如何识别在ColdFusion下运行的是什么版本的jar

问题描述

如何将jar文件更新到coldfusion安装的最新版本？我可以看到jar文件，用不同的版本，在不同的位置。如何确认当前运行的jar版本和ColdFusion查找这些jar的位置？

例如，在 coldfusion \lib 我有这些jar：

• commons-collections.jar


• 3.1.jar


• commons-collections.3.2.jar

> \Coldfusion\ffusion\lib ，我有：

• commons-collections.jar

感谢您提供任何帮助或建议。

解决方案

block

一般来说，（仅限CF10 + li>

通常可以，挑选一个类可能存在的所有版本的库，并检查它。对于该特定库，可能是一个不错的选择，因为API说它自从1.0版本开始存在。

  //创建实例
 testClass = createObject（java，org.apache.commons.collections.CollectionUtils ）.getClass（）; 
 //将类名转换为格式：/path/to/TheClassName.class 
 className =/& replace（testClass.name，。，/，all）&。 
 //显示位置，如果未知
，则为nulllocation = testClass.getResource（className）; 
 writeOutput（isNull（location）？null：location.toString（））; 
  

结果显然会有所不同，但是在安装ColdFusion 11后，

commons-collections-3.2.1.jar ！/ org / apache / commons / collections / CollectionUtils.class

How can I update the jar files to the latest version which comes with coldfusion installation? I can see jar files, with different versions, under different locations. How can I confirm which version of the jar is currently running and what are the locations ColdFusion looks for these jars?

For example, in coldfusion\lib I have these jars:

• commons-collections.jar
• commons-collections.3.1.jar
• commons-collections.3.2.jar

Then in another location \Coldfusion\cfusion\lib, I have:

• commons-collections.jar

Thanks in advance for any help or suggestions.

解决方案

Generally, ColdFusion searches the following locations for jars:

• ColdFusion Class Path (See ColdFusion Administrator > Server Settings > Java & JVM).
• Default JVM class path
• Dynamic paths specified in THIS.javaSettings (CF10+ only)

Usually you can identify the source jar by picking a class likely to exists all versions of that library and checking it with Class.getResource(). For that specific library, CollectionUtils would probably be a good choice, since the API says it has existed since version 1.0.

 // Create instance
 testClass = createObject("java", "org.apache.commons.collections.CollectionUtils").getClass();
 // Convert class name to format:  /path/to/TheClassName.class
 className = "/"& replace( testClass.name, ".", "/", "all") &".class";
 // Display location, or "null" if unknown
 location = testClass.getResource( className );
 writeOutput(  isNull(location) ? "null" : location.toString());

The results will obviously vary, but with my ColdFusion 11 install, the above returns:

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