springboot 단일 파일 과 다 중 파일 업로드 실현

package com.heeexy.example.controller;

import com.alibaba.fastjson.JSONObject;
import com.heeexy.example.util.CommonUtil;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.util.*;

@RestController
@RequestMapping("/common")
public class UploadController {
 //       
 File uploadPath = null;

 //     
 @PostMapping("/upload")
 public JSONObject upload(@RequestParam(value = "file", required = false)MultipartFile file,HttpServletRequest request) throws Exception{
 //       json  
 JSONObject returnData = new JSONObject();
 //       
 BufferedOutputStream out = null;

 // request    JSONObject  
 JSONObject jsonObject = CommonUtil.request2Json(request);
 //      
 CommonUtil.hasAllRequired(jsonObject,"user_id,equi_id,upload_type");

 //      id
 String user_id = jsonObject.getString("user_id");
 //      id
 String equi_id = jsonObject.getString("equi_id");
 //          1:   2:  
 String upload_type = jsonObject.getString("upload_type");

 //               
 File uploadPath = null;
 String basePath = "/root/img";   //        
 String inspection = "/inspection";  //       
 String maintenance = "/maintenance";  //       

 switch (upload_type){
  case "1":
  uploadPath = new File(basePath+inspection);
  break;
  case "2":
  uploadPath = new File(basePath+maintenance);
  break;
  default:
  uploadPath = new File(basePath);
 }
 //              
 if(!uploadPath.exists()){
  uploadPath.mkdirs();
 }
 //           
 if (file!=null) {
  //        
  String houzhui = file.getOriginalFilename().split("\\.")[1];
  //          (    id+  id+   .   )
  File fil = new File(uploadPath+"/"+user_id+equi_id+new Date().getTime()+"."+houzhui);
  try {
  //                   
  out = new BufferedOutputStream(new FileOutputStream(fil));
  out.write(file.getBytes());
  out.flush();
  out.close();
  //            getAbsolutePath()           
  returnData.put("message",fil.getName());
  } catch (FileNotFoundException e) {
  e.printStackTrace();
  returnData.put("message", "      :" + e.getMessage());
  } catch (IOException e) {
  e.printStackTrace();
  returnData.put("message", "      :" + e.getMessage());
  }finally {
  //     
  if(out!=null){out.close();}
  }
 } else {
  returnData.put("message", "      ,    ");
 }
 return CommonUtil.successJson(returnData);
 }

 //     
 @PostMapping("/batchUpload")
 public JSONObject handleFileUpload(HttpServletRequest request) throws Exception{
 //       json  
 JSONObject returnData = new JSONObject();
 //       ,      
 BufferedOutputStream stream = null;
 //  map       
 Map<String,String> returnfileMap = new HashMap<String, String>();

 //           
 List<MultipartFile> files = ((MultipartHttpServletRequest) request).getFiles("file");
 MultipartFile file = null;

 // request    JSONObject  
 JSONObject jsonObject = CommonUtil.request2Json(request);
 //      ,  id,  id,      
 CommonUtil.hasAllRequired(jsonObject,"user_id,equi_id,upload_type");

 //      id
 String user_id = jsonObject.getString("user_id");
 //      id
 String equi_id = jsonObject.getString("equi_id");
 //          1:   2:  
 String upload_type = jsonObject.getString("upload_type");

 //               
 File uploadPath = null;
 String basePath = "/root/img"; //        
 String inspection = "/inspection"; //       
 String maintenance = "/maintenance"; //       

 switch (upload_type){
  case "1":
  uploadPath = new File(basePath+inspection);
  break;
  case "2":
  uploadPath = new File(basePath+maintenance);
  break;
  default:
  uploadPath = new File(basePath);
 }
 //              
 if(!uploadPath.exists()){
  uploadPath.mkdirs();
 }

 //           
 for (int i = 0; i < files.size(); ++i) {
  //       
  file = files.get(i);
  try {
   //        
   String houzhui = file.getOriginalFilename().split("\\.")[1];
   //               (    id+  id+   .   )
   File fil = new File(uploadPath+"/"+user_id+equi_id+new Date().getTime()+"."+houzhui);
   //                   
   byte[] bytes = file.getBytes();
   stream = new BufferedOutputStream(new FileOutputStream(fil));
   stream.write(bytes);
   stream.close();
   //         ,        key,         value  returnfileMap 
   switch (upload_type){
   case "1":
    returnfileMap.put(file.getOriginalFilename(),inspection+"/"+fil.getName());
    break;
   case "2":
    returnfileMap.put(file.getOriginalFilename(),maintenance+"/"+fil.getName());
    break;
   }
  } catch (Exception e) {
   stream = null;
   //           ,        key,value  "fail",  returnfileMap 
   returnfileMap.put(file.getOriginalFilename(),"fail");
  }finally {
   //     
   if(stream!=null){stream.close();}
  }
 }
 //  returnfileMap      
 returnData.put("message",returnfileMap);
 return CommonUtil.successJson(returnData);
 }
 }