标签:doctype   googl   model   ima   property   download   doc   cmd命令   介绍   
由于MyBatis属于一种半自动的ORM框架,所以主要的工作将是书写Mapping映射文件,但是由于手写映射文件很容易出错,所以查资料发现有现成的工具可以自动生成底层模型类、Dao接口类甚至Mapping映射文件。
一、建立表结构
CREATE TABLE `user` (
  `id` varchar(50) NOT NULL,
  `username` varchar(18) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  `password` varchar(18) DEFAULT NULL,
  `email` varchar(50) DEFAULT NULL,
  `name` varchar(18) DEFAULT NULL,
  `sex` varchar(2) DEFAULT NULL,
  `birthday` varchar(50) DEFAULT NULL,
  `address` varchar(500) DEFAULT NULL,
  `tel` varchar(18) DEFAULT NULL,
  `qq` varchar(18) DEFAULT NULL,
  `image` varchar(50) DEFAULT NULL,
  `sfjh` varchar(1) DEFAULT NULL,
  `sfzx` varchar(1) DEFAULT NULL,
  `sfhf` varchar(1) DEFAULT NULL,
  `sfpl` varchar(1) DEFAULT NULL,
  `sffx` varchar(1) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf-8;
二、下载mybatis-generator-core
进入:http://code.google.com/p/mybatis/
选择Downloads,再选择MyBatis Generator Tool下载即可。
三、生成配置文件
新建一个空的XML配置文件,名称可以随便取,这里以generatorConfig.xml为名。最好将这个文件放在下载后的lib目录中,如图:

其中mysql的驱动可以随便放在非中文路径的地方,这里为了方便就放在lib目录下。
自动生成最重要的就是配置文件的书写,现在就开始介绍generatorConfig.xml这个文件的具体内容:
 
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<?xml version="1.0" encoding="UTF-8"?> 
 
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<!DOCTYPE generatorConfiguration 
 
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  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" 
 
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  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> 
 
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	<classPathEntry	location="mysql-connector-java-5.0.6-bin.jar"/> 
 
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	<context id="DB2Tables"	targetRuntime="MyBatis3"> 
 
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			<property name="suppressDate" value="true"/> 
 
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			<property name="suppressAllComments" value="true"/> 
 
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		<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/test" userId="test" password="test"> 
 
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			<property name="forceBigDecimals" value="false"/> 
 
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		<javaModelGenerator targetPackage="test.model" targetProject="src"> 
 
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			<property name="enableSubPackages" value="true"/> 
 
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			<property name="trimStrings" value="true"/> 
 
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		<sqlMapGenerator targetPackage="test.mapping" targetProject="src"> 
 
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			<property name="enableSubPackages" value="true"/> 
 
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		<javaClientGenerator type="XMLMAPPER" targetPackage="test.dao" targetProject="src"> 
 
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			<property name="enableSubPackages" value="true"/> 
 
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		<table tableName="about" domainObjectName="AboutDto" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> 
 
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		<table tableName="user" domainObjectName="UserDto" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> 
 
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		<table tableName="syslogs" domainObjectName="SyslogsDto" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> 
 
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</generatorConfiguration> 
 
1、其中需要注意的有数据库驱动、数据库URL、用户名、密码、生成模型的包名和位置、生成映射文件的包名和位置、生成DAO的包名和位置以及最后需要生成的表名和对应的类名。
 
 
四、运行
需要通过CMD命令行方式来运行,首先可以先准备一个运行的脚本,这里使用的脚本是:java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig.xml -overwrite
需要注意的是:mybatis-generator-core-1.3.2.jar为下载的对应版本的jar,generatorConfig.xml 为配置文件名,如果不为这个可以在这里进行修改。
启动cmd进入到“F:\soft\mybatis-generator-core-1.3.2\lib”这个目录下,如图:

生成成功后进到src目录下,可以看到已经生成了对应的model、dao、mapping,如图:

下面可以看看生成后的UserMapper.xml
 
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<?xml version="1.0" encoding="UTF-8" ?> 
 
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > 
 
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<mapper namespace="test.dao.UserDtoMapper" > 
 
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  <resultMap id="BaseResultMap" type="test.model.UserDto" > 
 
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    <id column="id" property="id" jdbcType="VARCHAR" /> 
 
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    <result column="username" property="username" jdbcType="VARCHAR" /> 
 
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    <result column="password" property="password" jdbcType="VARCHAR" /> 
 
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    <result column="email" property="email" jdbcType="VARCHAR" /> 
 
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    <result column="name" property="name" jdbcType="VARCHAR" /> 
 
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    <result column="sex" property="sex" jdbcType="VARCHAR" /> 
 
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    <result column="birthday" property="birthday" jdbcType="VARCHAR" /> 
 
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    <result column="address" property="address" jdbcType="VARCHAR" /> 
 
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    <result column="tel" property="tel" jdbcType="VARCHAR" /> 
 
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    <result column="qq" property="qq" jdbcType="VARCHAR" /> 
 
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    <result column="image" property="image" jdbcType="VARCHAR" /> 
 
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    <result column="sfjh" property="sfjh" jdbcType="VARCHAR" /> 
 
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    <result column="sfzx" property="sfzx" jdbcType="VARCHAR" /> 
 
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    <result column="sfhf" property="sfhf" jdbcType="VARCHAR" /> 
 
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    <result column="sfpl" property="sfpl" jdbcType="VARCHAR" /> 
 
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    <result column="sffx" property="sffx" jdbcType="VARCHAR" /> 
 
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  <sql id="Base_Column_List" > 
 
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    id, username, password, email, name, sex, birthday, address, tel, qq, image, sfjh,  
 
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  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" > 
 
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    <include refid="Base_Column_List" /> 
 
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    where id = #{id,jdbcType=VARCHAR} 
 
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  <delete id="deleteByPrimaryKey" parameterType="java.lang.String" > 
 
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    where id = #{id,jdbcType=VARCHAR} 
 
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  <insert id="insert" parameterType="test.model.UserDto" > 
 
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    insert into user (id, username, password,  
 
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      email, name, sex, birthday,  
 
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    values (#{id,jdbcType=VARCHAR}, #{username,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR},  
 
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      #{email,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR}, #{sex,jdbcType=VARCHAR}, #{birthday,jdbcType=VARCHAR},  
 
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      #{address,jdbcType=VARCHAR}, #{tel,jdbcType=VARCHAR}, #{qq,jdbcType=VARCHAR}, #{image,jdbcType=VARCHAR},  
 
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      #{sfjh,jdbcType=VARCHAR}, #{sfzx,jdbcType=VARCHAR}, #{sfhf,jdbcType=VARCHAR}, #{sfpl,jdbcType=VARCHAR},  
 
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      #{sffx,jdbcType=VARCHAR}) 
 
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  <insert id="insertSelective" parameterType="test.model.UserDto" > 
 
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    <trim prefix="(" suffix=")" suffixOverrides="," > 
 
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      <if test="username != null" > 
 
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      <if test="password != null" > 
 
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      <if test="email != null" > 
 
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      <if test="name != null" > 
 
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      <if test="birthday != null" > 
 
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      <if test="address != null" > 
 
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      <if test="image != null" > 
 
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      <if test="sfjh != null" > 
 
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      <if test="sfzx != null" > 
 
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      <if test="sfhf != null" > 
 
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      <if test="sfpl != null" > 
 
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      <if test="sffx != null" > 
 
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    <trim prefix="values (" suffix=")" suffixOverrides="," > 
 
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      <if test="username != null" > 
 
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        #{username,jdbcType=VARCHAR}, 
 
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      <if test="password != null" > 
 
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        #{password,jdbcType=VARCHAR}, 
 
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      <if test="email != null" > 
 
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        #{email,jdbcType=VARCHAR}, 
 
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      <if test="name != null" > 
 
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        #{name,jdbcType=VARCHAR}, 
 
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      <if test="birthday != null" > 
 
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        #{birthday,jdbcType=VARCHAR}, 
 
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      <if test="address != null" > 
 
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        #{address,jdbcType=VARCHAR}, 
 
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      <if test="image != null" > 
 
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        #{image,jdbcType=VARCHAR}, 
 
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      <if test="sfjh != null" > 
 
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        #{sfjh,jdbcType=VARCHAR}, 
 
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      <if test="sfzx != null" > 
 
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        #{sfzx,jdbcType=VARCHAR}, 
 
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      <if test="sfhf != null" > 
 
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        #{sfhf,jdbcType=VARCHAR}, 
 
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      <if test="sfpl != null" > 
 
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        #{sfpl,jdbcType=VARCHAR}, 
 
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      <if test="sffx != null" > 
 
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        #{sffx,jdbcType=VARCHAR}, 
 
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  <update id="updateByPrimaryKeySelective" parameterType="test.model.UserDto" > 
 
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      <if test="username != null" > 
 
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        username = #{username,jdbcType=VARCHAR}, 
 
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      <if test="password != null" > 
 
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        password = #{password,jdbcType=VARCHAR}, 
 
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      <if test="email != null" > 
 
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        email = #{email,jdbcType=VARCHAR}, 
 
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      <if test="name != null" > 
 
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        name = #{name,jdbcType=VARCHAR}, 
 
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        sex = #{sex,jdbcType=VARCHAR}, 
 
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      <if test="birthday != null" > 
 
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        birthday = #{birthday,jdbcType=VARCHAR}, 
 
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      <if test="address != null" > 
 
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        address = #{address,jdbcType=VARCHAR}, 
 
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        tel = #{tel,jdbcType=VARCHAR}, 
 
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        qq = #{qq,jdbcType=VARCHAR}, 
 
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      <if test="image != null" > 
 
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        image = #{image,jdbcType=VARCHAR}, 
 
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      <if test="sfjh != null" > 
 
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        sfjh = #{sfjh,jdbcType=VARCHAR}, 
 
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      <if test="sfzx != null" > 
 
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        sfzx = #{sfzx,jdbcType=VARCHAR}, 
 
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      <if test="sfhf != null" > 
 
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        sfhf = #{sfhf,jdbcType=VARCHAR}, 
 
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      <if test="sfpl != null" > 
 
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        sfpl = #{sfpl,jdbcType=VARCHAR}, 
 
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      <if test="sffx != null" > 
 
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        sffx = #{sffx,jdbcType=VARCHAR}, 
 
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    where id = #{id,jdbcType=VARCHAR} 
 
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  <update id="updateByPrimaryKey" parameterType="test.model.UserDto" > 
 
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    set username = #{username,jdbcType=VARCHAR}, 
 
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      password = #{password,jdbcType=VARCHAR}, 
 
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      email = #{email,jdbcType=VARCHAR}, 
 
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      name = #{name,jdbcType=VARCHAR}, 
 
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      sex = #{sex,jdbcType=VARCHAR}, 
 
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      birthday = #{birthday,jdbcType=VARCHAR}, 
 
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      address = #{address,jdbcType=VARCHAR}, 
 
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      tel = #{tel,jdbcType=VARCHAR}, 
 
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      qq = #{qq,jdbcType=VARCHAR}, 
 
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      image = #{image,jdbcType=VARCHAR}, 
 
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      sfjh = #{sfjh,jdbcType=VARCHAR}, 
 
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      sfzx = #{sfzx,jdbcType=VARCHAR}, 
 
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      sfhf = #{sfhf,jdbcType=VARCHAR}, 
 
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      sfpl = #{sfpl,jdbcType=VARCHAR}, 
 
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      sffx = #{sffx,jdbcType=VARCHAR} 
 
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    where id = #{id,jdbcType=VARCHAR} 
 
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接下来就可以将这三个目录拷贝到对应项目的目录中,如果需要新增自己的方法可以修改dao类。
MyBatis学习4---使用MyBatis_Generator生成Dto、Dao、Mapping
标签:doctype   googl   model   ima   property   download   doc   cmd命令   介绍   
原文地址:https://www.cnblogs.com/borter/p/9569961.html