Spring mvc Filter，servlet 注入service

因为 Filter servlet 是配置在 web.xml 里面的，这些在 service 实例化前 就实例化了，当我们在 Filter servlet 中用 普通注解根本就注入不进去。

用下面这个方法可以

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.stereotype.Component;

@Component("beanContextUtil")
public class BeanContextUtil implements BeanFactoryAware {
private static BeanFactory beanFactory;

public static void setContextBeanFactory(BeanFactory bf) {
beanFactory = bf;
}

public static Object getContextBean(String beanName) {
return beanFactory.getBean(beanName);
}

@Override
public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
BeanContextUtil.setContextBeanFactory(beanFactory);
}

public static Object getBean(String beanName) {
return BeanContextUtil.getContextBean(beanName);
}

}



示例：
private LogInfoService logInfoService = (LogInfoService)BeanContextUtil.getBean("logInfoService");