index.jsp
-----------------------------
html
headtitleSimple jsp page/title/head
bodyPlace your content here
here is index jsp
get header info
a href="a.jsp"a.jsp/a
/body
/html
------------------------------
a.jsp页面
通过判断 referer， 判断你从哪里来。
html
headtitleSimple jsp page/title/head
bodyPlace your content here
here is a. jsp
get header info
%=request.getHeader("Referer")%
%if(null == request.getHeader("Referer") || request.getHeader("Referer").indexOf("yourdomain.com") 0){%
做人要厚道
%}else{%
合法访问
%}%
/body
/html
