简单的Servlet生命周期小例子

package com.wjrong.servlet;

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 HelloServlet extends HttpServlet {

	public HelloServlet() {
		System.out.println("构造方法");
	}

	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		System.out.println("销毁方法被调用");
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		String charsetString=getInitParameter("charset");
		response.setCharacterEncoding(charsetString);
		PrintWriter out = response.getWriter();
		out.println("");
		out.println("");
		out.println("  ");
		out.println("  ");
		out.print("    doGet方法 ");
		System.out.println("doGet方法被调用");
		out.println("  ");
		out.println("");
		out.flush();
		out.close();
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doGet(request, response);
	}

	public void init() throws ServletException {
		// Put your code here
		System.out.println("初始化方法被调用");
	}

}