初识servlet

<!-----webXML配置servlet----->

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>HeadFirstJspServletChap05</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

<servlet>
<servlet-name>helloWorldServlet</servlet-name>
<servlet-class>com.java.web.HelloWorldServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>helloWorldServlet</servlet-name>
<url-pattern>/helloWorld</url-pattern>
</servlet-mapping>
</web-app>

 

//向页面输出

package com.java.web;

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 HelloWorldServlet extends HttpServlet{

/**
*
*/
private static final long serialVersionUID = 1L;

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
System.out.println("get");
this.doPost(request, response);
}

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setCharacterEncoding("gbk");
PrintWriter out=response.getWriter();
out.println("<html>");
out.println("<head><title>初识servlet</title></head>");
out.println("初识servlet！");
out.println("</html>");
out.close();
}

}

 

posted @ 2017-02-22 07:21  小拽A  阅读(170)  评论(0)    收藏  举报