SpringBoot 普通类调用Bean对象的一种方式推荐

@Autowired
private TestService testService;

    private static ApplicationContext applicationContext;//启动类set入，调用下面set方法
    public static void setApplicationContext(ApplicationContext context) {
        applicationContext = context;
    }

@SpringBootApplication
@ServletComponentScan
public class WxApplication implements EmbeddedServletContainerCustomizer{
    public static void main(String[] args) {
        ConfigurableApplicationContext applicationContext = SpringApplication.run(WxApplication.class, args);
        TestClass.setApplicationContext(applicationContext);
    }
}

public class TestClass {
    private static ApplicationContext applicationContext;//启动类set入，调用下面set方法
    public static void setApplicationContext(ApplicationContext context) {
        // TODO Auto-generated method stub
        applicationContext = context;
    }
    public void getBeanTest(){
        TestService testService  = (TestService)applicationContext.getBean(TestService.class);
    }
}

//封装一下，类的class和请求request为必要参数
public static <T> T getBean(Class<? extends Object> cla,HttpServletRequest request){
        if(request == null){
            return null;
        }
        return (T)WebApplicationContextUtils.getRequiredWebApplicationContext(request.getServletContext()).getBean(cla);//getBean参数可为bean类的.class或直接是bean的Id
    }
//这样获取bean
TestService testService= (TestService)getBean(TestService.class, request);