FastDFS api介紹

1. 命令行api介紹

FastDFS提供了可用於運維測試的命令行api，下面進行介紹：

1.1 fastdfs服務管理

1. tracker進程服務管理腳本

 /etc/init.d/fdfs_trackerd [start|stop|restart] 

2. storage進程服務管理腳本

/etc/init.d/fdfs_storaged [start|stop|restart] 

1.2 集群信息

用於查看集群信息，包括：tracker信息、storage信息、group信息以及集群運行狀況；命令可以在任意一台storage 節點上執行

/usr/bin/fdfs_monitor /etc/fdfs/storage.conf 

如下圖，集群由兩個tracker，兩個group。其中group2中的storage1處於下線不可用狀態

1.3 刪除storage節點

/usr/bin/fdfs_monitor /etc/fdfs/storage.conf delete group2 192.168.56.11 

1.4 文件上傳

/usr/bin/fdfs_upload_file /etc/fdfs/client.conf [文件名] 

例如上傳nginx-1.14.0.tar.gz文件

/usr/bin/fdfs_upload_file /etc/fdfs/client.conf ./nginx-1.14.0.tar.gz 

返回包含文件在fastdfs存儲路徑（store_path0下）信息和存儲文件名信息

group1/M00/00/00/wKg4CltFU7WAAzX-AA-B0CmJB5A.tar.gz 

此時可以通過瀏覽器訪問剛剛上傳的文件

1.5 文件下載

/usr/bin/fdfs_download_file <config_file> <file_id> [local_filename] [<download_offset> <download_bytes>] 

例如，下載fastdfs中的nginx（wKg4CltFWAKADvr_AA-B0CmJB5A.tar.gz ）到本地，指定下載的文件名文件名為nginxdownload.tar.gz

/usr/bin/fdfs_download_file /etc/fdfs/client.conf group1/M00/00/00/wKg4CltFWAKADvr_AA-B0CmJB5A.tar.gz nginxdownload.tar.gz 

1.6 文件刪除

/usr/bin/fdfs_delete_file <config_file> <file_id> 

例如刪除上邊上傳的nginx

/usr/bin/fdfs_delete_file /etc/fdfs/client.conf group1/M00/00/00/wKg4CltFU7WAAzX-AA-B0CmJB5A.tar.gz 

2. java api 使用

FastDFS提供了良好的java api接口，源碼GitHub下載地址：https://github.com/happyfish100/fastdfs-client-java.git 。
引入api的方式有兩種：

2.1 引入api

1. ant源碼構建

ant clean package 

2. maven源碼構建

mvn clean install 

pom.xml 依賴添加

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

2.2 配置

添加配置文件fdfs_client.conf，增加以下配置

connect_timeout = 2
network_timeout = 30
charset = UTF-8
http.tracker_http_port = 80
http.anti_steal_token = no
http.secret_key = FastDFS1234567890

tracker_server = 192.168.56.10:22122
tracker_server = 192.168.56.11:22122

http.anti_steal_token：配置防盜鏈，no表示不開啟（詳細參考FastDFS防盜鏈一節）
http.secret_key：防盜鏈密碼
tracker_server：tracker連接信息，有多少tracker就配置幾個

2.3 api 簡單使用

單例模式，無線程池；讀取classpath下fdfs_client.conf配置文件

package com.aixin.tuna.fdfs; import org.csource.fastdfs.*; import java.sql.Connection; import java.sql.SQLException; /** * Created by dailin on 2018/7/11. */ public class FdfsUtil { static class Nested { private static TrackerServer trackerServer =null; private static StorageServer storageServer = null; private static StorageClient storageClient = null; static { try { ClientGlobal.init("fdfs_client.conf"); TrackerClient tracker = new TrackerClient(); trackerServer = tracker.getConnection(); storageClient = new StorageClient(trackerServer, storageServer); }catch (Exception e) { e.printStackTrace(); } } } //獲取單例 public static StorageClient getStorageClient() { return Nested.storageClient; } } 

測試：

package fdfs; import java.io.FileOutputStream; import java.io.OutputStream; import com.aixin.tuna.fdfs.FdfsUtil; import org.csource.common.NameValuePair; import org.csource.fastdfs.FileInfo; import org.csource.fastdfs.StorageClient; import org.junit.Before; import org.junit.Test; public class TestFastDfs { private StorageClient storageClient; @Before public void init() { this.storageClient = FdfsUtil.getStorageClient(); } /** * 測試文件上傳，得到上傳后的文件路徑及文件名稱 */ @Test public void testUpload() { try { String local_filename = "C:\\Users\\1\\Desktop\\1.png"; //本地文件路徑 String[] file = storageClient.upload_file(local_filename, "png", null); System.out.println(file.length); System.out.println("組名：" + file[0]); System.out.println("路徑: " + file[1]); } catch (Exception e) { e.printStackTrace(); } } /** * 測試文件下載，根據文件所在group和文件路徑信息訪問文件 */ @Test public void testDownload() { try { String groupName = "group2"; String filePath = "M00/00/00/wKg4C1tFegGAK7WZAADdeFFxlXA481.png"; byte[] bytes = storageClient.download_file(groupName, filePath); String storePath = "C:\\Users\\1\\Desktop\\download1.png"; OutputStream out = new FileOutputStream(storePath); out.write(bytes); out.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 獲取文件基本信息，根據文件所在group和文件路徑信息訪問文件 */ @Test public void testGetFileInfo() { try { String groupName = "group2"; String filePath = "M00/00/00/wKg4C1tFegGAK7WZAADdeFFxlXA481.png"; FileInfo file = storageClient.get_file_info(groupName, filePath); System.out.println("source_ip:" + file.getSourceIpAddr()); System.out.println("file_size:" + file.getFileSize()); System.out.println("upload_time:" + file.getCreateTimestamp()); System.out.println(file.toString()); } catch (Exception e) { e.printStackTrace(); } } @Test public void testGetFileMatedata() { try { String groupName = "group2"; String filePath = "M00/00/00/wKg4C1tFmmqATh8jAA-B0CmJB5A.tar.gz"; NameValuePair nvps[] = storageClient.get_metadata(groupName, filePath); if (null != nvps && nvps.length > 0) { for (NameValuePair nvp : nvps) { System.out.println(nvp.getName() + ":" + nvp.getValue()); } } } catch (Exception e) { e.printStackTrace(); } } /** * 刪除文件，根據文件所在group和文件路徑信息訪問文件 */ @Test public void testDelete() { try { String groupName = "group2"; String filePath = "M00/00/00/wKg4C1tFlT6ASyqKAADdeFFxlXA080.png"; int i = storageClient.delete_file(groupName, filePath); System.out.println(i == 0 ? "刪除成功" : "刪除失敗:" + i); } catch (Exception e) { e.printStackTrace(); } } }