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### 23.2. 访问命令行属性
默认情况下,SpringApplication将任何可选的命令行参数(以'--'开头,比如,--server.port=9000)转化为property,并将其添加到Spring Environment中。如上所述,命令行属性总是优先于其他属性源。
如果你不想将命令行属性添加到Environment里,你可以使用SpringApplication.setAddCommandLineProperties(false)来禁止它们。