English 中文(简体)
有没有其他方法可以从JSP中的bean中获取属性?
原标题:Is there any other way to get property from bean in JSP?

如果我想从bean中获取属性并将其用于某些Java代码。例如,获取访问者计数,但不输出,仅用于其他用途。我不能使用,因为它将输出值。

如何获取属性而不输出?

最佳回答

您可以将属性设置为任何变量,然后可以对其进行处理。

<c:set var="name" scope="scope" value="expression"/>

例如:

<c:set var="visitorCount" scope="scope" value="someBean.counter"/>

甚至你也可以在不设置的情况下处理它

问题回答

此示例检索会话范围的bean,并使用id myBean使其可用。虽然在jsp代码中使用scriptlet不是一个好的做法,但一种方法是调用bean上的任何方法,如下所示。

<jsp:useBean id="myBean" class="com.mycompany.MyBean" scope="session" />

<% myBean.getprop1(); %>

<jsp:useBean id ="object instance" class="full qualified path of ur class" scope="according to need"/> <jsp:getProperty name="same as id" property="name of the property"/>

根据这个使用u必须在不使用脚本的情况下获得ur结果。。。。





相关问题
Spring Properties File

Hi have this j2ee web application developed using spring framework. I have a problem with rendering mnessages in nihongo characters from the properties file. I tried converting the file to ascii using ...

Logging a global ID in multiple components

I have a system which contains multiple applications connected together using JMS and Spring Integration. Messages get sent along a chain of applications. [App A] -> [App B] -> [App C] We set a ...

Java Library Size

If I m given two Java Libraries in Jar format, 1 having no bells and whistles, and the other having lots of them that will mostly go unused.... my question is: How will the larger, mostly unused ...

How to get the Array Class for a given Class in Java?

I have a Class variable that holds a certain type and I need to get a variable that holds the corresponding array class. The best I could come up with is this: Class arrayOfFooClass = java.lang....

SQLite , Derby vs file system

I m working on a Java desktop application that reads and writes from/to different files. I think a better solution would be to replace the file system by a SQLite database. How hard is it to migrate ...

热门标签