方法一  不用配置xml,直接java程式碼實現

public class GetApplicationContext {


	private static class ApplicationContextHolder {
		// 單例變數
		private static ApplicationContext AC = new FileSystemXmlApplicationContext(
				"classpath:applicationContext.xml");
	}


	// 私有化的構造方法，保證外部的類不能通過構造器來例項化。
	private GetApplicationContext() {


	}


	// 獲取單例物件例項
	public static ApplicationContext getInstance() {
		if (ApplicationContextHolder.AC == null) {
			ApplicationContextHolder.AC = new FileSystemXmlApplicationContext(
					"classpath:applicationContext.xml");
		}
		return ApplicationContextHolder.AC;
	}
}
 

獲取所有spring自動裝配的bean;

<span style="font-size:18px;">//獲取spring裝配的bean個數
GetApplicationContext.getInstance().getBeanDefinitionNames().length;
//逐個打印出spring自動裝配的bean。根據我的測試，類名第一個字母小寫即bean的名字
for(int i=0;i<33;i++){
	System.out.println( GetApplicationContext.getInstance().getBeanDefinitionNames()[i]);
}</span>
 

<span style="font-size:18px;">StorageReturnService ossService = (StorageReturnService) GetApplicationContext.getInstance().getBean("storageReturnServiceImpl");</span>

方法二 實現ApplicationContextAware 
一定要在spring.xml中加上:
<bean id="Spring

<span style="font-size:18px;">public class SpringContextUtil implements ApplicationContextAware {
  private static ApplicationContext applicationContext;     //Spring應用上下文環境
 
  /**
  * 實現ApplicationContextAware介面的回撥方法，設定上下文環境   
  * @param applicationContext
  * @throws BeansException
  */
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    SpringContextUtil.applicationContext = applicationContext;
  }
 
  /**
  * @return ApplicationContext
  */
  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }
 
  /**
  * 獲取物件   
  * @param name
  * @return Object 一個以所給名字註冊的bean的例項
  * @throws BeansException
  */
  public static Object getBean(String name) throws BeansException {
    return applicationContext.getBean(name);
  }
 
  /**
  * 獲取型別為requiredType的物件
  * 如果bean不能被型別轉換，相應的異常將會被丟擲（BeanNotOfRequiredTypeException）
  * @param name       bean註冊名
  * @param requiredType 返回物件型別
  * @return Object 返回requiredType型別物件
  * @throws BeansException
  */
  public static Object getBean(String name, Class requiredType) throws BeansException {
    return applicationContext.getBean(name, requiredType);
  }
 
  /**
  * 如果BeanFactory包含一個與所給名稱匹配的bean定義，則返回true 
  * @param name
  * @return boolean
  */
  public static boolean containsBean(String name) {
    return applicationContext.containsBean(name);
  }
 
  /**
  * 判斷以給定名字註冊的bean定義是一個singleton還是一個prototype。
  * 如果與給定名字相應的bean定義沒有被找到，將會丟擲一個異常（NoSuchBeanDefinitionException）   
  * @param name
  * @return boolean
  * @throws NoSuchBeanDefinitionException
  */
  public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
    return applicationContext.isSingleton(name);
  }
 
  /**
  * @param name
  * @return Class 註冊物件的型別
  * @throws NoSuchBeanDefinitionException
  */
  public static Class getType(String name) throws NoSuchBeanDefinitionException {
    return applicationContext.getType(name);
  }
 
  /**
  * 如果給定的bean名字在bean定義中有別名，則返回這些別名   
  * @param name
  * @return
  * @throws NoSuchBeanDefinitionException
  */
  public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
    return applicationContext.getAliases(name);
  }
}</span>

action呼叫： 

<span style="font-size:18px;"> 
public class UserAction extends BaseAction implements Action,ModelDriven{
    
    private Users user = new Users(); 
 //不用再載入springContext.xml檔案,因為在web.xml中配置了,在程式中啟動是就有了.    
    UserService userService = (UserService) SpringContextUtil.getBean("userService");
    
    public String execute() throws Exception {         
        return SUCCESS;
    }
 
  public Object getModel() {
        return user;
    }     
    
    public String getAllUser(){
        HttpServletRequest request = ServletActionContext.getRequest();         
        List ls=userService.LoadAllObject( Users.class );
        request.setAttribute("user",ls);     
        this.setUrl("/yonghu.jsp");
        return SUCCESS;
    }
}</span>