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package test;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
@WebFilter(urlPatterns = {"/test"}, asyncSupported = true)
public class MyFilter implements Filter {
public void init(FilterConfig filterConfig) throws ServletException {
// Do nothing
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
String mode = request.getParameter("mode");
if (!"noarg".equals(mode) && !"original".equals(mode) &&
!"wrap".equals(mode)) {
throw new ServletException("Invalid mode");
}
if ("wrap".equals(mode)) {
chain.doFilter(new MyWrapper((HttpServletRequest) request),
response);
} else {
chain.doFilter(request, response);
}
AsyncContext ac = request.getAsyncContext();
if ("noarg".equals(mode) && !ac.hasOriginalRequestAndResponse()) {
throw new ServletException(
"AsycContext#hasOriginalRequestAndResponse returned false, " +
"should have returned true");
} else if ("original".equals(mode) &&
!ac.hasOriginalRequestAndResponse()) {
throw new ServletException(
"AsycContext#hasOriginalRequestAndResponse returned false, " +
"should have returned true");
} else if ("wrap".equals(mode) &&
ac.hasOriginalRequestAndResponse()) {
throw new ServletException(
"AsycContext#hasOriginalRequestAndResponse returned true, " +
"should have returned false");
}
ac.complete();
}
public void destroy() {
// Do nothing
}
private static class MyWrapper extends HttpServletRequestWrapper {
public MyWrapper(HttpServletRequest req) {
super(req);
}
}
}