2.7.0版的rest协议，无论是内嵌式或者外部集成式都不起作用。2.6.5版却没问题。

[xuyaokun-github]

• I have searched the issues of this repository and believe that this is not a duplicate.
• I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: 2.7.0
• Operating System version: windows
• Java version: 1.8

Steps to reproduce this issue

1. 参考dubbo官网的rest协议使用例子来模拟
   http://dubbo.apache.org/zh-cn/docs/user/references/protocol/rest.html
2. 按照上面链接中说的写法，分别尝试2.6.5版和2.7.0版就能看出差别。2.6.5版发布的rest服务能正常被访问，而2.7.0版的rest服务不能被访问。

Pls. provide [GitHub address] to reproduce this issue.

Expected Result

What do you expected from the above steps？

Actual Result

What actually happens?
2.7.0版的rest协议，无论是内嵌式(jetty或者tomcat)或者外部集成式（通过web.xml配置）都不起作用。2.6.5版却没问题。这是2.7.0版的一个bug.

这个bug会导致restful接口无法正常访问。

[xuyaokun-github]

i can provide a demo to reproduce this problem.

[kezhenxu94]

可能与 #3445 相关

[xuyaokun-github]

https://github.com/kunghsu1021/dubborestdemo 样例demo @kezhenxu94
这个bug会在2.7.1版修复吗？

[kezhenxu94]

@kunghsu1021 关注一下 pr #3479

[chickenlj]

Duplicate of #3445