package com.sjsq.controller;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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.multipart.MultipartFile;
import com.sjsq.service.ItemsService;
import com.sjsq.entity.Items;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
/**
*@class_name:ItemsController
*@param: 6.controller控制层
*@return: 实现业务逻辑控制
*@author:sjsq
*@createtime:2022年2月22日
*/
@Controller
@RequestMapping("/items")
public class ItemsController {
@Autowired
private ItemsService itemsService;
//分页查询数据
@RequestMapping("/queryItems")
public String queryItems(@RequestParam(value="pn",defaultValue="1")Integer pn,Model model){
//1.引入分页插件,pn是第几页,5是每页显示多少行
PageHelper.startPage(pn,5);
//2.紧跟的查询就是一个分页查询
List<Items>list =itemsService.findAll();
//3.使用PageInfo包装查询后的结果,5是连续显示的条数
PageInfo<Items> pageInfo =new PageInfo<Items>(list,5);
//4.使用model设置到前端
model.addAttribute("pageInfo",pageInfo);
model.addAttribute("test","呵呵");
//5.最后设置返回的jsp
return "showItems";
}
//分页查询数据
@RequestMapping("/querySomeItems")
public String querySomeItems(@RequestParam(value="pn",defaultValue="1")Integer pn,@RequestParam(value = "commodityname",required = false) String commodityname, Model model){
//1.引入分页插件,pn是第几页,5是每页显示多少行
PageHelper.startPage(pn,5);
System.out.println(commodityname);
//2.紧跟的查询就是一个分页查询
List<Items>list =itemsService.findSome(commodityname);
//3.使用PageInfo包装查询后的结果,5是连续显示的条数
PageInfo<Items> pageInfo =new PageInfo<Items>(list,5);
//4.使用model设置到前端
model.addAttribute("pageInfo",pageInfo);
//5.最后设置返回的jsp
return "showItems";
}
// 添加商品
@RequestMapping("/addItems")
public String addItems(Items items,MultipartFile items_pic,HttpServletRequest request,HttpServletResponse response) throws IllegalStateException, IOException{
//设置图片上传的路径
String path =request.getServletContext().getRealPath("/upload");
System.out.println("上传路径是:" + path);
// 获取图片文件名
String pic_name = items_pic.getOriginalFilename();
System.out.println("原文件名是:" + pic_name);
// 为了防止上传同名图片导致覆盖文件,引入随机数UUID解决。
String newname = UUID.randomUUID().toString() + pic_name.substring(pic_name.lastIndexOf("."));
System.out.println("新文件名是:" + newname);
// 创建文件流对象picfile
File picFile = new File(path, newname);
System.out.println("文件流为:" + picFile);
// 如果不存在则创建
if (!picFile.exists()) {
picFile.mkdirs();
}
items_pic.transferTo(picFile);
items.setPic(newname);
// 添加进去
itemsService.add(items);
// 内部转发
return "redirect:queryItems.action";
}
//删除商品
@RequestMapping("/del")
public String del(int id){
itemsService.del(id);
return "redirect:queryItems.action";
}
//查询单条记录
@RequestMapping("/findOne")
public String findOne(Model model,int id){
Items items = itemsService.findOne(id);
model.addAttribute("items", items);
//返给更新的方法
return "upd";
}
//修改数据
@RequestMapping("/upd")
public String upd(Items items,MultipartFile items_pic1,HttpServletRequest request) throws IllegalStateException, IOException{
//拿到单条数据
items.setPic(itemsService.findOne(items.getId()).getPic());
// 拿到该条数据的图片路径和名字
String path = request.getServletContext().getRealPath("/upload");
String pic_name = items_pic1.getOriginalFilename();
//修改以后做新判断
if (items_pic1 != null && pic_name != null && pic_name.length() > 0) {
String newname = UUID.randomUUID().toString() + pic_name.substring(pic_name.lastIndexOf("."));
File picFile = new File(path, newname);
//文件夹不存在就创建
if (!picFile.exists()) {
picFile.mkdirs();
}
items_pic1.transferTo(picFile);
items.setPic(newname);
}
//修改完成以后调用更新方法
itemsService.upd(items);
return "redirect:queryItems.action";
}
}
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温馨提示
Java+SSM+Bootstrap+Jsp+Mysql实现Web商品信息管理系统,sql在sql文件夹下面。系统功能包含,注册登录系统,管理员对商品信息的增删改查。系统经多次测试,运行无误,请大家放心下载!
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