Java interface pass-through parameter (POST), receive data from interface (JSON)-----Record

1. Pass JSON-formatted data to the interface

Import Java, I-. BufferedReader; Import Java, I-. DataOutputStream; Import Java, I-. IOException; Import Java, I-. InputStreamReader; Import Java, I-. Unsupportedencodingexception; Import Java. Net. HttpURLConnection; Import Java. Net. Malformedurlexception; Import Java. Net. Url; Import Net. SF. JSON. Jsonobject;p Ublic class Appaddtest {public static final String Add_url ="Http://192.168.1.1:8080/*.controller/*.action"; public static void Appadd () {try {URL url = new URL (add_url); HttpURLConnection connection = (httpurlconnection) URL. OpenConnection (); Connection. Setdooutput (True); Connection. Setdoinput (True); Connection. Setrequestmethod ("POST"); Connection. Setusecaches (False); Connection. Setinstancefollowredirects (True); Connection. Setrequestproperty ("Connection","Keep-alive"); Connection. Setrequestproperty ("Content-type","Text/plain; Charset=utf-8 "); Connection. Connect (); Post Request DataOutputStreamout = new DataOutputStream (connection. Getoutputstream ()); Jsonobject obj = new Jsonobject (); String message = Java. Net. Urlencoder. Encode ("Hahaha","Utf-8"); Obj. Element ("Detail","DF"); Obj. Element ("TEXT1","ASD"); Obj. Element ("TEXT2", message);Out. Writebytes ("Data=" +obj. toString ()); System. Out. println ("Data=" +obj. toString ());Out. Flush ();Out. Close (); Read response BufferedReader reader = new BufferedReader (New InputStreamReader (connection. getInputStream ())); String lines; StringBuffer sb = new StringBuffer (""); while (lines = reader. ReadLine ()) = null) {lines = new String (lines. GetBytes (),"Utf-8") ; SB. Append (lines);} System. Out. println (SB); reader. Close (); connection. Disconnect ();} catch ( Malformedurlexception e) {E.printstacktrace ()} catch (Unsupportedencodingexception e) {e. Printstacktrace ();} catch (IOException e) {e. Printstacktrace ();}} public static void Main (string[] args ) {Appadd ();}}                 

2. Get JSON-formatted data from an interface

Import Java, I-. BufferedReader; Import Java, I-. InputStreamReader; Import Java, I-. PrintWriter; Import Java. Net. Url; Import Java. Net. URLConnection; Import Java. sql. Timestamp; Import Java. util. concurrent. Concurrenthashmap; Import Net. SF. JSON. Jsonarray; Import Net. SF. JSON. Jsonexception; Import Net. SF. JSON. Jsonobject; Import org. springframework. Web. Httprequesthandler;p Ublic class Javaurl {/** * @param args */public static void main (string[] args) {String URL ="Http://192.168.1.1:8080/*.controller.do/*.action"; System. Out. println ("URL:" +url); StringBuffer json = new StringBuffer (); try {//instance one URL and urlconnection url Oracle = new URL (URL); Open link URLConnection yc = Oracle. OpenConnection (); Input stream is passed into InputStreamReader and accepted by BufferedReader BufferedReaderin = new BufferedReader (New InputStreamReader (YC. getInputStream ())); String inputline = null; Always read to null and set the stream encoding to be UTF8 while (Inputline =Inch. ReadLine ())! = NULL) {JSON. Append (New String (inputline. GetBytes (),"GBK")); }//Remember to close the connectionInch. Close (); } catch (Exception e) {E. Printstacktrace (); } try {Jsonarray jn = Jsonarray. Fromobject (JSON. toString ()); if (Jn. Size () >0) {for (int i =0; I < jn.size (); i++) {Jsonobject Jo = (jsonobject) Jn. get (i); System. Out. println (Jo.get ( "id")) ; System.out.println (Jo .get ( "Fdname")) ;} System.out.println (JN) .out.println ( " Data size: "+jn.size ()) .printstacktrace () ; System.out.println ( " Connection timed out! ")              

Java interface Pass-through parameters (POST), receiving data (JSON) from an interface-----records