spring.datasource.username}"

                        password="${spring.datasource.password}">

        </jdbcConnection>

        <!--

            默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer

            true，把JDBC DECIMAL 和 NUMERIC 类型解析为java.math.BigDecimal

        -->

        <javaTypeResolver>

            <property name="forceBigDecimals" value="false" />

        </javaTypeResolver>

        <!--

            生成model模型，对应的包路径，以及文件存放路径(targetProject)，targetProject可以指定具体的路径,如./src/main/java，

            也可以使用“MAVEN”来自动生成，这样生成的代码会在target/generatord-source目录下

        -->

        <!--<javaModelGenerator targetPackage="com.joey.mybaties.test.pojo" targetProject="MAVEN">-->

        <javaModelGenerator targetPackage="com.example.demo.entity" targetProject="./src/main/java">

            <property name="enableSubPackages" value="true"/>

            <!-- 从数据库返回的值被清理前后的空格  -->

            <property name="trimStrings" value="true" />

        </javaModelGenerator>

        <!--对应的mapper.xml文件  -->

        <sqlMapGenerator targetPackage="config/xml" targetProject="./src/main/resources">

            <property name="enableSubPackages" value="true"/>

        </sqlMapGenerator>

        <!-- 对应的Mapper接口类文件 -->

        <javaClientGenerator type="XMLMAPPER" targetPackage="com.example.demo.mapper" targetProject="./src/main/java">

            <property name="enableSubPackages" value="true"/>

        </javaClientGenerator>

        <!-- 列出要生成代码的所有表，这里配置的是不生成Example文件 -->

        <table tableName="user_info" domainObjectName="UserInfo"

               enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false"

               enableSelectByExample="false" selectByExampleQueryId="false" >

            <property name="useActualColumnNames" value="false"/>

        </table>

    </context>

</generatorConfiguration>

4、编写GenMain.java类：

package com.example.demo.CodeGenerator;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.sql.SQLException;

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.exception.InvalidConfigurationException;

import org.mybatis.generator.exception.XMLParserException;

import org.mybatis.generator.internal.DefaultShellCallback;

import org.springframework.util.ResourceUtils;

/**************************************

* 类说明:

*     mybatis逆向工程main函数

***************************************

*/

public class GenMain {

    public static void main(String[] args) throws FileNotFoundException {

        List<String> warnings = new ArrayList<String>();

        boolean overwrite = true;

        //如果这里出现空指针，直接写绝对路径即可。

        String genCfg = "E:\\cloud\\demo\\src\\test\\resources\\config\\mybatis-generator.xml";

//        File configFile = new File(GenMain.class.getResource(genCfg).getFile()); //获取路径出错

        File configFile = ResourceUtils.getFile(genCfg);

        ConfigurationParser cp = new ConfigurationParser(warnings);

        Configuration config = null;

        try {

            config = cp.parseConfiguration(configFile);

        } catch (IOException e) {

            e.printStackTrace();

        } catch (XMLParserException e) {

            e.printStackTrace();

        }

        DefaultShellCallback callback = new DefaultShellCallback(overwrite);

        MyBatisGenerator myBatisGenerator = null;

        try {

            myBatisGenerator = new MyBatisGenerator(config, callback, warnings);

        } catch (InvalidConfigurationException e) {

            e.printStackTrace();

        }

        try {

            myBatisGenerator.generate(null);

        } catch (SQLException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        } catch (InterruptedException e) {

            e.printStackTrace();

        }

    }

}

5、运行GenMain.java类的main方法，刷新项目即可。