3

我是 Servlet 功能的新手。我正在尝试在 JSP 表单中获取一些数据并尝试使用 Servlet 在控制台中打印它。但我无法做到这一点。

web.xml

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

  <servlet>
    <servlet-name>controlServlet</servlet-name>
    <servlet-class>com.selenium8x8.servlet.ControlServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>controlServlet</servlet-name>
    <url-pattern>/*</url-pattern>
  </servlet-mapping>
</web-app>

启动.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
 <form action="Startup" method="post">
        <input type="text" name="name"/><br>        
        <input type="text" name="group"/>
        <input type="text" name="pass"/>
        <input type="submit" value="submit">            
    </form>

</body>
</html>

ControlServlet.java

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ControlServlet extends HttpServlet {

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String name = request.getParameter("name");
        String group = request.getParameter("group");
        String pass = request.getParameter("pass");
        System.out.println("Name :"+ name);
        System.out.println("group :"+ group);
        System.out.println("pass :"+ pass);
    }

}

执行后，它会抛出以下错误，

HTTP Status 405 - HTTP method GET is not supported by this URL

type Status report

message HTTP method GET is not supported by this URL

description The specified HTTP method is not allowed for the requested resource.
4

4 回答 4

2

@Prassana：请按如下方式修改您的 web.xml，它应该可以工作。我测试了您的代码及其对我的工作。这适用于 GET 和 POST。

<servlet>
<servlet-name>ControlServlet</servlet-name>
<servlet-class>com.selenium8x8.servlet.ControlServlet</servlet-class>
  </servlet>

  <servlet-mapping>
<servlet-name>ControlServlet</servlet-name>
<url-pattern>/Startup</url-pattern>
  </servlet-mapping>
</web-app>
于 2013-10-16T17:08:08.983 回答
1

更改映射

<form action="/Startup" method="post">

Step2：添加ovveride注释

  @Override
  public  void doPost(HttpServletReques...

get 我猜它无法检测到您的发布方法并尝试使用方法。

并尝试使用 get 方法检查一次，

@Override
  public void doGet(HttpServletReques...
于 2013-10-16T14:29:06.053 回答
0

需要更改表单标签中的操作，如下所示

 <form action="/Startup" method="post">
于 2013-10-16T14:15:05.670 回答
0

替换这个：<form action="Startup"

这样 ：<form action="/Startup"

于 2013-10-16T14:15:43.740 回答