java如何通过uploadify上传到阿里云oss

通过ossclient上传。

try {
            OSSClient client = new OSSClient(END_POINT, ACCESS_ID, ACCESS_KEY);
            System.out.println("come to create bucket name");
            boolean exist = client.doesBucketExist(BUCKETNAME);  
            System.out.println("exist is: "+exist);
            if (!exist) {  
                client.createBucket(BUCKETNAME);
            }  
            BucketInfo bucketInfo = client.getBucketInfo(BUCKETNAME);
            System.out.println("================================bucketInfo: "+bucketInfo);
//          //设置bucket的访问权限，public-read-write权限
//          client.setBucketAcl(BUCKETNAME, CannedAccessControlList.PublicRead);

            ByteArrayOutputStream out = new ByteArrayOutputStream();// 先读入内存
            byte[] b = new byte[512];
            int len;
            while ((len = is.read(b)) != -1) {
                out.write(b, 0, len);
            }

            String key = MD5Util.getMD5String(out.toByteArray());

            ObjectMetadata objectMeta = new ObjectMetadata();
            objectMeta.setContentLength(out.size());
            // 可以在metadata中标记文件类型
            if (StringUtils.isEmpty(name)) {
                name = "temp.png";
            }
            if(name.toLowerCase().contains(".png")) {
                objectMeta.setContentType("image/png");
                key += ".png";
            }else if(name.toLowerCase().contains(".gif")) {
                objectMeta.setContentType("image/gif");
                key += ".gif";
            }else {
                objectMeta.setContentType("image/jpeg");
                key += ".jpg";
            }


//          InputStream in = new ByteArrayInputStream(out.toByteArray());

            PutObjectResult result = client.putObject(BUCKETNAME, key, is, objectMeta);
//          System.out.println("result: "+result);
//          System.out.println("key: "+key);
            client.shutdown();
            if(result!=null){
                return key;
            }
            return null;
        } catch (Exception e) {
            e.printStackTrace();
        } finally{
            if(is != null){
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

在阿里云搜索oss帮助文档，里面有介绍怎么用java后台调用oss接口：需要将阿里云提供的jar包导入你的项目中，然后将阿里云提供的代码放入你的项目中（代码中需要填入你在阿里云获得的key）