fastdfs集群文件上传，下载，删除

源码

UploadController

@EnableSwagger2
@RestController
@RequestMapping("/request")
@Api(description = "fdfs文件上传与下载")
public class UploadController {
    private static final  String URL = "classpath:fdfs_client.conf";

    @PostMapping("/uploadFile")
    @ApiOperation("fdfs方法上传")
    public String uploadFile(@RequestParam("file") MultipartFile uploadFile) throws Exception {
        //文件名
        String originalName = uploadFile.getOriginalFilename();
        //拓展名
        String name = originalName.substring(originalName.lastIndexOf('.')+1);
        String path = FastDFSUtils.upload_file(uploadFile.getBytes(), originalName, uploadFile.getSize());
        return path;
    }

    //没实现选定下载地址
    @GetMapping("/downLoadFile")
    @ApiOperation("fdfs方法下载")
    public String downLoadFile() throws Exception {
        byte[] bytes = FastDFSUtils.download_file("group1", "M00/00/00/wKjngl_wTvWAIDq-AASE-wcdb3Y241.jpg");
        // 1.用日期命名文件
        Date now = new Date();
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        String fileName = dateFormat.format(now) + ".jpg";
        System.out.println(fileName);
        // 2.转为图片jpg格式
        //()中是下载到的地址
        FileOutputStream fileOutputStream = new FileOutputStream("C:\\Users\\LZY\\Downloads\\"+fileName);
        fileOutputStream.write(bytes);
        fileOutputStream.close();
        return "下载成功";
    }


    @GetMapping("/deleteFile")
    @ApiOperation("fdfs方法删除")
    public String deleteFile() throws Exception {
        FastDFSUtils.delete_file("group1", "M00/00/00/wKjngl_u13iAGTRcAACMjz-Fy6g372.jpg");
        return "删除成功";
    }
}

FastDFSUtils

public class FastDFSUtils {
    static {
        try {
            //ClientGloble 读配置文件
            ClassPathResource resource = new ClassPathResource("fdfs_client.conf");
            ClientGlobal.init(resource.getClassLoader().getResource("fdfs_client.conf").getPath());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * @param pic  文件二进制
     * @param name 文件名称
     * @param size 文件大小
     * @return group1/M00/00/01/wKjIgFWOYc6APpjAAAD-qk29i78248.jpg
     * @Description: 上传文件
     */
    public static String upload_file(byte[] pic, String name, long size) {
        String path = null;
        try {
            //客户端
            TrackerClient trackerClient = new TrackerClient();
            TrackerServer trackerServer = trackerClient.getConnection();
            StorageServer storageServer = null;
            StorageClient1 storageClient1 = new StorageClient1(trackerServer, storageServer);
            //文件11.jpg  根据文件名称得到文件后缀    jpg
            String ext = FilenameUtils.getExtension(name);
            NameValuePair[] meta_list = new NameValuePair[3];
            meta_list[0] = new NameValuePair("fileName", name);
            meta_list[1] = new NameValuePair("fileExt", ext);
            meta_list[2] = new NameValuePair("fileSize", String.valueOf(size));
            //  group1/M00/00/01/wKjIgFWOYc6APpjAAAD-qk29i78248.jpg
            path = storageClient1.upload_file1(pic, ext, meta_list);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return path;
    }

    /**
     * 文件下载
     * return:文件字节码
     * group_name:group1
     * romte_fileName:/opt/fastdfs/storage/files/data/00/00/wKjngl_u0YmANIh-AACMjz-Fy6g293.jpg
     *                                            M00/00/00/wKjng1_u5x6AShRRAACMjz-Fy6g127.jpg
     */
    public static byte[] download_file(String group_name, String romte_fileName) throws Exception {
        /** 创建存储客户端对象 */
        StorageClient storageClient = new StorageClient();
        /**
         * 文件下载
         */
        byte[] bytes = storageClient.download_file(group_name, romte_fileName);
        return bytes;
    }

    /**
     * 删除文件
     * return:0代表删除成功
     * group_name:group1
     * romte_fileName:M00/00/01/wKjIgFWOYc6APpjAAAD-qk29i78248.jpg
     */
    public static int delete_file(String group_name, String romte_fileName) throws Exception {
        /** 创建存储客户端对象 */
        StorageClient storageClient = new StorageClient();
        /** 删除文件 */
        int res = storageClient.delete_file(group_name, romte_fileName);
        return res;
    }
}

fdfs_client.conf

tracker_server=192.168.231.128:22122
tracker_server=192.168.231.129:22122

集群搭建步骤