通过spring工具类获取bean

package xxx;

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.NoSuchBeanDefinitionException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

@Component

public class SpringUtil implements ApplicationContextAware {

private static ApplicationContext applicationContext = null;

public SpringUtil() {

}

public void setApplicationContext(ApplicationContext arg0) throws BeansException {

if (applicationContext == null) {

applicationContext = arg0;

}

}

public static ApplicationContext getApplicationContext() {

return applicationContext;

}

public static void setAppCtx(ApplicationContext webAppCtx) {

if (webAppCtx != null) {

applicationContext = webAppCtx;

}

}

/**

* 拿到ApplicationContext对象实例后就可以手动获取Bean的注入实例对象

*/

public static <T> T getBean(Class<T> clazz) {

return getApplicationContext().getBean(clazz);

}

public static <T> T getBean(String name, Class<T> clazz) throws ClassNotFoundException {

return getApplicationContext().getBean(name, clazz);

}

public static final Object getBean(String beanName) {

return getApplicationContext().getBean(beanName);

}

public static final Object getBean(String beanName, String className) throws ClassNotFoundException {

Class<?> clz = Class.forName(className);

return getApplicationContext().getBean(beanName, clz.getClass());

}

public static boolean containsBean(String name) {

return getApplicationContext().containsBean(name);

}

public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {

return getApplicationContext().isSingleton(name);

}

public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {

return getApplicationContext().getType(name);

}

public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {

return getApplicationContext().getAliases(name);

}

}