如何在jsp中获取JAVA_OPTS值 [英] How to get JAVA_OPTS value in jsp

问题描述

我正在尝试在jsp文件中的catalina.bat中定义JAVA_OPTS值.有人可以告诉我该怎么做.

I am trying to get JAVA_OPTS value defined in catalina.bat in a jsp file. Can someone tell me how to do that.

例如:我在catalina.bat中的JAVA_OPTS定义就像

For Example: My JAVA_OPTS definition in catalina.bat is like

JAVA_OPS = -DMyProjectHome = D:\ Projects

JAVA_OPS= -DMyProjectHome=D:\Projects

我想在运行时在jsp文件中获取MyProjectHome的值，所以我想做的是$ {MyProjectHome}，但它什么也没做.

I want to have the value of MyProjectHome at run time in jsp file so I am trying to do is ${MyProjectHome} but it is doing nothing.

或者有一种方法可以在

请帮助我实现功能.

谢谢.

推荐答案

您使用-Dfoo=bar传递给JVM的内容称为系统属性.您可以使用

what you pass to a JVM with -Dfoo=bar is called a system property. You can get their value using System.getProperty(). There is no standard tag or JSP EL syntax to get them, though, so you'll have to use scriptlet or implement a custom tag.

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