使用mybatis配置映射文件,有点麻烦,容易出错,可以使用jar工具自动生成代码,即高效又方便
一、下载两个jar,并放置在G: oolmavengenerator目录下(自己定义)
mybatis-generator-core-1.3.2.jar
mysql-connector-java-5.1.34.jar
二、建立do表
user_info 表,id,name,password
三、配置 generator.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> <!-- 数据库驱动包位置 --> <classPathEntry location="G: oolmavengeneratormysql-connector-java-5.1.34.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://localhost:3306/testdb" userId="root" password="root"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 生成模型的包名和位置 --> <javaModelGenerator targetPackage="com.yuanmeng.springdemo.model" targetProject="G: oolmavengeneratorsrc"> <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.yuanmeng.springdemo.mapping" targetProject="G: oolmavengeneratorsrc"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 生成DAO的包名和位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.yuanmeng.springdemo.dao" targetProject="G: oolmavengeneratorsrc"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 要生成那些表(更改tableName和domainObjectName就可以) --> <table tableName="user_info" domainObjectName="UserInfo" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" /> </context> </generatorConfiguration>
四、进入G: oolmavengenerator下,执行命令java -jar mybatis-generator-core-1.3.2.jar -configfile generator.xml –overwrite 即可生成代码