首先要轉一個FastDFS,這個很難裝。一般由運維人員安裝。

git項目fastdfs-client-java由happy fish開發的，down下來後import到項目中maven install到本地倉庫即可

package com.common.utils;

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

/*
 * 工具類
 */
public class FastDFSClient {

    private TrackerClient trackerClient = null;
    private TrackerServer trackerServer = null;
    private StorageServer storageServer = null;
    private StorageClient1 storageClient = null
 
;
    
    public FastDFSClient(String conf) throws Exception {
        if (conf.contains("classpath:")) {
            conf = conf.replace("classpath:", this.getClass().getResource("/").getPath());
        }
        ClientGlobal.init(conf);
        trackerClient = new TrackerClient();
        trackerServer 
 
= trackerClient.getConnection();
        storageServer = null;
        storageClient = new StorageClient1(trackerServer, storageServer);
    }
    
    /**
     * 上傳文件方法
     * <p>Title: uploadFile</p>
     * <p>Description: </p>
     * @param fileName 文件全路徑
     * @param extName 文件擴展名，不包含（.）
     * @param metas 文件擴展信息
     * @return
     * @throws Exception
     */
    public String uploadFile(String fileName, String extName, NameValuePair[] metas) throws Exception {
        String result = storageClient.upload_file1(fileName, extName, metas);
        return result;
    }
    
    public String uploadFile(String fileName) throws Exception {
        return uploadFile(fileName, null, null);
    }
    
    public String uploadFile(String fileName, String extName) throws Exception {
        return uploadFile(fileName, extName, null);
    }
    
    /**
     * 上傳文件方法
     * <p>Title: uploadFile</p>
     * <p>Description: </p>
     * @param fileContent 文件的內容，字節數組
     * @param extName 文件擴展名
     * @param metas 文件擴展信息
     * @return
     * @throws Exception
     */
    public String uploadFile(byte[] fileContent, String extName, NameValuePair[] metas) throws Exception {
        
        String result = storageClient.upload_file1(fileContent, extName, metas);
        return result;
    }
    
    public String uploadFile(byte[] fileContent) throws Exception {
        return uploadFile(fileContent, null, null);
    }
    
    public String uploadFile(byte[] fileContent, String extName) throws Exception {
        return uploadFile(fileContent, extName, null);
    }
}


/**
 * 測試
 */
public class FastDFSTest {
    @Test
    public void testFileUpload() throws Exception {
        // 1、加載配置文件，配置文件中的內容就是tracker服務的地址。
        ClientGlobal.init("D:\\Programmer_QY\\eclipse-jee-mars-2-win32-x86_64\\workspace\\e3-manager-web\\src\\main\\resources\\conf\\client.conf");
        // 2、創建一個TrackerClient對象。直接new一個。
        TrackerClient trackerClient = new TrackerClient();
        // 3、使用TrackerClient對象創建連接，獲得一個TrackerServer對象。
        TrackerServer trackerServer = trackerClient.getConnection();
        // 4、創建一個StorageServer的引用，值為null
        StorageServer storageServer = null;
        // 5、創建一個StorageClient對象，需要兩個參數TrackerServer對象、StorageServer的引用
        StorageClient storageClient = new StorageClient(trackerServer, storageServer);
        // 6、使用StorageClient對象上傳圖片。
        // 擴展名不帶“.”
        String[] strings = storageClient.upload_file("G:\\秋雨\\相機\\小豬\\QQ圖片20160501233001.jpg", "jpg",
                null);
        // 7、返回數組。包含組名和圖片的路徑。
        for (String string : strings) {
            System.out.println(string);
        }
    }
    @Test
    public void textFastDfsClient() throws Exception{
        FastDFSClient fastDFSClient = new FastDFSClient("D:\\Programmer_QY\\eclipse-jee-mars-2-win32-x86_64\\workspace\\e3-manager-web\\src\\main\\resources\\conf\\client.conf");
        String result = fastDFSClient.uploadFile("G:\\秋雨\\相機\\頭像\\3226-150PR30508-52.jpg");
        System.out.println(result);
    }
}

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