Posted on 2011-04-29 15:11
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Servlet 总结
Web.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <web-app version="2.4"
3 xmlns="http://java.sun.com/xml/ns/j2ee"
4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
6 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
7 <servlet>
8 <description>This is the description of my J2EE component</description>
9 <display-name>This is the display name of my J2EE component</display-name>
10 <servlet-name>ValidateView</servlet-name>
11 <servlet-class>org.man.prj.ValidateView</servlet-class>
12 </servlet>
13
14 <servlet-mapping>
15 <servlet-name>ValidateView</servlet-name>
16 <url-pattern>/ValidateView</url-pattern>
17 </servlet-mapping>
18 <welcome-file-list>
19 <welcome-file>index.jsp</welcome-file>
20 </welcome-file-list>
21 </web-app>
22
二话不说看代码：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>ValidateView</servlet-name>
<servlet-class>org.man.prj.ValidateView</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ValidateView</servlet-name>
<url-pattern>/ValidateView</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
package org.man.prj;
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 ValidateView extends HttpServlet {
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
}
输入tomcat验证一下：
http://localhost:8888/Validate/ValidateView