nginx的location和proxy_pass末尾加不加斜杠"/"?

以下是请求http://xxx/say/hello时的所有可能情况

location	proxy_pass	请求地址
/say	http://host/	http://host//hello
/say/	http://host/	http://host/hello
/say	http://host	http://host/say/hello
/say/	http://host	http://host/say/hello
/say	http://host/speak/	http://host/speak//hello
/say/	http://host/speak/	http://host/speak/hello
/say	http://host/speak	http://host/speak/hello
/say/	http://host/speak	http://host/speakhello

总结：

• 当proxy_pass为ip:port的形式时，proxy_pass末尾如果加"/"，proxy_pass不拼接location的路径，从location中不匹配的部分开始拼接，若不加"/",proxy_pass会拼接location的路径
• 当proxy_pass为ip:port/xxx的形式时，不管proxy_pass末尾加没加"/"，都不会拼接location的路径，而是从location中不匹配的部分开始拼接