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mybatis-10-自动代码生成

2019-02-03 18:34:32【个人日记】539人已围观

简介不用再写简单的sql语句了,解放双手

自动代码生成

项目结构

代码生成器

==红色则为自动生成==

当生成好了记得在mybatis-config.xml里配置映射文件

配置文件generatorConfig.xml

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <!DOCTYPE generatorConfiguration
  3.         PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  4.         "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
  5. <generatorConfiguration>
  6.     <!--导入属性配置-->
  7.     <properties resource="jdbc.properties"></properties>
  8.     <context id="mysql" targetRuntime="MyBatis3">
  10.         <!-- 注释 -->
  11.         <commentGenerator>
  12.             <property name="suppressAllComments" value="true"/><!-- 是否取消注释 -->
  13.             <property name="suppressDate" value="true"/><!-- 是否生成注释代时间戳 -->
  14.         </commentGenerator>
  16.         <!--jdbc的数据库连接 -->
  17.         <jdbcConnection
  18.                 driverClass="${driverClassName}"
  19.                 connectionURL="${url}"
  20.                 userId="${username}"
  21.                 password="${password}">
  22.         </jdbcConnection>
  24.         <!-- 非必需，类型处理器，在数据库类型和java类型之间的转换控制-->
  25.         <javaTypeResolver>
  26.             <property name="forceBigDecimals" value="false"/>
  27.         </javaTypeResolver>
  29.         <!-- Model模型生成器,用来生成含有主键key的类，记录类 以及查询Example类
  30.             targetPackage     指定生成的model生成所在的包名
  31.             targetProject     指定在该项目下所在的路径
  32.         -->
  33.         <javaModelGenerator targetPackage="com.huangxin.order.model"
  34.                             targetProject="src/main/java">
  35.         </javaModelGenerator>
  37.         <!--Mapper映射文件生成所在的目录 为每一个数据库的表生成对应的SqlMap文件 -->
  38.         <sqlMapGenerator targetPackage="mapper"
  39.                          targetProject="src/main/resources">
  40.         </sqlMapGenerator>
  42.         <!-- 客户端代码，生成易于使用的针对Model对象和XML配置文件 的代码
  43.                 type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象
  44.                 type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象
  45.                 type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口
  46.         -->
  47.         <javaClientGenerator targetPackage="com.huangxin.order.mapper"
  48.                              targetProject="src/main/java" type="XMLMAPPER">
  49.             <property name="enableSubPackages" value="true"/>
  50.         </javaClientGenerator>
  52.         <!-- 数据表名及实体类名称  -->
  53.         <table tableName="user" domainObjectName="User"
  54.                enableCountByExample="false" enableUpdateByExample="false"
  55.                enableDeleteByExample="false" enableSelectByExample="false"
  56.                selectByExampleQueryId="false">
  57.         </table>
  58.     </context>
  59. </generatorConfiguration>

这是比较简洁的版本,网上可以搜索到各种配置以及说明

==注意信息填写,一定要对应==

需要的==自动生成的插件==

配置pom.xml文件,导入插件

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>mybatis-06</groupId>
  8.     <artifactId>mybatis06</artifactId>
  9.     <version>1.0-SNAPSHOT</version>
  10.     <dependencies>
  11.         <!--log记录-->
  12.         <dependency>
  13.             <groupId>log4j</groupId>
  14.             <artifactId>log4j</artifactId>
  15.             <version>1.2.17</version>
  16.         </dependency>
  17.         <!--MySQL驱动-->
  18.         <dependency>
  19.             <groupId>mysql</groupId>
  20.             <artifactId>mysql-connector-java</artifactId>
  21.             <version>5.1.46</version>
  22.         </dependency>
  23.         <!-- ibatis.jar -->
  24.         <dependency>
  25.             <groupId>org.mybatis</groupId>
  26.             <artifactId>mybatis</artifactId>
  27.             <version>3.4.6</version>
  28.         </dependency>
  29.         <!-- junit.jar -->
  30.         <dependency>
  31.             <groupId>junit</groupId>
  32.             <artifactId>junit</artifactId>
  33.             <version>4.12</version>
  34.             <scope>test</scope>
  35.         </dependency>
  36.         <!-- mybatis-generator自动生成代码插件 -->
  37.         <dependency>
  38.             <groupId>org.mybatis.generator</groupId>
  39.             <artifactId>mybatis-generator-core</artifactId>
  40.             <version>1.3.6</version>
  41.         </dependency>
  42.     </dependencies>
  44.     <!--  在build中加入以下插件  -->
  45.     <build>
  46.         <plugins>
  47.             <plugin>
  48.                 <groupId>org.mybatis.generator</groupId>
  49.                 <artifactId>mybatis-generator-maven-plugin</artifactId>
  50.                 <version>1.3.6</version>
  51.                 <configuration>
  52.                     <!--这是自动代码生成器的配置文件路径-->
  53.                     <configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
  54.                     <verbose>true</verbose>
  55.                     <overwrite>true</overwrite>
  56.                 </configuration>
  57.                 <dependencies>
  58.                     <dependency>
  59.                         <!--依赖的sql版本-->
  60.                         <groupId>mysql</groupId>
  61.                         <artifactId>mysql-connector-java</artifactId>
  62.                         <version>5.1.46</version>
  63.                         <scope>runtime</scope>
  64.                     </dependency>
  65.                 </dependencies>
  66.             </plugin>
  67.         </plugins>
  68.     </build>
  69. </project>

==注意配置文件的路径==

Mapper.xml文件

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
  3. <mapper namespace="com.huangxin.order.mapper.UserMapper">
  4.     <resultMap id="BaseResultMap" type="com.huangxin.order.model.User">
  5.         <id column="id" jdbcType="INTEGER" property="id"/>
  6.         <result column="user_name" jdbcType="VARCHAR" property="userName"/>
  7.         <result column="user_telephone" jdbcType="VARCHAR" property="userTelephone"/>
  8.         <result column="user_sex" jdbcType="VARCHAR" property="userSex"/>
  9.     </resultMap>
  10.     <sql id="Base_Column_List">
  11.     id, user_name, user_telephone, user_sex
  12.   </sql>
  13.     <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
  14.         select
  15.         <include refid="Base_Column_List"/>
  16.         from user
  17.         where id = #{id,jdbcType=INTEGER}
  18.     </select>
  19.     <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
  20.     delete from user
  21.     where id = #{id,jdbcType=INTEGER}
  22.   </delete>
  23.     <insert id="insert" parameterType="com.huangxin.order.model.User">
  24.     insert into user (id, user_name, user_telephone, 
  25.       user_sex)
  26.     values (#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{userTelephone,jdbcType=VARCHAR}, 
  27.       #{userSex,jdbcType=VARCHAR})
  28.   </insert>
  29.     <insert id="insertSelective" parameterType="com.huangxin.order.model.User">
  30.         insert into user
  31.         <trim prefix="(" suffix=")" suffixOverrides=",">
  32.             <if test="id != null">
  33.                 id,
  34.             </if>
  35.             <if test="userName != null">
  36.                 user_name,
  37.             </if>
  38.             <if test="userTelephone != null">
  39.                 user_telephone,
  40.             </if>
  41.             <if test="userSex != null">
  42.                 user_sex,
  43.             </if>
  44.         </trim>
  45.         <trim prefix="values (" suffix=")" suffixOverrides=",">
  46.             <if test="id != null">
  47.                 #{id,jdbcType=INTEGER},
  48.             </if>
  49.             <if test="userName != null">
  50.                 #{userName,jdbcType=VARCHAR},
  51.             </if>
  52.             <if test="userTelephone != null">
  53.                 #{userTelephone,jdbcType=VARCHAR},
  54.             </if>
  55.             <if test="userSex != null">
  56.                 #{userSex,jdbcType=VARCHAR},
  57.             </if>
  58.         </trim>
  59.     </insert>
  60.     <update id="updateByPrimaryKeySelective" parameterType="com.huangxin.order.model.User">
  61.         update user
  62.         <set>
  63.             <if test="userName != null">
  64.                 user_name = #{userName,jdbcType=VARCHAR},
  65.             </if>
  66.             <if test="userTelephone != null">
  67.                 user_telephone = #{userTelephone,jdbcType=VARCHAR},
  68.             </if>
  69.             <if test="userSex != null">
  70.                 user_sex = #{userSex,jdbcType=VARCHAR},
  71.             </if>
  72.         </set>
  73.         where id = #{id,jdbcType=INTEGER}
  74.     </update>
  75.     <update id="updateByPrimaryKey" parameterType="com.huangxin.order.model.User">
  76.     update user
  77.     set user_name = #{userName,jdbcType=VARCHAR},
  78.       user_telephone = #{userTelephone,jdbcType=VARCHAR},
  79.       user_sex = #{userSex,jdbcType=VARCHAR}
  80.     where id = #{id,jdbcType=INTEGER}
  81.   </update>
  82. </mapper>

==因为是机器自动生成的,所以看起来比较凌乱,如需加东西可以再次配置==

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