Java sends get,post requests

There are comments in the method: Refer to the csdn inside, the project time to change their own

 Packagecom.bst.express;ImportJava.io.BufferedReader;ImportJava.io.DataOutputStream;Importjava.io.IOException;ImportJava.io.InputStreamReader;Importjava.net.HttpURLConnection;Importjava.net.MalformedURLException;ImportJava.net.URL;Importorg.junit.Test; Public classHttptools { Public Static FinalString Get_url = "http://192.168.1.61";  Public Static FinalString post_url = "Http://localhost:8080/wayBill/common/api"; /*** GET Request*/@Test Public  voidHttpurlconectionget () {Try{URL URL=NewURL (Get_url);//The string is converted to the request addressHttpURLConnection connection = (httpurlconnection) url.openconnection ();//Open ConnectionConnection.connect ();//Connection SessionBufferedReader br =NewBufferedReader (NewInputStreamReader (Connection.getinputstream (), "UTF-8"));//The response result is an input streamString Line; StringBuilder SB=NewStringBuilder ();//results of the output             while(line = Br.readline ())! =NULL) {sb.append (line);            } br.close (); Connection.disconnect ();//Disconnect ConnectionSystem.out.println (sb.tostring ()); } Catch(Exception e) {e.printstacktrace (); System.out.println ("Request failed:" +e.getmessage ()); }    }    /*** POST Request*/@Test Public  voidHttpurlconnectionpost () {Try{URL URL=NewURL (Post_url); //1. URLConnection The URL returned by the Open method//connection strong to HttpURLConnection connection. At this point the cnnection is just a connection object, pending connectionHttpURLConnection connection =(HttpURLConnection) url.openconnection (); //2. Set the connection output stream to True, default False (the POST request is a stream implicitly passed parameter)Connection.setdooutput (true); //3. Set the connection input stream to TrueConnection.setdoinput (true); //4. Set the request mode to postConnection.setrequestmethod ("POST"); //5.post Request Cache set to FalseConnection.setusecaches (false); /** 6. Set the various properties within the request header (the following is the type of the set content, set to the urlencoded encoded from parameter) * Application/xml:xml data, application/ Json:json Object * text/html: Form data*/Connection.setrequestproperty ("Content-type", "Application/json;charset=utf-8"); //7. 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 (); //8. Create an input/output stream for outputting the parameters that are carried in the connection, (the output is the following)DataOutputStream dataout =NewDataOutputStream (Connection.getoutputstream ()); //9. Enter the parameter: JSON formatString parm = "{\" pubrequest\ ": {\" token\ ": \" 121212\ ", \" method\ ": \" auth.login\ "," + "\" version\ ": \" 1.0\ " , \ "encrytype\": \ "6\"},\ "body\": {\ "account\": \ "18584084561\", "+" \ "password\": \ "123456\"}} "; //10. Output parameters to the connectiondataout.writebytes (parm); //refresh and close the stream when the output is completeDataout.flush (); Dataout.close (); //important and easy to ignore steps (close the stream, remember!) //System.out.println ("Response Code:" +connection.getresponsecode ()); //Connection initiation request, processing server response (from connection fetch to input stream and wrapped as BufferedReader)BufferedReader BF =NewBufferedReader (NewInputStreamReader (Connection.getinputstream (), "UTF-8"));            String Line; StringBuilder SB=NewStringBuilder ();//used to store response data//Loop read stream, if not at the end             while(line = Bf.readline ())! =NULL) {sb.append (line);//to wrap: sb.append (line). Append (System.getproperty ("Line.separator")); } bf.close (); //important and easy to ignore steps (close the stream, remember!)Connection.disconnect ();//Destroy ConnectionSystem.out.println (sb.tostring ()); } Catch(Exception e) {e.printstacktrace (); System.out.println ("Request failed:" +e.getmessage ()); }    }}

Java sends get,post requests