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12.27.2007 at 06:18AM PST, ID: 23044729
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Java, client and server communication via URLConnection (HTTP Post)

Asked by cvaguilar in Java Programming Language, Apache Web Server

Tags: urlconnection, java

I am coding a JSP (process.jsp) containing scriplets to accept an request in xml format (via http post) from another server.  I am currently simulating the client side by using jsp also (sendrequest.jsp).  Please see my codes attached to this.

Problem is, the xml data that I am supposed to send to process.jsp is duplicated.  Thus, causing the failure of processing.  I suspected that it is due to getting the input stream (under sendrequest.jsp).  

I tried removing that part but another problem arises, the java methods that I call on the server side is not invoked anymore. :(

Also, I noticed that when I modify my jsp pages, it uses the cached one in tomcat (tomcat_home/work/localhost...)  I have to remove it first to ensure that the changes I made is recognized.  How do I ensure that tomcat will get the new jsp when there's a change?

Any ideas???Start Free Trial 
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sendrequest.jsp (client)
 
<%@ page import="java.io.*,
                 java.util.*,
                 java.net.*,
                 java.net.HttpURLConnection.*"%>
 
 
<%
    String xmlData = "<?xml version=\"1.0\"?>"  +
	"<request application=\"test\">"  +
	"<target id=\"66819205613\"/>"  +
	"<service action=\"delete\" page=\"ABC|1|0\">"  +
	"ABC|1|0"  +
	"</service>"  +
	"<service action=\"add\" page=\"ABC|1|0\" label=\"Favorites\">"  +
	"ABC|1|0"  +
	"</service>"  +
	"</request>";
	
	// Create the URL and URL Connection
	java.net.URL programUrl = new java.net.URL("http://111.111.111.12:1980/Testing/process.jsp" );
	java.net.HttpURLConnection connection = (java.net.HttpURLConnection)programUrl.openConnection();
			
	((HttpURLConnection)connection).setRequestMethod("POST");
	connection.setDoOutput(true);
	//connection.setDoInput(true); //Only if you expect to read a response...
	connection.setUseCaches(false); //Highly recommended...
	connection.setRequestProperty("Content-Type", "text/xml");
	
	PrintWriter output = new PrintWriter(new OutputStreamWriter(connection.getOutputStream()));
	output.println(xmlData);
	//output.flush();
	output.close();	
 
	connection.connect();
	InputStream is = connection.getInputStream();
	InputStreamReader isr = new InputStreamReader(is);
	BufferedReader br = new BufferedReader(isr);
 
	String line = null;
 
	while ((line = br.readLine()) != null) {
   		out.println("TESTING");
	}
	
%>
 
 
process.jsp (server)
 
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    
<%@ page import="java.io.*, java.util.*"%>                 
                 
<%@ page import="com.test.interface.Beans"%>
<%
 
try{
	BufferedReader in = new BufferedReader(request.getReader());
	String inputLine;
	String xmlData = "";
 
	while ((inputLine = in.readLine()) != null) {     
		MyBean.get().processRequest(inputLine.concat(inputLine.trim())); 
	}
	
	
} catch (Exception e){
	PrintWriter responseWriter = response.getWriter();
	responseWriter.println("bad");
}
%>
[+][-]12.28.2007 at 03:09PM PST, ID: 20545964

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[+][-]12.28.2007 at 06:28PM PST, ID: 20546542

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[+][-]12.30.2007 at 09:00AM PST, ID: 20551310

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About this solution

Zones: Java Programming Language, Apache Web Server
Tags: urlconnection, java
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Solution Provided By: ysnky
Participating Experts: 1
Solution Grade: A
 
 
 
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