参考文献:http://www.cnblogs.com/smileberry/p/4145872.html
一、所需库:
1、mysql-connector
2、连接DB的驱动(此以mysql为例)
二、当前目录结构如下:
- 目录src用于放生成的文件
- generatorConfig.xml为配置文件,指定了连接的DB、要生成文件的表、文件的输出目录等,内容如下:
<?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--> <classPathEntry location="mysql-connector-java-5.1.38.jar"/> <context id="DB2Tables" targetRuntime="MyBatis3"> <commentGenerator> <property name="suppressDate" value="true"/> <property name="suppressAllComments" value="true"/> </commentGenerator> <!--数据库链接地址账号密码--> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://192.168.6.131:3306/zhxpost" userId="xiaozhang" password="123456"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <!--生成Model类存放位置--> <javaModelGenerator targetPackage="zsm.model" targetProject="src"> <property name="enableSubPackages" value="true"/> <property name="trimStrings" value="true"/> </javaModelGenerator> <!--生成映射文件存放位置--> <sqlMapGenerator targetPackage="zsm.mapping" targetProject="src"> <property name="enableSubPackages" value="true"/> </sqlMapGenerator> <!--生成Dao类存放位置--> <javaClientGenerator type="XMLMAPPER" targetPackage="zsm.dao" targetProject="src"> <property name="enableSubPackages" value="true"/> </javaClientGenerator> <!--生成对应表及类名--> <table tableName="test_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> </context> </generatorConfiguration>
三、运行
运行如下命令:
java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig.xml -overwrite
根据generatorConfig.xml里的配置,生成文件如下:
四、结果
1、model中的User.java:
package zsm.model; public class User { private Integer id; private String name; private Byte age; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name == null ? null : name.trim(); } public Byte getAge() { return age; } public void setAge(Byte age) { this.age = age; } }
2、dao中的UserMapper.java:
package zsm.dao; import zsm.model.User; public interface UserMapper { int deleteByPrimaryKey(Integer id); int insert(User record); int insertSelective(User record); User selectByPrimaryKey(Integer id); int updateByPrimaryKeySelective(User record); int updateByPrimaryKey(User record); }
3、mapping中的UserMapper.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="zsm.dao.UserMapper"> <resultMap id="BaseResultMap" type="zsm.model.User"> <id column="id" jdbcType="INTEGER" property="id" /> <result column="name" jdbcType="VARCHAR" property="name" /> <result column="age" jdbcType="TINYINT" property="age" /> </resultMap> <sql id="Base_Column_List"> id, name, age </sql> <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap"> select <include refid="Base_Column_List" /> from test_user where id = #{id,jdbcType=INTEGER} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer"> delete from test_user where id = #{id,jdbcType=INTEGER} </delete> <insert id="insert" parameterType="zsm.model.User"> insert into test_user (id, name, age ) values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=TINYINT} ) </insert> <insert id="insertSelective" parameterType="zsm.model.User"> insert into test_user <trim prefix="(" suffix=")" suffixOverrides=","> <if test="id != null"> id, </if> <if test="name != null"> name, </if> <if test="age != null"> age, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides=","> <if test="id != null"> #{id,jdbcType=INTEGER}, </if> <if test="name != null"> #{name,jdbcType=VARCHAR}, </if> <if test="age != null"> #{age,jdbcType=TINYINT}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="zsm.model.User"> update test_user <set> <if test="name != null"> name = #{name,jdbcType=VARCHAR}, </if> <if test="age != null"> age = #{age,jdbcType=TINYINT}, </if> </set> where id = #{id,jdbcType=INTEGER} </update> <update id="updateByPrimaryKey" parameterType="zsm.model.User"> update test_user set name = #{name,jdbcType=VARCHAR}, age = #{age,jdbcType=TINYINT} where id = #{id,jdbcType=INTEGER} </update> <resultMap id="BaseResultMap" type="zsm.model.User"> <id column="id" jdbcType="INTEGER" property="id" /> <result column="name" jdbcType="VARCHAR" property="name" /> <result column="age" jdbcType="TINYINT" property="age" /> </resultMap> <sql id="Base_Column_List"> id, name, age </sql> <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap"> select <include refid="Base_Column_List" /> from test_user where id = #{id,jdbcType=INTEGER} </select> <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer"> delete from test_user where id = #{id,jdbcType=INTEGER} </delete> <insert id="insert" parameterType="zsm.model.User"> insert into test_user (id, name, age ) values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=TINYINT} ) </insert> <insert id="insertSelective" parameterType="zsm.model.User"> insert into test_user <trim prefix="(" suffix=")" suffixOverrides=","> <if test="id != null"> id, </if> <if test="name != null"> name, </if> <if test="age != null"> age, </if> </trim> <trim prefix="values (" suffix=")" suffixOverrides=","> <if test="id != null"> #{id,jdbcType=INTEGER}, </if> <if test="name != null"> #{name,jdbcType=VARCHAR}, </if> <if test="age != null"> #{age,jdbcType=TINYINT}, </if> </trim> </insert> <update id="updateByPrimaryKeySelective" parameterType="zsm.model.User"> update test_user <set> <if test="name != null"> name = #{name,jdbcType=VARCHAR}, </if> <if test="age != null"> age = #{age,jdbcType=TINYINT}, </if> </set> where id = #{id,jdbcType=INTEGER} </update> <update id="updateByPrimaryKey" parameterType="zsm.model.User"> update test_user set name = #{name,jdbcType=VARCHAR}, age = #{age,jdbcType=TINYINT} where id = #{id,jdbcType=INTEGER} </update> </mapper>
时间: 2024-10-07 17:53:30