Java实现FastDFS文件上传、查询、下载和删除

今天药忘吃喽~ 2022-10-22 04:30 224阅读 0赞

1、配置内容：

## fastdfs-client.properties
    
    fastdfs.connect_timeout_in_seconds = 5
    fastdfs.network_timeout_in_seconds = 30
    
    fastdfs.charset = UTF-8
    
    fastdfs.http_anti_steal_token = false
    fastdfs.http_secret_key = FastDFS1234567890
    fastdfs.http_tracker_http_port = 8080
    
    fastdfs.tracker_servers = 192.168.18.130:22122

2、Java内容：

package com.jd;
    
    import org.csource.common.NameValuePair;
    import org.csource.fastdfs.*;
    import org.junit.jupiter.api.Test;
    
    class Tests {
    
        //上传文件
        @Test
        public void upload() {
            try {
                //加载FastDFS客户端配置文件
                ClientGlobal.initByProperties("fastdfs-client.properties");
                //创建tracker客户端
                TrackerClient trackerClient = new TrackerClient();
                //建立与Tracker服务器的连接
                TrackerServer trackerServer = trackerClient.getConnection();
                //建立与Storage服务器的连接
                StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
                //获取storage客户端
                StorageClient storageClient = new StorageClient(trackerServer, storageServer);
    
                //定义文件元数据
                NameValuePair[] metaList = new NameValuePair[2];
                metaList[0] = new NameValuePair("id", "bbc3dc68-4f25-450c-8022-63d2c0dfd5e0");
                metaList[1] = new NameValuePair("描述", "这是一张适用于Windows操作系统的桌面背景图片。");
                String path = "C:/Windows/Web/Screen/img100.jpg";
                String [] fileInfoes = storageClient.upload_file(path, "jpg", metaList);
                System.out.println("groupName："+fileInfoes[0]);//group1
                System.out.println("remoteFileName："+fileInfoes[1]);//M00/00/00/wKgSjGBpOU-AKLKOAAsZd_e-IiM892.jpg
                storageServer.close();
                trackerServer.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        //查询文件
        @Test
        public void query() {
            try {
                //加载FastDFS客户端配置文件
                ClientGlobal.initByProperties("fastdfs-client.properties");
                //创建tracker客户端
                TrackerClient trackerClient = new TrackerClient();
                //建立与Tracker服务器的连接
                TrackerServer trackerServer = trackerClient.getConnection();
                //建立与Storage服务器的连接
                StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
                //获取storage客户端
                StorageClient storageClient = new StorageClient(trackerServer, storageServer);
    
                NameValuePair[] nvps = storageClient.get_metadata("group1", "M00/00/00/wKgSjGBpOU-AKLKOAAsZd_e-IiM892.jpg");
                for (NameValuePair nvp : nvps) {
                    System.out.println(nvp.getName() + "：" + nvp.getValue());
                }
                FileInfo fileInfo = storageClient.query_file_info("group1", "M00/00/00/wKgSjGBpOU-AKLKOAAsZd_e-IiM892.jpg");
                System.out.println(fileInfo);
                storageServer.close();
                trackerServer.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        //下载文件
        @Test
        public void download() {
            try {
                //加载FastDFS客户端配置文件
                ClientGlobal.initByProperties("fastdfs-client.properties");
                //创建tracker客户端
                TrackerClient trackerClient = new TrackerClient();
                //建立与Tracker服务器的连接
                TrackerServer trackerServer = trackerClient.getConnection();
                //建立与Storage服务器的连接
                StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
                //获取storage客户端
                StorageClient storageClient = new StorageClient(trackerServer, storageServer);
    
                int result = storageClient.download_file("group1","M00/00/00/wKgSjGBpOU-AKLKOAAsZd_e-IiM892.jpg","D:/1.png");
                if (result == 0) {
                    System.out.println("下载成功");
                } else {
                    System.out.println("下载失败");
                }
                storageServer.close();
                trackerServer.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        //删除文件
        @Test
        public void delete() {
            try {
                //加载FastDFS客户端配置文件
                ClientGlobal.initByProperties("fastdfs-client.properties");
                //创建tracker客户端
                TrackerClient trackerClient = new TrackerClient();
                //建立与Tracker服务器的连接
                TrackerServer trackerServer = trackerClient.getConnection();
                //建立与Storage服务器的连接
                StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
                //获取storage客户端
                StorageClient storageClient = new StorageClient(trackerServer, storageServer);
    
                Integer result = storageClient.delete_file("group1", "M00/00/00/wKgSjGBpOU-AKLKOAAsZd_e-IiM892.jpg");
                if (result == 0) {
                    System.out.println("删除成功");
                } else {
                    System.out.println("删除失败");
                }
                storageServer.close();
                trackerServer.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }