Java background calls the HttpURLConnection class to simulate browser requests (typically used for interface calls)

project development will inevitably encounter external interface calls, niche today first contact with the class, followed by the API method to go again, if there is a wrong place, also please Doraemon, humbly!

1  Packagecom.cplatform.movie.back.test;2 3 ImportJava.io.BufferedReader;4 ImportJava.io.DataOutputStream;5 ImportJava.io.InputStreamReader;6 Importjava.net.HttpURLConnection;7 ImportJava.net.URL;8 ImportJava.net.URLEncoder;9 Ten  One  A  Public classHttpurlconnectiontest { -      Public Static FinalString Get_url = "Http://112.4.27.9/mall-back/if_user/store_list?storeId=32"; -      Public Static FinalString post_url = "Http://112.4.27.9/mall-back/if_user/store_list"; the      -     /** - * Interface Call GET -      */ +      Public Static voidHttpurlconectionget () { -         Try { +URL url =NewURL (Get_url);//Convert a string to a URL request address AHttpURLConnection connection = (httpurlconnection) url.openconnection ();//Open Connection atConnection.connect ();//Connection Session -             //Get input stream -BufferedReader br =NewBufferedReader (NewInputStreamReader (Connection.getinputstream ())); - String Line; -StringBuilder SB =NewStringBuilder (); -              while(line = Br.readline ())! =NULL) {//Loop Read Stream in Sb.append (line); -             } toBr.close ();//Close the stream +Connection.disconnect ();//Disconnect Connection - System.out.println (sb.tostring ()); the}Catch(Exception e) { * e.printstacktrace (); $SYSTEM.OUT.PRINTLN ("Failure!"));Panax Notoginseng         } -     } the      +     /** A * Interface Call POST the      */ +      Public Static voidHttpurlconnectionpost () { -         Try { $URL url =NewURL (post_url); $              -             //strong urlconnection connection with URL returned by the Open method to HttpURLConnection connection (identifies the remote object connection referenced by a URL) -HttpURLConnection connection = (httpurlconnection) url.openconnection ();//at this point the cnnection is just a connection object, pending connection the              -             //set the connection output stream to True, false by default (the POST request is passed implicitly as a stream parameter)WuyiConnection.setdooutput (true); the              -             //set the connection input stream to True WuConnection.setdoinput (true); -              About             //set the request mode to post $Connection.setrequestmethod ("POST"); -              -             //POST request cache set to False -Connection.setusecaches (false); A              +             //sets whether the HttpURLConnection instance automatically performs a redirect theConnection.setinstancefollowredirects (true); -              $             //set the various properties within the request header (the following is the type of the content set, set to the urlencoded encoded from parameter) the             //application/x-javascript text/xml->xml Data Application/x-javascript->json Object application/ x-www-form-urlencoded-> form Data theConnection.setrequestproperty ("Content-type", "application/x-www-form-urlencoded"); the              the             //Establish a connection (the request does not start until the Connection.getinputstream () method call is initiated, and the above parameters are set before this method) - Connection.connect (); in              the             //Create an input/output stream for outputting the parameters that are carried in the connection, (the output is what follows) theDataOutputStream dataout =NewDataOutputStream (Connection.getoutputstream ()); AboutString parm = "storeid=" + urlencoder.encode ("+", "utf-8");//The Urlencoder.encode () method encodes a string the              the             //output parameters to the connection the dataout.writebytes (parm); +              -             //refresh and close the stream when the output is complete the Dataout.flush ();BayiDataout.close ();//important and easy to ignore steps (close the stream, remember!) the              the System.out.println (Connection.getresponsecode ()); -              -             //Connection initiation request, processing server response (from connection fetch to input stream and wrapped as BufferedReader) theBufferedReader BF =NewBufferedReader (NewInputStreamReader (Connection.getinputstream ()));  the String Line; theStringBuilder SB =NewStringBuilder ();//used to store response data the              -             //Loop read stream, if not at the end the              while(line = Bf.readline ())! =NULL) { the Sb.append (Bf.readline ()); the             }94Bf.close ();//important and easy to ignore steps (close the stream, remember!) theConnection.disconnect ();//Destroy Connection the System.out.println (sb.tostring ()); the     98}Catch(Exception e) { About e.printstacktrace (); -         }101     }102     103     104      Public Static voidMain (string[] args) { the //httpurlconectionget ();106 httpurlconnectionpost ();107     }108}

Java background calls the HttpURLConnection class to simulate browser requests (typically used for interface calls)