给我fastdfsService的代码

由于我不知道你具体需要的是哪份代码，以下是FastDFS的Java客户端API代码示例：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.csource.common.NameValuePair;
import org.csource.fastdfs.ClientGlobal;
import org.csource.fastdfs.FileInfo;
import org.csource.fastdfs.StorageClient1;
import org.csource.fastdfs.TrackerClient;
import org.csource.fastdfs.TrackerServer;

public class FastDFSService {
    private static final String CONF_FILENAME = "fastdfs_client.conf"; // 配置文件名

    static {
        try {
            // 初始化FastDFS客户端配置
            ClientGlobal.init(CONF_FILENAME);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 上传文件
     * 
     * @param file 文件对象
     * @return 返回文件ID
     * @throws IOException
     */
    public static String uploadFile(File file) throws IOException {
        byte[] fileBuff = getFileBuffer(file);
        String fileExtName = getFileExtName(file.getName());
        NameValuePair[] metaList = new NameValuePair[] { new NameValuePair("fileName", file.getName()) };

        TrackerClient tracker = new TrackerClient();
        TrackerServer trackerServer = tracker.getConnection();
        StorageClient1 client = new StorageClient1(trackerServer, null);
        try {
            String fileId = client.upload_file1(fileBuff, fileExtName, metaList);
            return fileId;
        } catch (Exception e) {
            e.printStackTrace();
            throw new IOException("upload file to fastdfs failed.");
        } finally {
            trackerServer.close();
        }
    }

    /**
     * 下载文件
     * 
     * @param fileId 文件ID
     * @return 返回文件内容字节数组
     * @throws IOException
     */
    public static byte[] downloadFile(String fileId) throws IOException {
        TrackerClient tracker = new TrackerClient();
        TrackerServer trackerServer = tracker.getConnection();
        StorageClient1 client = new StorageClient1(trackerServer, null);
        try {
            return client.download_file1(fileId);
        } catch (Exception e) {
            e.printStackTrace();
            throw new IOException("download file from fastdfs failed.");
        } finally {
            trackerServer.close();
        }
    }

    /**
     * 删除文件
     * 
     * @param fileId 文件ID
     * @throws IOException
     */
    public static void deleteFile(String fileId) throws IOException {
        TrackerClient tracker = new TrackerClient();
        TrackerServer trackerServer = tracker.getConnection();
        StorageClient1 client = new StorageClient1(trackerServer, null);
        try {
            client.delete_file1(fileId);
        } catch (Exception e) {
            e.printStackTrace();
            throw new IOException("delete file from fastdfs failed.");
        } finally {
            trackerServer.close();
        }
    }

    /**
     * 获取文件信息
     * 
     * @param fileId 文件ID
     * @return 返回文件信息
     * @throws IOException
     */
    public static FileInfo getFileInfo(String fileId) throws IOException {
        TrackerClient tracker = new TrackerClient();
        TrackerServer trackerServer = tracker.getConnection();
        StorageClient1 client = new StorageClient1(trackerServer, null);
        try {
            return client.query_file_info1(fileId);
        } catch (Exception e) {
            e.printStackTrace();
            throw new IOException("get file info from fastdfs failed.");
        } finally {
            trackerServer.close();
        }
    }

    /**
     * 获取文件内容字节数组
     * 
     * @param file 文件对象
     * @return 返回文件内容字节数组
     * @throws IOException
     */
    private static byte[] getFileBuffer(File file) throws IOException {
        InputStream in = new FileInputStream(file);
        int len = in.available();
        byte[] fileBuff = new byte[len];
        in.read(fileBuff);
        in.close();
        return fileBuff;
    }

    /**
     * 获取文件扩展名
     * 
     * @param fileName 文件名
     * @return 返回文件扩展名
     */
    private static String getFileExtName(String fileName) {
        if (fileName.contains(".")) {
            return fileName.substring(fileName.lastIndexOf(".") + 1);
        } else {
            return "";
        }
    }
}

使用示例：

public static void main(String[] args) {
    try {
        // 上传文件
        File file = new File("test.jpg");
        String fileId = FastDFSService.uploadFile(file);
        System.out.println("fileId: " + fileId);

        // 获取文件信息
        FileInfo fileInfo = FastDFSService.getFileInfo(fileId);
        System.out.println("fileInfo: " + fileInfo);

        // 下载文件
        byte[] fileContent = FastDFSService.downloadFile(fileId);
        System.out.println("fileContent length: " + fileContent.length);

        // 删除文件
        FastDFSService.deleteFile(fileId);

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