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static方法使用bean的方式

news 来源：原创 2025/5/2 4:46:56

@Component
public class MyBean {
    public void fun() {
        System.out.println("my bean fun");
    }
}

方法一：使用set方法注入

@Component
public class StaticBean {
    private static MyBean myBean;

    public static void fun() {
        myBean.fun();
    }

    @Autowired
    public void setMyBean(MyBean MyBean) {
        myBean = MyBean;
    }
}

方法二：使用@PostConstruct+spring上下文获取bean

@Component
public class StaticBean {
    private static MyBean myBean;

    public static void fun() {
        myBean.fun();
    }

    @PostConstruct
    public void init() {
        myBean = applicationContext.getBean(MyBean.class);
    }
}

方法三：使用@PostConstruct+@Autowired注入

@Component
public class StaticBean {
    @Autowired
    private MyBean injectMyBean;

    private static MyBean myBean;

    public static void fun() {
        myBean.fun();
    }

    @PostConstruct
    public void init() {
        myBean = injectMyBean;
    }
}

方法四：通过构造函数注入

@Component
public class StaticBean {
    @Autowired
    private MyBean injectMyBean;

    private static MyBean myBean;

    public static void fun() {
        myBean.fun();
    }

    @Autowired
    public StaticBean(MyBean myBean) {
        StaticBean.myBean = myBean;
    }
}