HTTP 状态 500 - 实例化 servlet 类 pkg.coreServlet 时出错 [英] HTTP Status 500 - Error instantiating servlet class pkg.coreServlet

问题描述

我正在创建简单的 servlet 并将其部署在 tomcat 服务器中，但出现以下错误:

I am creating simple servlet and deploying it in tomcat server but I am getting the following error:

HTTP 状态 500 - 实例化 servlet 类 pkg.coreServlet 时出错

HTTP Status 500 - Error instantiating servlet class pkg.coreServlet

tomcat 服务器上的文件结构:

File Structure on the tomcat server:

webapps     
| 
- aarya
  |
  - WEB-INF
    |
     -web.xml
     -src(folder)
       |
       -pkg
         |
         -coreServlet.class

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">


<servlet>
    <servlet-name>aaryaservlet</servlet-name>
    <servlet-class>pkg.coreServlet</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>aaryaservlet</servlet-name>
        <url-pattern>/coreServlet</url-pattern>
    </servlet-mapping>
</web-app>

coreServlet.java:

coreServlet.java:

package pkg;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*; 

public class coreServlet extends HttpServlet
{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;

public void doGet(HttpServletRequest req,HttpServletResponse res)
 throws ServletException,IOException


   {
        PrintWriter out = res.getWriter();
        res.setContentType("text/html");
        out.println("this is First servlet Example ");
    }
}

我给的网址是 http://localhost:8080/aarya/coreServlet我尝试重新启动 tomcat，但出现相同的错误.我哪里做错了?

url I am giving is http://localhost:8080/aarya/coreServlet I try by restarting tomcat but I am getting same error. Where I am doing wrong?

推荐答案

不要把src文件夹放在WEB-INF目录下！！

Do not put the src folder in the WEB-INF directory!!

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