一个servlet的步骤

public class simpleHello extends HttpSerlet{

public void doGet(HttpRequest req,HttpResponse res){

PrintWriter out = res.getWriter();

out.println("hello world");

out.close;

}

}

 

web.xml

 

<servlet>
      <servlet-name>helloworld</servlet-name>
      <servlet-class>SimpleHello</servlet-class>
</servlet>
    
        
<servlet-mapping>
      <servlet-name>helloworld</servlet-name>
      <url-pattern>/hello</url-pattern>
</servlet-mapping>