如何在Spring Boot中获取命令行参数?
@SpringBoot" title="SpringBoot">SpringBootApplicationpublic class CommandLinetoolApplication {
@Value("${person.name}")
private String name;
public static void main(String... argv) {
SpringApplication.run(CommandLinetoolApplication.class, argv);
}
}
我正在使用eclipse,因此将运行配置设置为
但是,当运行我的应用程序时,出现异常,因为“无法解析值“ $ {person.name}”中的占位符“ person.name””
回答:
这段代码可以正常工作(Spring Boot 2.1.4):
@SpringBootApplicationpublic class DemoApplication implements ApplicationRunner
{
@Value("${person.name}")
private String name;
public static void main( String[] args )
{
SpringApplication.run( DemoApplication.class, args );
}
@Override
public void run( ApplicationArguments args ) throws Exception
{
System.out.println( "Name: " + name );
}
}
命令行:
mvn spring-boot:run -Dspring-boot.run.arguments=--person.name=Test
输出:
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.4.RELEASE)
2019-04-28 22:51:09.741 INFO 73751 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication on xxx-MacBook-Pro.local with PID 73751 (/Users/strelok/code/demo-sb/target/classes started by strelok in /Users/strelok/code/demo-sb)
2019-04-28 22:51:09.745 INFO 73751 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to default profiles: default
2019-04-28 22:51:10.943 INFO 73751 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 16.746 seconds (JVM running for 23.386)
Name: Test
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