您可能正在寻找
EnumSet.of(DispatcherType.REQUEST)，包括下面的完整示例：
import java.io.IOException;import java.util.EnumSet;import javax.servlet.DispatcherType;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.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.eclipse.jetty.server.Server;import org.eclipse.jetty.servlet.ServletHandler;public class JettyFilter { public static void main(final String[] args) throws Exception { Server server = new Server(8080); ServletHandler handler = new ServletHandler(); server.setHandler(handler); handler.addServletWithMapping(HelloServlet.class, "/*"); handler.addFilterWithMapping(HelloPrintingFilter.class, "/*", EnumSet.of(DispatcherType.REQUEST)); server.start(); server.join(); } public static class HelloServlet extends HttpServlet { private static final long serialVersionUID = 1L; @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); response.setStatus(HttpServletResponse.SC_OK); response.getWriter().println("<h1>Hello SimpleServlet</h1>"); } } public static class HelloPrintingFilter implements Filter { @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { System.out.print("hello from filter"); } @Override public void init(FilterConfig arg0) throws ServletException { } @Override public void destroy() {} }}
