httpurlconnection

I tried to upload a file to Google Cloud Storage using XML API. I have the right GoogleAccessId, expiry date and signature generated for each upload. The strange thing is that I can PUT file using Postman (application for Chrome), so I'm sure that the URL is ok. I just cannot PUT it using my Android Java program (it returns to me 403 error). The source code performing upload is here (it base on this one: https://cloud.google.com/storage/docs/access-control#Signing-Strings ): URL url; HttpURLConnection connection; try { url = new URL("http://google-testbucket.storage.googleapis.com/testdata.txt

when i run the code below, -in an Applet on JRE8, on the line con.getInputStream() it throws the exception -in an Applet on JRE7 or JRE6 it does not throws. -in a Desktop app on any JRE it does not throws. when i remove the lines starts with setRequestPropery , it does not throws the exception on any JRE. URLConnection con = new URL(adress).openConnection(); con.setDoOutput(true); con.setDoInput(true); con.setUseCaches(false); con.setRequestProperty("Content-Type", "application/octet-stream"); con.setRequestProperty("pragma:", "no-cache"); PrintStream ps = new PrintStream(con.getOutputStream()

I have seen this error will throw if called getInputStream before, but I have not in my code and I have checked the connected property is false, but still show this error. the code is as follow: private void testConnect() throws Exception{ HttpURLConnection con = null; OutputStream httpsend = null; String url = "https://xxxxx/goldapi/rs/checkPaymentService"; TrustManager[] trustall = new TrustManager[] { new X509TrustManager() { public java.security.cert.X509Certificate[] getAcceptedIssuers() { return new X509Certificate[0]; } public void checkClientTrusted( java.security.cert.X509Certificate[

Below code send the images to server successfully. But what I need is have to add an parameter like image description and image date to database. I dont know how to add parameter in HttURLconnection. String fileName = sourceFileUri; HttpURLConnection conn = null; DataOutputStream dos = null; String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary = "*****"; int bytesRead, bytesAvailable, bufferSize; byte[] buffer; int maxBufferSize = 1 * 1024 * 1024; File sourceFile = new File(sourceFileUri); FileInputStream fileInputStream = new FileInputStream(sourceFile_imagepath); URL url = new

I would like to send 1000 messages and retransmit only those that failed. Is there any way? Are there any methods to identify each failed message, such as a unique message ID? As you can see, there is no identifiable message ID. Is actually possible that only one message should be resent as in this case? Should I resend only this message or all the bulk? Should I use Exponential Backoff? Then, Where can I find example source? 来源： https://stackoverflow.com/questions/51737476/what-can-i-do-for-restransmiting-failed-message-from-my-web-app-server-java

It's Just Q&A. means just a Wiki Post. I searched a lot to make this happen. All are posting different kind of answers. I am successfully using this code now. So I'd like to share to all. Your HttpURLConnection must be inside Async Task (doInBackground). Steps: Setting up parameters in Map Function Building string in form: param=val&param2=val2 Setting up HttpUrlConnection OutputStream is used to attach values. Reading response from server using InputStream Set Parameters: Map<String,Object> params = new LinkedHashMap<>(); params.put("tag", "sda"); try { StringBuilder postData = new

I'm trying to build some sort of webservice on google apps. Now the problem is, I need to get data from a website (HTML Scraping). The request looks like : URL url = new URL(p_url); con = (HttpURLConnection) url.openConnection(); InputStreamReader in = new InputStreamReader(con.getInputStream()); BufferedReader reader = new BufferedReader(in); String result = ""; String line = ""; while((line = reader.readLine()) != null) { System.out.println(line); } return result; Now App Engine gives me the follwing exception at the 3th line: com.google.appengine.api.urlfetch.ResponseTooLargeException This