gistfile1.java

package br.com.foo.web.filters;

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;
import javax.servlet.http.HttpServletRequest;

public class EncodingFilter implements Filter {

	public void doFilter(ServletRequest req, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) req;
		response.setCharacterEncoding("UTF-8");
		request.setCharacterEncoding("UTF-8");

		if(request.getRequestURI().endsWith(".js")) {
			response.setContentType("text/application/x-javascript; charset=UTF-8");
		}

		filterChain.doFilter(request, response);
	}

	public void init(FilterConfig arg0) throws ServletException {
	}

	public void destroy() {
	}
}