Java 8 Javascript 引擎向后兼容性
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Java 8 Javascript Engine backwards compatibility
提问by nikkatsa
I am trying out Java 8 in my project and I am stuck in an error related to my build process.
我正在我的项目中试用 Java 8，但遇到了与我的构建过程相关的错误。
I am using ANT scripts and at some point i am using some javascript (embeded into ANT) to do some build specific operations. The part of the script that is causing the error looks like below:
我正在使用 ANT 脚本，并且在某些时候我正在使用一些 javascript（嵌入到 ANT 中）来执行一些特定于构建的操作。导致错误的脚本部分如下所示：
<script language="javascript">
<![CDATA[
importClass(java.io.File);
importClass(java.io.FileReader);
...
]]>
</script>
The project is building fine with Java 7 or Java 6, but it gives me some errors when i am using Java 8. These errors are related to the upgrade of the JS engine.
该项目使用 Java 7 或 Java 6 构建得很好，但是当我使用 Java 8 时它给了我一些错误。这些错误与 JS 引擎的升级有关。
In particular i am getting the following exception:
特别是我收到以下异常：
javax.script.ScriptException: ReferenceError: "importClass" is not defined in at line
javax.script.ScriptException: ReferenceError: "importClass" is not defined in at line
After some googling i found out that it is related to the below issue in the JDK
经过一番谷歌搜索后，我发现它与 JDK 中的以下问题有关
I tried what is suggested in the comments but without luck.
我尝试了评论中的建议，但没有运气。
How can I make Java 8 Nashorn engine to be compatible with the Rhino JS engine?
如何使 Java 8 Nashorn 引擎与 Rhino JS 引擎兼容？
采纳答案by wickund
One approach is to include
一种方法是包括
load("nashorn:mozilla_compat.js");
which supplies importClass.
它提供 importClass。
On the other hand, you can use java.io.File, java.io.FileReader, ... directly without importing.
另一方面，您可以直接使用 java.io.File, java.io.FileReader, ... 无需导入。
var File = java.io.File;
var FileReader = java.io.FileReader;
This is backward compatible with Rhino.
这与 Rhino 向后兼容。
