package beans;

//买家类

public class Users {

     private int UserId;

     private  String name;

     private int age;

     private String sex;

     private String area;

     private String tel;

public int getUserId() {

return UserId;

}

public void setUserId(int userId) {

UserId = userId;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getSex() {

return sex;

}

public void setSex(String sex) {

this.sex = sex;

}

public String getArea() {

return area;

}

public void setArea(String area) {

this.area = area;

}

public String getTel() {

return tel;

}

public void setTel(String tel) {

this.tel = tel;

}

}

package beans;

//交易类

public class TradingInf {

    private int tradingId;  //交易ID

    private int tradingGoodsId; //交易商品ID

    private int tradingUserId; //交易买家ID

    private int tradingNumber; //交易数量

public int getTradingId() {

return tradingId;

}

public void setTradingId(int tradingId) {

this.tradingId = tradingId;

}

public int getTradingGoodsId() {

return tradingGoodsId;

}

public void setTradingGoodsId(int tradingGoodsId) {

this.tradingGoodsId = tradingGoodsId;

}

public int getTradingUserId() {

return tradingUserId;

}

public void setTradingUserId(int tradingUserId) {

this.tradingUserId = tradingUserId;

}

public int getTradingNumber() {

return tradingNumber;

}

public void setTradingNumber(int tradingNumber) {

this.tradingNumber = tradingNumber;

}

}

package beans;

//利润

public class Profit {

   private String goodsName;

   private int goodsId;

   private int costPrice;

   private int sellingPrice;

   private int tradingNum;

   private int times;

   private int porfit;

   public String getGoodsName() {

return goodsName;

}

public void setGoodsName(String goodsName) {

this.goodsName = goodsName;

}

public int getGoodsId() {

return goodsId;

}

public void setGoodsId(int goodsId) {

this.goodsId = goodsId;

}

public int getCostPrice() {

return costPrice;

}

public void setCostPrice(int costPrice) {

this.costPrice = costPrice;

}

public int getSellingPrice() {

return sellingPrice;

}

public void setSellingPrice(int sellingPrice) {

this.sellingPrice = sellingPrice;

}

public int getTradingNum() {

return tradingNum;

}

public void setTradingNum(int tradingNum) {

this.tradingNum = tradingNum;

}

public int getTimes() {

return times;

}

public void setTimes(int times) {

this.times = times;

}

public int getPorfit() {

return porfit;

}

public void setPorfit(int porfit) {

this.porfit = porfit;

}

}

https://pan.baidu.com/s/1geXjm1t

效果比较简易、昨天做完今天整理下上传了。