Configuration of the servlet in Web. xml

Import Javax.servlet.*;import java.io.ioexception;import java.io.pipedwriter;import java.io.printwriter;/** * Created with IntelliJ idea. * USER:WBB * DATE:14-6-17 * Time: Morning 11:56 * To change this template use File | Settings | File Templates.    */public class Helloworldservlet implements Servlet {private ServletConfig config;    @Override public void init (ServletConfig config) throws servletexception {this.config = config;    } @Override Public ServletConfig getservletconfig () {return config; } @Override public void service (ServletRequest servletrequest, Servletresponse servletresponse) throws Servletexcept        Ion, IOException {printwriter out = Servletresponse.getwriter ();        Out.println ("Hello World");    Out.close ();  } @Override Public String Getservletinfo () {return null; To change body of implemented methods use File | Settings |    File Templates. } @Override public void Destroy () {}}

Configuration of Web. xml

<?xml version= "1.0" encoding= "UTF-8"? ><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<span style=" White-space:pre "></span>  http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd "           version=" 2.5 ">     <!--for declaring servlet-->    <servlet>        <!--specifying the name of the servlet, In the same Web application, the name of each servlet must be unique, and the content of the element cannot be empty-->        <servlet-name>helloworldservlet </servlet-name>        <!--Specify the full qualified name of the servlet (that is, the path to which the class is located)-->        <servlet-class>wbb.servlet.HelloWorld.HelloWorldServlet</servlet-class>        <!--configuration initialization parameters-->        <init-param>        &NBsp   <param-name>greeting</param-name>            <param-value> Welcome you</param-value>        </init-param>    </servlet>    <!--used to define a mapping between a servlet and a URL-->    <servlet-mapping>        <!-- The servlet name here must be the same as the child element <servlet-name> given name in <servlet>-->        <servlet-name >HelloWorldServlet</servlet-name>        <!--to specify the URL path for the servlet, The path is relative to the Web application up and down root-->        <url-pattern>/helloworld</url-pattern>    </servlet-mapping>

Enter in the browser: Http://localhost:8080/helloworld, you can see that HelloWorld is defined in the Web. XML <url-pattern>