fastDFS 使用fastDFS实现文件上传和下载

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1. 搭建环境

这里我们使用javaApi测试文件的上传，java版本的fastdfs-client地址在： https://github.com/happyfish100/fastdfs-client-java 参考此工程编写测试用例。

1）创建maven工程

pom.xml

        
            org.springframework.boot
            spring-boot-starter-web
        
        
        
            net.oschina.zcx7878
            fastdfs-client-java
            1.27.0.0
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            org.apache.commons
            commons-io
            1.3.2
        
    

2) 配置 文件

在classpath:config下创建fastdfs-client.properties文件

fastdfs.connect_timeout_in_seconds = 5
fastdfs.network_timeout_in_seconds = 30
fastdfs.charset = UTF-8
fastdfs.tracker_servers = 192.168.101.65:22122

2. 文件上传

//上传文件
@Test
public void testUpload() {
	try {
		ClientGlobal.initByProperties("config/fastdfs‐client.properties");
		System.out.println("network_timeout=" + ClientGlobal.g_network_timeout + "ms");
		System.out.println("charset=" + ClientGlobal.g_charset);
		//创建客户端
		TrackerClient tc = new TrackerClient();
		//连接tracker Server
		TrackerServer ts = tc.getConnection();
		if (ts == null) {
			System.out.println("getConnection return null");
			return;
		}
		//获取一个storage server
		StorageServer ss = tc.getStoreStorage(ts);
		if (ss == null) {
			System.out.println("getStoreStorage return null");
		}
		//创建一个storage存储客户端
		StorageClient1 sc1 = new StorageClient1(ts, ss);
		NameValuePair[] meta_list = null; //new NameValuePair[0];
		String item = "C:\\Users\\admin\\Desktop\\1.png";
		String fileid;
		fileid = sc1.upload_file1(item, "png", meta_list);
		System.out.println("Upload local file " + item + " ok, fileid=" + fileid);
	} catch (Exception ex) {
		ex.printStackTrace();
	}
}

3. 文件查询

//查询文件
@Test
public void testQueryFile() throws IOException, MyException {
	ClientGlobal.initByProperties("config/fastdfs‐client.properties");
	TrackerClient tracker = new TrackerClient();
	TrackerServer trackerServer = tracker.getConnection();
	StorageServer storageServer = null;
	StorageClient storageClient = new StorageClient(trackerServer,storageServer);
	FileInfo fileInfo = storageClient.query_file_info("group1",
"M00/00/01/wKhlQFrKBSOAW5AWAALcAg10vf4862.png");
	System.out.println(fileInfo);
}

4. 文件下载

//下载文件
@Test
public void testDownloadFile() throws IOException, MyException {
	ClientGlobal.initByProperties("config/fastdfs‐client.properties");
	TrackerClient tracker = new TrackerClient();
	TrackerServer trackerServer = tracker.getConnection();
	StorageServer storageServer = null;
	StorageClient1 storageClient1 = new StorageClient1(trackerServer,storageServer);
	byte[] result =storageClient1.download_file1("group1/M00/00/01/wKhlQFrKBSOAW5AWAALcAg10vf4862.png");
	File file = new File("d:/1.png");
	FileOutputStream fileOutputStream = new FileOutputStream(file);
	fileOutputStream.write(result);
	fileOutputStream.close();
}