helloservlet.java

利用servlet写的用户注册登陆

package com.tarena.serv.core;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class HelloServlet implements Servlet {
	private ServletConfig config;

	public HelloServlet(){
		System.out.println("HelloServlet()");
	}
	
	public void service(ServletRequest request, ServletResponse response)
			throws ServletException, IOException {
		PrintWriter out = response.getWriter();
		out.println("hello, this is my first servlet");
		out.close();
	}
	
	public void destroy() {
	}

	public ServletConfig getServletConfig() {
		return config;
	}

	public String getServletInfo() {
		return "first servlet.";
	}

	public void init(ServletConfig config) throws ServletException {
		this.config = config;
		init();
	}
	
	public void init() throws ServletException {		
	}
	
	public String getInitParameter(String name){
		return getServletConfig().getInitParameter(name);
	}


}