scopedvars.java

来自「jsp 应用开发技术光盘 是《jsp应用开发技术》这本书的源代码」· Java 代码 · 共 28 行

package servlets;

import java.io.IOException;

import javax.servlet.*;
import javax.servlet.http.*;

public class ScopedVars extends HttpServlet {	
	
	public void doGet(HttpServletRequest request,
			HttpServletResponse response)throws ServletException, IOException {
			
			/*attribute1 的作用域：requestScope*/	
			request.setAttribute("attribute1", "First Value");
			
			/*attribute2 的作用域：requestScope*/
			HttpSession session = request.getSession();
			session.setAttribute("attribute2", "Second Value");
			
			/*attribute3 的作用域：applicationScope*/
			ServletContext application = getServletContext();
			application.setAttribute("attribute3",new java.util.Date());			
												
			RequestDispatcher dispatcher =request.getRequestDispatcher("scoped-vars.jsp");
			dispatcher.forward(request, response);
	}
}