aliyun oss 文件上传 java.net.SocketTimeoutException Read timed out 问题分析及解决

upload ClientException Read timed out 
com.aliyun.openservices.ClientException: Read timed out 
        at com.aliyun.common.utils.ExceptionFactory.createNetworkException(ExceptionFactory.java:19) 
        at com.aliyun.common.comm.DefaultServiceClient.sendRequestCore(DefaultServiceClient.java:59) 
        at com.aliyun.common.comm.ServiceClient.sendRequestImpl(ServiceClient.java:176) 
        at com.aliyun.common.comm.ServiceClient.sendRequest(ServiceClient.java:136) 
        at com.aliyun.openservices.oss.internal.OSSOperation.send(OSSOperation.java:60) 
        at com.aliyun.openservices.oss.internal.OSSObjectOperation.putObject(OSSObjectOperation.java:76) 
        at com.aliyun.openservices.oss.OSSClient.putObject(OSSClient.java:303) 
        at com.ccp.ossbridge.Upload.upload(Upload.java:119) 
        at com.ccp.ossbridge.Upload.upload(Upload.java:73) 
        at com.ccp.core.controller.UploadController.uploadFile(UploadController.java:56) 
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
        at java.lang.reflect.Method.invoke(Method.java:597) 
        at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213) 
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) 
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) 
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) 
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) 
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) 
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923) 
        at com.ccp.util.web.CcpBaseDispatcherServlet.doDispatch(CcpBaseDispatcherServlet.java:19) 
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) 
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) 
        at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) 
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:643) 
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) 
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) 
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) 
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861) 
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606) 
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 
        at java.lang.Thread.run(Thread.java:662) 
Caused by: java.net.SocketTimeoutException: Read timed out 
        at java.net.SocketInputStream.socketRead0(Native Method) 
        at java.net.SocketInputStream.read(SocketInputStream.java:129) 
        at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:149) 
        at org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:111) 
        at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:264) 
        at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:98) 
        at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:252) 
        at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:282) 
        at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:247) 
        at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:216) 
        at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:298) 
        at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125) 
        at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:647) 
        at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464) 
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820) 
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754) 
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732) 
        at com.aliyun.common.comm.DefaultServiceClient.sendRequestCore(DefaultServiceClient.java:57) 
        ... 41 more

    public String uploadImg(String bucketName,String key, InputStream resources, long length , String contentType) {

        ObjectMetadata objectMeta = new ObjectMetadata();
        objectMeta.setContentLength(length);
        objectMeta.setContentType(contentType);

        PutObjectResult putObject = OSSclient.putObject(bucketName, key, resources, objectMeta);
        return putObject.getETag();
    }

 public String saveImgFileToAliyun(File avatarFile){

        contentType = "image/jpeg";
        FileInputStream fileInputStream;
        try {
            fileInputStream = new FileInputStream(avatarFile);
            byte[] byteArrayFile = IOUtils.toByteArray(fileInputStream);
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayFile);
            String md5 = Md5Util.getMd5String(byteArrayFile);
            // check if file exists
            boolean isExists = checkIfFileExists("xxx", md5);
            if (isExists) {
                return md5;
            }else{
                String etag = uploadImg("xxx", md5,byteArrayInputStream,avatarFile.length(), contentType);
                if (etag.equalsIgnoreCase(md5)) {
                    return etag;
                }
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
    }

   public static  byte[] input2byte(InputStream inStream)
            throws IOException {
        ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
        byte[] buff = new byte[100];
        int rc = 0;
        while ((rc = inStream.read(buff, 0, 100)) > 0) {
            swapStream.write(buff, 0, rc);
        }
        byte[] in2b = swapStream.toByteArray();
        return in2b;
    }  

 当时由于调用 :byte[] byteArrayFile = IOUtils.toByteArray(fileInputStream); 
 拿到byte数组去算md5的值，所以就调用了  input2byte方法，红色标红部分把文件流 fileInputStream 的offset指针，指到了文件的末尾.

 因为我之前上传部分代码写得是： String etag = uploadImg("xxx", md5,fileInputStream,avatarFile.length(), contentType);
 文件流指针在末尾，所以当上传时再次读取这个流对象 fileInputStream的时候文件没有读取到内容，直接导致了 read time out!
后来，解决的方法是再次用byte 数组创建一个流对象，并传递到uploadImg 方法中：

  ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayFile);

这问题昨天困扰我到凌晨1点半，第二天，去公司问同事李航人称航哥之后解决。在这里感谢下航哥！