SSM用户信息上传图片

package com.zhiyou100.controller; import java.io.File; import java.io.IOException; import java.util.Collection; import java.util.Date; import javax.servlet.http.HttpServletRequest; 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.multipart.MultipartFile; import com.zhiyou100.model.User; import com.zhiyou100.service.UserService; @Controller public class UserController { @Autowired private UserService service; @RequestMapping("/update") public String update(Long id,MultipartFile image,HttpServletRequest request) { // 上传的图片不会使用原始的名字，需要重新命名一个唯一的名字 // 防止多个用户上传名字相同内容不同的图片，导致覆盖，只保存了一张的情况 // 名字： 时间戳，内容dm5 后的字符串，UUID String imageName = String.valueOf(new Date().getTime()); String path = request.getServletContext().getRealPath("/")+ "view/upload/" + imageName; File file = new File(path); System.out.println("id = "+ id); try { image.transferTo(file); User user = new User(); user.setId(id); user.setImage(imageName); service.update(user); } catch (IllegalStateException | IOException e) { e.printStackTrace(); } return "redirect:/list"; } @RequestMapping("/list") public String listUsers(Model model) { Collection<User> list = service.listUser(); model.addAttribute("list", list); return "list"; } public void setService(UserService service){ this.service = service; } @RequestMapping("/delete") public String delete(Long ...ids) { service.deleteByPrimaryKey(ids); return "redirect:/list"; } }