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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