UnicodeBeanFilter.java

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package com.sun.faces.systest;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

import com.sun.faces.config.WebConfiguration;

/**
 * a filter which sets the character encoding of the request and response to the one set by the browsers
 * Accept-Encoding header.
 * This is mainly usful for the UnicodeTestCase where we have to check the response with different encodings.
 */
public class UnicodeBeanFilter implements Filter {

    private ServletContext ctx;
    public void init(FilterConfig filterConfig) throws ServletException {
        ctx = filterConfig.getServletContext();
    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        if (servletRequest instanceof HttpServletRequest) {
            HttpServletRequest hreq = (HttpServletRequest) servletRequest;
            String charsetEncoding = hreq.getHeader("Accept-Encoding");
            
            servletRequest.setCharacterEncoding(charsetEncoding);
            servletResponse.setCharacterEncoding(charsetEncoding);
            WebConfiguration config = WebConfiguration.getInstance(ctx);            
            config.overrideContextInitParameter(WebConfiguration.WebContextInitParameter.DisableUnicodeEscaping, servletRequest.getParameter("escape"));
        }
        filterChain.doFilter(servletRequest, servletResponse);
    }

    public void destroy() {
    }
}