java图片（头像）上传Demo

package com.jsfp.controller; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import java.util.UUID; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.commons.fileupload.util.Streams; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; 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.jsfp.model.User; import com.jsfp.service.UserService; import com.jsfp.test.ResponseDataWrapper; @Controller @RequestMapping("/user") public class UserController { @Autowired private UserService userService; /** * 添加用户信息 * @param name * @param birthday * @param gender * @param email * @param img * @return */ @RequestMapping("/insert") public String insert(@RequestParam(value = "name") String name, @RequestParam(value = "birthday") String birthday, @RequestParam(value = "gender") String gender, @RequestParam(value = "email") String email, @RequestParam(value = "img") MultipartFile img) { if (!img.isEmpty()) { // 使用StreamsAPI方式拷贝文件 try { //获取图片名称 String imgName=img.getOriginalFilename(); //截取图片的格式 String str=imgName.substring(imgName.indexOf("."),imgName.length()); //获取UUID String id = UUID.randomUUID().toString(); String image=id+str; Streams.copy(img.getInputStream(), new FileOutputStream( "D:/img/" + image), true); User user = new User(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date date = null; try { date = sdf.parse(birthday); } catch (ParseException e) { e.printStackTrace(); } user.setBirthday(date); user.setEmail(email); user.setGender(gender); user.setImg("D:/img/" + image); user.setName(name); boolean con = userService.insertUser(user); if (con) { return "redirect:/user/getAll"; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return "redirect:/user/getAll"; } /** * 查询全部用户信息 * @param session * @return */ @RequestMapping("/getAll") public String getAll(HttpSession session) { List<User> list = userService.getAllUser(); session.setAttribute("list", list); return "users/getAll"; } /** * 根据id查询用户信息 * @param id * @param session * @return */ @RequestMapping("/getUserById") public String getUserById(@RequestParam(value = "id") int id,HttpSession session) { User user = userService.getUserById(id); session.setAttribute("user", user); return "users/getUserById"; } /** * 删除用户信息 * @param id * @return */ @RequestMapping("/deleteUser") public String deleteUser(@RequestParam(value = "id") int id){ boolean con=userService.deleteUser(id); return "redirect:/user/getAll"; } /** * 修改头像(假修改) * @param img * @return */ @RequestMapping("/update") @ResponseBody public ResponseDataWrapper update(@RequestParam(value = "img") MultipartFile img){ ResponseDataWrapper rdw=new ResponseDataWrapper(); if (!img.isEmpty()) { // 使用StreamsAPI方式拷贝文件 try { //获取图片名称 String imgName=img.getOriginalFilename(); //截取图片的格式 String str=imgName.substring(imgName.indexOf("."),imgName.length()); //获取UUID String id = UUID.randomUUID().toString(); String image=id+str; Streams.copy(img.getInputStream(), new FileOutputStream( "D:/img/" + image), true); User user = new User(); user.setImg("D:/img/" + image); rdw.setObj(user); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return rdw; } /** * 修改用户头像(真修改) * @param img * @param id * @return */ @RequestMapping("/updateUser") @ResponseBody public ResponseDataWrapper updateUser(@RequestParam(value = "img")String img, @RequestParam(value = "id")int id){ ResponseDataWrapper rdw=new ResponseDataWrapper(); User user=new User(); user.setId(id); user.setImg(img); boolean con=userService.updateUser(user); if (con) { rdw.setCode(1); rdw.setRandom(id); } else { rdw.setCode(0); } return rdw; } /** * 修改用户头像获取头像信息 * @param id * @param response * @return */ @RequestMapping("/getImgs") public String getImgs(@RequestParam(value = "img") String img,HttpServletResponse response){ InputStream is = null; OutputStream os = null; BufferedInputStream bis = null; BufferedOutputStream bos = null; try { is=new FileInputStream(img); bis=new BufferedInputStream(is); os=response.getOutputStream(); bos=new BufferedOutputStream(os); int bytesRead = 0; byte[] buffer = new byte[8192]; // 开始向网络传输文件流 while ((bytesRead = bis.read(buffer, 0, 8192)) != -1) { bos.write(buffer, 0, bytesRead); } bos.flush();// 这里一定要调用flush()方法 } catch (IOException e) { e.printStackTrace(); }finally { try { is.close(); } catch (IOException e) { e.printStackTrace(); } try { bis.close(); } catch (IOException e) { e.printStackTrace(); } try { os.close(); } catch (IOException e) { e.printStackTrace(); } try { bos.close(); } catch (IOException e) { e.printStackTrace(); } } return null; } /** * 用户详细信息页面获取头像信息 * @param id * @param response * @return */ @RequestMapping("/getImg") public String getImg(@RequestParam(value = "id") int id,HttpServletResponse response){ User user = userService.getUserById(id); InputStream is = null; OutputStream os = null; BufferedInputStream bis = null; BufferedOutputStream bos = null; try { is=new FileInputStream(user.getImg()); bis=new BufferedInputStream(is); os=response.getOutputStream(); bos=new BufferedOutputStream(os); int bytesRead = 0; byte[] buffer = new byte[8192]; // 开始向网络传输文件流 while ((bytesRead = bis.read(buffer, 0, 8192)) != -1) { bos.write(buffer, 0, bytesRead); } bos.flush();// 这里一定要调用flush()方法 } catch (IOException e) { e.printStackTrace(); }finally { try { is.close(); } catch (IOException e) { e.printStackTrace(); } try { bis.close(); } catch (IOException e) { e.printStackTrace(); } try { os.close(); } catch (IOException e) { e.printStackTrace(); } try { bos.close(); } catch (IOException e) { e.printStackTrace(); } } return null; } }