Shulou(Shulou.com)06/03 Report--

This article introduces the sample analysis of jdk's get and post requests, the content is very detailed, interested friends can refer to, I hope it can be helpful to you.

Post OutputStreamWriter out = null; HttpURLConnection conn = null; BufferedReader reader = null; StringBuilder response = new StringBuilder (); URL httpUrl = null; try {httpUrl = new URL ("http://www.baidu.com"); / / establish a connection conn = (HttpURLConnection) httpUrl.openConnection (); conn.setRequestMethod (" POST ") Conn.setRequestProperty ("Content-Type", "application/x-www-form-urlencoded"); conn.setUseCaches (false); / / set not to cache conn.setInstanceFollowRedirects (true); conn.setDoOutput (true); conn.setDoInput (true); conn.connect (); out = new OutputStreamWriter (conn.getOutputStream ()) Out.write (params); out.flush (); / / read response reader = new BufferedReader (new InputStreamReader (conn.getInputStream (); String lines; while ((lines = reader.readLine ())! = null) {lines = new String (lines.getBytes (), "utf-8") Response.append (lines);} System.out.println (response.toString ());} catch (Exception e) {e.printStackTrace ();} get/** * send GET request * * @ param url destination address * @ param parameters request parameter, Map type. * @ return remote response result * / public static String sendGet (String url, Map parameters) {StringBuilder result = new StringBuilder (); BufferedReader in = null;// read response input stream StringBuilder sbParams = new StringBuilder (); / / Storage parameter String params = "" / / Encoding request parameter try {/ / Encoding request parameter for (String name: parameters.keySet ()) {sbParams.append (name) .append ("=") .append (java.net.URLEncoder.encode (parameters.get (name), "UTF-8") .append ("&");} String requestParam = sbParams.toString () Params = requestParam.substring (0, requestParam.length ()-1); String fullUrl = url + "?" + params; logger.info ("get request:" + fullUrl); / / create URL object URL connURL = new URL (fullUrl); / / Open URL connection HttpURLConnection httpConn = (HttpURLConnection) connURL.openConnection () / / set common properties httpConn.setRequestProperty ("Accept", "* / *"); httpConn.setRequestProperty ("Connection", "Keep-Alive"); httpConn.setRequestProperty ("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)"); / / establish the actual connection httpConn.connect () / / Map headers = httpConn.getHeaderFields (); / / define the BufferedReader input stream to read the response of URL, and set the encoding mode in = new BufferedReader (new InputStreamReader (httpConn.getInputStream (), StandardCharsets.UTF_8)); String line / / read the returned content while ((line = in.readLine ())! = null) {result.append (line);} logger.info ("get request result:" + result.toString ());} catch (Exception e) {e.printStackTrace () } finally {try {if (in! = null) {in.close ();}} catch (IOException ex) {ex.printStackTrace ();}} return result.toString () } this is the end of the sample analysis of jdk's get and post requests. I hope the above can be of some help and learn more. If you think the article is good, you can share it for more people to see.

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