FastDFS Java Api 操作FastDFS Java Api 操作

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概述

FastDFS Java Api 操作

1.用eclipse把源代码打成jar文件：(源代码下载地址： https://github.com/happyfish100/fastdfs-client-java)

2、把fastdfs_client.jar 添加到Maven仓库

#执行 maven命令 添加fastdfs_client.jar 到maven 仓库
mvn install:install-file -DgroupId=org.csource -DartifactId=fastdfs-client-java -Dversion=5.0.4 -Dpackaging=jar -Dfile=/Users/shenwei/Desktop/fastdfs_client.jar

3、查看 fastdfs_client.jar。可以看到jar文件

4、创建一个maven项目，在pom中添加 fastdfs_client 依赖。

#添加依赖
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>4.11</version>
  <scope>test</scope>
</dependency>
 
<dependency>
  <groupId>org.csource</groupId>
  <artifactId>fastdfs-client-java</artifactId>
  <version>5.0.4</version>
</dependency>

5、在src/main/resource 下创建 fdfs_client.conf 配置文件

#fdfs_client.conf 配置
connect_timeout = 10
network_timeout = 30
charset = UTF-8
http.tracker_http_port = 8888
http.anti_steal_token = no
http.secret_key = FastDFS1234567890

tracker_server = 100.98.22.253:22122
#如果有多台服务，指定集群的IP
#tracker_server = 192.168.10.250:22122

6、测试fastDFS 上传、下载、删除、获取文件信息

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.csource.common.NameValuePair;
import org.csource.fastdfs.ClientGlobal;
import org.csource.fastdfs.FileInfo;
import org.csource.fastdfs.StorageClient;
import org.csource.fastdfs.StorageClient1;
import org.csource.fastdfs.StorageServer;
import org.csource.fastdfs.TrackerClient;
import org.csource.fastdfs.TrackerServer;
import org.junit.Test;

public class TestFastDfs {
    
	//fdfs_client 核心配置文件
    public String conf_filename = "src/main/resources/fdfs_client.conf"; 

    @Test
    public void testUpload() {	//上传文件
    	TrackerServer trackerServer =null;
    	StorageServer storageServer = null;
    	
        try { 
            ClientGlobal.init(conf_filename);
            TrackerClient tracker = new TrackerClient(); 
            trackerServer = tracker.getConnection(); 
            StorageClient1 client = new StorageClient1(trackerServer, storageServer); 
            
            //要上传的文件路径
            String local_filename = "/Users/shenwei/Desktop/1.png";
//            这个参数可以指定，也可以不指定，如果指定了，可以根据 testGetFileMate()方法来获取到这里面的值
//            NameValuePair nvp [] = new NameValuePair[]{ 
//                    new NameValuePair("age", "18"), 
//                    new NameValuePair("sex", "male") 
//            }; 
            
            StorageClient storageClient = new StorageClient(trackerServer, storageServer);
//          String fileIds[] = storageClient.upload_file(local_filename, "png", nvp);
            String fileIds[] = storageClient.upload_file(local_filename, "png", null);
            
            System.out.println(fileIds.length); 
            System.out.println("组名：" + fileIds[0]); 
            System.out.println("路径: " + fileIds[1]);
        } catch (Exception e) { 
            e.printStackTrace(); 
        } finally{
			try {
				if(null!=storageServer) storageServer.close();
				if(null!=trackerServer) trackerServer.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        }
    }

    @Test 
    public void testDownload() {	//下载文件
    	TrackerServer trackerServer =null;
    	StorageServer storageServer = null;
    	
        try {
        	String groupName = "group1";
        	String filePath = "M00/00/00/ZGIW_lpujW-ADvpRAAblmT4ACuo125.png";
            ClientGlobal.init(conf_filename);

            TrackerClient tracker = new TrackerClient(); 
            trackerServer = tracker.getConnection(); 

            StorageClient storageClient = new StorageClient(trackerServer, storageServer); 
            byte[] bytes = storageClient.download_file(groupName, filePath); 
            
            String storePath = "/Users/shenwei/Desktop/download.png";
            OutputStream out = new FileOutputStream(storePath);
            out.write(bytes);
        } catch (Exception e) { 
            e.printStackTrace(); 
        } finally{
			try {
				if(null!=storageServer) storageServer.close();
				if(null!=trackerServer) trackerServer.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
        }
    }
    
    @Test 
    public void testGetFileInfo(){ //获取文件信息
    	TrackerServer trackerServer =null;
    	StorageServer storageServer = null;
    
        try { 
        	String groupName = "group1";
        	String filePath = "M00/00/00/ZGIW_lpujW-ADvpRAAblmT4ACuo125.png";
            ClientGlobal.init(conf_filename);

            TrackerClient tracker = new TrackerClient(); 
            trackerServer = tracker.getConnection(); 

            StorageClient storageClient = new StorageClient(trackerServer, storageServer); 
            FileInfo file = storageClient.get_file_info(groupName, filePath); 
            System.out.println("ip--->"+file.getSourceIpAddr()); 
            System.out.println("文件大小--->"+file.getFileSize()); 
            System.out.println("文件上传时间--->"+file.getCreateTimestamp()); 
            System.out.println(file.getCrc32()); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } finally{
			try {
				if(null!=storageServer) storageServer.close();
				if(null!=trackerServer) trackerServer.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
       }
    } 
    
    @Test 
    public void testGetFileMate(){ //获取文件的原数据类型
    	TrackerServer trackerServer =null;
    	StorageServer storageServer = null;
    	
    	try { 
    		String groupName = "group1";
        	String filePath = "M00/00/00/ZGIW_lpujW-ADvpRAAblmT4ACuo125.png";
    		ClientGlobal.init(conf_filename);

            TrackerClient tracker = new TrackerClient(); 
            trackerServer = tracker.getConnection(); 

            StorageClient storageClient = new StorageClient(trackerServer, 
                    storageServer); 
            
            //这个值是上传的时候指定的NameValuePair
            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(); 
        } finally{
			try {
				if(null!=storageServer) storageServer.close();
				if(null!=trackerServer) trackerServer.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
       }
    } 
    
    @Test 
    public void testDelete(){ //删除文件
    	TrackerServer trackerServer =null;
    	StorageServer storageServer = null;
    	
    	try { 
    		String groupName = "group1";
        	String filePath = "M00/00/00/ZGIW_lpujW-ADvpRAAblmT4ACuo125.png";
    		ClientGlobal.init(conf_filename);

            TrackerClient tracker = new TrackerClient(); 
            trackerServer = tracker.getConnection(); 

            StorageClient storageClient = new StorageClient(trackerServer, 
                    storageServer); 
            int i = storageClient.delete_file(groupName, filePath); 
            System.out.println( i==0 ? "删除成功" : "删除失败:"+i); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } finally{
			try {
				if(null!=storageServer) storageServer.close();
				if(null!=trackerServer) trackerServer.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
       }
    }
}