FastDFS 服務端安裝參考文章：分布式文件系統之 FastDFS

安裝 FastDFS Java 客戶端

先從 GitHub 上將項目源碼克隆下來：

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

然后不要忘了部署到 Nexus 依賴私服：

$ mvn clean install deploy

最后在需要用到的項目中添加 POM 依賴即可：

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

引入依賴以后在 application.yml 中添加 FastDFS 服務端配置：

fastdfs:base:# 一般為 Nginx 代理地址url: http://{fastdfs_server ip}/ storage:type: fastdfsfastdfs:tracker_server: {tracker_server ip}

創建 FastDFS 工具類

定義文件存儲接口

package com.antoniopeng.fastdfs.service.upload;/*** 文件存儲服務接口*/ public interface StorageService {/*** 上傳文件** @param data 文件的二進制內容* @param extName 擴展名* @return 上傳成功后返回生成的文件 id；失敗返回 null*/public String upload(byte[] data, String extName);/*** 刪除文件** @param fileId 被刪除的文件id* @return 刪除成功后返回 0，失敗后返回錯誤代碼*/public int delete(String fileId); }

實現文件存儲接口

package com.antoniopeng.fastdfs.service.upload;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.TrackerGroup; import org.csource.fastdfs.TrackerServer; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.InitializingBean; import org.springframework.beans.factory.annotation.Value;import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter;/*** 文件存儲服務實現*/ public class FastDFSStorageService implements StorageService, InitializingBean {private static final Logger logger = LoggerFactory.getLogger(FastDFSStorageService.class);private TrackerClient trackerClient;@Value("${storage.fastdfs.tracker_server}")private String trackerServer;@Overridepublic String upload(byte[] data, String extName) {TrackerServer trackerServer = null;StorageServer storageServer = null;StorageClient1 storageClient1 = null;try {NameValuePair[] meta_list = null; // new NameValuePair[0];trackerServer = trackerClient.getConnection();if (trackerServer == null) {logger.error("getConnection return null");}storageServer = trackerClient.getStoreStorage(trackerServer);storageClient1 = new StorageClient1(trackerServer, storageServer);String fileid = storageClient1.upload_file1(data, extName, meta_list);logger.debug("uploaded file <{}>", fileid);return fileid;} catch (Exception ex) {logger.error("Upload fail", ex);return null;} finally {if (storageServer != null) {try {storageServer.close();} catch (IOException e) {e.printStackTrace();}}if (trackerServer != null) {try {trackerServer.close();} catch (IOException e) {e.printStackTrace();}}storageClient1 = null;}}@Overridepublic int delete(String fileId) {TrackerServer trackerServer = null;StorageServer storageServer = null;StorageClient1 storageClient1 = null;int index = fileId.indexOf('/');String groupName = fileId.substring(0, index);try {trackerServer = trackerClient.getConnection();if (trackerServer == null) {logger.error("getConnection return null");}storageServer = trackerClient.getStoreStorage(trackerServer, groupName);storageClient1 = new StorageClient1(trackerServer, storageServer);int result = storageClient1.delete_file1(fileId);return result;} catch (Exception ex) {logger.error("Delete fail", ex);return 1;} finally {if (storageServer != null) {try {storageServer.close();} catch (IOException e) {e.printStackTrace();}}if (trackerServer != null) {try {trackerServer.close();} catch (IOException e) {e.printStackTrace();}}storageClient1 = null;}}@Overridepublic void afterPropertiesSet() throws Exception {File confFile = File.createTempFile("fastdfs", ".conf");PrintWriter confWriter = new PrintWriter(new FileWriter(confFile));confWriter.println("tracker_server=" + trackerServer);confWriter.close();ClientGlobal.init(confFile.getAbsolutePath());confFile.delete();TrackerGroup trackerGroup = ClientGlobal.g_tracker_group;trackerClient = new TrackerClient(trackerGroup);logger.info("Init FastDFS with tracker_server : {}", trackerServer);} }

創建文件存儲工廠類

package com.antoniopeng.fastdfs.service.upload;import org.springframework.beans.factory.FactoryBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.beans.factory.config.AutowireCapableBeanFactory;import java.util.HashMap; import java.util.Map;/*** 文件存儲服務工廠類*/ public class StorageFactory implements FactoryBean<StorageService> {@Autowiredprivate AutowireCapableBeanFactory acbf;/*** 存儲服務的類型，目前僅支持fastdfs*/@Value("${storage.type}")private String type;private Map<String, Class<? extends StorageService>> classMap;public StorageFactory() {classMap = new HashMap<>();classMap.put("fastdfs", FastDFSStorageService.class);}@Overridepublic StorageService getObject() throws Exception {Class<? extends StorageService> clazz = classMap.get(type);if (clazz == null) {throw new RuntimeException("Unsupported storage type [" + type + "], valid are " + classMap.keySet());}StorageService bean = clazz.newInstance();acbf.autowireBean(bean);acbf.initializeBean(bean, bean.getClass().getSimpleName());return bean;}@Overridepublic Class<?> getObjectType() {return StorageService.class;}@Overridepublic boolean isSingleton() {return true;} }

配置文件存儲工廠類

package com.antoniopeng.fastdfs.service.upload;import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration;/*** Java 配置方式定義 StorageFactory 的 Bean 使其可以被依賴注入*/ @Configuration public class FastDFSConfiguration {@Beanpublic StorageFactory storageFactory() {return new StorageFactory();} }

創建 FastDFS 訪問控制器

package com.antoniopeng.fastdfs.controller.upload;import com.antoniopeng.fastdfs.service.upload.StorageService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.CrossOrigin; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.multipart.MultipartFile;import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;@CrossOrigin(origins = "*", maxAge = 3600) @RestController public class UploadController {@Value("${fastdfs.base.url}")private String FASTDFS_BASE_URL;@Autowiredprivate StorageService storageService;/*** 文件上傳** @param dropFile Dropzone* @param editorFiles wangEditor* @return*/@RequestMapping(value = "upload", method = RequestMethod.POST)public Map<String, Object> upload(MultipartFile dropFile, MultipartFile[] editorFiles) {Map<String, Object> result = new HashMap<>();// Dropzone 上傳if (dropFile != null) {result.put("fileName", writeFile(dropFile));}// wangEditor 上傳if (editorFiles != null && editorFiles.length > 0) {List<String> fileNames = new ArrayList<>();for (MultipartFile editorFile : editorFiles) {fileNames.add(writeFile(editorFile));}result.put("errno", 0);result.put("data", fileNames);}return result;}/*** 將圖片寫入指定目錄** @param multipartFile* @return 返回文件完整路徑*/private String writeFile(MultipartFile multipartFile) {// 獲取文件后綴String oName = multipartFile.getOriginalFilename();String extName = oName.substring(oName.lastIndexOf(".") + 1);// 文件存放路徑String url = null;try {String uploadUrl = storageService.upload(multipartFile.getBytes(), extName);url = FASTDFS_BASE_URL + uploadUrl;} catch (IOException e) {e.printStackTrace();}// 返回文件完整路徑return url;} }

• 文章作者：彭超

• 本文首發于個人博客：https://antoniopeng.com

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