Mybatis实现浏览的分页查询效果将结果展示-----Mybatis框架

发布于：2023-09-22 ⋅ 阅读:(67) ⋅ 点赞:(0) 
<?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.powernode.mybatis.mappers.CarMapper">
  <resultMap id="BaseResultMap" type="com.powernode.mybatis.pojo.Car">
    <id column="id" jdbcType="BIGINT" property="id" />
    <result column="car_num" jdbcType="VARCHAR" property="carNum" />
    <result column="brand" jdbcType="VARCHAR" property="brand" />
    <result column="guide_price" jdbcType="DECIMAL" property="guidePrice" />
    <result column="produce_time" jdbcType="CHAR" property="produceTime" />
    <result column="car_type" jdbcType="VARCHAR" property="carType" />
  </resultMap>
  <sql id="Example_Where_Clause">
    <where>
      <foreach collection="oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <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 close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <select id="selectByPage" resultType="car">
    select * from t_car limit #{startIndex},#{pageSize}
  </select>
  <sql id="Update_By_Example_Where_Clause">
    <where>
      <foreach collection="example.oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <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 close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List">
    id, car_num, brand, guide_price, produce_time, car_type
  </sql>
  <select id="selectByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultMap="BaseResultMap">
    select
    <if test="distinct">
      distinct
    </if>
    <include refid="Base_Column_List" />
    from t_car
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from t_car
    where id = #{id,jdbcType=BIGINT}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
    delete from t_car
    where id = #{id,jdbcType=BIGINT}
  </delete>
  <delete id="deleteByExample" parameterType="com.powernode.mybatis.pojo.CarExample">
    delete from t_car
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.powernode.mybatis.pojo.Car">
    insert into t_car (id, car_num, brand, 
      guide_price, produce_time, car_type
      )
    values (#{id,jdbcType=BIGINT}, #{carNum,jdbcType=VARCHAR}, #{brand,jdbcType=VARCHAR}, 
      #{guidePrice,jdbcType=DECIMAL}, #{produceTime,jdbcType=CHAR}, #{carType,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.powernode.mybatis.pojo.Car">
    insert into t_car
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="id != null">
        id,
      </if>
      <if test="carNum != null">
        car_num,
      </if>
      <if test="brand != null">
        brand,
      </if>
      <if test="guidePrice != null">
        guide_price,
      </if>
      <if test="produceTime != null">
        produce_time,
      </if>
      <if test="carType != null">
        car_type,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="id != null">
        #{id,jdbcType=BIGINT},
      </if>
      <if test="carNum != null">
        #{carNum,jdbcType=VARCHAR},
      </if>
      <if test="brand != null">
        #{brand,jdbcType=VARCHAR},
      </if>
      <if test="guidePrice != null">
        #{guidePrice,jdbcType=DECIMAL},
      </if>
      <if test="produceTime != null">
        #{produceTime,jdbcType=CHAR},
      </if>
      <if test="carType != null">
        #{carType,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultType="java.lang.Long">
    select count(*) from t_car
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map">
    update t_car
    <set>
      <if test="row.id != null">
        id = #{row.id,jdbcType=BIGINT},
      </if>
      <if test="row.carNum != null">
        car_num = #{row.carNum,jdbcType=VARCHAR},
      </if>
      <if test="row.brand != null">
        brand = #{row.brand,jdbcType=VARCHAR},
      </if>
      <if test="row.guidePrice != null">
        guide_price = #{row.guidePrice,jdbcType=DECIMAL},
      </if>
      <if test="row.produceTime != null">
        produce_time = #{row.produceTime,jdbcType=CHAR},
      </if>
      <if test="row.carType != null">
        car_type = #{row.carType,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="example != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map">
    update t_car
    set id = #{row.id,jdbcType=BIGINT},
      car_num = #{row.carNum,jdbcType=VARCHAR},
      brand = #{row.brand,jdbcType=VARCHAR},
      guide_price = #{row.guidePrice,jdbcType=DECIMAL},
      produce_time = #{row.produceTime,jdbcType=CHAR},
      car_type = #{row.carType,jdbcType=VARCHAR}
    <if test="example != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.powernode.mybatis.pojo.Car">
    update t_car
    <set>
      <if test="carNum != null">
        car_num = #{carNum,jdbcType=VARCHAR},
      </if>
      <if test="brand != null">
        brand = #{brand,jdbcType=VARCHAR},
      </if>
      <if test="guidePrice != null">
        guide_price = #{guidePrice,jdbcType=DECIMAL},
      </if>
      <if test="produceTime != null">
        produce_time = #{produceTime,jdbcType=CHAR},
      </if>
      <if test="carType != null">
        car_type = #{carType,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=BIGINT}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.powernode.mybatis.pojo.Car">
    update t_car
    set car_num = #{carNum,jdbcType=VARCHAR},
      brand = #{brand,jdbcType=VARCHAR},
      guide_price = #{guidePrice,jdbcType=DECIMAL},
      produce_time = #{produceTime,jdbcType=CHAR},
      car_type = #{carType,jdbcType=VARCHAR}
    where id = #{id,jdbcType=BIGINT}
  </update>
</mapper>
<?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.powernode.mybatis.mappers.CarMapper">
  <resultMap id="BaseResultMap" type="com.powernode.mybatis.pojo.Car">
    <id column="id" jdbcType="BIGINT" property="id" />
    <result column="car_num" jdbcType="VARCHAR" property="carNum" />
    <result column="brand" jdbcType="VARCHAR" property="brand" />
    <result column="guide_price" jdbcType="DECIMAL" property="guidePrice" />
    <result column="produce_time" jdbcType="CHAR" property="produceTime" />
    <result column="car_type" jdbcType="VARCHAR" property="carType" />
  </resultMap>
  <sql id="Example_Where_Clause">
    <where>
      <foreach collection="oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <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 close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <select id="selectByPage" resultType="car">
    select * from t_car limit #{startIndex},#{pageSize}
  </select>
  <sql id="Update_By_Example_Where_Clause">
    <where>
      <foreach collection="example.oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <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 close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List">
    id, car_num, brand, guide_price, produce_time, car_type
  </sql>
  <select id="selectByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultMap="BaseResultMap">
    select
    <if test="distinct">
      distinct
    </if>
    <include refid="Base_Column_List" />
    from t_car
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from t_car
    where id = #{id,jdbcType=BIGINT}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
    delete from t_car
    where id = #{id,jdbcType=BIGINT}
  </delete>
  <delete id="deleteByExample" parameterType="com.powernode.mybatis.pojo.CarExample">
    delete from t_car
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.powernode.mybatis.pojo.Car">
    insert into t_car (id, car_num, brand, 
      guide_price, produce_time, car_type
      )
    values (#{id,jdbcType=BIGINT}, #{carNum,jdbcType=VARCHAR}, #{brand,jdbcType=VARCHAR}, 
      #{guidePrice,jdbcType=DECIMAL}, #{produceTime,jdbcType=CHAR}, #{carType,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.powernode.mybatis.pojo.Car">
    insert into t_car
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="id != null">
        id,
      </if>
      <if test="carNum != null">
        car_num,
      </if>
      <if test="brand != null">
        brand,
      </if>
      <if test="guidePrice != null">
        guide_price,
      </if>
      <if test="produceTime != null">
        produce_time,
      </if>
      <if test="carType != null">
        car_type,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="id != null">
        #{id,jdbcType=BIGINT},
      </if>
      <if test="carNum != null">
        #{carNum,jdbcType=VARCHAR},
      </if>
      <if test="brand != null">
        #{brand,jdbcType=VARCHAR},
      </if>
      <if test="guidePrice != null">
        #{guidePrice,jdbcType=DECIMAL},
      </if>
      <if test="produceTime != null">
        #{produceTime,jdbcType=CHAR},
      </if>
      <if test="carType != null">
        #{carType,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.powernode.mybatis.pojo.CarExample" resultType="java.lang.Long">
    select count(*) from t_car
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map">
    update t_car
    <set>
      <if test="row.id != null">
        id = #{row.id,jdbcType=BIGINT},
      </if>
      <if test="row.carNum != null">
        car_num = #{row.carNum,jdbcType=VARCHAR},
      </if>
      <if test="row.brand != null">
        brand = #{row.brand,jdbcType=VARCHAR},
      </if>
      <if test="row.guidePrice != null">
        guide_price = #{row.guidePrice,jdbcType=DECIMAL},
      </if>
      <if test="row.produceTime != null">
        produce_time = #{row.produceTime,jdbcType=CHAR},
      </if>
      <if test="row.carType != null">
        car_type = #{row.carType,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="example != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map">
    update t_car
    set id = #{row.id,jdbcType=BIGINT},
      car_num = #{row.carNum,jdbcType=VARCHAR},
      brand = #{row.brand,jdbcType=VARCHAR},
      guide_price = #{row.guidePrice,jdbcType=DECIMAL},
      produce_time = #{row.produceTime,jdbcType=CHAR},
      car_type = #{row.carType,jdbcType=VARCHAR}
    <if test="example != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.powernode.mybatis.pojo.Car">
    update t_car
    <set>
      <if test="carNum != null">
        car_num = #{carNum,jdbcType=VARCHAR},
      </if>
      <if test="brand != null">
        brand = #{brand,jdbcType=VARCHAR},
      </if>
      <if test="guidePrice != null">
        guide_price = #{guidePrice,jdbcType=DECIMAL},
      </if>
      <if test="produceTime != null">
        produce_time = #{produceTime,jdbcType=CHAR},
      </if>
      <if test="carType != null">
        car_type = #{carType,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=BIGINT}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.powernode.mybatis.pojo.Car">
    update t_car
    set car_num = #{carNum,jdbcType=VARCHAR},
      brand = #{brand,jdbcType=VARCHAR},
      guide_price = #{guidePrice,jdbcType=DECIMAL},
      produce_time = #{produceTime,jdbcType=CHAR},
      car_type = #{carType,jdbcType=VARCHAR}
    where id = #{id,jdbcType=BIGINT}
  </update>
</mapper>
package com.powernode.mybatis.mappers;

import com.powernode.mybatis.pojo.Car;
import com.powernode.mybatis.pojo.CarExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface CarMapper {
    long countByExample(CarExample example);

    int deleteByExample(CarExample example);

    int deleteByPrimaryKey(Long id);

    List<Car> selectByPage(@Param("startIndex") int startIndex,@Param("pageSize") int pageSize);

    int insert(Car row);

    int insertSelective(Car row);

    List<Car> selectByExample(CarExample example);

    Car selectByPrimaryKey(Long id);

    int updateByExampleSelective(@Param("row") Car row, @Param("example") CarExample example);

    int updateByExample(@Param("row") Car row, @Param("example") CarExample example);

    int updateByPrimaryKeySelective(Car row);

    int updateByPrimaryKey(Car row);
}

 

package com.powernode.mybatis.mappers;

import com.powernode.mybatis.pojo.Car;
import com.powernode.mybatis.pojo.CarExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface CarMapper {
    long countByExample(CarExample example);

    int deleteByExample(CarExample example);

    int deleteByPrimaryKey(Long id);

    List<Car> selectByPage(@Param("startIndex") int startIndex,@Param("pageSize") int pageSize);

    int insert(Car row);

    int insertSelective(Car row);

    List<Car> selectByExample(CarExample example);

    Car selectByPrimaryKey(Long id);

    int updateByExampleSelective(@Param("row") Car row, @Param("example") CarExample example);

    int updateByExample(@Param("row") Car row, @Param("example") CarExample example);

    int updateByPrimaryKeySelective(Car row);

    int updateByPrimaryKey(Car row);
}
package com.powernode.mybatis.Test;

import com.powernode.mybatis.mappers.CarMapper;
import com.powernode.mybatis.pojo.Car;
import com.powernode.mybatis.utils.SqlSessionUtils;
import org.apache.ibatis.session.SqlSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;

public class Test
{
    private static final Logger logger = LoggerFactory.getLogger(Test.class);
    @org.junit.Test
    public void selectByPage()
    {
        SqlSession sqlSession = SqlSessionUtils.openSession();
        CarMapper mapper = sqlSession.getMapper(CarMapper.class);
        int pageNum = 1;
        int pageSize = 3;
        int startIndex = (pageNum - 1) * pageSize;
        List<Car> cars =  mapper.selectByPage(startIndex,pageSize);
        cars.forEach(car -> logger.info(car.toString()));
    }
}

 

package com.powernode.mybatis.Test;

import com.powernode.mybatis.mappers.CarMapper;
import com.powernode.mybatis.pojo.Car;
import com.powernode.mybatis.utils.SqlSessionUtils;
import org.apache.ibatis.session.SqlSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;

public class Test
{
    private static final Logger logger = LoggerFactory.getLogger(Test.class);
    @org.junit.Test
    public void selectByPage()
    {
        SqlSession sqlSession = SqlSessionUtils.openSession();
        CarMapper mapper = sqlSession.getMapper(CarMapper.class);
        int pageNum = 1;
        int pageSize = 3;
        int startIndex = (pageNum - 1) * pageSize;
        List<Car> cars =  mapper.selectByPage(startIndex,pageSize);
        cars.forEach(car -> logger.info(car.toString()));
    }
}
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