springboot newInstance无法注入

项目中使用到class.newInstance()实例化对象时发现实例化出来对象中注入的Bean都是null

代码:

public class Test1 {

	public void test(){
		Class class = Tast2.class;
		Test2 test2 = class.newInstance();//newInstance实例化出来的对象中TestService 是null
		test2.test();//报空指针
	}
}



public class Test2 {

	@Autowired
	private TestService testService;

	public void test(){
		testService.test();
	}
}


//正确用法
public class Test3 {

	@Autowired
	private ApplicationContext applicationContext;

	public void test(){
		Class clazz = Tast2.class;
		Test2 test2 = applicationContext.getAutowireCapableBeanFactory().createBean(clazz);
		test2.test();
	}
}