為什么我的超鏈接點進去老是500 或404
//index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
? ? pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>第一個小程序</title>
</head>
<body>
<h1>第一個Servlet小例子</h1>
<hr>
<a href="servlet/HelloServlet">Get方式請求HelloServlet</a>
</body>
</html>
//web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"?
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">
? <display-name></display-name>
??
? <welcome-file-list>
? ? ? <welcome-file>index.jsp</welcome-file>
? ?</welcome-file-list>
? ?
? <servlet>
? ? ? <servlet-name>HelloServlet</servlet-name>
? ? ? <servlet-class>Servlet.HelloServlet</servlet-class>
? </servlet>
??
? <servlet-mapping>
? ? ? <servlet-name>HelloServlet</servlet-name>
? ? ? <url-pattern>/servlet/HelloServlet</url-pattern>
? </servlet-mapping>
? ?
? </web-app>
? //HelloServlet?
package servlet;
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;
//繼承于HttpServlet
public class HelloServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("處理Get()請求.......");
PrintWriter out=response.getWriter();//獲得給瀏覽器輸出的對象
out.println("<strong>Hello Servlet!</strong><br>");//用strong標簽實現加粗br標簽換行(html語言)
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
}
2016-10-30
是不是這里錯了??? <servlet-class>Servlet.HelloServlet</servlet-class>跟前面大寫S 有關系不?我看你包名好像不是大寫的吧?