如何在jsp中获取上下文参数值？

Question

  <context-param>
        <param-name>productSearchRPP</param-name>
        <param-value>8</param-value>
    </context-param>

我想在products.jsp页面中获得productSearchRPP的价值

Answer 1

pageContext.getServletContext().getInitParameter("key");

这是您在JSP中获取上下文参数值的方法.在JSTL中你可以这样得到它

${pageContext.servletContext}

要么

${applicationScope.attributeName}

Answer 2

${initParam['productSearchRPP']}

或者,进入scriptlet

<%= pageContext.getServletContext().getInitParameter("productSearchRPP") %>

Answer 3

即使你可以在你的jsp中试试这个.

ServletContext context = pageContext.getServletContext();
com = context.getInitParameter("com");

并使用jstl你可以使用.

${initParam['theStringIWant']}