formservlet.java

IT电子教育门户JAVA-web培训的源代码

package cn.edu.lg.formservlet;
//HttpServlet 属于 javax.servlet 包下
import java.io.*;
import javax.servlet.*;
//HttpServletRequest,HttpServletResponse存放在 javax.servlet.http 包下
import javax.servlet.http.*;
public class FormServlet extends HttpServlet
{
	private ServletConfig config = null;
	//初始化
	public void init(ServletConfig config) throws ServletException
	{
		this.config = config;
	}
	
	//处理Post请求
	public void doGet(HttpServletRequest req,HttpServletResponse resp) throws IOException,ServletException
	{
		//System.out.println("----Servlet doGet处理提交参数 ----");
		this.doPost(req,resp);
	}
	//处理Post请求
	public void doPost(HttpServletRequest req,HttpServletResponse resp) throws IOException,ServletException
	{
		//System.out.println("----Servlet doPost处理提交参数 ----");
		String name =req.getParameter("name");
		//取得 apllication 对象
		//ServletContext app = this.getServletContext();
		//通过 config 对象取得
		ServletContext app = this.config.getServletContext();
		app.setAttribute("addr","www.bjtu.edu.cn");
		//取得一个 session 对象
		HttpSession session = req.getSession();
		session.setAttribute("sname",name);
		System.out.println("name =>"+name);
		
		//重定向
		resp.sendRedirect("demo.jsp");
	}
	
}

/*
	<servlet>
		<servlet-name>form</servlet-name>
		<servlet-class>cn.edu.lg.formservlet.FormServlet</servlet-class>
	</servlet>
	
	
	
	<servlet-mapping>
		<servlet-name>form</servlet-name>
		<url-pattern>/formservlet</url-pattern>
	</servlet-mapping>
*/