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

fastdfs.connect_timeout_in_seconds = 5
fastdfs.network_timeout_in_seconds = 30
fastdfs.charset = UTF-8
fastdfs.http_anti_steal_token = false
fastdfs.http_secret_key = FastDFS1234567890
fastdfs.http_tracker_http_port = 80
fastdfs.tracker_servers = 192.168.1.7:22122

@Test
public void initConifg() throws Exception {
 // 加载配置文件 
 ClientGlobal.initByProperties("config/fastdfs-client.properties");       
 System.out.println("ClientGlobal.configInfo():" + ClientGlobal.configInfo());
}

ClientGlobal.configInfo():{
 g_connect_timeout(ms) = 5000
 g_network_timeout(ms) = 30000
 g_charset = UTF-8
 g_anti_steal_token = false
 g_secret_key = FastDFS1234567890
 g_tracker_http_port = 80
 trackerServers = 192.168.1.7:22122
}

//成员变量
TrackerServer trackerServer = null;
StorageServer storageServer = null;
StorageClient storageClient = null;
/**
 * 初始化连接信息
 * @author: wrh45
 * @date: 2017年8月5日下午8:08:57
 */
@Before
public void init() throws Exception {
  // 加载配置文件
  ClientGlobal.initByProperties("config/fastdfs-client.properties");
  // 获取连接
  TrackerClient trackerClient = new TrackerClient();
  trackerServer = trackerClient.getConnection();
  storageClient = new StorageClient(trackerServer, storageServer);
}

/**
 * 上传图片
 * @throws Exception
 * @author: wrh45
 * @date: 2017年8月5日下午7:09:23
 */
@Test
public void uploadFileOfByte() throws Exception {
 // 获取文件字节信息
 file = new File("src/test/resources/pic/Ace.jpg");
 FileInputStream inputStream = new FileInputStream(file);
 byte[] file_buff = new byte[(int) file.length()];
 inputStream.read(file_buff);
 // 获取文件扩展名
 String fileName = file.getName();
 String extName = null;
 if (fileName.contains(".")) {
  extName = fileName.substring(fileName.lastIndexOf(".") + 1);
 } else {
  return;
 }
 // 图片元数据,如果设置为空，那么服务器上不会生成-m的原数据文件
 NameValuePair[] meta_list = new NameValuePair[2];
 meta_list[0] = new NameValuePair("fileName", "测试专用");
 meta_list[1] = new NameValuePair("length", "测试专用");
 // 文件上传，返回组名和访问地址
 String[] upload_file = storageClient.upload_file(file_buff, extName, meta_list);
 System.out.println(Arrays.asList(upload_file));
}

/**
 * 下载图片
 * @throws Exception
 * @author: wrh45
 * @date: 2017年8月5日下午8:09:10
 */
@Test
public void downLoadFile() throws Exception {
 // 下载文件，返回字节数组
 byte[] file_buff = storageClient.download_file("group1", "M00/00/00/wKgBB1l-EwyAGvxuAAWkdYkPHEE854.jpg");
 // 将数据写文件中
 File file = new File("src/test/resources/pic/Ace2.jpg");
 FileOutputStream outStream = new FileOutputStream(file);
 outStream.write(file_buff);
 outStream.flush();
 outStream.close();
}

/**
 * 元数据信息
 * @throws Exception
 * @author: wrh45
 * @date: 2017年8月5日下午8:09:38
 */
@Test
public void metaData() throws Exception {
 // 上传图片的时候，元数据若为空将无法生存-m的原数据文件。获取时候此处将抛出NullPointerException
 NameValuePair[] get_metadata = storageClient.get_metadata("group1",
  "M00/00/00/wKgBB1l-EwyAGvxuAAWkdYkPHEE854.jpg");
 for (NameValuePair nameValuePair: get_metadata) {
  System.out.println("name: " + nameValuePair.getName() + " value: " + nameValuePair.getValue());
 }
}

/**
 * 获取文件信息
 * @author: wrh45
 * @date: 2017年8月7日下午9:02:47
 */
@Test
public void getFileInfo() throws Exception {
 FileInfo fileInfo = storageClient.get_file_info("group1", "M00/00/00/wKgBB1l-EwyAGvxuAAWkdYkPHEE854.jpg");
 System.out.println("CRC32签名：" + fileInfo.getCrc32());
 System.out.println("文件大小：" + fileInfo.getFileSize());
 System.out.println("服务器地址：" + fileInfo.getSourceIpAddr());
 System.out.println("创建时间：" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(fileInfo.getCreateTimestamp()));
}

/**
 * 删除文件
 * @throws Exception
 * @author: wrh45
 * @date: 2017年8月7日下午9:10:04
 */
@Test
public void deleteFile() throws Exception {
 // 返回0成功，否则返回错误吗
 int code = storageClient.delete_file("group1", "M00/00/00/wKgBB1l-EwyAGvxuAAWkdYkPHEE854.jpg");
 System.out.println(code);
}

/**
 * 上传文件工具类
 * @ClassName: FileUploadUtils
 * @author wrh45
 * @date 2017年8月8日下午4:14:31
 */
public class FileUploadUtils {
 private static TrackerClient trackerClient = null;
 private static TrackerServer trackerServer = null;
 private static StorageServer storageServer = null;
 private static StorageClient storageClient = null;
 private static final String groupName = "group1";
 static {
  // 加载配置文件
  try {
   ClientGlobal.initByProperties("config/fastdfs-client.properties");
   // System.out.println("ClientGlobal.configInfo():" +
   // ClientGlobal.configInfo());
  } catch (IOException | MyException e) {
   e.printStackTrace();
   System.out.println("load config file fail");
  }
 }
 /*
  * 初始化连接数据
  */
 private static void init() {
  try {
   trackerClient = new TrackerClient();
   trackerServer = trackerClient.getConnection();
   storageClient = new StorageClient(trackerServer, storageServer);
  } catch (IOException e) {
   e.printStackTrace();
   System.out.println("init fail");
  }
 }
 /**
  * 上传文件
  * @param filePath 文件路径
  * @param fileName 文件名称
  * @return 文件存储信息
  * @author: wrh45
  * @date: 2017年8月5日下午11:10:38
  */
 public static String[] uploadFile(String filePath, String fileName) {
  return uploadFile(null, filePath, fileName);
 }
 /**
  * 上传文件
  * @param fileBuff 文件字节数组
  * @param fileName 文件名称
  * @return 文件存储信息
  * @author: wrh45
  * @date: 2017年8月5日下午11:10:38
  */
 public static String[] uploadFile(byte[] fileBuff, String fileName) {
  return uploadFile(fileBuff, null, fileName);
 }
 /**
  * 上传文件
  * @param file_buff 文件字节数组
  * @param filePath 文件路径
  * @param fileName 文件名称
  * @return 文件存储信息
  * @author: wrh45
  * @date: 2017年8月5日下午10:58:19
  */
 private static String[] uploadFile(byte[] fileBuff, String filePath, String fileName) {
  try {
   if (fileBuff == null && filePath == null) {
    return new String[0];
   }
   // 初始化数据
   if (storageClient == null) {
    init();
   }
   // 获取文件扩展名称
   String fileExtName = "";
   if (fileName != null && !"".equals(fileName) && fileName.contains(".")) {
    fileExtName = fileName.substring(fileName.lastIndexOf(".") + 1);
   } else {
    return new String[0];
   }
   // 设置图片元数据
   NameValuePair[] metaList = new NameValuePair[3];
   metaList[0] = new NameValuePair("fileName", fileName);
   metaList[1] = new NameValuePair("fileExtName", fileExtName);
   metaList[2] = new NameValuePair("fileSize", String.valueOf(fileBuff.length));
   // 上传文件
   String[] uploadFile = null;
   if (fileBuff != null && filePath == null) {
    if (fileBuff.length == 0) {
     return new String[0];
    }
    uploadFile = storageClient.upload_file(fileBuff, fileExtName, metaList);
   } else {
    //路径匹配Windown和Linux
    if ("".equals(filePath) || !(filePath.matches("^[a-zA-Z]:{1}([\u4e00-\u9fa5\\w/_\\\\-]+)$") || filePath.matches("^(/[\u4e00-\u9fa5\\w_-]+)+$"))) {
     return new String[0];
    }
    uploadFile = storageClient.upload_file(filePath, fileExtName, metaList);
   }
   return uploadFile == null ? new String[0] : uploadFile;
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   try {
    if (trackerServer != null) {
     trackerServer.close();
     trackerServer = null;
    }
    if (storageServer != null) {
     storageServer.close();
     storageServer = null;
    }
   } catch (IOException e) {
    e.printStackTrace();
   }
  }
  return new String[0];
 }
 /**
  * 删除服务器文件
  * @param remoteFileName 文件在服务器中名称
  * @author: wrh45
  * @date: 2017年8月6日上午12:15:22
  */
 public static int deleteFile(String remoteFileName) {
  try {
   if (remoteFileName == null || "".equals(remoteFileName) || !remoteFileName.contains(groupName)) {
    return -1;
   }
   if (storageClient == null) {
    init();
   }
   String fileURL = remoteFileName.substring(remoteFileName.indexOf(groupName));
   String group = fileURL.substring(0, remoteFileName.indexOf("/") + 1);
   String fileName = fileURL.substring(remoteFileName.indexOf("/") + 2);
   int code = storageClient.delete_file(group, fileName);
   return code;
  } catch (Exception e) {
   e.printStackTrace();
   System.out.println("The File Delete Fail");
  }
  return -1;
 }
 /**
  * 获取文件信息
  * @param groupName 组名
  * @param remoteFilename 远程文件名
  * @return
  * @author: wrh45
  * @date: 2017年8月8日上午12:25:26
  */
 public static FileInfo getFileInfo(String groupName, String remoteFilename) {
  try {
   if (storageClient == null) {
    init();
   }
   FileInfo fileInfo = storageClient.get_file_info(groupName, remoteFilename);
   return fileInfo;
  } catch (Exception e) {
   e.printStackTrace();
   System.out.println("Get File Info Fail");
     }
  return null;
 }
}