urlconnection

问题 This question already has an answer here: How to upload files to server using JSP/Servlet? 12 answers Is there any convenient way to read and parse data from incoming request. E.g client initiate post request URLConnection connection = new URL(url).openConnection(); connection.setDoOutput(true); connection.setRequestProperty(\"Content-Type\", \"multipart/form-data; boundary=\" + boundary); PrintWriter writer = null; try { OutputStream output = connection.getOutputStream(); writer = new

问题 Use of java.net.URLConnection is asked about pretty often here, and the Oracle tutorial is too concise about it. That tutorial basically only shows how to fire a GET request and read the response. It doesn\'t explain anywhere how to use it to among others perform a POST request, set request headers, read response headers, deal with cookies, submit a HTML form, upload a file, etc. So, how can I use java.net.URLConnection to fire and handle \"advanced\" HTTP requests? 回答1: First a disclaimer