Unicode help...

Question

Hi,
Im having some problems with unicode and did all the necessary things shown below:
1. Add <%@page contentType="text/html" pageEncoding="UTF-8"%> to JSP
2. Set response.setContentType("text/xml;charset=UTF-8");
3. As im using httpUrlConnection to connect, i also add URIEncoding to my server.xml.
4. I also set unicodetStr = new String(str.getBytes("ISO-8859-1"),"UTF-8");
The problem is that when I entered chinese words in my JSP, the values become ??? and it it being store in my database. After I restart my tomcat, the chinese words are able to store correct(in chinese) in my database. When I try again the next day, the same data become ??? again. Does anyone know how can i solve this?
Im using tomcat 5.5.20 on linux and my database is orcacle.
Grace

Answer 1

You look at the filter :
package com.lin.ums.web;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class CharacterEncodingFilter implements Filter
private FilterConfig config;
public void init(FilterConfig config) throws ServletException
this.config = config;
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
String encoding = config.getInitParameter("encoding");
if(encoding == null)
encoding = "gbk";
request.setCharacterEncoding(encoding);
response.setCharacterEncoding(encoding);
chain.doFilter(request, response);
public void destroy()
Then you add in web.xml:
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>com.lin.ums.web.CharacterEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>