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步骤 2 : 模仿和排错 步骤 3 : 购物车页面操作 步骤 4 : 调整订单数量 步骤 5 : 删除订单项 步骤 6 : 提交到结算页面
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完整的SSM模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE，SSM一整套技术栈， 从无到有涵盖全部126个知识点，560个开发步骤, 充实SSM项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买
使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。 如果是误封 ，请联系站长，谢谢
增值内容，请先登录
完整的SSM模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE，SSM一整套技术栈， 从无到有涵盖全部126个知识点，560个开发步骤, 充实SSM项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买
使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。 如果是误封 ，请联系站长，谢谢
增值内容，请先登录
完整的SSM模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE，SSM一整套技术栈， 从无到有涵盖全部126个知识点，560个开发步骤, 充实SSM项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买
使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。 如果是误封 ，请联系站长，谢谢
增值内容，请先登录
完整的SSM模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE，SSM一整套技术栈， 从无到有涵盖全部126个知识点，560个开发步骤, 充实SSM项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买
使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。 如果是误封 ，请联系站长，谢谢
var page = "forechangeOrderItem";
$.post(
page,
{"pid":pid,"number":num},
function(result){
if("success"!=result){
location.href="loginPage";
}
}
);
@RequestMapping("forechangeOrderItem")
@ResponseBody
public String changeOrderItem( Model model,HttpSession session, int pid, int number) {
User user =(User) session.getAttribute("user");
if(null==user)
return "fail";
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==pid){
oi.setNumber(number);
orderItemService.update(oi);
break;
}
}
return "success";
}
}
package com.how2java.tmall.controller;
import com.github.pagehelper.PageHelper;
import com.how2java.tmall.pojo.*;
import com.how2java.tmall.service.*;
import comparator.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.util.HtmlUtils;
import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
@Controller
@RequestMapping("")
public class ForeController {
@Autowired
CategoryService categoryService;
@Autowired
ProductService productService;
@Autowired
UserService userService;
@Autowired
ProductImageService productImageService;
@Autowired
PropertyValueService propertyValueService;
@Autowired
OrderService orderService;
@Autowired
OrderItemService orderItemService;
@Autowired
ReviewService reviewService;
@RequestMapping("forehome")
public String home(Model model) {
List<Category> cs= categoryService.list();
productService.fill(cs);
productService.fillByRow(cs);
model.addAttribute("cs", cs);
return "fore/home";
}
@RequestMapping("foreregister")
public String register(Model model,User user) {
String name = user.getName();
name = HtmlUtils.htmlEscape(name);
user.setName(name);
boolean exist = userService.isExist(name);
if(exist){
String m ="用户名已经被使用,不能使用";
model.addAttribute("msg", m);
return "fore/register";
}
userService.add(user);
return "redirect:registerSuccessPage";
}
@RequestMapping("forelogin")
public String login(@RequestParam("name") String name, @RequestParam("password") String password, Model model, HttpSession session) {
name = HtmlUtils.htmlEscape(name);
User user = userService.get(name,password);
if(null==user){
model.addAttribute("msg", "账号密码错误");
return "fore/login";
}
session.setAttribute("user", user);
return "redirect:forehome";
}
@RequestMapping("forelogout")
public String logout( HttpSession session) {
session.removeAttribute("user");
return "redirect:forehome";
}
@RequestMapping("foreproduct")
public String product( int pid, Model model) {
Product p = productService.get(pid);
List<ProductImage> productSingleImages = productImageService.list(p.getId(), ProductImageService.type_single);
List<ProductImage> productDetailImages = productImageService.list(p.getId(), ProductImageService.type_detail);
p.setProductSingleImages(productSingleImages);
p.setProductDetailImages(productDetailImages);
List<PropertyValue> pvs = propertyValueService.list(p.getId());
List<Review> reviews = reviewService.list(p.getId());
productService.setSaleAndReviewNumber(p);
model.addAttribute("reviews", reviews);
model.addAttribute("p", p);
model.addAttribute("pvs", pvs);
return "fore/product";
}
@RequestMapping("forecheckLogin")
@ResponseBody
public String checkLogin( HttpSession session) {
User user =(User) session.getAttribute("user");
if(null!=user)
return "success";
return "fail";
}
@RequestMapping("foreloginAjax")
@ResponseBody
public String loginAjax(@RequestParam("name") String name, @RequestParam("password") String password,HttpSession session) {
name = HtmlUtils.htmlEscape(name);
User user = userService.get(name,password);
if(null==user){
return "fail";
}
session.setAttribute("user", user);
return "success";
}
@RequestMapping("forecategory")
public String category(int cid,String sort, Model model) {
Category c = categoryService.get(cid);
productService.fill(c);
productService.setSaleAndReviewNumber(c.getProducts());
if(null!=sort){
switch(sort){
case "review":
Collections.sort(c.getProducts(),new ProductReviewComparator());
break;
case "date" :
Collections.sort(c.getProducts(),new ProductDateComparator());
break;
case "saleCount" :
Collections.sort(c.getProducts(),new ProductSaleCountComparator());
break;
case "price":
Collections.sort(c.getProducts(),new ProductPriceComparator());
break;
case "all":
Collections.sort(c.getProducts(),new ProductAllComparator());
break;
}
}
model.addAttribute("c", c);
return "fore/category";
}
@RequestMapping("foresearch")
public String search( String keyword,Model model){
PageHelper.offsetPage(0,20);
List<Product> ps= productService.search(keyword);
productService.setSaleAndReviewNumber(ps);
model.addAttribute("ps",ps);
return "fore/searchResult";
}
@RequestMapping("forebuyone")
public String buyone(int pid, int num, HttpSession session) {
Product p = productService.get(pid);
int oiid = 0;
User user =(User) session.getAttribute("user");
boolean found = false;
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==p.getId().intValue()){
oi.setNumber(oi.getNumber()+num);
orderItemService.update(oi);
found = true;
oiid = oi.getId();
break;
}
}
if(!found){
OrderItem oi = new OrderItem();
oi.setUid(user.getId());
oi.setNumber(num);
oi.setPid(pid);
orderItemService.add(oi);
oiid = oi.getId();
}
return "redirect:forebuy?oiid="+oiid;
}
@RequestMapping("forebuy")
public String buy( Model model,String[] oiid,HttpSession session){
List<OrderItem> ois = new ArrayList<>();
float total = 0;
for (String strid : oiid) {
int id = Integer.parseInt(strid);
OrderItem oi= orderItemService.get(id);
total +=oi.getProduct().getPromotePrice()*oi.getNumber();
ois.add(oi);
}
session.setAttribute("ois", ois);
model.addAttribute("total", total);
return "fore/buy";
}
@RequestMapping("foreaddCart")
@ResponseBody
public String addCart(int pid, int num, Model model,HttpSession session) {
Product p = productService.get(pid);
User user =(User) session.getAttribute("user");
boolean found = false;
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==p.getId().intValue()){
oi.setNumber(oi.getNumber()+num);
orderItemService.update(oi);
found = true;
break;
}
}
if(!found){
OrderItem oi = new OrderItem();
oi.setUid(user.getId());
oi.setNumber(num);
oi.setPid(pid);
orderItemService.add(oi);
}
return "success";
}
@RequestMapping("forecart")
public String cart( Model model,HttpSession session) {
User user =(User) session.getAttribute("user");
List<OrderItem> ois = orderItemService.listByUser(user.getId());
model.addAttribute("ois", ois);
return "fore/cart";
}
@RequestMapping("forechangeOrderItem")
@ResponseBody
public String changeOrderItem( Model model,HttpSession session, int pid, int number) {
User user =(User) session.getAttribute("user");
if(null==user)
return "fail";
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==pid){
oi.setNumber(number);
orderItemService.update(oi);
break;
}
}
return "success";
}
}
增值内容，请先登录
完整的SSM模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE，SSM一整套技术栈， 从无到有涵盖全部126个知识点，560个开发步骤, 充实SSM项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买
使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。 如果是误封 ，请联系站长，谢谢
var page="foredeleteOrderItem";
$.post(
page,
{"oiid":deleteOrderItemid},
function(result){
if("success"==result){
$("tr.cartProductItemTR[oiid="+deleteOrderItemid+"]").hide();
}
else{
location.href="loginPage";
}
}
);
@RequestMapping("foredeleteOrderItem")
@ResponseBody
public String deleteOrderItem( Model model,HttpSession session,int oiid){
User user =(User) session.getAttribute("user");
if(null==user)
return "fail";
orderItemService.delete(oiid);
return "success";
}
}
package com.how2java.tmall.controller;
import com.github.pagehelper.PageHelper;
import com.how2java.tmall.pojo.*;
import com.how2java.tmall.service.*;
import comparator.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.util.HtmlUtils;
import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
@Controller
@RequestMapping("")
public class ForeController {
@Autowired
CategoryService categoryService;
@Autowired
ProductService productService;
@Autowired
UserService userService;
@Autowired
ProductImageService productImageService;
@Autowired
PropertyValueService propertyValueService;
@Autowired
OrderService orderService;
@Autowired
OrderItemService orderItemService;
@Autowired
ReviewService reviewService;
@RequestMapping("forehome")
public String home(Model model) {
List<Category> cs= categoryService.list();
productService.fill(cs);
productService.fillByRow(cs);
model.addAttribute("cs", cs);
return "fore/home";
}
@RequestMapping("foreregister")
public String register(Model model,User user) {
String name = user.getName();
name = HtmlUtils.htmlEscape(name);
user.setName(name);
boolean exist = userService.isExist(name);
if(exist){
String m ="用户名已经被使用,不能使用";
model.addAttribute("msg", m);
return "fore/register";
}
userService.add(user);
return "redirect:registerSuccessPage";
}
@RequestMapping("forelogin")
public String login(@RequestParam("name") String name, @RequestParam("password") String password, Model model, HttpSession session) {
name = HtmlUtils.htmlEscape(name);
User user = userService.get(name,password);
if(null==user){
model.addAttribute("msg", "账号密码错误");
return "fore/login";
}
session.setAttribute("user", user);
return "redirect:forehome";
}
@RequestMapping("forelogout")
public String logout( HttpSession session) {
session.removeAttribute("user");
return "redirect:forehome";
}
@RequestMapping("foreproduct")
public String product( int pid, Model model) {
Product p = productService.get(pid);
List<ProductImage> productSingleImages = productImageService.list(p.getId(), ProductImageService.type_single);
List<ProductImage> productDetailImages = productImageService.list(p.getId(), ProductImageService.type_detail);
p.setProductSingleImages(productSingleImages);
p.setProductDetailImages(productDetailImages);
List<PropertyValue> pvs = propertyValueService.list(p.getId());
List<Review> reviews = reviewService.list(p.getId());
productService.setSaleAndReviewNumber(p);
model.addAttribute("reviews", reviews);
model.addAttribute("p", p);
model.addAttribute("pvs", pvs);
return "fore/product";
}
@RequestMapping("forecheckLogin")
@ResponseBody
public String checkLogin( HttpSession session) {
User user =(User) session.getAttribute("user");
if(null!=user)
return "success";
return "fail";
}
@RequestMapping("foreloginAjax")
@ResponseBody
public String loginAjax(@RequestParam("name") String name, @RequestParam("password") String password,HttpSession session) {
name = HtmlUtils.htmlEscape(name);
User user = userService.get(name,password);
if(null==user){
return "fail";
}
session.setAttribute("user", user);
return "success";
}
@RequestMapping("forecategory")
public String category(int cid,String sort, Model model) {
Category c = categoryService.get(cid);
productService.fill(c);
productService.setSaleAndReviewNumber(c.getProducts());
if(null!=sort){
switch(sort){
case "review":
Collections.sort(c.getProducts(),new ProductReviewComparator());
break;
case "date" :
Collections.sort(c.getProducts(),new ProductDateComparator());
break;
case "saleCount" :
Collections.sort(c.getProducts(),new ProductSaleCountComparator());
break;
case "price":
Collections.sort(c.getProducts(),new ProductPriceComparator());
break;
case "all":
Collections.sort(c.getProducts(),new ProductAllComparator());
break;
}
}
model.addAttribute("c", c);
return "fore/category";
}
@RequestMapping("foresearch")
public String search( String keyword,Model model){
PageHelper.offsetPage(0,20);
List<Product> ps= productService.search(keyword);
productService.setSaleAndReviewNumber(ps);
model.addAttribute("ps",ps);
return "fore/searchResult";
}
@RequestMapping("forebuyone")
public String buyone(int pid, int num, HttpSession session) {
Product p = productService.get(pid);
int oiid = 0;
User user =(User) session.getAttribute("user");
boolean found = false;
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==p.getId().intValue()){
oi.setNumber(oi.getNumber()+num);
orderItemService.update(oi);
found = true;
oiid = oi.getId();
break;
}
}
if(!found){
OrderItem oi = new OrderItem();
oi.setUid(user.getId());
oi.setNumber(num);
oi.setPid(pid);
orderItemService.add(oi);
oiid = oi.getId();
}
return "redirect:forebuy?oiid="+oiid;
}
@RequestMapping("forebuy")
public String buy( Model model,String[] oiid,HttpSession session){
List<OrderItem> ois = new ArrayList<>();
float total = 0;
for (String strid : oiid) {
int id = Integer.parseInt(strid);
OrderItem oi= orderItemService.get(id);
total +=oi.getProduct().getPromotePrice()*oi.getNumber();
ois.add(oi);
}
session.setAttribute("ois", ois);
model.addAttribute("total", total);
return "fore/buy";
}
@RequestMapping("foreaddCart")
@ResponseBody
public String addCart(int pid, int num, Model model,HttpSession session) {
Product p = productService.get(pid);
User user =(User) session.getAttribute("user");
boolean found = false;
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==p.getId().intValue()){
oi.setNumber(oi.getNumber()+num);
orderItemService.update(oi);
found = true;
break;
}
}
if(!found){
OrderItem oi = new OrderItem();
oi.setUid(user.getId());
oi.setNumber(num);
oi.setPid(pid);
orderItemService.add(oi);
}
return "success";
}
@RequestMapping("forecart")
public String cart( Model model,HttpSession session) {
User user =(User) session.getAttribute("user");
List<OrderItem> ois = orderItemService.listByUser(user.getId());
model.addAttribute("ois", ois);
return "fore/cart";
}
@RequestMapping("forechangeOrderItem")
@ResponseBody
public String changeOrderItem( Model model,HttpSession session, int pid, int number) {
User user =(User) session.getAttribute("user");
if(null==user)
return "fail";
List<OrderItem> ois = orderItemService.listByUser(user.getId());
for (OrderItem oi : ois) {
if(oi.getProduct().getId().intValue()==pid){
oi.setNumber(number);
orderItemService.update(oi);
break;
}
}
return "success";
}
@RequestMapping("foredeleteOrderItem")
@ResponseBody
public String deleteOrderItem( Model model,HttpSession session,int oiid){
User user =(User) session.getAttribute("user");
if(null==user)
return "fail";
orderItemService.delete(oiid);
return "success";
}
}
增值内容，请先登录
完整的SSM模仿天猫项目，使用J2SE、前端技术(包含所有前端jsp文件)、J2EE，SSM一整套技术栈， 从无到有涵盖全部126个知识点，560个开发步骤, 充实SSM项目经验，为简历加上一个有吸引力的砝码.
增值内容，点击购买
使用爬虫已经被系统记录，请勿使用爬虫，增大封号风险。 如果是误封 ，请联系站长，谢谢
HOW2J公众号，关注后实时获知最新的教程和优惠活动，谢谢。
问答区域
2021-08-02
调整数量的时候 不断的异步请求 改变num 和数据库交互是不是有点浪费资源，点结算的时候统一提交 会不会好一点
2 个答案
lwb5070074 跳转到问题位置 答案时间：2022-04-19 应该不会丢失信息吧，选好了再最终一起提交不好吗？
how2j 跳转到问题位置 答案时间：2021-08-21 结算才提交，那么中途调整的信息就丢失了呀
回答已经提交成功，正在审核。 请于 我的回答 处查看回答记录，谢谢
2021-03-17
oiid是啥
2020-08-31
有个严重的安全问题！！
2019-10-08
一个小问题
2019-06-03
不是进入购物车之前必须要登陆吗，怎么修改数量之前还要判断是否已登录
提问太多，页面渲染太慢，为了加快渲染速度，本页最多只显示几条提问。还有 6 条以前的提问，请 点击查看
提问之前请登陆
提问已经提交成功，正在审核。 请于 我的提问 处查看提问记录，谢谢
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