testservlet.java

用户可以登陆注册对房屋信息的增删改查功能

package com.qhit;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class TestServlet extends HttpServlet {

	@Override
	protected void service(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
		// TODO Auto-generated method stub
		System.out.println("调用service方法");
		super.service(arg0, arg1);
		
	}


	/**
	 * Constructor of the object.
	 */
	public TestServlet() {
		super();
		System.out.println("实例化");
	}


	public void destroy() {
		System.out.println("销毁");
	}

	
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws
    ServletException, IOException {
response.setContentType("text/html;charset=gbk");
PrintWriter out = response.getWriter();
out.println("<h1>请求报头</h1>");
out.println("Method:" + request.getMethod() + "<br>");
out.println("RequestURI:" + request.getRequestURI() + "<br>");
out.println("Protocol:" + request.getProtocol() + "<br>");
out.println("<table border='1' cellspacing='0'>");
Enumeration en = request.getHeaderNames();
while (en.hasMoreElements()) {
    String name = (String) en.nextElement();
    String value = request.getHeader(name);
    out.println("<tr><td bgcolor='#FFFF00'>" + name + "</td><td>" + value + "</td></tr>");
}
out.println("</table>");
out.close();
}

	/**
	 * 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 {

		System.out.println("调用doPost方法");
		doGet(request,response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		System.out.println("调用init方法");
	}

}