我的项目中有2个模块：demo和db。我使用Maven和Intellij。演示模块是Spring模块。当我生成jar文件（“全新安装”，“程序包”）并运行演示jar文件（“ java -jar demo-0.0.1-SNAPSHOT.jar”）时，程序在
处中断import numpy as np
import pandas as pd
from multiprocessing import Pool
import threading
#Load the data
df = pd.read_csv('crsp_short.csv', low_memory=False)
def funk(date):
...
# for each date in df.date.unique() do stuff which gives sample dataframe
# as an output
#then write it to file
sample.to_csv('crsp_full.csv', mode='a')
def evaluation(f_list):
with futures.ProcessPoolExecutor() as pool:
return pool.map(funk, f_list)
# list_s is a list of dates I want to calculate function funk for
evaluation(list_s)
例外：
EntityManagerFactory emf = Persistence.createEntityManagerFactory("database");
EntityManager em = emf.createEntityManager();
当我通过Debug启动应用程序时，一切正常。
我的演示pom.xml文件：
2018-12-27 20:47:56.824 WARN 12092 --- [nio-8085-exec-1] org.hibernate.orm.url : HHH10000002: File or directory named by URL [file:/C:/Users/project/demo/target/demo-0.0.1-SNAPSHOT.jar!/BOOT-INF/lib/db-0.0.1-SNAPSHOT.jar] could not be found. URL will be ignored
java.io.FileNotFoundException: C:\Users\project\demo\target\demo-0.0.1-SNAPSHOT.jar!\BOOT-INF\lib\db-0.0.1-SNAPSHOT.jar (System nie mo┐e odnalečŠ okreťlonej ťcie┐ki)
at java.util.zip.ZipFile.open(Native Method) ~[na:1.8.0_181]
at java.util.zip.ZipFile.<init>(Unknown Source) ~[na:1.8.0_181]
at java.util.zip.ZipFile.<init>(Unknown Source) ~[na:1.8.0_181]
at java.util.jar.JarFile.<init>(Unknown Source) ~[na:1.8.0_181]
at java.util.jar.JarFile.<init>(Unknown Source) ~[na:1.8.0_181]
at org.hibernate.boot.archive.internal.JarFileBasedArchiveDescriptor.resolveJarFileReference(JarFileBasedArchiveDescriptor.java:168) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.boot.archive.internal.JarFileBasedArchiveDescriptor.visitArchive(JarFileBasedArchiveDescriptor.java:51) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.boot.archive.scan.spi.AbstractScannerImpl.scan(AbstractScannerImpl.java:47) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.boot.model.process.internal.ScanningCoordinator.coordinateScan(ScanningCoordinator.java:76) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.prepare(MetadataBuildingProcess.java:99) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:232) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:174) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:76) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilder(HibernatePersistenceProvider.java:171) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:119) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:61) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:50) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79) [javax.persistence-api-2.2.jar!/:2.2]
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54) [javax.persistence-api-2.2.jar!/:2.2]
[classes!/:0.0.1-SNAPSHOT]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_181]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_181]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_181]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) [spring-web-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) [spring-web-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) [spring-webmvc-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) [spring-webmvc-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) [spring-webmvc-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) [spring-webmvc-5.1.3.RELEASE.jar!/:5.1.3.RELEASE]
我的数据库pom.xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath/>
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.vaadin.external.google</groupId>
<artifactId>android-json</artifactId>
<version>0.0.20131108.vaadin1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.ex</groupId>
<artifactId>db</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<requiresUnpack>
<dependency>
<groupId>org.jruby</groupId>
<artifactId>jruby-complete</artifactId>
</dependency>
</requiresUnpack>
</configuration>
</plugin>
</plugins>
</build>
</project>
当我注释两行EntityMenagerFactory程序时。