Jython2.7.2中提示URIisnothierarchical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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