搭建：使用Mybatis-Generator自动生成Dao、Model、Mapping相关文件

使用Mybatis-Generator自动生成Dao、Model、Mapping相关文件

一、在pom.xml中配置

< build >

    < plugins >

        < plugin >

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

            <artifactId> mybatis-generator-maven-plugin </artifactId>

            <version> 1.3.5 </version>

            < configuration >

                <!--配置文件的位置-->

               <configurationFile> src/main/resources/generatorConfig.xml </configurationFile>

                < verbose > true </ verbose >

                < overwrite > true </ overwrite >

            </ configuration >

            < executions >

                < execution >

                    < id > Generate MyBatis Artifacts </ id >

                    < goals >

                        < goal > generate </ goal >

                    </ goals >

                </ execution >

            </ executions >

            < dependencies >

                < dependency >

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

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

                    < version > 1.3.5 </ version >

                </ dependency >

            </ dependencies >

        </ plugin >

        < plugin >

            < groupId > org.springframework.boot </ groupId >

            < artifactId > spring-boot-maven-plugin </ artifactId >

        </ plugin >

    </ plugins >

</ build >

配置完后reimport刷新一下

二、配置 generatorConfig.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" >

< generatorConfiguration >

    <!--mysql 连接数据库jar 这里选择自己本地位置-->

   <classPathEntry location="F:\repository\mysql\mysql-connector-java\5.1.29\mysql-connector-java-5.1.29.jar" />

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

        < commentGenerator >

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

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

        </ commentGenerator >

        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"

                        connectionURL="jdbc:mysql://localhost:3306/mysql" userId="root"

                        password="123456">

        </jdbcConnection>

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和

           NUMERIC 类型解析为java.math.BigDecimal -->

        < javaTypeResolver >

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

        </ javaTypeResolver >

        <!-- targetProject:生成PO类的位置 -->

        <javaModelGenerator targetPackage="com.model"

                            targetProject="src/main/java">

            <!-- enableSubPackages:是否让schema作为包的后缀 -->

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

            <!-- 从数据库返回的值被清理前后的空格 -->

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

        </javaModelGenerator>

        <!-- targetProject:mapper映射文件生成的位置

           如果maven工程只是单独的一个工程，targetProject="src/main/java"

           若果maven工程是分模块的工程，targetProject="所属模块的名称"，例如：

           targetProject="ecps-manager-mapper"，下同-->

        <sqlMapGenerator targetPackage="com.mapper"

                         targetProject="src/main/java">

            <!-- enableSubPackages:是否让schema作为包的后缀 -->

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

        </sqlMapGenerator>

        <!-- targetPackage：mapper接口生成的位置 -->

        <javaClientGenerator type="XMLMAPPER"

                             targetPackage="com.dao"

                             targetProject="src/main/java">

            <!-- enableSubPackages:是否让schema作为包的后缀 -->

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

        </javaClientGenerator>

        <!-- 指定数据库表 -->

        <table tableName="mybatis_user" domainObjectName="user"

               enableCountByExample="false" enableUpdateByExample="false"

               enableDeleteByExample="false" enableSelectByExample="false"

               selectByExampleQueryId="false">

        </ table >

    </ context >

</ generatorConfiguration >

1、添加本地包地址

2、填写连接数据库字符串

3、添加model路径、添加mapper路径、添加dao路径

4、添加要生成的数据库表

注意：如果使用IDEA  mapper文件需要放到resources目录下面，因为IDEA默认不加载java下面xml文件

三、自动生成相关文件

双击mybatis-generator：gererate完成自动生成相关文件