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| 25. 13. 1. Servlet的响应发送重定向 |
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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, java.io.IOException {
//redirect the user depending on the value of the 'go' param
String destination = getInitParameter("go");
String contextPath = request.getContextPath();
if(destination == null || destination.equals(""))
throw new ServletException(
"Missing or invalid 'go' parameter in " +
getClass().getName());
if(destination.equals("weather"))
//ensure URL rewriting
response.sendRedirect(response.encodeRedirectURL(contextPath + "/weather") );
if(destination.equals("maps"))
//ensure URL rewriting
response.sendRedirect(response.encodeRedirectURL(contextPath + "/maps") );
}
}
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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<servlet><servlet-name>MyServletName</servlet-name>
<servlet-class>MyServlet</servlet-class>
<init-param>
<param-name>
go
</param-name>
<param-value>
weather
</param-value>
</init-param>
</servlet>
<servlet-mapping><servlet-name>MyServletName</servlet-name>
<url-pattern>/index.html</url-pattern>
</servlet-mapping>
</web-app>
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 Download: ServletResponseSendRedirect.zip( 89 k) |
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