我正在尝试在我的jetty v9.1中部署一个简单的Helloworld webapp。我在尝试访问servlet时遇到问题,我收到了一条错误消息:
HTTP错误404
访问/ HelloServlet / servlet时遇到问题。原因是:
Not Found
我知道我在这里做错了什么,但我不知道是什么。
这是我在jetty中的Webbapp的文件结构:
webapps
+实例
+你好
的hello.xml 的index.html + WEB-INF
的web.xml +类
HelloServlet.class
index.html + WEB-INF(代表一个文件夹,WEB-INF和一个文件index.html,在同一个文件夹中你好)
这是我的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<display-name>Example</display-name>
<!-- Declaraa existenta unui servlet. -->
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>HelloServlet</servlet-class>
</servlet>
<!-- Map URLs to that servlet. -->
<servlet-mapping>
<servlet-name>servlet</servlet-name>
<url-pattern>/servlet</url-pattern>
</servlet-mapping>
HelloServlet.java
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
public class HelloServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
String input=request.getParameter("input");
PrintWriter out=response.getWriter();
out.println("<html>");
out.println("<body>");
out.println("The parameter input was \" "+input+"\" .");
out.println("</body");
out.println("</html");
}
protected void doPost(HttpServletRequest request,HttpServletResponse response) throws IOException {
String field=request.getParameter("field");
PrintWriter out=response.getWriter();
out.println("<html>");
out.println("<body>");
out.println("You entered \" "+field+"\" into the text box.");
out.println("</body>");
out.println("</html>");
}
}
的index.html
<html>
<head>
<title>Example Web Application</title>
</head>
<body>
<p>This is a static document with a form in it.</p>
<form method="POST" action="servlet">
<input name="field" type="text" />
<input type="submit" value="Submit" />
</form>
</body>
</html>
的hello.xml
<<?xml version="1.0" encoding="ISO-8859-1"?>
<<!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse.org/jetty/configure_9_0.dtd">
<<Configure class="org.eclipse.jetty.webapp.WebAppContext">
<Set name="contextPath">/hello</Set>
<Set name="extractWAR">false</Set>
<Set name="copyWebDir">false</Set>
<Set name="defaultsDescriptor"><Property name="jetty.home" default="."/>/etc/webdefault.xml</Set>
<Call name="setAttribute">
<Arg>org.eclipse.jetty.websocket.jsr356</Arg>
<Arg type="Boolean">true</Arg>
</Call>
<Get name="securityHandler">
<Set name="loginService">
<New class="org.eclipse.jetty.security.HashLoginService">
<Set name="name">Test Realm</Set>
<Set name="config"><SystemProperty name="jetty.base" default="."/>/etc/realm.properties</Set>
</New>
</Set>
<Set name="authenticator">
<New class="org.eclipse.jetty.security.authentication.FormAuthenticator">
<Set name="alwaysSaveUri">true</Set>
</New>
</Set>
<Set name="checkWelcomeFiles">true</Set>
</Get>
</Configure>
答案 0 :(得分:3)
在web.xml
中,您将url-pattern
指定为/servlet/*
,这意味着您需要使用的前缀是servlet/
,而不是HelloServlet/
:
http://localhost:8080/servlet/servlet
(尽管可以手动编写servlet,但对于真实世界的项目来说,最好选择像Spring这样已经完成所有管道工作的系统。)
答案 1 :(得分:0)
毕竟我设法找到了解决方案,我的问题得到解决。我刚刚从Intellij Idea启动了服务器,一切都运行良好。
谢谢大家的帮助。