重定向主页中的所有页面 [英] Redirect All the Pages in Home Page

问题描述

我有一个包含少量jsp页面的Web应用程序。我的主页是welcome.jsp和应用程序网址就像www.test.com

I have a web application which includes few jsp pages. And my home page is welcome.jsp And the Application url is like www.test.com

因此，每当用户点击网址（www.test.com）时重定向到www.test.com/welcome.jsp

So, whenever a user hit the url (www.test.com) it redirects to www.test.com/welcome.jsp

现在我想要用户直接想要访问任何其他页面，例如www.test.com/*.jsp它应始终重定向到我的主页www.test.com/welcome.jsp

now i want if a user directly wants to access any other page like www.test.com/*.jsp it should always redirect to my home page that is www.test.com/welcome.jsp

请提供任何有关如何操作的建议。

Kindly give any suggestion on how to do it.

推荐答案

您可以将以下映射添加到您的web.xml：

You can add the following mapping to your web.xml:

<servlet>
    <servlet-name>welcome</servlet-name>
    <jsp-file>welcome.jsp</jsp-file>
</servlet>

<servlet-mapping>
    <servlet-name>welcome</servlet-name>
    <url-pattern>*.jsp</url-pattern>
</servlet-mapping>

这会将.jsp文件的所有请求映射到welcome.jsp。

This will map all requests for a .jsp file to welcome.jsp.

编辑：

如果您只想重新定向用户（如果他们尚未访问过欢迎jsp），请不要使用web.xml文件中的上述代码。相反，在你的jsp中，在welcome.jsp中设置用户会话的标志：

If you want to only redirect the users if they haven't already been to the welcome jsp, don't use the code above in your web.xml file. Instead in your jsp set a flag on the user's session in welcome.jsp:

<c:set scope="session" var="sessionStarted" value="true"/>

然后添加create Filter来重定向它们就像这样一个 RedirectFilter.java ：

Then add create Filter to redirect them like this one RedirectFilter.java:

@WebFilter("*.jsp")
public class RedirectFilter implements Filter {

public void destroy() {}
public void init(FilterConfig fConfig) throws ServletException {}

/**
 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
 */
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

    Object sessionStarted = ((HttpServletRequest)request).getSession(true).getAttribute("sessionStarted");
    if(sessionStarted==null){
        request.getServletContext().getRequestDispatcher("welcome.jsp").forward(request, response);
    }else{
        chain.doFilter(request, response);
    }
}
}

这篇关于重定向主页中的所有页面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！