11/30/2022 0 Comments Intraweb redirect 404As I read each line of output from the URL, I add it to my StringBuilder, then convert the StringBuilder to a String when the method returns.Īs mentioned, the setDoOutput method is optional.I read the data as usual, using an InputStreamReader and BufferedReader.I set the read timeout to 15 seconds, then ope the connection.(Optional: The setDoOutput tells the object that we will be writing output to this URL.).It sets the request method to GET (as opposed to something else, like POST).It opens a connection, then casts that connection to a HttpURLConnection.The doHttpUrlConnectionAction method works like this:.I define a URL, pass that URL to the doHttpUrlConnectionAction method, then print the String output received from that method.The main method is called, and it creates a new instance of this class.Here’s a quick walk-through of how this Java HttpUrlConnection code works: close the reader this can throw an exception too, soĭiscussion: Java HttpUrlConnection example While ((line = reader.readLine()) != null) Reader = new BufferedReader(new InputStreamReader(connection.getInputStream())) uncomment this if you want to write output to this url HttpURLConnection connection = (HttpURLConnection) url.openConnection() Private String doHttpUrlConnectionAction(String desiredUrl) * in this method, and just return a high level Exception from here. * I tried to hide some of the ugliness of the exception-handling deal with the exception in your "controller" String results = doHttpUrlConnectionAction(myUrl) myUrl = URLEncoder.encode(myUrl, "UTF-8") String myUrl = " // if your url can contain weird characters you will want to * HttpURLConnection class (in combination with an InputStreamReader and BufferedReader). * A complete Java class that shows how to open a URL, then read data (text) from that URL, This class also demonstrates how to properly encode your URL using the encode method of the URLEncoder class: here’s the source code for a complete Java class that demonstrates how to open a URL and then read from it, using the HttpURLConnection class. As the Javadoc states, this class is a subclass of the URLConnection class that “provides support for HTTP-specific features.” A Java HttpURLConnection example In this example I’ll show how to open a URL using the Java HttpURLConnection class. On this blog I’ve shown a variety of ways to use Java to open a URL connection, and then read data from that connection, including my How to open and read from a URL with the Java URL and URLConnection classes tutorial.
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