Java 从 spring 配置调用静态方法
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Invoke static method from spring config
提问by LucaA
Is it possible to invoke static method in Spring configuration file?
是否可以在 Spring 配置文件中调用静态方法？
public MyClass {
public static void staticMethod() {
//do something
}
}
<bean id="myBean" class="MyClass">
<!-- invoke here -->
</bean>
回答by Evgeniy Dorofeev
try this
尝试这个
<bean id="b1" class="org.springframework.beans.factory.config.MethodInvokingBean">
<property name="staticMethod" value="MyClass.staticMethod" />
</bean>
回答by Hank Lapidez
- When the static method creates an instance of MyClass you an do it like this
- 当静态方法创建 MyClass 的实例时，您可以这样做
config
配置
<bean id="myBean" class="MyClass" factory-method="staticMethod">
<!-- invoke here -->
</bean>
code
代码
public static MyClass staticMethod() {
//create and Configure a new Instance
}
- If you want the method only to be called on bean instantiation spring can't do it this way.
- 如果您只想在 bean 实例化时调用该方法，则 spring 不能这样做。
config
配置
<bean id="myBean" class="MyClass" init-method="init">
<!-- invoke here -->
</bean>
code
代码
public static void staticMethod() {
//create and Configure a new Instance
}
public void init() {
staticMethod();
}
回答by jbarrameda
Try something like this:
尝试这样的事情：
<!-- call static method -->
<bean id="test" class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass" value="MyClass" />
<property name="targetMethod" value="staticMethod" />
<property name="arguments">
<list>
<value>anArgument</value>
</list>
</property>
</bean>
Remove arguments as you might not need them.
删除参数，因为您可能不需要它们。
Taken from https://gist.github.com/bulain/1139874
摘自https://gist.github.com/bulin/1139874
I was needing to call a static method. The above code worked fine.
我需要调用一个静态方法。上面的代码运行良好。
This might be useful as well: How to make spring inject value into a static field.
这也可能很有用：How to make spring injection value into a static field。
回答by Cloud
If you are using annotations for spring configuration you can add the following method into your @Configuration class:
如果您使用 Spring 配置的注解，您可以将以下方法添加到 @Configuration 类中：
@Bean
public MethodInvokingFactoryBean methodInvokingFactoryBean() {
MethodInvokingFactoryBean methodInvokingFactoryBean = new MethodInvokingFactoryBean();
methodInvokingFactoryBean.setStaticMethod("MyClass.staticMethod");
return methodInvokingFactoryBean;
}
