Java fastdfs客户端实现上传下载文件

一、项目结构

二、pom.xml

  4.0.0
  org.example
  A01fastdfs
  1.0-SNAPSHOT

  
    
    
      net.oschina.zcx7878
      fastdfs-client-java
      1.27.0.0
    
    
      junit
      junit
      4.13
      test
    
    
    
      org.apache.commons
      commons-io
      1.3.2
    
  

  
    
      
 org.apache.maven.plugins
 maven-compiler-plugin
 
   1.9
   1.9
 
      
    
  

三、fastdfs-client.properties

#http连接超时时间
fastdfs.connect_timeout_in_seconds=5
#tracker和storage网络通信超时时间
fastdfs.network_timeout_in_seconds=30
#字符编码
fastdfs.charset=utf-8
#tracker服务器地址，多个地址中间用英文逗号分隔
fastdfs.tracker_servers=192.168.2.105:22122

四、测试

package com.wuxi.test;

import org.csource.fastdfs.*;
import org.junit.Test;

import java.io.File;
import java.io.FileOutputStream;

public class MyTest {
  //上传文件
  @Test
  public void testUpload() {
    try {
      //加载fastdfs-client.properties配置文件
      ClientGlobal.initByProperties("config/fastdfs-client.properties");
      //定义TrackerClient，用于请求TrackerServer
      TrackerClient trackerClient = new TrackerClient();
      //连接tracker
      TrackerServer trackerServer = trackerClient.getConnection();
      //获取storage
      StorageServer storeStorage = trackerClient.getStoreStorage(trackerServer);
      //创建storageClient
      StorageClient1 storageClient1 = new StorageClient1(trackerServer, storeStorage);
      //向storage服务器上传文件
      //本地文件的路径
      String path = "F:/java/resource/data.txt";
      //上传成功后拿到文件Id
      String fileId = storageClient1.upload_file1(path, "txt", null);
      System.out.println(fileId);//group1/M00/00/00/wKgCaV9vaSaARBTKAAAAGjJpL2g017.txt
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  //下载文件
  @Test
  public void testDownload() {
    try {
      //加载fastdfs-client.properties配置文件
      ClientGlobal.initByProperties("config/fastdfs-client.properties");
      //定义TrackerClient，用于请求TrackerServer
      TrackerClient trackerClient = new TrackerClient();
      //连接tracker
      TrackerServer trackerServer = trackerClient.getConnection();
      //获取storage
      StorageServer storeStorage = trackerClient.getStoreStorage(trackerServer);
      //创建storageClient
      StorageClient1 storageClient1 = new StorageClient1(trackerServer, storeStorage);
      //下载文件
      //文件id
      String fileId = "group1/M00/00/00/wKgCaV9vaSaARBTKAAAAGjJpL2g017.txt";
      byte[] bytes = storageClient1.download_file1(fileId);
      //使用输出流保存文件
      FileOutputStream fileOutputStream = new FileOutputStream(new File("F:/data.txt"));
      fileOutputStream.write(bytes);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

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