在基于struts+spring+hibernate的开发框架下,一般service都是直接通过在Struts的action中getBean("yourServiceName")来获取,那么如果在serviceA中想调用serviceB中的方法该如何呢?
直接new 一个serviceB是不行的,因为里面可能还有依赖注入的dao等其他本来需要容器管理的资源,可以象在action中一样getBean()么?
获得applicationContext就可以了:
AppContext :
public class AppContext
{
private static ApplicationContext applicationContext;
public static ApplicationContext getApplicationContext()
{
return applicationContext;
}
public static void setApplicationContext(
ApplicationContext applicationContext)
{
AppContext.applicationContext = applicationContext;
}
}
SpringService:
public class SpringBeanService
{
private static SpringBeanService instance;
private ApplicationContext applicationContext;
public static synchronized SpringBeanService getInstance()
{
if (instance == null)
{
instance = new SpringBeanService();
}
return instance;
}
public ApplicationContext getApplicationContext()
{
return this.applicationContext;
}
public void setApplicationContext(ApplicationContext applicationContext)
{
this.applicationContext = applicationContext;
}
public UserService getUserService()
{
return (UserService)AppContext.getApplicationContext().getBean("userService");
}
}
ApplicationContext的初始化:
public class ConfigLoadListener implements ServletContextListener
{
public void contextInitialized(ServletContextEvent contextEvent)
{
try
{
WebApplicationContext context =WebApplicationContextUtils.getRequiredWebApplicationContext(contextEvent.getServletContext());
AppContext.setApplicationContext(context);
//读配置
try
{
ServletContext context2=contextEvent.getServletContext();
String path=context2.getInitParameter("setting.properties");
InputStream in =context2.getResourceAsStream(path);
Properties properties = new Properties();
properties.load(in);
GlobalConstant.setCmdbProperties(properties);
in.close();
} catch (IOException e)
{
e.printStackTrace();
}
} catch (HibernateException e)
{
System.out.println("系统无法初始化,异常退出");
System.out.println(e);
}
}
public void contextDestroyed(ServletContextEvent contextEvent)
{
}
}