Java uses post and get methods to submit HTTP requests Universal __java

Many APIs provide a Java Post,get way to invoke the interface that returns the result, and the following records are common for sending requests and receiving return parameters:

Package com.taray.test;
Import Java.io.BufferedReader;
Import java.io.IOException;
Import Java.io.InputStreamReader;
Import Java.io.PrintWriter;
Import Java.net.URL;
Import java.net.URLConnection;
Import java.util.List;

Import Java.util.Map; public class HttpRequest {/** * request to send a GET method to the specified URL * * @param URL * Send the requested URL * @pa
     RAM param * Request parameters, request parameters should be in the form of name1=value1&name2=value2. * @return The response result of the remote resource represented by the URL/public static string Sendget (string URL, string param) {String results = ""
        ;
        BufferedReader in = null;
            try {String urlnamestring = URL + '? ' + param;
            URL realurl = new URL (urlnamestring);
            The connection between open and URL urlconnection connection = Realurl.openconnection ();
            Sets the common request attribute Connection.setrequestproperty ("accept", "*/*");
            Connection.setrequestproperty ("Connection", "keep-alive"); Connection.setrequEstproperty ("User-agent", "mozilla/4.0" (compatible; MSIE 6.0; Windows NT 5.1;
            SV1) ");
            Establish the actual connection connection.connect ();
            Gets all response header fields Map<string, list<string>> Map = Connection.getheaderfields (); Iterate through all the response header fields for (String Key:map.keySet ()) {System.out.println (key +--->) + map.get (k
            EY));
                    }//define BufferedReader input stream to read URL response in = new BufferedReader (New InputStreamReader (
            Connection.getinputstream ()));
            String Line;
            while (line = In.readline ())!= null) {result + = line; Exception e {System.out.println ("Send Get request exception.
            "+ e);
        E.printstacktrace (); ///Use finally block to close the input stream finally {try {if (in!= null) {in
                . Close (); Catch (Exception E2)
            {E2.printstacktrace ();
    } return result; /** * Request * Sending the Post method to the specified URL * @param URL to send the requested URL * @param param request parameter, the request parameter should be name1=value1&name2=
     The form of value2. * The response result of the remote resource represented by the @return/public static string Sendpost (string url, string param) {PrintWriter out = nul
        L
        BufferedReader in = null;
        String result = "";
            try {URL realurl = new URL (URL);
            The connection between open and URL URLConnection conn = realurl.openconnection ();
            Sets the common request attribute Conn.setrequestproperty ("accept", "*/*");
            Conn.setrequestproperty ("Connection", "keep-alive"); Conn.setrequestproperty ("User-agent", "mozilla/4.0" (compatible; MSIE 6.0; Windows NT 5.1;
            SV1) ");
            The Send POST request must be set to the following two lines conn.setdooutput (true);
            Conn.setdoinput (TRUE); 1. Get URLConnection object corresponding to output stream out = new PrintwriteR (Conn.getoutputstream ()); 2. Chinese have garbled need to change printwriter to the following//out=new OutputStreamWriter (Conn.getoutputstream (), "UTF-8")//Send request parameter
            Number Out.print (param);
            Flush output Stream Buffer Out.flush ();
            Defines the response of the BufferedReader input stream to read the URL in = new BufferedReader (New InputStreamReader (Conn.getinputstream ()));
            String Line;
            while (line = In.readline ())!= null) {result + = line; Exception e {System.out.println ("send POST request exception.
            "+e);
        E.printstacktrace (); ///Use finally block to turn off output stream, input stream finally{try{if (out!=null) {out.
                Close ();
                } if (In!=null) {in.close ();
            } catch (IOException ex) {ex.printstacktrace (); } System.out.println ("Post push Result:"+result);
    return result; public static void Main (string[] args) {//Send GET request String s=httprequest.sendget ("http://local
        Host:6144/home/requeststring "," key=123&v=456 ");
        
        System.out.println (s);
        Send a POST request String sr=httprequest.sendpost ("http://localhost:6144/Home/RequestPostString", "key=123&v=456");
    System.out.println (SR); }
}