Jython 2.7.2中提示URI is not hierarchical怎么办

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1 .背景

由于需要使用Jython。但是发现一个诡异的现象IDE使用没有问题，但是打包jar报错。

            Properties props = new Properties();            props.put("python.home","D:\\jython2.7.2");            props.put("python.path","D:\\jython2.7.2\\Lib\\site-packages");            props.put("python.console.encoding", "UTF-8"); // Used to prevent: console: Failed to install '': java.nio.charset.UnsupportedCharsetException: cp0.            props.put("python.security.respectJavaAccessibility", "false"); //don't respect java accessibility, so that we can access protected members on subclasses            props.put("python.import.site","false");            //props.put("python.cachedir.skip","true");            props.put("org.python.netty.noUnsafe","true");            Properties preprops = System.getProperties();            PythonInterpreter.initialize(preprops, props, new String[0]);// 此处报异常            PythonInterpreter pyInterp = new PythonInterpreter();

java.lang.IllegalArgumentException: URI is not hierarchical        at java.io.File.(File.java:418)        at org.python.core.PrePy.getJarFileNameFromURL(PrePy.java:427)        at org.python.core.PrePy._getJarFileName(PrePy.java:362)        at org.python.core.PrePy.getJarFileName(PrePy.java:345)        at org.python.core.PySystemState.doInitialize(PySystemState.java:1195)        at org.python.core.PySystemState.initialize(PySystemState.java:1130)        at org.python.core.PySystemState.initialize(PySystemState.java:1085)        at org.python.core.PySystemState.initialize(PySystemState.java:1080)        at org.python.util.PythonInterpreter.initialize(PythonInterpreter.java:63)        at com.langtutu.ncs.api.robot.core.Test.(Test.java:34)        at com.langtutu.ncs.api.service.impl.HomestaySchedulingServiceImpl.DownOrderTest(HomestaySchedulingServiceImpl.java:90)        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)        at java.lang.reflect.Method.invoke(Method.java:498)        at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:84)        at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)        at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93)        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)        at java.util.concurrent.FutureTask.run(FutureTask.java:266)        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

2. 问题查找

使用IDE和远程调用分别调试跟踪了一下jython，定位到代码报错行：

• IDE调试 发现url是如下的： jar:file:/D:/maven/apache-maven-3.3.9/repository/org/python/jython/2.7.2/jython-2.7.2.jar!/org/python/core/PrePy.class

• 远程调试

嵌套不能用。

3. 解决方案：

maven打包时候将jython剔除；运行时候加载外部jar包即可。

剔除：

                                                                        org.springframework.boot                                spring-boot-maven-plugin                                2.2.10.RELEASE                                                                        ZIP                                                                                                                                org.python                                                                                                                        

运行：

java -Dloader.path="lib/" -jar .\ncsapi-0.0.1-SNAPSHOT.jar

lib里面就是jar包。此时运行完全正常

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