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package com.sun.faces.test.servlet30.ajax.filter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.lang.reflect.Constructor;
import javax.faces.context.PartialResponseWriter;
import javax.faces.context.ResponseWriter;
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.HttpServletResponse;
public class BeforeFilter implements Filter {
private FilterConfig filterConfig = null;
public BeforeFilter() {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
try {
HttpServletResponse resp = (HttpServletResponse) response;
PrintWriter pw = resp.getWriter();
ResponseWriter responseWriter;
Class htmlResponseWriterClass = Class.forName("com.sun.faces.renderkit.html_basic.HtmlResponseWriter");
Constructor ctor = htmlResponseWriterClass.getConstructor(Writer.class, String.class, String.class);
responseWriter = (ResponseWriter) ctor.newInstance(pw, "text/xml", "UTF-8");
PartialResponseWriter partialResponseWriter = new PartialResponseWriter(responseWriter);
// partialResponseWriter.writePreamble("<?xml version='1.0' encoding='UTF-8'?>\n");
partialResponseWriter.startDocument();
partialResponseWriter.startUpdate("foo");
partialResponseWriter.endUpdate();
partialResponseWriter.endDocument();
partialResponseWriter.close();
} catch (Exception t) {
HttpServletResponse resp = (HttpServletResponse) response;
PrintWriter pw = resp.getWriter();
try {
pw.print("<html><body><p id=\"result\">FAILURE</p>");
int indentLevel = 0;
String indent;
Throwable cause = t;
do {
StringBuilder indentBuilder = new StringBuilder();
for (int i = 0; i < indentLevel; i++) {
indentBuilder.append(" ");
}
indent = indentBuilder.toString();
pw.print("<p>" + indent + " Exception: " + cause.getClass().getName() + "</p>");
pw.print("<p>" + indent + " Exception Message: " + cause.getLocalizedMessage() + "</p>");
pw.print("<code><pre>");
cause.printStackTrace(pw);
pw.print("</pre></code>");
} while (null != (cause = cause.getCause()));
pw.print("</body></html>");
resp.setStatus(200);
pw.close();
} catch (Exception e) {
}
}
}
public void destroy() {
}
public void init(FilterConfig filterConfig) {
this.filterConfig = filterConfig;
}
}