Springboot manually injects beans

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * Manually inject beans
 */
@Component
public class ApplicationContextUtil implements ApplicationContextAware {

  @Autowired
  private static ApplicationContext context;

  /**
   * Get ApplicationContext
   */
  public static ApplicationContext getApplicationContext() {
    return context;
  }

  /**
   * Insert ApplicationContext
   */
  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    context = applicationContext;
  }

  /**
   * Get Bean by name
   */
  public static Object getBean(String name) {
    return getApplicationContext().getBean(name);
  }


  /**
   * Get Bean by class.
   */
  public static <T> T getBean(Class<T> clazz) {
    return getApplicationContext().getBean(clazz);
  }

  /**
   * Return the specified Bean by name and Clazz
   */
  public static <T> T getBean(String name, Class<T> clazz) {
    return getApplicationContext().getBean(name, clazz);
  }
}

 use

 Implemented in the object of new

private final RatePaymentService ratePaymentService = ApplicationContextUtil.getBean(RatePaymentService.class);

 Equivalent to