[Solved] Using Java to call jython Error: URI is not hierarchical

Due to the need to use Jython. However, a strange phenomenon is found. There is no problem with the use of IDE, but the error is reported when packaging the jar.

java.lang.IllegalArgumentException: URI is not hierarchical
        at java.io.File.<init>(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.<init>(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. Problem finding

Debug and trace Jython using IDE and remote call respectively, and locate the error line of the code:

IDE debugging found that the URL is as follows: 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

Remote debugging

Nesting cannot be used.

3. Solution:

Jython will be Deleted when Maven is packaged; Just load the external jar package at runtime.

eliminate:

<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<version>2.2.10.RELEASE</version>
				<configuration>
					<layout>ZIP</layout>
					<!--Removing dependencies that do not change in the production environment are separated by commas,-->
					<excludeGroupIds>
						org.python
					</excludeGroupIds>
				</configuration>
			</plugin>
		</plugins>
	</build>

function:

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

Inside lib is the jar package. At this time, the operation is completely normal