Java实现图片上传至FastDFS入门教程

# connect timeout in seconds
# default value is 30s
connect_timeout=30

# network timeout in seconds
# default value is 30s
network_timeout=60

# the base path to store log files
base_path=/home/fastdfs

# tracker_server can ocur more than once, and tracker_server format is
#  "host:port", host can be hostname or ip address
tracker_server=192.168.200.128:22122
#tracker_server=192.168.101.4:22122

#standard log level as syslog, case insensitive, value list:
### emerg for emergency
### alert
### crit for critical
### error
### warn for warning
### notice
### info
### debug
log_level=info

# if use connection pool
# default value is false
# since V4.05
use_connection_pool = false

# connections whose the idle time exceeds this time will be closed
# unit: second
# default value is 3600
# since V4.05
connection_pool_max_idle_time = 3600

# if load FastDFS parameters from tracker server
# since V4.05
# default value is false
load_fdfs_parameters_from_tracker=false

# if use storage ID instead of IP address
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# default value is false
# since V4.05
use_storage_id = false

# specify storage ids filename, can use relative or absolute path
# same as tracker.conf
# valid only when load_fdfs_parameters_from_tracker is false
# since V4.05
storage_ids_filename = storage_ids.conf


#HTTP settings
http.tracker_server_port=80

#use "#include" directive to include HTTP other settiongs
##include http.conf

* 上传图片
 */
@Controller
@RequestMapping(value="/upload")
public class UploadController {

    @Autowired
    private UploadService uploadService;

    //上传图片品牌
    @RequestMapping(value="/uploadPic.do")
    public void uploadPic(@RequestParam(required=false) MultipartFile pic, HttpServletResponse response) throws Exception{

        //Java接口连接FastDFS
        String path = uploadService.uploadPic(pic.getBytes(), pic.getOriginalFilename(), pic.getSize());

        //path:group1/M00/00/01/wKjIgFWOYc6APpjAAAD-qk29i78248.jpg
        //url:http://192.168.200.128 (Linux 虚拟机的ip地址)
        String url = Constants.img_url + path;

        //Json工具类
        JSONObject jo = new JSONObject();
        jo.put("url", url);
        jo.put("path", path);

        //返回json
        response.setContentType("application/json;charset=UTF-8");
        response.getWriter().write(jo.toString());
    }
}

/*
 * 上传图片
 */
@Service("uploadService")
public class UploadServiceImpl implements UploadService {

    //上传
    public String uploadPic(byte[] pic, String name, long size){
        return FastDFSUtils.uploadPic(pic, name, size);
    }
}

/*
 *上传FastDFS图片
 */
public class FastDFSUtils {

    public static String uploadPic(byte[] pic, String name, long size){
        String path = null;
        //ClassPath下的文件Spring
        ClassPathResource resource = new ClassPathResource("fdfs_client.conf");
        try {
            ClientGlobal.init(resource.getClassLoader().getResource("fdfs_client.conf").getPath());
            //客服端
            TrackerClient trackerClient = new TrackerClient();
            TrackerServer trackerServer = trackerClient.getConnection();

            //连接小弟
            StorageClient1 storageClient1 = new StorageClient1();
            //扩展名, 获取扩展名, apach 下common包中已有公用方法.
            String extension = FilenameUtils.getExtension(name);
            //设置图片meta信息
            NameValuePair[] meta_list = new NameValuePair[3];
            meta_list[0] = new NameValuePair("filename", name);
            meta_list[1] = new NameValuePair("fileext", extension);
            meta_list[2] = new NameValuePair("filesize", String.valueOf(size));
            //上传且返回path
            path = storageClient1.upload_file1(pic, extension, meta_list);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return path;
    }
}

//上传多张图片
    @RequestMapping(value="/uploadPics.do")
    public @ResponseBody List<String> uploadPics(@RequestParam(required=false) MultipartFile[] pics, HttpServletResponse response) throws Exception{
        //多张图片的路径容器
        List<String> paths = new ArrayList<String>();

        for (MultipartFile pic : pics) {
            //Java接口连接FastDFS
            String path = uploadService.uploadPic(pic.getBytes(), pic.getOriginalFilename(), pic.getSize());
            paths.add(Constants.img_url+path);
        }

        return paths;
    }

@Service("uploadService")
public class UploadServiceImpl implements UploadService {

    //上传
    public String uploadPic(byte[] pic, String name, long size){
        return FastDFSUtils.uploadPic(pic, name, size);
    }
}