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Springboot注入ApplicationContext的几种方式     所属分类 springboot 浏览量 124
Autowired 注入
@Component
public class XxxBean {
    @Autowired
    private ApplicationContext applicationContext;
}


构造方法注入

@Component
public class XxxBean{
    private ApplicationContext applicationContext;

    public XxxBean(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }
}


Java配置类中 构造函数注入

@Configuration
public class XxxConfig  {

	@Bean
	public XxxBean bean2(ApplicationContext ctx){	
		System.out.println("******TestConfi.springInfoBean2.ctx="+ctx);
		Environment environment = ctx.getEnvironment();
		System.out.println("******TestConfi.springInfoBean2.environment="+environment);
		System.out.println(environment.getProperty("app.name"));
	    return new XxxBean();
	}
	
	
	@Bean
	public XxxBean bean1(Environment environment){
		System.out.println("******TestConfi.springInfoBean.genvironment="+environment);
		System.out.println(environment.getProperty("app.name"));
	    return new XxxBean();
	}
	
}


ApplicationContextAware

@Component
public class SpringContextUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextHolder.applicationContext = applicationContext;
    }
    
}

注意顺序 ,该bean先加载再使用
@DependsOn("springContextUtil")

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