fastDFS 使用fastDFS实现文件上传和下载-蒲公英云

fastDFS 使用fastDFS实现文件上传和下载

清疚 2022-10-02 06:42 90阅读 0赞

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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

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/net.oschina.zcx7878/fastdfs-client-java -->
        <dependency>
            <groupId>net.oschina.zcx7878</groupId>
            <artifactId>fastdfs-client-java</artifactId>
            <version>1.27.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>
    </dependencies>

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();
}