fastdfs結合springBoot使用

需要先安裝好fastdfs服務，參考安裝介紹

集成java客戶端

1、下載客戶端源碼

git clone https://github.com/happyfish100/fastdfs-client-java.git

打開工程，自己在本地打包 mvn:install

2、在pom中增加客戶端依賴

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

配置

1、在配置文件中添加配置項

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 = 192.168.1.41:22122

2、創建屬性配置類FdfsConfig

@Data
@Component
@ConfigurationProperties(prefix = "fastdfs")
public class FdfsConfig {
	private int connectTimeoutInSeconds;
	private int networkTimeoutInSeconds;
	private String charset;
	private boolean httpAntiStealToken;
	private String httpSecretKey;
	private int httpTrackerHttpPort;
	private String trackerServers;
	
	public Properties getProperties() {
		Properties properties =new Properties();
		properties.put(ClientGlobal.PROP_KEY_TRACKER_SERVERS, trackerServers);
		properties.put(ClientGlobal.PROP_KEY_HTTP_TRACKER_HTTP_PORT, httpTrackerHttpPort);
		properties.put(ClientGlobal.PROP_KEY_HTTP_SECRET_KEY, httpSecretKey);
		properties.put(ClientGlobal.PROP_KEY_HTTP_ANTI_STEAL_TOKEN, httpAntiStealToken);
		properties.put(ClientGlobal.PROP_KEY_CHARSET, charset);
		properties.put(ClientGlobal.PROP_KEY_NETWORK_TIMEOUT_IN_SECONDS, networkTimeoutInSeconds);
		properties.put(ClientGlobal.PROP_KEY_CONNECT_TIMEOUT_IN_SECONDS, connectTimeoutInSeconds);
		return properties;
	}
}

3、在service中使用完整代碼示例

@Bean
public FileManageFdfsImpl fileManageFdfsImpl() {
	return new FileManageFdfsImpl();
}

public class FileManageFdfsImpl implements IFileManage {
	private final Logger logger = LoggerFactory.getLogger(getClass());
	@Autowired
	private FdfsConfig config;
	private TrackerClient trackerClient;

	@PostConstruct
	public void initStorageClient() throws Exception {
		Properties prop = config.getProperties();
		ClientGlobal.initByProperties(prop);
		logger.info("network_timeout=" + ClientGlobal.g_network_timeout + "ms");
		logger.info("charset=" + ClientGlobal.g_charset);
		trackerClient = new TrackerClient();
	}

	private void closeTrackerServer(TrackerServer trackerServer) {
		try {
			if (trackerServer != null) {
				trackerServer.close();
			}
		} catch (IOException e) {
			logger.error("error", e);
		}
	}

	/** 上傳文件到fastdfs */
	public void upload(InputStream input, SysFile sysFile, boolean isSmallPic) throws Exception {
		TrackerServer trackerServer = trackerClient.getConnection();
		StorageClient storageClient = new StorageClient(trackerServer, null);
		try {
			int length = input.available();
			byte[] bytes = new byte[length];
			input.read(bytes);
			NameValuePair[] metaList = new NameValuePair[1];
			metaList[0] = new NameValuePair("fileName", sysFile.getOriginalFilename());
			String[] result;
			if (isSmallPic) {
				result = storageClient.upload_file(sysFile.getBucketName(), bytes, null, metaList);
			} else {
				result = storageClient.upload_file(bytes, null, metaList);
			}
			input.close();
			logger.info("文件大小：" + bytes.length + " 字節");
			String group = null;
			String filePath = null;
			if (result != null && result.length == 2) {
				group = result[0];
				filePath = result[1];
			} else {
				throw new ApplicationException("附件上傳失敗:" + result);
			}
			sysFile.setBucketName(group);
			if (isSmallPic) {
				sysFile.setSmallPicKey(filePath);
			} else {
				sysFile.setFileKey(filePath);
			}
		} finally {
			closeTrackerServer(trackerServer);
		}
	}

	/** 文件下載 */
	public InputStream download(SysFile sysFile, boolean isSmallPic) throws Exception {
		TrackerServer trackerServer = trackerClient.getConnection();
		StorageClient storageClient = new StorageClient(trackerServer, null);
		try {
			String fileKey = sysFile.getFileKey();
			if (isSmallPic && StringUtils.isNotBlank(sysFile.getSmallPicKey())) {
				fileKey = sysFile.getSmallPicKey();
			}
			byte[] result = storageClient.download_file(sysFile.getBucketName(), fileKey);
			return new ByteArrayInputStream(result);
		} finally {
			storageClient.close();
			closeTrackerServer(trackerServer);
		}

	}

	/** 文件刪除 */
	public void delete(SysFile sysFile) throws Exception {

		TrackerServer trackerServer = trackerClient.getConnection();
		StorageClient storageClient = new StorageClient(trackerServer, null);
		try {
			storageClient.delete_file(sysFile.getBucketName(), sysFile.getFileKey());
			if (StringUtils.isNotBlank(sysFile.getSmallPicKey())) {
				storageClient.delete_file(sysFile.getBucketName(), sysFile.getSmallPicKey());
			}
		} finally {
			closeTrackerServer(trackerServer);
		}
	}
}

單獨上傳/下載/刪除示例

1、上傳

@Test
public void upload() throws Exception{
    NameValuePair[] metaList = new NameValuePair[1];
    String local_filename = "dl_erweim1a.png";
    metaList[0] = new NameValuePair("fileName", local_filename);
    File file = new File("D:/dl_erweim1a.png");
    InputStream inputStream = new FileInputStream(file);
    int length = inputStream.available();
    byte[] bytes = new byte[length];
    inputStream.read(bytes);
    String[] result = storageClient.upload_file(bytes, null, metaList);
    System.out.println( Arrays.asList(result));
//        LOGGER.info("result {}", Arrays.asList(result));
    Assert.assertEquals(2, result.length);
}

上傳成功後，返回String[]數組，分別是group和filePath

在文件下載/刪除時，也是傳入這兩個參數

2、下載

@Test
public void download() throws Exception {
    String[] uploadresult = {"group1", "M00/00/00/wKgBKV2NzQSAPCAsAAA-QqOY9ks2727402"};
    byte[] result = storageClient.download_file(uploadresult[0], uploadresult[1]);
    String local_filename = "d:/build.PNG";
    writeByteToFile(result, local_filename);
    File file = new File(local_filename);
    Assert.assertTrue(file.isFile());
}

3、刪除

@Test
public void delete() throws Exception {
	String[] uploadresult = {"group1", "M00/00/00/wKgBKV2NzQSAPCAsAAA-QqOY9ks2727402"};
	int result = storageClient.delete_file(uploadresult[0], uploadresult[1]);
	System.out.println(result);
//    	 Assert.assertTrue(result == 0);
}

返回0代表刪除成功

參考

https://github.com/happyfish100/fastdfs-client-java