fastdfs java客户端操作

https://github.com/happyfish100/fastdfs-client-java

到此处下载下来demo

这里采用maven的方式

mvn clean install

上传到本地仓库

mvn install:install-file -DgroupId=org.csource -DartifactId=fastdfs-client-java -Dversion=1.29-SNAPSHOT -Dpackaging=jar -Dfile=fastdfs-client-java-1.29-SNAPSHOT.jar

引入文件上传依赖

<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.4</version>
</dependency>

<dependency>
    <groupId>org.csource</groupId>
    <artifactId>fastdfs-client-java</artifactId>
    <version>1.29-SNAPSHOT</version>
</dependency>

项目结构

代码如下：

@RestController
public class AttachmentController {

    @RequestMapping("/upload")
    public String fdfsUpload(@RequestParam MultipartFile file){
        try {
            ClientGlobal.initByProperties("fdfs-client.properties");
            System.out.println("初始化信息："+ClientGlobal.configInfo());
            // 链接FastDFS服务器，创建tracker和Stroage
            TrackerClient trackerClient = new TrackerClient();
            TrackerServer trackerServer = trackerClient.getTrackerServer();
            StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
            StorageClient storageClient = new StorageClient(trackerServer,storageServer);
            String tempFileName = file.getOriginalFilename();
            String fileExtName = tempFileName.substring(tempFileName.lastIndexOf(".")+1);
            //上传文件,只需要文件字节数组，第二个参数是文件扩展名，第三个参数是元数据
            String[] strings = storageClient.upload_file(file.getBytes(), fileExtName, null);
            String result="";
            for (int i=0;i<strings.length;i++){

                if(i==strings.length-1){
                    result+=strings[i];
                }else{
                    result+=strings[i]+"/";
                }

            }
            System.out.println(result);

        } catch (Exception e) {
            e.printStackTrace();
        }

        return null;
    }

    /**
     * FastDFS实现文件下载
     *
     * @param filePath
     */
    @RequestMapping(value = "/download", method = RequestMethod.GET)
    @ResponseBody
    public void fdfsDownload(String filePath) {
        try {
            ClientGlobal.initByProperties("fdfs-client.properties");

            // 链接FastDFS服务器，创建tracker和Stroage
            TrackerClient trackerClient = new TrackerClient();
            TrackerServer trackerServer = trackerClient.getTrackerServer();
            StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
            StorageClient storageClient = new StorageClient(trackerServer,storageServer);
            byte[] b = storageClient.download_file("group1", filePath);
            if (b == null) {
                throw new IOException("文件" + filePath + "不存在");
            }

            String fileName = filePath.substring(filePath.lastIndexOf("/") + 1);
            FileOutputStream fileOutputStream = new FileOutputStream("E://" + fileName);
            IOUtils.write(b, fileOutputStream);
            fileOutputStream.close();
            System.out.println("文件下载成功");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * FastDFS实现文件删除
     *
     * @param filePath
     */
    @RequestMapping(value = "/delete", method = RequestMethod.GET)
    @ResponseBody
    public void fdfsDelete(String filePath) {
        try {
            ClientGlobal.initByProperties("fdfs-client.properties");

            TrackerClient trackerClient = new TrackerClient();
            TrackerServer trackerServer = trackerClient.getTrackerServer();
            StorageServer storageServer = trackerClient.getStoreStorage(trackerServer);
            StorageClient storageClient = new StorageClient(trackerServer,storageServer);
            int deleteResult = storageClient.delete_file("group1", filePath);

            if (deleteResult== 0) {
                System.out.println("文件删除成功");
            }else {
                System.out.println("文件删除失败");
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

亲测可用