java - Spring Boot 使用 CLI arg 覆盖应用程序属性

Question

我有 application.properties 变量用于设置默认值:

openvasmd.socket=/usr/local/var/run/openvasmd.sock

我希望能够在应用程序运行时更改它，如下所示:

java -jar -Dopenvasmd.socket=/var/run/openvasmd.sock application.jar

但是当我想使用它的值时:

@Value("${openvasmd.socket}")
private String socket;
public String test()  {
        return "gvm-cli --socketpath "+socket;
}

结果是:

gvm-cli null

有人可以提示我哪里做错了吗？

Answer 1

来自https://www.baeldung.com/properties-with-spring

Properties from Command Line Arguments

As opposed to using files, properties can be passed directly on the command line:

java -jar app.jar --property="value"

You can also do this via system properties, which are provided before the -jar command rather than after it:

java -Dproperty.name="value" -jar app.jar