JSP访问类实例

I have requirement like a Java class member variables has to be accessed by 3 or more JSP files. The input to the java class will be a property file. Passing the property file to the constructor will populate the class member variables. This variables will be used by 3 or more JSP files. So instead of creating different instance with same property file, if the instance is once created and if all the JSP can access it, which will be efficient. Currently my idea is making the java class as singleton or other one is create the instance and keep it in a session and let all the jsp to access it. I feel singleton class is more appropriate. Is my decision rite or any other more efficient way is there ?

我有类似Java类成员变量的要求必须由3个或更多JSP文件访问。 java类的输入将是属性文件。将属性文件传递给构造函数将填充类成员变量。这些变量将由3个或更多JSP文件使用。因此,不是使用相同的属性文件创建不同的实例,如果实例是一次创建的,并且所有JSP都可以访问它,这将是有效的。目前我的想法是将java类作为单例或其他人创建实例并将其保存在会话中并让所有jsp访问它。我觉得单身课更合适。是我的决定仪式还是其他任何更有效的方式?

1 个解决方案

#1

I would only advice to keep objects in session which are session dependent. In this case, since you have to make the variable accessible in 3 different jsp's and these values are not dependant on individual request, better to store the object in application context.

我只建议将会话中的对象保持为会话依赖。在这种情况下,由于您必须在3个不同的jsp中访问变量,并且这些值不依赖于单个请求,因此最好将对象存储在应用程序上下文中。

Use ServletContext's getAttribute() and setAttribute() methods.Store the values in Application Scope and you should be done for good.

使用ServletContext的getAttribute()和setAttribute()方法。存储Application Scope中的值,你应该做得很好。

1 个解决方案

#1

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