案例代码：本地下载

数据库脚本：本地下载

1.创建实体类

Goods.java

package com.bean;

public class Goods {
    private Integer goodsId;
    private String goodsName;
    private Double goodsPrice;
    private Integer goodsNum;
    private Integer goodsType;

    public Goods() {
    }

    public Goods(Integer goodsId, String goodsName, Double goodsPrice,
                 Integer goodsNum, Integer goodsType) {
        super();
        this.goodsId = goodsId;
        this.goodsName = goodsName;
        this.goodsPrice = goodsPrice;
        this.goodsNum = goodsNum;
        this.goodsType = goodsType;
    }

    public Integer getGoodsId() {
        return goodsId;
    }

    public void setGoodsId(Integer goodsId) {
        this.goodsId = goodsId;
    }

    public String getGoodsName() {
        return goodsName;
    }

    public void setGoodsName(String goodsName) {
        this.goodsName = goodsName;
    }

    public Double getGoodsPrice() {
        return goodsPrice;
    }

    public void setGoodsPrice(Double goodsPrice) {
        this.goodsPrice = goodsPrice;
    }

    public Integer getGoodsNum() {
        return goodsNum;
    }

    public void setGoodsNum(Integer goodsNum) {
        this.goodsNum = goodsNum;
    }

    public Integer getGoodsType() {
        return goodsType;
    }

    public void setGoodsType(Integer goodsType) {
        this.goodsType = goodsType;
    }

    @Override
    public String toString() {
        return "Goods [goodsId=" + goodsId + ", goodsName=" + goodsName
                + ", goodsPrice=" + goodsPrice + ", goodsNum=" + goodsNum
                + ", goodsType=" + goodsType + "]";
    }

}

2.对应的xml文件

重点修改处

Goods.xml

<?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.bean.Goods">
<select id="findAll" resultMap="resultGoods">
select * from goods
</select>
<resultMap type="com.bean.Goods" id="resultGoods">
<id property="goodsId" column="goods_id" javaType="int" />
<result property="goodsName" column="goods_name" javaType="java.lang.String" />
<result property="goodsPrice" column="goods_price" javaType="java.lang.Double" />
<result property="goodsNum" column="goods_num" javaType="int" />
<result property="goodsType" column="goods_type" javaType="int" />
</resultMap>
</mapper>

3.在mybatis.xml注册Goods.xml

mybatis.xml

<mapper resource="com/bean/Goods.xml" />

4.测试运行