spring-mybatis.xml mapper.xml写法总结

最新推荐文章于 2025-07-10 11:28:21 发布

原创最新推荐文章于 2025-07-10 11:28:21 发布 · 715 阅读

2 ·

CC 4.0 BY-SA版权

文章标签：

#spring-mybatis.xml #mybatis

本文详细介绍了SpringMVC、Spring和MyBatis三个框架的整合过程，包括配置文件设置、数据库连接池搭建、DAO层实现等，并深入探讨了MyBatis的高级用法，如动态SQL、参数传递方式及结果映射。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">

 
    <!-- 配置数据库相关参数properties的属性：${url} -->
    <context:property-placeholder location="classpath*:jdbc.properties"/>

    <!-- 数据库连接池 value与db.properties一致-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.user}"/>
        <property name="password" value="${jdbc.pass}"/>
    </bean>

    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath*:mapper/*.xml"></property>
    </bean>

    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ssm.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory" />
    </bean>

    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

</beans>

Mybatis Generator 配置详解转： https://www.imooc.com/article/21444

mapper.xml

1. /**************************** 商品搜索 ***********************************/

    SELECT
    <include refid="Base_Column_List" />
    from mmall_product
    where name like #{productName}
        and id = #{productId}
    </where>

// 根据productName 或 productId搜索我们要的是‘或’关系而不是并

正确的是：

    <where>  用where标签无需考虑where后面的条件   它把and替换成where
      <if test="productName != null">
    and name like #{productName}
      </if>
      <if test="productId != null">
    and id = #{productId}
      </if>
    </where>

<select id="selectByNameAndProductId" parameterType="map" resultMap="BaseResultMap">

 parameterType="map" resultMap="BaseResultMap"是因为
 List<Product> productList = productMapper.selectByNameAndProductId(productName,productId);

<?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.mmall.dao.ProductMapper">
  <resultMap id="BaseResultMap" type="com.mmall.pojo.Product">
    <constructor>
      <idArg column="id" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="category_id" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="name" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="subtitle" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="main_image" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="sub_images" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="detail" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="price" javaType="java.math.BigDecimal" jdbcType="DECIMAL" />
      <arg column="stock" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="status" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="create_time" javaType="java.util.Date" jdbcType="TIMESTAMP" />
      <arg column="update_time" javaType="java.util.Date" jdbcType="TIMESTAMP" />
    </constructor>
  </resultMap>
  <sql id="Base_Column_List">
    id, category_id, name, subtitle, main_image, sub_images, detail, price, stock, status, 
    create_time, update_time
  </sql>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from mmall_product
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from mmall_product
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="com.mmall.pojo.Product">
    insert into mmall_product (id, category_id, name, 
      subtitle, main_image, sub_images, 
      detail, price, stock, 
      status, create_time, update_time
      )
    values (#{id,jdbcType=INTEGER}, #{categoryId,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, 
      #{subtitle,jdbcType=VARCHAR}, #{mainImage,jdbcType=VARCHAR}, #{subImages,jdbcType=VARCHAR}, 
      #{detail,jdbcType=VARCHAR}, #{price,jdbcType=DECIMAL}, #{stock,jdbcType=INTEGER}, 
      #{status,jdbcType=INTEGER}, #{createTime,jdbcType=TIMESTAMP}, #{updateTime,jdbcType=TIMESTAMP}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.mmall.pojo.Product">
    insert into mmall_product
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="id != null">
        id,
      </if>
      <if test="categoryId != null">
        category_id,
      </if>
      <if test="name != null">
        name,
      </if>
      <if test="subtitle != null">
        subtitle,
      </if>
      <if test="mainImage != null">
        main_image,
      </if>
      <if test="subImages != null">
        sub_images,
      </if>
      <if test="detail != null">
        detail,
      </if>
      <if test="price != null">
        price,
      </if>
      <if test="stock != null">
        stock,
      </if>
      <if test="status != null">
        status,
      </if>
      <if test="createTime != null">
        create_time,
      </if>
      <if test="updateTime != null">
        update_time,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="id != null">
        #{id,jdbcType=INTEGER},
      </if>
      <if test="categoryId != null">
        #{categoryId,jdbcType=INTEGER},
      </if>
      <if test="name != null">
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="subtitle != null">
        #{subtitle,jdbcType=VARCHAR},
      </if>
      <if test="mainImage != null">
        #{mainImage,jdbcType=VARCHAR},
      </if>
      <if test="subImages != null">
        #{subImages,jdbcType=VARCHAR},
      </if>
      <if test="detail != null">
        #{detail,jdbcType=VARCHAR},
      </if>
      <if test="price != null">
        #{price,jdbcType=DECIMAL},
      </if>
      <if test="stock != null">
        #{stock,jdbcType=INTEGER},
      </if>
      <if test="status != null">
        #{status,jdbcType=INTEGER},
      </if>
      <if test="createTime != null">
        #{createTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null">
        #{updateTime,jdbcType=TIMESTAMP},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.mmall.pojo.Product">
    update mmall_product
    <set>
      <if test="categoryId != null">
        category_id = #{categoryId,jdbcType=INTEGER},
      </if>
      <if test="name != null">
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="subtitle != null">
        subtitle = #{subtitle,jdbcType=VARCHAR},
      </if>
      <if test="mainImage != null">
        main_image = #{mainImage,jdbcType=VARCHAR},
      </if>
      <if test="subImages != null">
        sub_images = #{subImages,jdbcType=VARCHAR},
      </if>
      <if test="detail != null">
        detail = #{detail,jdbcType=VARCHAR},
      </if>
      <if test="price != null">
        price = #{price,jdbcType=DECIMAL},
      </if>
      <if test="stock != null">
        stock = #{stock,jdbcType=INTEGER},
      </if>
      <if test="status != null">
        status = #{status,jdbcType=INTEGER},
      </if>
      <if test="createTime != null">
        create_time = #{createTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null">
        update_time = #{updateTime,jdbcType=TIMESTAMP},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.mmall.pojo.Product">
    update mmall_product
    set category_id = #{categoryId,jdbcType=INTEGER},
      name = #{name,jdbcType=VARCHAR},
      subtitle = #{subtitle,jdbcType=VARCHAR},
      main_image = #{mainImage,jdbcType=VARCHAR},
      sub_images = #{subImages,jdbcType=VARCHAR},
      detail = #{detail,jdbcType=VARCHAR},
      price = #{price,jdbcType=DECIMAL},
      stock = #{stock,jdbcType=INTEGER},
      status = #{status,jdbcType=INTEGER},
      create_time = #{createTime,jdbcType=TIMESTAMP},
      update_time = #{updateTime,jdbcType=TIMESTAMP}
    where id = #{id,jdbcType=INTEGER}
  </update>
  <resultMap id="BaseResultMap" type="com.mmall.pojo.Product">
    <constructor>
      <idArg column="id" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="category_id" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="name" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="subtitle" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="main_image" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="sub_images" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="detail" javaType="java.lang.String" jdbcType="VARCHAR" />
      <arg column="price" javaType="java.math.BigDecimal" jdbcType="DECIMAL" />
      <arg column="stock" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="status" javaType="java.lang.Integer" jdbcType="INTEGER" />
      <arg column="create_time" javaType="java.util.Date" jdbcType="TIMESTAMP" />
      <arg column="update_time" javaType="java.util.Date" jdbcType="TIMESTAMP" />
    </constructor>
  </resultMap>
  <sql id="Base_Column_List">
    id, category_id, name, subtitle, main_image, sub_images, detail, price, stock, status, 
    create_time, update_time
  </sql>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from mmall_product
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from mmall_product
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="com.mmall.pojo.Product">
    insert into mmall_product (id, category_id, name, 
      subtitle, main_image, sub_images, 
      detail, price, stock, 
      status, create_time, update_time
      )
    values (#{id,jdbcType=INTEGER}, #{categoryId,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, 
      #{subtitle,jdbcType=VARCHAR}, #{mainImage,jdbcType=VARCHAR}, #{subImages,jdbcType=VARCHAR}, 
      #{detail,jdbcType=VARCHAR}, #{price,jdbcType=DECIMAL}, #{stock,jdbcType=INTEGER}, 
      #{status,jdbcType=INTEGER}, now(), now()
      )
  </insert>
  <insert id="insertSelective" parameterType="com.mmall.pojo.Product">
    insert into mmall_product
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="id != null">
        id,
      </if>
      <if test="categoryId != null">
        category_id,
      </if>
      <if test="name != null">
        name,
      </if>
      <if test="subtitle != null">
        subtitle,
      </if>
      <if test="mainImage != null">
        main_image,
      </if>
      <if test="subImages != null">
        sub_images,
      </if>
      <if test="detail != null">
        detail,
      </if>
      <if test="price != null">
        price,
      </if>
      <if test="stock != null">
        stock,
      </if>
      <if test="status != null">
        status,
      </if>
      <if test="createTime != null">
        create_time,
      </if>
      <if test="updateTime != null">
        update_time,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="id != null">
        #{id,jdbcType=INTEGER},
      </if>
      <if test="categoryId != null">
        #{categoryId,jdbcType=INTEGER},
      </if>
      <if test="name != null">
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="subtitle != null">
        #{subtitle,jdbcType=VARCHAR},
      </if>
      <if test="mainImage != null">
        #{mainImage,jdbcType=VARCHAR},
      </if>
      <if test="subImages != null">
        #{subImages,jdbcType=VARCHAR},
      </if>
      <if test="detail != null">
        #{detail,jdbcType=VARCHAR},
      </if>
      <if test="price != null">
        #{price,jdbcType=DECIMAL},
      </if>
      <if test="stock != null">
        #{stock,jdbcType=INTEGER},
      </if>
      <if test="status != null">
        #{status,jdbcType=INTEGER},
      </if>
      <if test="createTime != null">
        now(),
      </if>
      <if test="updateTime != null">
        now(),
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.mmall.pojo.Product">
    update mmall_product
    <set>
      <if test="categoryId != null">
        category_id = #{categoryId,jdbcType=INTEGER},
      </if>
      <if test="name != null">
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="subtitle != null">
        subtitle = #{subtitle,jdbcType=VARCHAR},
      </if>
      <if test="mainImage != null">
        main_image = #{mainImage,jdbcType=VARCHAR},
      </if>
      <if test="subImages != null">
        sub_images = #{subImages,jdbcType=VARCHAR},
      </if>
      <if test="detail != null">
        detail = #{detail,jdbcType=VARCHAR},
      </if>
      <if test="price != null">
        price = #{price,jdbcType=DECIMAL},
      </if>
      <if test="stock != null">
        stock = #{stock,jdbcType=INTEGER},
      </if>
      <if test="status != null">
        status = #{status,jdbcType=INTEGER},
      </if>
      <if test="createTime != null">
        create_time = #{createTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null">
        update_time = now(),
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.mmall.pojo.Product">
    update mmall_product
    set category_id = #{categoryId,jdbcType=INTEGER},
      name = #{name,jdbcType=VARCHAR},
      subtitle = #{subtitle,jdbcType=VARCHAR},
      main_image = #{mainImage,jdbcType=VARCHAR},
      sub_images = #{subImages,jdbcType=VARCHAR},
      detail = #{detail,jdbcType=VARCHAR},
      price = #{price,jdbcType=DECIMAL},
      stock = #{stock,jdbcType=INTEGER},
      status = #{status,jdbcType=INTEGER},
      create_time = #{createTime,jdbcType=TIMESTAMP},
      update_time = now()
    where id = #{id,jdbcType=INTEGER}
  </update>


  <select id="selectList" resultMap="BaseResultMap">
    SELECT
    <include refid="Base_Column_List" />
    from mmall_product
    ORDER BY id asc
  </select>


  <select id="selectByNameAndProductId" parameterType="map" resultMap="BaseResultMap">
    SELECT
    <include refid="Base_Column_List" />
    from mmall_product
    <where>
      <if test="productName != null">
        and name like #{productName}
      </if>
      <if test="productId != null">
        and id = #{productId}
      </if>
    </where>
  </select>
  
  <select id="selectByNameAndCategoryIds" parameterType="map" resultMap="BaseResultMap">
    SELECT
    <include refid="Base_Column_List" />
    from mmall_product
    where status = 1
    <if test="productName != null">
      and name like #{productName}
    </if>
    <if test="categoryIdList != null">
      and category_id in
      <foreach close=")" collection="categoryIdList" index="index" item="item" open="(" separator=",">
        #{item}
      </foreach>
    </if>
  </select>

</mapper>