Java 如何在可执行jar文件中使用JPA?
我有这样的结构:Java 如何在可执行jar文件中使用JPA?,java,jpa,jar,jpa-2.0,executable-jar,Java,Jpa,Jar,Jpa 2.0,Executable Jar,我有这样的结构: xptoapp xptoapp干管 xptoapp核 xptoapp域 包“xptoapp main”的pom.xml如下所示: <?xml version="1.0"?> <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org /xsd/maven-4.0.0.xsd" xmlns="http://mav
- xptoapp
- xptoapp干管
- xptoapp核
- xptoapp域
<?xml version="1.0"?>
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org /xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org /2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.xpto</groupId>
<artifactId>xptoapp</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>xptoapp-main</artifactId>
<name>xptoapp-main</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.xpto</groupId>
<artifactId>xptoapp-domain</artifactId>
<version>${version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.xpto</groupId>
<artifactId>xptoapp-core</artifactId>
<version>${version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
4.0.0
com.xpto
xptoapp
1.0-快照
xptoapp干管
xptoapp干管
http://maven.apache.org
UTF-8
com.xpto
xptoapp域
${version}
假如
com.xpto
xptoapp核
${version}
假如
在“xptoapp域”项目中,我有一个META-INF/persistence.xml。我应该在项目“xptoapp app”(META-INF文件夹)中放入persistence.xml吗 当我尝试执行“java-jar xpto app.jar”时,我遇到了一个异常:
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)
Caused by: javax.persistence.PersistenceException: Unable to configure EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:385)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47)
at com.xpto.domain.persistence.PersistenceManager.<init>(PersistenceManager.java:14)
at com.xpto.app.App.main(App.java:30)
... 5 more
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(Unknown Source)
at org.hibernate.ejb.packaging.JarVisitorFactory.getJarURLFromURLEntry(JarVisitorFactory.java:57)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:351)
... 10 more
线程“main”java.lang.reflect.InvocationTargetException中的异常
在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)处
位于sun.reflect.NativeMethodAccessorImpl.invoke(未知源)
在sun.reflect.DelegatingMethodAccessorImpl.invoke处(未知源)
位于java.lang.reflect.Method.invoke(未知源)
位于org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)
原因:javax.persistence.PersistenceException:无法配置EntityManagerFactory
位于org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:385)
位于org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55)
位于javax.persistence.persistence.createEntityManagerFactory(persistence.java:63)
位于javax.persistence.persistence.createEntityManagerFactory(persistence.java:47)
位于com.xpto.domain.persistence.PersistenceManager。(PersistenceManager.java:14)
位于com.xpto.app.app.main(app.java:30)
... 还有5个
原因:java.lang.StringIndexOutOfBoundsException:字符串索引超出范围:-1
位于java.lang.String.substring(未知源)
位于org.hibernate.ejb.packaging.JarVisitorFactory.getJarURLFromURLEntry(JarVisitorFactory.java:57)
位于org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:351)
... 10多
如何在我的案例中使用JPA?为什么我会得到这个例外 persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="xptoapp" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>com.xpto.domain.entity.Account</class>
<class>com.xpto.domain.entity.Transfer</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.hsqldb.jdbcDriver" />
<property name="javax.persistence.jdbc.url" value="jdbc:hsqldb:mem:xptoapp" />
<property name="javax.persistence.jdbc.user" value="sa" />
<property name="javax.persistence.jdbc.password" value="" />
<property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="hibernate.show_sql" value="false" />
</properties>
</persistence-unit>
</persistence>
org.hibernate.ejb.HibernatePersistence
com.xpto.domain.entity.Account
com.xpto.domain.entity.Transfer
已修复。问题出在eclipse导出我的jar的那一刻。它将META-INF文件夹放在一个名为“资源”的文件夹中
谢谢大家。JPA要求您包括一个持久性提供程序框架。通常这是由Hibernate或JavaEE完成的。看起来错误在persistence.xml中。。。你也得把它发出去。@JimGarrison我已经发了。。。你能看到pastebin吗?粘贴到此处太长:(不确定21行XML怎么会太长,无法粘贴到此处。已编辑。哦,我的错误。抱歉..我正在尝试添加逗号。抱歉!