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我正在使用 jython 库（jython-standalone-2.7-b3）从 Java 执行 python 脚本。我唯一的目的是能够从我的 java 代码中触发和执行 python 脚本文件。我能够正确地编写独立的主类并且事情进展顺利。现在我将相同的代码放在我的应用程序中（在我的应用程序服务器中），现在对于相同的脚本，我在每个阶段都会遇到错误。它说找不到一些模块等。但是让我更加困惑的是，当我从主类再次尝试时，相同的代码和脚本执行得很好。运行环境是否必须注入任何东西才能使其运行..

使用的代码片段

    public void executeScript(String inputFile, String outputFile) throws FileNotFoundException {
    final PythonInterpreter inter = new PythonInterpreter(null, new PySystemState());
    Writer writer = null;
    writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile)));
    inter.setOut(writer);
    inter.execfile(inputFile);
}

我得到的例外是

File "/data/WorkArea/anoj/APPNEW/com.anoj.commons.core/lib/jython-standalone-2.7-b3.jar/Lib/posixpath.py", line 392, in normpath

AttributeError：“NoneType”对象没有属性“startswith”

at org.python.core.Py.AttributeError(Py.java:177)
at org.python.core.PyObject.noAttributeError(PyObject.java:946)
at org.python.core.PyObject.__getattr__(PyObject.java:941)
at posixpath$py.normpath$27(/data/WorkArea/anoj/APPNEW/com.anoj.commons.core/lib/jython-standalone-2.7-b3.jar/Lib/posixpath.py:412)
at posixpath$py.call_function(/data/WorkArea/anoj/APPNEW/com.anoj.commons.core/lib/jython-standalone-2.7-b3.jar/Lib/posixpath.py)
    at org.python.core.PyTableCode.call(PyTableCode.java:166)
at org.python.core.PyBaseCode.call(PyBaseCode.java:137)
at org.python.core.PyFunction.__call__(PyFunction.java:347)
at sysconfig$py.f$0(/data/WorkArea/anoj/APPNEW/com.anoj.commons.core/lib/jython-standalone-2.7-b3.jar/Lib/sysconfig.py:712)
at sysconfig$py.call_function(/data/WorkArea/anoj/APPNEW/com.anoj.commons.core/lib/jython-standalone-2.7-b3.jar/Lib/sysconfig.py)
at org.python.core.PyTableCode.call(PyTableCode.java:166)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.imp.createFromCode(imp.java:393)
at org.python.core.util.importer.importer_load_module(importer.java:109)
at org.python.modules.zipimport.zipimporter.zipimporter_load_module(zipimporter.java:161)
at org.python.modules.zipimport.zipimporter$zipimporter_load_module_exposer.__call__(Unknown Source)
at org.python.core.PyBuiltinMethodNarrow.__call__(PyBuiltinMethodNarrow.java:47)
at org.python.core.imp.loadFromLoader(imp.java:520)
at org.python.core.imp.loadFromLoader(imp.java:520)

请帮忙..

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