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！";
    }
}