?
Solved

Retriving request parameters in different languages in servlets

Posted on 2008-10-04
7
Medium Priority
?
561 Views
Last Modified: 2013-11-24
Hi,

I am building HTTP Interface for bulk sms messaging system using servlets as primary technology. It will receive the sms requests from clients and forward it to the Telecome bulk sms gateway. At present the servlets are able to receive request in english languages. But when i try to send parameters in other languages like hindi, marathi, arabic, chinese, etc. the servlet receives the parameters but it comes as ???? while debugging. So what is the problem here?

Code:
String accountName = request.getParameter("accountName");
String password = request.getParameter("password");

Regards,
Nirav Pradhan
0
Comment
Question by:Nirav_Pradhan
  • 3
  • 2
6 Comments
 
LVL 5

Expert Comment

by:libin_v
ID: 22643829
Use getCharacterEncoding to convert
public String getText(HttpServletRequest request)
{
  String value = request.getParameter("mytext");
 
  try{
    value = new String(value.getBytes(), request.getCharacterEncoding());
  }catch(java.io.UnsupportedEncodingException ex){
    System.err.println(ex);
  }
 
  return value;
}

Open in new window

0
 

Author Comment

by:Nirav_Pradhan
ID: 22643887
I made the changes as you said, but the got the following error which is attachted.




String accountName = new String(request.getParameter("accountName").getBytes(),request.getCharacterEncoding());
String password =  new String(request.getParameter("password").getBytes(),request.getCharacterEncoding());
 
the error code:
 
HTTP Status 500 - 
 
--------------------------------------------------------------------------------
 
type Exception report
 
message 
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception 
 
java.lang.NullPointerException: charsetName
	java.lang.String.<init>(String.java:442)
	java.lang.String.<init>(String.java:516)
	com.maaxsms.servlets.LoginServlet.processRequest(LoginServlet.java:40)
	com.maaxsms.servlets.LoginServlet.doGet(LoginServlet.java:85)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
 
 
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.
 
 
--------------------------------------------------------------------------------
 
Apache Tomcat/6.0.16

Open in new window

0
 
LVL 5

Expert Comment

by:libin_v
ID: 22645255
if(request.getCharacterEncoding() == null)
   request.setCharacterEncoding("UTF-8");

Try this set a default CharEncoding
0
The new generation of project management tools

With monday.com’s project management tool, you can see what everyone on your team is working in a single glance. Its intuitive dashboards are customizable, so you can create systems that work for you.

 

Author Comment

by:Nirav_Pradhan
ID: 22645590
I tried the suggestion, this time there is no error but the parameter's value is still coming as ????.


if(request.getCharacterEncoding() == null)
    request.setCharacterEncoding("UTF-8");
 
String accountName = new String(request.getParameter("accountName").getBytes(),request.getCharacterEncoding());
String password =  new String(request.getParameter("password").getBytes(),request.getCharacterEncoding());

Open in new window

0
 
LVL 1

Accepted Solution

by:
rainmaker2k earned 2000 total points
ID: 22649759
The getBytes method can also take a parameter from which encoding you're starting. As far as I know all browsers send ISO-8859-1 as their default encoding.

So, what you need to for each of those parameters is something like this:
new String(request.getParameter("accountName").getBytes("ISO-8859-1"), "UTF-8")

You might also want to play around with the UTF-8 parameter. Depending on the type of language/characterset, this might need to change.
0
 

Author Closing Comment

by:Nirav_Pradhan
ID: 31503142
Thank you very much. The last solution which you provided, it worked.
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
The viewer will learn how to implement Singleton Design Pattern in Java.
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Suggested Courses
Course of the Month5 days, 22 hours left to enroll

588 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question