在 WildFly 中找不到 Nashorn 类 [英] Nashorn class not found in WildFly

问题描述

我需要在 WildFly 中运行的 Web 应用程序中从 nashorn 访问内部类.

I need to access an internal class from nashorn inside a web application running in WildFly.

以下代码在我的机器上运行良好:

The following code is working fine in my machine:

public class NashornTest {
    public static void main(String[] args) throws ClassNotFoundException {
        Class<?> cls = Class.forName("jdk.nashorn.internal.objects.ScriptFunctionImpl");
        System.out.println(cls);
    }
}

但是当我在 WildFly 中运行时，以下 servlet 抛出 ClassNotFoundException:

But the following servlet is throwing a ClassNotFoundException when I run inside WildFly:

@WebServlet("/nashorn")
public class NashornServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        Class<?> cls = null;
        try {
            cls = Class.forName("jdk.nashorn.internal.objects.ScriptFunctionImpl");
        } catch (ClassNotFoundException e) {
            throw new ServletException(e);
        }
    }
}

这是服务器日志:https://gist.github.com/csokol/b81633bdbfa09bb55e2b

推荐答案

看起来 nashorn 使用的所有包/类都存在疏忽.

Looks like there was an oversight in what all packages / classes nashorn uses.

您需要打开 WILDFLY_HOME/modules/system/layers/base/sun/jdk/main/module.xml文件并添加

You will need to open WILDFLY_HOME/modules/system/layers/base/sun/jdk/main/module.xml file and add

<path name="jdk/nashorn/api/scripting"/>
<path name="jdk/nashorn/api/scripting/resources"/>
<path name="jdk/nashorn/internal/codegen"/>
<path name="jdk/nashorn/internal/codegen/types"/>
<path name="jdk/nashorn/internal/ir"/>
<path name="jdk/nashorn/internal/ir/annotations"/>
<path name="jdk/nashorn/internal/ir/debug"/>
<path name="jdk/nashorn/internal/ir/visitor"/>
<path name="jdk/nashorn/internal/lookup"/>
<path name="jdk/nashorn/internal/objects"/>
<path name="jdk/nashorn/internal/objects/annotations"/>
<path name="jdk/nashorn/internal/parser"/>
<path name="jdk/nashorn/internal/runtime"/>
<path name="jdk/nashorn/internal/runtime/arrays"/>
<path name="jdk/nashorn/internal/runtime/linker"/>
<path name="jdk/nashorn/internal/runtime/options"/>
<path name="jdk/nashorn/internal/runtime/regexp"/>
<path name="jdk/nashorn/internal/runtime/regexp/joni"/>
<path name="jdk/nashorn/internal/runtime/resources"/>
<path name="jdk/nashorn/internal/runtime/resources/fx"/>
<path name="jdk/nashorn/internal/runtime/scripts"/>
<path name="jdk/nashorn/internal/tools"/>
<path name="jdk/nashorn/internal/tools/resources"/>
<path name="jdk/internal/dynalink"/>
<path name="jdk/internal/dynalink/beans"/>
<path name="jdk/internal/dynalink/linker"/>
<path name="jdk/internal/dynalink/support"/>

以及可能丢失的任何其他路径/包.

and any other path/package that might be missing.

作为参考，这是这个文件在 8.x 中的样子 分支

for reference, this is how this file looks in 8.x branch

我还在 WildFly master 和 8.x 分支

I also created Pull requests to fix this in WildFly master and 8.x branch

这篇关于在 WildFly 中找不到 Nashorn 类的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！