Mapping servlet to Hebrew (UTF-8) URL pattern

4
votes

I am on a windows OS. Using tomcat 8. IDE - Netbeans 8. JDK1.8.0_05

I am trying to specify a hebrew url pattern for certain servlets. (I have tried both by setting the Urlpattern attribute of the @webservlet annotation and by placing in the web.xml file).

The Hebrew mapping doesn't work. I check to see what the mappings look like while Tomcat is running (By using the MBeans tab of JConsole) and the Hebrew url is displayed as gibberish (specifically, question marks).

I have tried:

  • Adding -J-Dfile.encoding=UTF-8 to netbeans.conf file.
  • Changing windows Locale to Hebrew.
  • Using the URLEncoded version of the url in the pattern (this is also displayed as gibberish symbols in JConsole).
  • Also tried entering the URL in its encoded form into the address bar (eg: localhost:8080/test/%D7%A2%D7%91).
  • Checked the encoding of the Servlet files in notepad, they save as UTF-8 (after making the first change described in this list).
  • I have a filter on all url patterns (ie: "/*") that sets the character encoding of the request to UTF-8 (Also tried Apache's SetCharacterEncodingFilter)

Any suggestions on how I can map to a hebrew (UTF-8) url with tomcat, netbeans, java, windows setup?

Thanks.

2
javatomcatservletsnetbeansutf-8
Try to configure tomcat to understand UTF8 ( Defautl I think charset=ISO-8859-1) stackoverflow.com/questions/138948/… – simar
As well u can try to configure JVM for tomcat. Set -J-Dfile.encoding=UTF-8 in startup.bat – simar

2 Answers

0
votes

You need to configure your application server to encode request parameters in utf-8. Since you are using Tomcat, that would be setting URIEncoding="UTF-8" in your conf/server.xml file. Here's what it should look like: 

<Connector port="8080" maxHttpHeaderSize="8192"
 maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
 .......
 URIEncoding="UTF-8"
/>
-1
votes

Follow these steps:

  1. Write a Charset filter that will control all requests and responses:
    Reference: https://github.com/edendramis/freemarker-example/blob/master/src/main/java/com/edendramis/config/CharsetFilter.java

     package charsetFilter.classes;

 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 CharsetFilter implements Filter{
    private String encoding;

    public void init(FilterConfig config) throws ServletException{
            encoding = config.getInitParameter("requestEncoding");
            if( encoding==null ) encoding="UTF-8";
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain       next)
    throws IOException, ServletException{
        // Respect the client-specified character encoding
        // (see HTTP specification section 3.4.1)
            if(null == request.getCharacterEncoding())
            request.setCharacterEncoding(encoding);
            /**
        * Set the default response content type and encoding
        */
        response.setContentType("text/html; charset=UTF-8");
        response.setCharacterEncoding("UTF-8");
            next.doFilter(request, response);
    }

        public void destroy(){}
}`

  2. Add this filter to web.xml

     <filter>
        <filter-name>CharsetFilter</filter-name>
        <filter-class>charsetFilter.classes.CharsetFilter</filter-class>
            <init-param>
                <param-name>requestEncoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
</filter>

<filter-mapping>
        <filter-name>CharsetFilter</filter-name>
        <url-pattern>/*</url-pattern>
</filter-mapping>

  3. Write some HTML code e.g.:

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fi"> <head> <meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />

  1. Use the following in your servlet:

    request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=UTF-8");
response.setCharacterEncoding("UTF-8");

  2. For getting String:
    String input = new String(request.getParameter("foo").getBytes("iso-8859-1"), "utf-8"); String input = URLDecoder.decode(request.getParameter("keyWord"), "UTF-8"); System.out.println(input);

For URL:

String str = "$ome UTF-8 text £900";
String url = "http://your-domain.com/url?p=" + URLEncoder.encode(str, "UTF-8");

Cheers!!