MVEL2在Android抛出异常 [英] MVEL2 on android throws exception

问题描述

有没有任何人有MVEL2经验，在Android上？

Did anyone has experience with MVEL2 on android?

我已经尝试了同样的code用一个简单的java程序，稍后机器人：

i've tried out the same code with a simple java program and later on android:

在Android上执行以下抛出异常：

The following exception is thrown when executed on android:

E/AndroidRuntime(30793): java.lang.ExceptionInInitializerError

我试图从MVEL网站的例子：

I tried the example from the mvel website:

String template = "Hello, my name is @{name.toUpperCase()}";
Map vars = new HashMap();
vars.put("name", "Michael");
System.out.println(TemplateRuntime.eval(template, vars));

如果世界上没有其他解决方案，任何人都可以提出一个模板引擎，采用Android工程 并支持迭代？

If theres no solution could anyone suggest a template engine which works with android and supports iteration?

推荐答案

MVEL2试图串系统java.version属性初始化解析器时，前3个字符，和Android下的版本为0。这会导致一堆异常最终导致的ExceptionInInitializerError。

MVEL2 tries to substring the first 3 characters of the system java.version property when initializing the parser, and under Android the version is 0. That causes a bunch of exceptions which eventually cause the ExceptionInInitializerError.

如果您想强制java.version属性，你可以简单地自行设置：

If you want to force the java.version property, you can simply set it yourself:

System.setProperty("java.version", "1.6");

我不知道是什么样的奇怪的副作用，这可能会导致为Android，但至少它得到了MVEL解析器和运行而没有抛出异常！

I have no idea what kind of odd side effects this may cause for Android, but at least it gets the MVEL parser up and running without throwing exceptions!

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