一。使用mybatis generator自动生成文件

a. pom.xml文件中添加依赖

、、、
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
</dependenciels>

<build>
<defaultGoal>compile</defaultGoal>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>

</plugins>

<resources>

        <!--打包进XML等文件，排除java及版本控制文件  -->
        <resource>

             <directory>src/main/java</directory>

         </resource>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.*</include>
                <include>**/*.*</include>
            </includes>
        </resource>
    </resources>
</build>

、、、

b.下载mysql driver

、、、
mysql-connector-java-5.1.11-bin.jar
、、、

c. 编写generatorConfig.xml文件
该文件放到src／main／resources下

、、、
<?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>

<!-- 数据库驱动包位置 -->

<classPathEntry location="/Users/jing/Desktop/mysql-connector-java-5.1.11-bin.jar"/>

<context id="DB2Tables" targetRuntime="MyBatis3">

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

    <!-- 数据库链接URL、用户名、密码 -->
    <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://hostName:port/db"
                    userId="username" password="password">
    </jdbcConnection>

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

    <!-- 生成模型的包名和位置 -->
    <javaModelGenerator targetPackage="com.luck.auto.autoTest.domain" targetProject="src/main/java">
        <property name="enableSubPackages" value="true"/>
        <property name="trimStrings" value="true"/>

    </javaModelGenerator>
    <!-- 生成的映射文件包名和位置 -->
    <sqlMapGenerator targetPackage="com.luck.auto.autoTest.mapper" targetProject="src/main/resources">
        <property name="enableSubPackages" value="true"/>
    </sqlMapGenerator>

    <!-- 生成DAO的包名和位置 -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.luck.auto.autoTest.dao" targetProject="src/main/java">
        <property name="enableSubPackages" value="true"/>
    </javaClientGenerator>

    <!-- 要生成那些表(更改tableName和domainObjectName就可以) -->
    <table tableName="bd_notice" domainObjectName="DbNotice" enableCountByExample="false" enableUpdateByExample="true"
           enableDeleteByExample="true" enableSelectByExample="true" selectByExampleQueryId="true"/>
</context>

</generatorConfiguration>
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d. cd 到该工程的文件夹下

执行语句

mvn mybatis-generator:generate

生成三个文件：

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