<dependency>
      <groupId>org.csource</groupId>
      <artifactId>fastdfs-client-java</artifactId>
      <version>1.27-SNAPSHOT</version>
    </dependency>

package panda.data.Utils;

import org.csource.common.MyException;
import org.csource.fastdfs.*;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.stream.Stream;

/**
 * @Auther: 羅羅
 * @Description:
 */
public class FastDFSClient {
  private static org.slf4j.Logger logger = LoggerFactory.getLogger(FastDFSClient.class);

  public static String uploadImage(MultipartFile multipartFile) throws IOException, MyException {
    // 1、初始化全局配置。加載一個(gè)配置文件。
    String filePath = new ClassPathResource("fdfs_client.conf").getFile().getAbsolutePath();
    ClientGlobal.init(filePath);

    // 2、創(chuàng)建一個(gè)TrackerClient對(duì)象。
    TrackerClient trackerClient = new TrackerClient();
    // 3、創(chuàng)建一個(gè)TrackerServer對(duì)象。
    TrackerServer trackerServer = trackerClient.getConnection();
    // 4、聲明一個(gè)StorageServer對(duì)象，null。
    StorageServer storageServer = null;
    // 5、獲得StorageClient對(duì)象。
    StorageClient storageClient = new StorageClient(trackerServer, storageServer);
    byte[] bytes = multipartFile.getBytes();// 獲得上傳的二進(jìn)制對(duì)象
    String[] strings = storageClient.upload_file(bytes, "jpg", null);
    Stream.of(strings).forEach(System.out::println);
    String imagurl = "http://47.98.159.35/"+strings[0]+"/"+strings[1];
    //返回值0代表刪除成功
    //int result = storageClient.delete_file("group1", "M00/00/00/wKgAaFyM3fSANCgXAABMnNm0e54098.jpg");
    //System.out.println("result="+result);
    return imagurl;
  }
}

package panda.data.controller;

import org.csource.common.MyException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import panda.data.ResultData.ImgAttr;
import panda.data.ResultData.ResultData;
import panda.data.Utils.FastDFSClient;

import java.io.IOException;
import java.util.ArrayList;

@Controller
public class ImgController {

  @Autowired
  private ResultData resultData;
  //必須是post方式
  @PostMapping("/fileUpload")
  @ResponseBody
  public ResultData fileUpload(@RequestParam("file") MultipartFile multipartFile) throws IOException, MyException {
    String url = FastDFSClient.uploadImage(multipartFile);
    if (url.contains("group")){
      resultData.setCode(0);
      ImgAttr imgAttr = new ImgAttr(url);
      ArrayList<Object> list = new ArrayList<>();
      list.add(imgAttr);
      resultData.setData(list);
    }else {
      resultData.setCode(0);
      resultData.setData(null);
    }
    return resultData;
  }
}