在其他情况下包含一个JSP文件 [英] include a JSP file in another with cases

问题描述

我如何在另一个具有IF结构的JSP中包含一个JSP页面:

How can i include a JSP page in another JSP with the IF structure:

我可以在JSP文件中使用这部分代码吗?

Can i use this part of code in a JSP file:

<%
        UtilisateurAction useraction = new UtilisateurAction();
        String statut = useraction.Connect();
        //System.out.println(statut);

        if(statut=="ADMIN"){
      %>    <%@ include file="menu.jsp"%>

       <%} 

        else {if(statut=="USER"){%>
            <%@ include file="menu.jsp"%>


        <%}} %> 

推荐答案

<%@ include file="menu.jsp"%>是静态包含，因此无论条件如何，它都将包含menu.jsp的内容.但是只有在条件为真时才会执行.

The <%@ include file="menu.jsp"%> is static include, so it will include contents of the menu.jsp no matter of the condition. But it will be executed only if the condition is true.

<jsp:include page="menu.jsp" flush="true"/>是动态包含，因此，只有在满足条件的情况下，才会真正调用menu.jsp页.但另一方面，menu.jsp必须是整页，而不是页面片段，并且不能使用在父"页面中定义的变量.

The <jsp:include page="menu.jsp" flush="true"/> is dynamic include, so, the menu.jsp page will actually be called only if the condition is satisfied. But from the other side menu.jsp must be a full page, not a page fragment, and cannot use variables defined in the 'parent' page.

所以，这实际上取决于您要实现的目标.

So, it really depends on what you want to achieve.

并且正如Marco所建议的那样，您应该使用"ADMIN".equals(statut)而不是==.

And as Marco suggested, you should use "ADMIN".equals(statut) instead of ==.

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