Cannot call sendRedirect()/forward after the response has been committed的问题
问题其实已经很明确了,说明就是不能重定向,因为已经有response了。
然后一检查,是前面已经用servlet的printWriter打印东西了。
所以,重定向前
必须先保证没有任何的输出,包括:
1、Cookie;
2、resp.getWriter()写文本信息;
3、已经发送过重定向。
重点检查下这些问题吧,如果你写了Filter,或者Servlet已经做过forward,也要注意看看。
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