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关于ServletContext的问题

lobing109

发贴: 5

于 2004-09-10 12:13

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class DispatcherServlet extends HttpServlet {

private String target = "/hello.jsp";

public void init(ServletConfig config)
throws ServletException {
super.init(config);

Properties ps=new Properties();
Properties ps_ch=new Properties();
try{
ServletContext context=config.getServletContext();
InputStream in=context.getResourceAsStream("/WEB-INF/messageresource.properties");
ps.load(in);
InputStream in_ch=context.getResourceAsStream("/WEB-INF/messageresource_ch.properties");
ps_ch.load(in_ch);

in.close();
in_ch.close();

context.setAttribute("ps",ps);
context.setAttribute("ps_ch",ps_ch);
}catch(Exception e){
e.printStackTrace();
}

}

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

// If it is a get request forward to doPost()
doPost(request, response);
}

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

// Get the username from the request
String username = request.getParameter("username");
// Get the password from the request
String password = request.getParameter("password");

// Add the user to the request
request.setAttribute("USER", username);
request.setAttribute("PASSWORD", password);

// Forward the request to the target named
ServletContext context = getServletContext();

System.out.println("Redirecting to " + target);
RequestDispatcher dispatcher =
context.getRequestDispatcher(target);
dispatcher.forward(request, response);
}

public void destroy() {
}
}

请问各位高手，在以上的代码中ServletContext context=getServletContext();和ServletContext context=config.getServletContext();有什么区别吗？

• 学习java的工具(IDE)有什么?

话题树型展开

人气	标题	作者	字数	发贴时间
1348	关于ServletContext的问题	lobing109	1992	2004-09-10 12:13
1203	Re:关于ServletContext的问题	blackicebird	639	2004-09-10 13:30

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