mc admin user 的 policy 子命令用来以 JSON 格式导出用户策略信息，语法如下：
C:\>mc admin user policy -h
NAME:
mc admin user policy - export user policies in JSON format
USAGE:
mc admin user policy TARGET USERNAME
FLAGS:
--config-dir value, -C value path to configuration folder (default: "C:\\Users\\Administrator\\mc")
--quiet, -q disable progress bar display
--no-color disable color theme
--json enable JSON lines formatted output
--debug enable debug output
--insecure disable SSL certificate verification
--help, -h show help
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示例
（1）以JSON格式显示用户“foobar”的策略文档。
D:\server\minio>mc admin user policy local foobar
{
"Version": "",
"Statement": null
}
