(操作题）将下面的Servlet配置信息中的代码转换成WebServlet注解代码：

<xml version="1.0 encoding="UTF-8"?>

<we

xmlns="https://jak

<display- name> ch02</display- name>aweblsonlel2.2.3

< welcome-file- list>

< welcome--file> index.html </welcome-- file>

< /welcome-file- list>

<servlet>

<description></description>

<display- name> HelloServlet </display - nam

<servlet- class> com zkl. ch02.servlet. HelloServlet </servlet- class>

</servlet>

<servlet--mapping>

<servlet-name> HelloServlet</servlet- name>

<ur1-pattern>/HelloServlet</url-pattern

</servlet- mappin

</web-app>

@WebServlet(

name = “XXServlet”,urlPatterns = {“/xx”},

initParams = {@WebInitParams(name = “username”,value = “qst”)}

loadOnStartup = 0,asyncSupported = true,

displayName = “XXServlet”, description = “Servlet样例”

)

public class HelloServlet extends HttpServlet {

......

}