Spring Bean类可以包含静态方法吗？

I hope this isn't too noob of a question, I'm still quite new to Spring. Can a bean class contain static methods? My initial thoughts is no because a static method is global, there's one instance per the entire application and threads to share but a bean might not be defined as such.

我希望这不是一个问题的太多菜鸟,我对Spring来说还是一个新手。 bean类可以包含静态方法吗?我最初的想法是否定的,因为静态方法是全局的,每个应用程序和共享的线程都有一个实例,但bean可能没有这样定义。

I tried searching for this question but couldn't find a clear answer.

我试着寻找这个问题,但找不到明确的答案。

2 个解决方案

#1

Yes,

A spring bean may have static methods too.

spring bean也可能有静态方法。

Using constructor @Autowired

使用构造函数@Autowired

@Component
public class Boo {

    private static Foo foo;

    @Autowired
    public Boo(Foo foo) {
        Boo.foo = foo;
    }

    public static void randomMethod() {
         foo.doStuff();
    }

    public static int getThree(){
         return 3;
    }
}

You may also do it this way: Using @PostConstruct to hand value over to static field

您也可以这样做:使用@PostConstruct将值传递给静态字段

The idea here is to hand over a bean to a static field after bean is configured by spring.

这里的想法是在bean由spring配置之后将bean移交给静态字段。

@Component
public class Boo {

    private static Foo foo;
    @Autowired
    private Foo tFoo;

    @PostConstruct
    public void init() {
        Boo.foo = tFoo;
    }

    public static void randomMethod() {
         foo.doStuff();
    }
}

source: @Autowired and static method

来源:@Autowired和静态方法

2 个解决方案

#1

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