如何访问spring bean中的命令行参数？ [英] How to access command line args in a spring bean?

问题描述

问题：如何在弹簧 @Bean 中的启动方法中访问 varargs ，如下面的MyService？

Question: how can I access the varargs of the startup method inside a spring @Bean like MyService below?

@SpringBootApplication
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

@Component
public MyService {
       public void run() {
               //read varargs
       }
}

java -jar [jarfile] [命令行参数]

java -jar [jarfile] [Command Line Arguments]

推荐答案

通过分析spring源代码，spring似乎注册了一个类型为的单例bean ApplicationArguments 的方法 prepareContext 类 SpringApplication

By analyzing spring source code, it seems that spring registers a singleton bean of type ApplicationArguments in the method prepareContext of the class SpringApplication

context.getBeanFactory().registerSingleton("springApplicationArguments",
            applicationArguments);

所以我认为你可以在你的服务中自动装配这个bean：

So I think you can autowire this bean in your service :

@Component
public MyService {

      @Autowired
      private ApplicationArguments  applicationArguments;

      public void run() {
             //read varargs
             applicationArguments.getSourceArgs();

      }
}

这篇关于如何访问spring bean中的命令行参数？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！