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  • nginx_if

    if 空格 (条件) {设定条件进行重写}

    条件语法
    
    “=” 判断相等,用于字符比较。
    
    “~”用正则来匹配 (表示区分大小写),“~*” 不区分大小写
    
    “-f -d -e”来判断是否为文件、目录、是否存在
    
    关于if (条件)中的条件,具体还有那些功能大家可以参见官方文档。
    
    以下是这段文字是Module ngx_http_rewrite_module 中的内容。
    
    A condition may be any of the following:
    
    a variable name; false if the value of a variable is an empty string or “0”; 
    Before version 1.0.1, any string starting with “0” was considered a false value. 
    comparison of a variable with a string using the “=” and “!=” operators; 
    matching of a variable against a regular expression using the “~” (for case-sensitive matching) and “~*” (for case-insensitive matching) operators. Regular expressions can contain captures that are made available for later reuse in the 1..1..9 variables. Negative operators “!~” and “!~*” are also available. If a regular expression includes the “}” or “;” characters, the whole expressions should be enclosed in single or double quotes. 
    checking of a file existence with the “-f” and “!-f” operators; 
    checking of a directory existence with the “-d” and “!-d” operators; 
    checking of a file, directory, or symbolic link existence with the “-e” and “!-e” operators; 
    checking for an executable file with the “-x” and “!-x” operators.
    

    使用if实现根据浏览器分离访问

    //配置文件
    
    location / {
        root   html;
        index  index.html index.htm;
        if ($http_user_agent ~* "MSIE")      #MSIE IE浏览器
          {
            root /var/www/MSIE;
          }
        if ($http_user_agent ~* "Firefox")    #Firefox火狐浏览器
          {
            root /var/www/Firefox;
          }
            }
    //添加主页文件
    echo "IE" > /var/www/MSIE/test.html
    echo "Firefox" > /var/www/Firefox/test.html
    
    • 测试、分别使用Firefox和IE浏览器访问

    网页访问(物理机没有做hosts解析使用LB的IP访问)

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  • 原文地址:https://www.cnblogs.com/cljhfy/p/11006055.html
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