javaweb运行时不显示图形界面

type Exception report

message An exception occurred processing JSP page /Index.jsp at line 40

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /Index.jsp at line 40

37: %>
38:
39: <%
40: List categories = CategoryService.getInstance().getCategories();
41: List topCategories = getTopCategories(categories);
42: %>
43:

1个回答

40行错了,没你的代码怎么知道哪里错了。。。

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