include标准标签举例 test3.jsp <String str "test3,Hello";%> <jsp:include page="test4.jsp"/> <%=str%> test4.jsp <str str "test4 Hello";%> test3.jsp显示结果： 无法编译(str cannot be resolved) include标准标签举例 test3.jsp <% String str = "test3,Hello";%> <jsp:include page="test4.jsp" /> <%=str%> test4.jsp <% str = str + "test4 Hello";%> test3.jsp显示结果： 无法编译（str cannot be resolved ）