在普通类中获取Spring管理的bean

  1、在项目中添加下面的类:

  

import org.springframework.context.ApplicationContext;  

import org.springframework.context.ApplicationContextAware;  

/** 

 * 以静态变量保存Spring ApplicationContext, 可在任何代码任何地方任何时候中取出ApplicaitonContext. 

 *  

 */  

public class SpringContextHolder implements ApplicationContextAware {  

private static ApplicationContext applicationContext;  

  

/** 

* 实现ApplicationContextAware接口的context注入函数, 将其存入静态变量. 

*/  

public void setApplicationContext(ApplicationContext applicationContext) {  

SpringContextHolder.applicationContext = applicationContext; // NOSONAR  

}  

  

/** 

* 取得存储在静态变量中的ApplicationContext. 

*/  

public static ApplicationContext getApplicationContext() {  

checkApplicationContext();  

return applicationContext;  

}  

  

/** 

* 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型. 

*/  

@SuppressWarnings("unchecked")  

public static <T> T getBean(String name) {  

checkApplicationContext();  

return (T) applicationContext.getBean(name);  

}  

  

/** 

* 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型. 

*/  

@SuppressWarnings("unchecked")  

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

checkApplicationContext();  

return (T) applicationContext.getBeansOfType(clazz);  

}  

  

/** 

* 清除applicationContext静态变量. 

*/  

public static void cleanApplicationContext() {  

applicationContext = null;  

}  

  

private static void checkApplicationContext() {  

if (applicationContext == null) {  

throw new IllegalStateException("applicaitonContext未注入,请在applicationContext.xml中定义SpringContextHolder");  

}  

}  

}  

  2、在spring配置文件中加入:

<bean class="com.xxxxx.SpringContextHolder" lazy-init="false" />  

  3、使用方法:

  SpringContextHolder.getBean('xxxx')的静态方法得到spring bean对象 

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