第一個Servlet服務端小程式程式
1，在webapps裡建立一個資料夾myweb，作為你的網站根目錄

在myweb中建立一個目錄WEB-INF

在WEB-INF中建立一個classes目錄

在WEB-INF中建立一個web.xml
可參照下圖建立目錄：
2,在web.xml中配置servlet

<web-app 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"
   version="2.5"> 
  <servlet>
    <servlet-name>Servlet1</servlet-name>
    <servlet-class>ServletDemo</servlet-class>  
  </servlet>
  <servlet-mapping>
    <servlet-name>Servlet1</servlet-name>
    <url-pattern>/Servlet1</url-pattern>
  </servlet-mapping>
</web-app>
 

3.在classes目錄中建立servlet程式

ServletDemo.java
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 ServletDemo extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.println("hello word!!");
	}
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}
}
 

4.通過：127.0.01:8080/myweb/Servlet1,這樣我們第一個servlet小程式hello word就成功了