SpringBoot项目如何将Bean注入到普通类中

@RestController
public class TestController {
 @Autowired
 public TestBean bean;// 配置文件bean
}

public class Test{
 //声明要注入的Bean变量
 private static TestBean bean;
 // 通过applicationContext上下文获取Bean
 
 public static void setApplicationContext(ApplicationContext applicationContext) {
  bean = applicationContext.getBean(TestBean.class);
 }
}

@SpringBootApplication
public class TestrApplication {
 public static void main(String[] args) {
  final ApplicationContext applicationContext = SpringApplication.run(TestApplication.class, args);
  // 将上下文传入Test类中，用于检测tcp连接是否正常
  Test.setApplicationContext(applicationContext);
 }
}

/*
 * 文件名：SpringContextUtil.java
 * 描述：获取bean实例工具类
 * 修改人：Wang Chinda
 * 修改时间：2018/10/30
 * 修改内容：新增
 */
package com.chinda.utils;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
/**
 * 获取bean实例工具类
 * @author Wang Chinda
 * @date 2018/10/30
 * @see
 * @since 1.0
 */
@Component
public class SpringContextUtil implements ApplicationContextAware {
    /**
     * 上下文对象实例
     */
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
    /**
     * 获取applicationContext
     *
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }
    /**
     * 通过name获取Bean.
     *
     * @param name
     * @return
     */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }
    /**
     * 通过class获取Bean.
     *
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }
    /**
     * 通过name以及Class返回指定的Bean
     *
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}