1、  Servlet 类的写法如下：

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;public class TestServlet extends HttpServlet {
 @Override
 protected void doGet(HttpServletRequest req, HttpServletResponse resp)
   throws ServletException, IOException {
  // TODO Auto-generated method stub
  this.doPost(req, resp);
 } @Override
 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
   throws ServletException, IOException {
  // TODO Auto-generated method stub
     PrintWriter pw  =resp.getWriter();
     pw.println("<html>");
     pw.println("<head>");
     pw.println("<title>");
     pw.println("this First Servlet ");
     pw.println("</title>");
     pw.println("</head>");
     pw.println("<body>");
     pw.println("<h1>welcome here !</h1>");
     pw.println("</body>");
     pw.println("</html>");
     pw.close();
 }}

 

 

2、Servlet的配置文件web.xml的写法

 

<?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">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
  <servlet-name>jack1</servlet-name>
  <servlet-class>org.Servlert.com.TestServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  <servlet-name>jack1</servlet-name>
   <url-pattern>/test1</url-pattern>
  </servlet-mapping>
</web-app>

3、总结、

这个程序没什么要多讲的，就是通过配置文件找到Servlet类。在IE输入：http://localhost:8080/项目名字/test1

就可以了。

 

 

 

4、下面是一个老兄总结的  Servlet中web.xml的配置


           Servlet中web.xml配置

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