偶发性的Caused bycom.aliyun.oss.ClientExceptionConnectionTimeout

问题是偶发的，有的无从下手的感觉，感觉是网络问题。但OSS和ECS都是一个中心的。不知道如何优化了。求大神指点。


Caused by: com.aliyun.oss.ClientException: ConnectionTimeout
at com.aliyun.oss.common.utils.ExceptionFactory.createNetworkException(ExceptionFactory.java:68)
at com.aliyun.oss.common.comm.DefaultServiceClient.sendRequestCore(DefaultServiceClient.java:67)
at com.aliyun.oss.common.comm.ServiceClient.sendRequestImpl(ServiceClient.java:121)
at com.aliyun.oss.common.comm.ServiceClient.sendRequest(ServiceClient.java:67)
at com.aliyun.oss.internal.OSSOperation.send(OSSOperation.java:89)
at com.aliyun.oss.internal.OSSOperation.doOperation(OSSOperation.java:130)
at com.aliyun.oss.internal.OSSOperation.doOperation(OSSOperation.java:108)
at com.aliyun.oss.internal.OSSObjectOperation.writeObjectInternal(OSSObjectOperation.java:574)
at com.aliyun.oss.internal.OSSObjectOperation.putObject(OSSObjectOperation.java:119)
at com.aliyun.oss.OSSClient.putObject(OSSClient.java:412)
at com.aliyun.oss.OSSClient.putObject(OSSClient.java:399)
at cn.***.framework.web.AbstractOSSFileUploadService.upload(AbstractOSSFileUploadService.java:321)
at cn.***.framework.web.AbstractOSSFileUploadService.upload(AbstractOSSFileUploadService.java:494)
at com.***.doctor.service.DoctorImage.uploadHeadIcon(DoctorImage.java:178)
... 36 more
Caused by: org.apache.http.conn.ConnectTimeoutException: Connect to ***.oss-cn-beijing.aliyuncs.com:80 timed out
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:882)
at org.apache.http.impl.client.Closeable(和谐)HttpClient.execute(Closeable(和谐)HttpClient.java:82)
at org.apache.http.impl.client.Closeable(和谐)HttpClient.execute(Closeable(和谐)HttpClient.java:107)
at org.apache.http.impl.client.Closeable(和谐)HttpClient.execute(Closeable(和谐)HttpClient.java:55)
at com.aliyun.oss.common.comm.DefaultServiceClient.sendRequestCore(DefaultServiceClient.java:64)
... 48 more
涉及公司的关键词统一用***代替了
上传用的代码。
protected SystemUploadFile upload(String fileName) {
        SystemUploadFile suf;
        try {
            //获取表单文件字段的数据
            Part part = ThreadLocalParameter.getThreadLocal().getRequest().getPart(formField);
            if (part == null) {
                return null;
            }
            //获取提交文件的名称
            String uploadFileName = part.getSubmittedFileName();
            if (uploadFileName == null || uploadFileName.isEmpty()) {
                return null;
            }
            if (fileName.indexOf("/") == 0) {
                fileName = fileName.replaceFirst("/", "");
            }

            if (uploadFileName.contains(".")) {
                fileName += uploadFileName.substring(uploadFileName.lastIndexOf("."));
            }
            //拼接prefix
            String filePath = oss_prefix + "/" + fileName;
            InputStream in;
            in = null;

            try {

                in = part.getInputStream();
                // 创建上传Object的Metadata
                ObjectMetadata meta = new ObjectMetadata();
                // 必须设置ContentLength
                meta.setContentLength(part.getSize());
//                if(client==null){
//                    client = new OSSClient(oss_endpoint, access_id, access_key);
//                }
                // 上传Object.
                PutObjectResult result = getClient().putObject(bucket, filePath, in, meta);
            } catch (IOException ex) {
                Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, "上传文件失败", ex);
                return null;
            } finally {
                if (in != null) {
                    in.close();
                }
            }
            suf = new SystemUploadFile();
            suf.setFilePath(fileName);
            suf.setFileSize(part.getSize());
            suf.setFileType(part.getContentType());
            suf.setUploadTimeStamp(new Date());
        } catch (IOException | ServletException ex) {
            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, "上传文件失败", ex);
            return null;
        }
        return suf;
    }