nginx location configuration regular expression instance elaboration

1. location is introduced

The & # 8226; location is configured in the server block to sort through different requests by matching the received uri, such as reverse proxy, fetch static files, etc
The & # 8226; location can be multiple in the server block, in sequence, and will be processed by the first matched location
The & # 8226; The matching function of localtion is only used for matching distribution, and it will not change the content or other functions of uri. When I first started to understand it, I confused some concepts of uri. I suggest more testing to see the actual effect

2.localtion matching rules

The & # 8226; location [= | ~ | ~* | ^~] uri {... }
The & # 8226; location @ name {... }

Note 1: rules cannot be mixed

Note 2 the following examples are based on this server

 server {
    listen    8861;
    server_name abc.com;
  }

2.1 "=" exact match

The & # 8226; The content must match the expression exactly 1

Ex. :

location = / {
  .....
}
#  Matches only http://abc.com
# http://abc.com [ The match is successful ]
# http://abc.com/index [ Matching failure ]

2.2 "~", case sensitive

Ex ・ :

location ~ /Example/ {
  .....
}
#http://abc.com/Example/ [ The match is successful ]
#http://abc.com/example/ [ Matching failure ]

2.3. "~*", case ignored

Ex. :

location ~* /Example/ {
  .....
}
#  Will be ignored  uri  Partial case 
#http://abc.com/test/Example/ [ The match is successful ]
#http://abc.com/example/ [ The match is successful ]

2.4. "^~", matches only those starting with uri

Ex. :

location ^~ /index/ {
  .....
}
# In order to  /img/  The first request will be matched 
#http://abc.com/index/index.page  [ The match is successful ]
#http://abc.com/error/error.page [ Matching failure ]

2.5. "@", nginx internal jump

Ex. :

location /index/ {
  error_page 404 @index_error;
}
location @index_error {
  .....
}
# In order to  /index/  The initial request, if the status of the link is  404 . It's going to match  @index_error  On this rule. 

2.6 no rules

The & # 8226; When no rules are added, the default is case-sensitive and the prefix matches, which is equivalent to adding "~" and "^~".

The & # 8226; Only/means match all uri

location /index/ {
  ......
}
#http://abc.com/index  [ The match is successful ]
#http://abc.com/index/index.page  [ The match is successful ]
#http://abc.com/test/index  [ Matching failure ]
#http://abc.com/Index  [ Matching failure ]
#  Match to all uri
location / {
  ......
}

conclusion