我已经设置了一个带有过滤器的嵌入式Jetty服务器,以便为每个请求添加一些标头。
MainHandler mainHandler = new MainHandler();
ServletContextHandler servletContextHandler = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
servletContextHandler.setContextPath("/application");
servletContextHandler.setHandler(mainHandler);
servletContextHandler.setAllowNullPathInfo(true);
servletContextHandler.addFilter(MyFilter.class, "/*", EnumSet.of(DispatcherType.REQUEST, DispatcherType.INCLUDE, DispatcherType.FORWARD));
Mainhandler是处理请求的类。 调用了过滤器的init()方法,但没有调用doFilter()方法,因此未应用我的过滤器。我用“ / application / something”进行了尝试。
有人可以帮我吗?
答案 0 :(得分:0)
请勿像这样混合使用Handlers
和ServletContextHandler's
。
这不是ServletContextHandler.setHandler(Handler)
的目的。
将MainHandler
从HttpServlet
扩展到ServletContextHandler.addServlet()
。
这是因为ServletContextHandler.setHandler()
用于管理ServletContext
之外的事物以及特定的请求链(例如会话管理,安全性管理,gzip编码管理,请求日志记录管理等),而不是用于实际处理请求并在该ServletContext
中产生响应。
答案 1 :(得分:0)
看看this官方文档示例:
package org.eclipse.jetty.embedded;
import java.io.IOException;
import javax.servlet.ServletException;
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 MinimalServlets
{
public static void main( String[] args ) throws Exception
{
// Create a basic jetty server object that will listen on port 8080.
// Note that if you set this to port 0 then a randomly available port
// will be assigned that you can either look in the logs for the port,
// or programmatically obtain it for use in test cases.
Server server = new Server(8080);
// The ServletHandler is a dead simple way to create a context handler
// that is backed by an instance of a Servlet.
// This handler then needs to be registered with the Server object.
ServletHandler handler = new ServletHandler();
server.setHandler(handler);
// Passing in the class for the Servlet allows jetty to instantiate an
// instance of that Servlet and mount it on a given context path.
// IMPORTANT:
// This is a raw Servlet, not a Servlet that has been configured
// through a web.xml @WebServlet annotation, or anything similar.
handler.addServletWithMapping(HelloServlet.class, "/*");
// Start things up!
server.start();
// The use of server.join() the will make the current thread join and
// wait until the server is done executing.
// See
// http://docs.oracle.com/javase/7/docs/api/java/lang/Thread.html#join()
server.join();
}
@SuppressWarnings("serial")
public static class HelloServlet extends HttpServlet
{
@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 from HelloServlet</h1>");
}
}
}