Cannot call sendRedirect() after the response has been committed
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Cannot call sendRedirect() after the response has been committed
如果response已经提交过了,就无法再发送sendRedirect了。
所以,在进行: resp.sendRedirect()之前,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,如果你写了Filter,或者Servlet已经做过forward,也要注意看看。
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