Question

喜我正在尝试用jetty服务器建立一个网站。我想打开jsp页面作为起始页面，但我不能让它从那里工作。我试过这个例子。我将war文件放在webapps目录中，我得到了第一个jsp页面（index.jsp）。但当我试图激活表单时，我收到此错误消息：

HTTP错误404

访问/ GrettingServlet时出现问题。原因是：

NOT_FOUND

这是文件：

的index.jsp

<%@ page language="java" contentType="text/html; charset=windows-1255"
pageEncoding="windows-1255"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"   "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1255">
<title>Insert title here</title>
</head>
<body>
<form action="GrettingServlet" method="POST">
    First Name: <input type="text" name="firstName" size="20"><br>
    Last Name: <input type="text" name="lastName" size="20">
    <br><br>
    <input type="submit" value="Submit">
</form> 

</body>
</html>

GrettingServlet.java：

package main;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class GrettingServlet
 */

public class GrettingServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

/**
 * @see HttpServlet#HttpServlet()
 */
public GrettingServlet() {
    super();
    // TODO Auto-generated constructor stub
}

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
}

/**
 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 */
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();
    String firstName = request.getParameter("firstName").toString();
    String lastName = request.getParameter("lastName").toString();

    out.println("<html>");
    out.println("<head>");
    out.println("<title>Servlet GreetingServlet</title>");
    out.println("</head>");
    out.println("<body>");
    out.println("<p>Welcome " + firstName + " " + lastName + "</p>");
    out.println("</body>");
    out.println("</html>");

    out.close();
}


}

main.java：

package main;

import java.util.HashMap;
import org.mortbay.jetty.Connector;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.bio.SocketConnector;
import org.mortbay.jetty.servlet.Context;
import org.mortbay.jetty.servlet.ServletHandler;
import org.mortbay.jetty.servlet.ServletHolder;
import org.mortbay.jetty.webapp.WebAppContext;
import org.mortbay.util.ajax.Continuation;

public class Main {
Server server;
Context root;
HelloServlet servlet;
HashMap <String, Continuation> hash;
/**
 * @param args
 * @throws Exception 
 */
public static void main(String[] args) throws Exception {
    new Main().start();
}

public void start()  throws Exception {
    hash = new HashMap<String, Continuation>();
    server = new Server(80);
            root = new WebAppContext(server,"C:/Users/sl300/Desktop/jetty/webapps/MyFirstServlet.war","/");
    server.start();
    server.join();

}

public void addContinuation(String str,Continuation cc){
    hash.put(str, cc);
}
    }

有什么不对？或者我怎么能打开jsp？

Answer 1

查看您的web.xml文件会很有帮助。似乎是servlet映射的问题。另一种方法是使用ServletHandler并将其添加到服务器实例，如

GrettingServlet greetingServlet = new GrettingServlet();

ServletHandler servletHandler = new ServletHandler(); servletHandler.addServletWithMapping(greetingServlet, "/your/servlet/path"); server.addHandler(servletHandler);

在jetty服务器上打开jsp

1 个答案: