ring中的service之间如何调用

文章作者 100test 发表时间 2007:09:06 13:31:41
来源 100Test.Com百考试题网

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) {
}
}

感觉有点麻烦，有更简便的办法了么？

这篇文章大家可以参考一下，和本文有类似之处：
Struts调用Spring服务类的三种方法