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Javascript 无法引用非java core class #296

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jianwu opened this issue Oct 31, 2020 · 1 comment · May be fixed by #297

jianwu commented Oct 31, 2020 •

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非常喜欢js的功能。不过有一个问题，就是在javascript里，只能访问core javaclass，比如：
var pi = Packages.java.lang.Math.PI

不过非java core class就访问不到了，
比如：
var pi = Packages.org.apache.commons.lang3.math. NumberUtils .BYTE_MINUS_ONE

我已经确认classload可以load这个class。从源码里，看不到block这些class，不知是什么原因？

不知是不是我的server的secruity manager的问题？

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jianwu commented Nov 1, 2020

做了一些研究，发现是classloader的问题，javascript engine 缺省使用：thread context classloader。不可以访问applicaton class loader。参考：https://stackoverflow.com/questions/30225398/java-8-scriptengine-across-classloaders/30251930#30251930

我在我本地fix了这个问题，加一个class loader的选项。发一个PR

jianwu linked a pull request

that will close this issue

Support custom ClassLoader for JavascriptCommand '-l' #297

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