本篇介紹FastDFS，無需整合spring即可使用，前端上傳圖片到控制層，控制層呼叫fastDFS工具類實現上傳，上傳成功返回檔案地址到前端。

• 配置檔案為fast_client.conf，fastDFS要求使用的檔名和屬性名，要一致。

  tracker_server = 120.78.191.143:22122

• fastdfs相關連線資訊

  IMG_SERVER_IP=http://192.168.1.*/
  FASTDFS_CLIENT_FILE=resource/fdfs_client.conf

• 控制層程式碼如下

  package com.tdrip.controller;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpSession;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestPart;
  import org.springframework.web.bind.annotation.RestController;
  import org.springframework.web.multipart.MultipartFile;
  
  import com.tdrip.model.db.OperatorModel;
  import com.tdrip.util.FastDFSClient;
  
  @RestController
  public class ImgUploadController {
  	
  	@Autowired
  	private HttpSession session;
  	@Value("${IMG_SERVER_IP}")
  	private String IMG_SERVER_IP;
  	@Value("${FASTDFS_CLIENT_FILE}")
  	private String FASTDFS_CLIENT_FILE;
  	
  	@RequestMapping("/imgupload")
  	public String imgUpload(HttpServletRequest request,@RequestPart(required = false, value = "file") MultipartFile file) {
  		OperatorModel model = (OperatorModel) session.getAttribute("admin");
  		if (null == model) {
  			return "";
  		}
  		StringBuffer picUrl = new StringBuffer(IMG_SERVER_IP);
  		try {
  			//獲得原始檔名
  			String oldName = file.getOriginalFilename();
  			//獲得副檔名
  			String extName = oldName.substring(oldName.lastIndexOf(".")+ 1);
  			//配置檔案，指定tracker_server的IP地址
  			String conf = "classpath:" + FASTDFS_CLIENT_FILE;
  			//建立FastDFS物件
  			FastDFSClient fastDFSClient = new FastDFSClient(conf);
  			//檔案路徑
  			picUrl.append(fastDFSClient.uploadFile(file.getBytes(), extName));
  			
  		} catch (Exception e) {
  			e.printStackTrace();
  		}
  		//返回檔案路徑
  		return picUrl.toString();
  	}
  }
   
  

  
  
• FastDFS工具類

  package com.tdrip.util;
  
  import org.csource.common.NameValuePair;
  import org.csource.fastdfs.ClientGlobal;
  import org.csource.fastdfs.StorageClient1;
  import org.csource.fastdfs.StorageServer;
  import org.csource.fastdfs.TrackerClient;
  import org.csource.fastdfs.TrackerServer;
  
  public class FastDFSClient {
  
  	private TrackerClient trackerClient = null;
  	private TrackerServer trackerServer = null;
  	private StorageServer storageServer = null;
  	private StorageClient1 storageClient = null;
  	
  	/**
  	 * conf為配置檔案的路徑，配置檔案為fastdfs伺服器的ip地址和埠
  	 * @param conf
  	 * @throws Exception
  	 */
  	public FastDFSClient(String conf) throws Exception {
  		if (conf.contains("classpath:")) {
  			conf = conf.replace("classpath:", this.getClass().getResource("/").getPath());
  		}
  		ClientGlobal.init(conf);
  		trackerClient = new TrackerClient();
  		trackerServer = trackerClient.getConnection();
  		storageServer = null;
  		storageClient = new StorageClient1(trackerServer, storageServer);
  	}
  	
  	/**
  	 * 上傳檔案方法
  	 * <p>Title: uploadFile</p>
  	 * <p>Description: </p>
  	 * @param fileName 檔案全路徑
  	 * @param extName 副檔名，不包含（.）
  	 * @param metas 檔案擴充套件資訊
  	 * @return
  	 * @throws Exception
  	 */
  	public String uploadFile(String fileName, String extName, NameValuePair[] metas) throws Exception {
  		String result = storageClient.upload_file1(fileName, extName, metas);
  		return result;
  	}
  	
  	public String uploadFile(String fileName) throws Exception {
  		return uploadFile(fileName, null, null);
  	}
  	
  	public String uploadFile(String fileName, String extName) throws Exception {
  		return uploadFile(fileName, extName, null);
  	}
  	
  	/**
  	 * 上傳檔案方法
  	 * <p>Title: uploadFile</p>
  	 * <p>Description: </p>
  	 * @param fileContent 檔案的內容，位元組陣列
  	 * @param extName 副檔名
  	 * @param metas 檔案擴充套件資訊
  	 * @return
  	 * @throws Exception
  	 */
  	public String uploadFile(byte[] fileContent, String extName, NameValuePair[] metas) throws Exception {
  		
  		String result = storageClient.upload_file1(fileContent, extName, metas);
  		return result;
  	}
  	
  	public String uploadFile(byte[] fileContent) throws Exception {
  		return uploadFile(fileContent, null, null);
  	}
  	
  	public String uploadFile(byte[] fileContent, String extName) throws Exception {
  		return uploadFile(fileContent, extName, null);
  	}
  }