doFilter之后再设置setHeader无效

- 日理万妓 2022-03-09 06:00 220阅读 0赞

参考这篇文章[http://www.debugease.com/javaweb/645686.html][http_www.debugease.com_javaweb_645686.html]

doFilter()方法相当于放行，已经放行了再去set\*肯定是无效的，response的content已经写到网络流中了

response状态变为committed的时候，再去set\*属性是无效的

[https://www.cnblogs.com/Leroscox/p/8305141.html][https_www.cnblogs.com_Leroscox_p_8305141.html]

![20190313102302274.png][]

这篇文章写的比较好[https://blog.csdn.net/woslx/article/details/100540958][https_blog.csdn.net_woslx_article_details_100540958]

参考

[https://guojjanjun.github.io/2018/12/05/%E4%BB%80%E4%B9%88%E6%98%AFresponse%20has%20been%20committed/][https_guojjanjun.github.io_2018_12_05_E4_BB_80_E4_B9_88_E6_98_AFresponse_20has_20been_20committed]

[https://stackoverflow.com/questions/18227713/requestdispatcher-when-is-a-response-committed][https_stackoverflow.com_questions_18227713_requestdispatcher-when-is-a-response-committed]

[https://stackoverflow.com/questions/24127007/adding-response-header-after-dofilter][https_stackoverflow.com_questions_24127007_adding-response-header-after-dofilter]

[http_www.debugease.com_javaweb_645686.html]: http://www.debugease.com/javaweb/645686.html
[https_www.cnblogs.com_Leroscox_p_8305141.html]: https://www.cnblogs.com/Leroscox/p/8305141.html
[20190313102302274.png]: /images/20220309/a78c5ac659634d0783f220ec860c8e97.png
[https_blog.csdn.net_woslx_article_details_100540958]: https://blog.csdn.net/woslx/article/details/100540958
[https_guojjanjun.github.io_2018_12_05_E4_BB_80_E4_B9_88_E6_98_AFresponse_20has_20been_20committed]: https://guojjanjun.github.io/2018/12/05/%E4%BB%80%E4%B9%88%E6%98%AFresponse%20has%20been%20committed/
[https_stackoverflow.com_questions_18227713_requestdispatcher-when-is-a-response-committed]: https://stackoverflow.com/questions/18227713/requestdispatcher-when-is-a-response-committed
[https_stackoverflow.com_questions_24127007_adding-response-header-after-dofilter]: https://stackoverflow.com/questions/24127007/adding-response-header-after-dofilter