如何使用表单操作从JSP页面映射servlet调用？ [英] How to map a servlet call from a JSP page using form action?

问题描述

我有一个名为Welcome_2.html 的JSP页面，并且在其表单操作中我调用了一个像这样的servlet：

I have a JSP page named Welcome_2.html and in its form action I have invoked a servlet like this :

<form action="/servlets/MyFirstServlet" method="post" id="form_id">

servletMyFirstServlet位于
WEB-INF
类
servlets
MyFirstServlet

The servlet "MyFirstServlet" is under WEB-INF classes servlets MyFirstServlet

和jsp位于文件夹
HTML
下，与WEB-INF处于同一级别

and the jsp is under the folder HTML which is in the same level like WEB-INF

即在练习中我有3个文件夹
HTML
META-INF
web-INF

i.e. inside practice I have 3 folders HTML META-INF WEB-INF

在web.xml中我有以下代码段

in web.xml I have the following snippet

    <servlet>
    <servlet-name>MyFirstServlet</servlet-name>
    <servlet-class>servlets.MyFirstServlet</servlet-class>
</servlet>  
<servlet-mapping>
    <servlet-name>MyFirstServlet</servlet-name>
    <url-pattern>/servlets/MyFirstServlet</url-pattern>
</servlet-mapping>

为什么不调用servlet？我点击浏览器上的HTML页面并尝试调用servlet ...我只是初学者
原谅我的智力不佳。

Why the servlet is not being invoked? I am clicking on the HTML page on my browser and trying to invoke the servlet ... I am just a beginner pardon me for my poor intellect.

推荐答案

由于您的表单操作是/ servlets / First
因此您的网址格式应为

As your form action is "/servlets/First" so your url pattern should be

<url-pattern>/servlets/First</url-pattern>

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