mybatis自动生成mapper.xml的方法

1. 首先添加maven插件

            <plugin>

                <groupId>org.mybatis.generator</groupId>

                <artifactId>mybatis-generator-maven-plugin</artifactId>

                <version>1.3.2</version>

                <configuration>

                    <configurationFile>src/test/resources/config/generatorConfig.xml</configurationFile>  //这是与数据库的配置地址

                    <verbose>true</verbose>

                    <overwrite>true</overwrite>

                </configuration>

            </plugin>

2.其次填写与数据库连接配置文件<?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 >

    <classPathEntry location="/Users/seabook.liu/.m2/repository/mysql/mysql-connector-java/5.1.6/mysql-connector-java-5.1.6.jar" />  

  <context id="context1" >

    <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test" userId="root" password="" />（数据库连接）

    <javaModelGenerator targetPackage="com.dianping.poi.updateflow.biz.model" targetProject="src/main/java">

        <property name="enableSubPackages" value="true" />

    </javaModelGenerator>

    <sqlMapGenerator targetPackage="config.sqlmap.updateflow"  targetProject="src/main/resources" >（生成的mapper文件）

        <property name="enableSubPackages" value="true" />

    </sqlMapGenerator>

    <javaClientGenerator targetPackage="com.dianping.poi.updateflow.biz.dao" targetProject="src/main/java" type="XMLMAPPER" >（生成的dao层接口）

        <property name="enableSubPackages" value="true" />

    </javaClientGenerator>

    <table schema="" tableName="POI_Shop"(数据库表名) domainObjectName="PoiShop"（生产的实体对象）

        enableCountByExample="true"

        enableUpdateByExample="true"  

        enableDeleteByExample="true"

        enableSelectByExample="true"

        selectByExampleQueryId="true"

        

        >

    </table>

  </context>

</generatorConfiguration>

3.利用maven命令自动生成

mybatis-generator:generate

4.最后能生成如下文件

只是实例一个

<?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="com.dianping.poi.updateflow.biz.dao.ProcInfoDao" >

  <resultMap id="BaseResultMap" type="com.dianping.poi.updateflow.biz.model.ProcInfo" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    <id column="proc_id" property="procId" jdbcType="INTEGER" />

    <result column="flow_id" property="flowId" jdbcType="INTEGER" />

    <result column="entry_id" property="entryId" jdbcType="INTEGER" />

    <result column="proc_type" property="procType" jdbcType="VARCHAR" />

    <result column="proc_status" property="procStatus" jdbcType="TINYINT" />

    <result column="editer_id" property="editerId" jdbcType="VARCHAR" />

    <result col
4000
umn="result" property="result" jdbcType="VARCHAR" />

    <result column="explain" property="explain" jdbcType="VARCHAR" />

    <result column="create_time" property="createTime" jdbcType="TIMESTAMP" />

    <result column="update_time" property="updateTime" jdbcType="TIMESTAMP" />

    <result column="ext" property="ext" jdbcType="VARCHAR" />

  </resultMap>

  <sql id="Example_Where_Clause" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    <where >

      <foreach collection="oredCriteria" item="criteria" separator="or" >

        <if test="criteria.valid" >

          <trim prefix="(" suffix=")" prefixOverrides="and" >

            <foreach collection="criteria.criteria" item="criterion" >

              <choose >

                <when test="criterion.noValue" >

                  and ${criterion.condition}

                </when>

                <when test="criterion.singleValue" >

                  and ${criterion.condition} #{criterion.value}

                </when>

                <when test="criterion.betweenValue" >

                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}

                </when>

                <when test="criterion.listValue" >

                  and ${criterion.condition}

                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >

                    #{listItem}

                  </foreach>

                </when>

              </choose>

            </foreach>

          </trim>

        </if>

      </foreach>

    </where>

  </sql>

  <sql id="Update_By_Example_Where_Clause" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    <where >

      <foreach collection="example.oredCriteria" item="criteria" separator="or" >

        <if test="criteria.valid" >

          <trim prefix="(" suffix=")" prefixOverrides="and" >

            <foreach collection="criteria.criteria" item="criterion" >

              <choose >

                <when test="criterion.noValue" >

                  and ${criterion.condition}

                </when>

                <when test="criterion.singleValue" >

                  and ${criterion.condition} #{criterion.value}

                </when>

                <when test="criterion.betweenValue" >

                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}

                </when>

                <when test="criterion.listValue" >

                  and ${criterion.condition}

                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >

                    #{listItem}

                  </foreach>

                </when>

              </choose>

            </foreach>

          </trim>

        </if>

      </foreach>

    </where>

  </sql>

  <sql id="Base_Column_List" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    proc_id, flow_id, entry_id, proc_type, proc_status, editer_id, result, explain, create_time,

    update_time, ext

  </sql>

  <select id="selectByExample" resultMap="BaseResultMap" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfoExample" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    select

    <if test="distinct" >

      distinct

    </if>

    'true' as QUERYID,

    <include refid="Base_Column_List" />

    from POI_ProcInfo

    <if test="_parameter != null" >

      <include refid="Example_Where_Clause" />

    </if>

    <if test="orderByClause != null" >

      order by ${orderByClause}

    </if>

  </select>

  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    select

    <include refid="Base_Column_List" />

    from POI_ProcInfo

    where proc_id = #{procId,jdbcType=INTEGER}

  </select>

  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    delete from POI_ProcInfo

    where proc_id = #{procId,jdbcType=INTEGER}

  </delete>

  <delete id="deleteByExample" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfoExample" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    delete from POI_ProcInfo

    <if test="_parameter != null" >

      <include refid="Example_Where_Clause" />

    </if>

  </delete>

  <insert id="insert" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfo" useGeneratedKeys="true" keyProperty="procId">

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    insert into POI_ProcInfo (proc_id, flow_id, entry_id,

      proc_type, proc_status, editer_id,

      result, explain, create_time,

      update_time, ext)

    values (#{procId,jdbcType=INTEGER}, #{flowId,jdbcType=INTEGER}, #{entryId,jdbcType=INTEGER},

      #{procType,jdbcType=VARCHAR}, #{procStatus,jdbcType=TINYINT}, #{editerId,jdbcType=VARCHAR},

      #{result,jdbcType=VARCHAR}, #{explain,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP},

      #{updateTime,jdbcType=TIMESTAMP}, #{ext,jdbcType=VARCHAR})

  </insert>

  <insert id="insertSelective" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfo" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    insert into POI_ProcInfo

    <trim prefix="(" suffix=")" suffixOverrides="," >

      <if test="procId != null" >

        proc_id,

      </if>

      <if test="flowId != null" >

        flow_id,

      </if>

      <if test="entryId != null" >

        entry_id,

      </if>

      <if test="procType != null" >

        proc_type,

      </if>

      <if test="procStatus != null" >

        proc_status,

      </if>

      <if test="editerId != null" >

        editer_id,

      </if>

      <if test="result != null" >

        result,

      </if>

      <if test="explain != null" >

        explain,

      </if>

      <if test="createTime != null" >

        create_time,

      </if>

      <if test="updateTime != null" >

        update_time,

      </if>

      <if test="ext != null" >

        ext,

      </if>

    </trim>

    <trim prefix="values (" suffix=")" suffixOverrides="," >

      <if test="procId != null" >

        #{procId,jdbcType=INTEGER},

      </if>

      <if test="flowId != null" >

        #{flowId,jdbcType=INTEGER},

      </if>

      <if test="entryId != null" >

        #{entryId,jdbcType=INTEGER},

      </if>

      <if test="procType != null" >

        #{procType,jdbcType=VARCHAR},

      </if>

      <if test="procStatus != null" >

        #{procStatus,jdbcType=TINYINT},

      </if>

      <if test="editerId != null" >

        #{editerId,jdbcType=VARCHAR},

      </if>

      <if test="result != null" >

        #{result,jdbcType=VARCHAR},

      </if>

      <if test="explain != null" >

        #{explain,jdbcType=VARCHAR},

      </if>

      <if test="createTime != null" >

        #{createTime,jdbcType=TIMESTAMP},

      </if>

      <if test="updateTime != null" >

        #{updateTime,jdbcType=TIMESTAMP},

      </if>

      <if test="ext != null" >

        #{ext,jdbcType=VARCHAR},

      </if>

    </trim>

  </insert>

  <select id="countByExample" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfoExample" resultType="java.lang.Integer" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    select count(*) from POI_ProcInfo

    <if test="_parameter != null" >

      <include refid="Example_Where_Clause" />

    </if>

  </select>

  <update id="updateByExampleSelective" parameterType="map" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    update POI_ProcInfo

    <set >

      <if test="record.procId != null" >

        proc_id = #{record.procId,jdbcType=INTEGER},

      </if>

      <if test="record.flowId != null" >

        flow_id = #{record.flowId,jdbcType=INTEGER},

      </if>

      <if test="record.entryId != null" >

        entry_id = #{record.entryId,jdbcType=INTEGER},

      </if>

      <if test="record.procType != null" >

        proc_type = #{record.procType,jdbcType=VARCHAR},

      </if>

      <if test="record.procStatus != null" >

        proc_status = #{record.procStatus,jdbcType=TINYINT},

      </if>

      <if test="record.editerId != null" >

        editer_id = #{record.editerId,jdbcType=VARCHAR},

      </if>

      <if test="record.result != null" >

        result = #{record.result,jdbcType=VARCHAR},

      </if>

      <if test="record.explain != null" >

        explain = #{record.explain,jdbcType=VARCHAR},

      </if>

      <if test="record.createTime != null" >

        create_time = #{record.createTime,jdbcType=TIMESTAMP},

      </if>

      <if test="record.updateTime != null" >

        update_time = #{record.updateTime,jdbcType=TIMESTAMP},

      </if>

      <if test="record.ext != null" >

        ext = #{record.ext,jdbcType=VARCHAR},

      </if>

    </set>

    <if test="_parameter != null" >

      <include refid="Update_By_Example_Where_Clause" />

    </if>

  </update>

  <update id="updateByExample" parameterType="map" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    update POI_ProcInfo

    set proc_id = #{record.procId,jdbcType=INTEGER},

      flow_id = #{record.flowId,jdbcType=INTEGER},

      entry_id = #{record.entryId,jdbcType=INTEGER},

      proc_type = #{record.procType,jdbcType=VARCHAR},

      proc_status = #{record.procStatus,jdbcType=TINYINT},

      editer_id = #{record.editerId,jdbcType=VARCHAR},

      result = #{record.result,jdbcType=VARCHAR},

      explain = #{record.explain,jdbcType=VARCHAR},

      create_time = #{record.createTime,jdbcType=TIMESTAMP},

      update_time = #{record.updateTime,jdbcType=TIMESTAMP},

      ext = #{record.ext,jdbcType=VARCHAR}

    <if test="_parameter != null" >

      <include refid="Update_By_Example_Where_Clause" />

    </if>

  </update>

  <update id="updateByPrimaryKeySelective" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfo" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.<
b0ca
br />
    -->

    update POI_ProcInfo

    <set >

      <if test="flowId != null" >

        flow_id = #{flowId,jdbcType=INTEGER},

      </if>

      <if test="entryId != null" >

        entry_id = #{entryId,jdbcType=INTEGER},

      </if>

      <if test="procType != null" >

        proc_type = #{procType,jdbcType=VARCHAR},

      </if>

      <if test="procStatus != null" >

        proc_status = #{procStatus,jdbcType=TINYINT},

      </if>

      <if test="editerId != null" >

        editer_id = #{editerId,jdbcType=VARCHAR},

      </if>

      <if test="result != null" >

        result = #{result,jdbcType=VARCHAR},

      </if>

      <if test="explain != null" >

        explain = #{explain,jdbcType=VARCHAR},

      </if>

      <if test="createTime != null" >

        create_time = #{createTime,jdbcType=TIMESTAMP},

      </if>

      <if test="updateTime != null" >

        update_time = #{updateTime,jdbcType=TIMESTAMP},

      </if>

      <if test="ext != null" >

        ext = #{ext,jdbcType=VARCHAR},

      </if>

    </set>

    where proc_id = #{procId,jdbcType=INTEGER}

  </update>

  <update id="updateByPrimaryKey" parameterType="com.dianping.poi.updateflow.biz.model.ProcInfo" >

    <!--

      WARNING - @mbggenerated

      This element is automatically generated by MyBatis Generator, do not modify.

      This element was generated on Tue Jul 28 16:24:30 CST 2015.

    -->

    update POI_ProcInfo

    set flow_id = #{flowId,jdbcType=INTEGER},

      entry_id = #{entryId,jdbcType=INTEGER},

      proc_type = #{procType,jdbcType=VARCHAR},

      proc_status = #{procStatus,jdbcType=TINYINT},

      editer_id = #{editerId,jdbcType=VARCHAR},

      result = #{result,jdbcType=VARCHAR},

      explain = #{explain,jdbcType=VARCHAR},

      create_time = #{createTime,jdbcType=TIMESTAMP},

      update_time = #{updateTime,jdbcType=TIMESTAMP},

      ext = #{ext,jdbcType=VARCHAR}

    where proc_id = #{procId,jdbcType=INTEGER}

  </update>

</mapper>