SpringBoot之文件上传

 package org.springboot.controller;

 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.springboot.constant.Constant;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;

 import java.io.File;
 import java.io.IOException;

 /**
  * @Auther:GongXingRui
  * @Date:2018/12/25
  * @Description: 文件下载
  **/
 @Controller
 public class FileUpload {
     Logger logger = LogManager.getLogger(FileUpload.class);

     @GetMapping("/upload")
     public String upload() {
         return "upload";
     }

     @PostMapping("/upload")
     @ResponseBody
     public String upload(@RequestParam("file") MultipartFile file) {
         if (file.isEmpty()) {
             return "上传失败，请选择文件";
         }

         String fileName = file.getOriginalFilename();
 //        String filePath = "C:/Temp/upload";
         String filePath = Constant.CONFIG_PROPERTIES.getProperty("upload.path");
         File dest = new File(filePath + File.separator + fileName);
         //判断文件是否已经存在
         if (dest.exists()) {
             logger.info("文件已经存在 -> " + dest.getPath());
         }
         if (!dest.getParentFile().exists()) {
             dest.getParentFile().mkdirs();
             logger.info("目录不存在，自动创建 -> " + dest.getParentFile().getPath());
         }
         try {
             file.transferTo(dest);
             logger.info("上传成功");
             return "上传成功";
         } catch (IOException e) {
             logger.error(e.toString(), e);
         }
         return "上传失败！";
     }
 }