httpurlconnection

问题 I know this has been answered 10,000+ times. I have been reading and testing recommendations for over an hour without any progress. In the code below, the request body is always empty. URL url = new URL("[REMOVED]"); HttpURLConnection conn = (HttpURLConnection)url.openConnection(); conn.setRequestProperty("Authorization", "Bearer [REMOVED]"); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type","application/json"); conn.setDoOutput(true); conn.setDoInput(true);

问题 I'm new to Android development. Basically I need to submit data from 3 editTexts of my android app to a webpage and display the response returned. The webpage uses sessions with jSessionId. I don't have any idea how to post request to the webpage,get the cookie,store it and use it while sending the above said data by attaching the jSessionId to the url. I've been searching about this from past 2 days. but couldn't get anything to work. No idea where to start and how to. A detailed answer is

问题 URL url = new URL(urlStr); HttpURLConnection httpConn = (HttpURLConnection) url.openConnection(); The second line throws java.net.UnknownHostException . I was in a internal network in my company, and I hope I can help another one who's also in the same internal network with me to visit the website, and I just want to read content from the URL and give the content to the client side, is there any one help me on this? 回答1: Companys normally have a proxy server to the outside world. Try to

问题 I want to get all urls from given url and I want to check status of each url. For that I am using ExecutorService for multi-threading to check status of each and every url. Code of class which check response code for url is given below public class ConnectionTester implements Callable<Object> { private URL url; private Map<String,Integer> map; private static final Log LOGGER = LogFactoryUtil.getLog(ConnectionTester.class); public ConnectionTester(String url,Map<String,Integer> map) { try {

问题 i have code for file uploading to server its code working individual but this implemented in my app its goto exception all the time here is my code public int uploadFile(String sourceFileUri) { 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

问题 I am very new in android developing. In my app I have a login page, where I want to implement authentication functionality by POST method. I have a root address through which I have to login. I am giving a sample url, because it is confidential. "test.sample.com". my Protol address is https. then I need to combine "/login" at first. Just after authenticating with this login. I have more apis like "/api/users", "api/image". I can only access to this api if I authenticate with the login

问题 I'm posting data from android to wcf service but getting Bad Request error using HttpURLConnection. Android Code: `public User RegisterPost(Context context, User rUser) throws UnsupportedEncodingException{ String url = context.getResources().getString(R.string.SERVICE_URL)+ "Signup"; try { JSONObject userValue = new JSONObject(); JSONObject user = new JSONObject(); userValue.put("name", rUser.name); userValue.put("email", rUser.email); userValue.put("password", rUser.password); userValue.put(

问题 I'm making requests to a HTTP server sending JSON string. I used Gson for serializing and deserializing JSON objects. Today I observed this pretty weird behavior that I don't understand. I have: String jsonAsString = gson.toJson(jsonAsObject).replace("\"", "\\\""); System.out.println(jsonAsString); That outputs exactly this: {\"content\":\"Literal\",\"pos\":{\"left\":20,\"top\":20}} Now I'm using OutputStreamWriter obtained from HttpURLConnection to make HTTP, PUT request with JSON payload.

问题 I'm working on a project (use twitter api to search for a specific HashTag) when going into this site https://api.twitter.com/1.1/search/tweets.json?q=liverpool&count=20 to get the response {"errors":[{"code":215,"message":"Bad Authentication data."}]} after that I know that I should register my app in order to get Consumer Key,Consumer Secret,Access Token,Access Token Secret but I don't know how to add this tokens into my android code in order to this is my makehttpconnection method and I

问题 Although I know that StackOverflow has already setRequestProperty function of HttpURLConnection question, I really don't understand what this method does. I cannot "step into" it (F7) when debugging. I pressed Ctrl-B to view the method's body, but it only has the following code: public void setRequestProperty(String field, String newValue) { checkNotConnected(); if (field == null) { throw new NullPointerException("field == null"); } } and checkNotConnected : private void checkNotConnected() {