问题描述
我正在使用带有2个模块的Maven在EAR项目中工作.图片胜于雄辩,所以让我向您展示其结构:
I`m working in a EAR project with Maven which has 2 modules. Images speaks louder than words, so let me show you the structure:
sigea-model
包含模型,存储库和服务层( MVC 中的"M" ). sigea-web
包含网页和控制器bean( VC ),sigea-ear
只是将其他2个模块打包为EAR
包的包装.
sigea-model
contains model, repository and service layers (The "M" in MVC). sigea-web
contains web pages and controller beans (VC) and sigea-ear
is just a wrapper to package the other 2 modules in a EAR
package.
如您所见,sigea-ear
有一个空的META-INF
文件夹. sigea-model
和sigea-web
中的两个beans.xml
文件都只是空标记文件,因为默认情况下AFAIK,CDI会在所有带注释的类中进行搜索(但这不是现在的问题). persistence.xml
是一个简单的文件,它使用带有连接池的JTA事务(之所以起作用,是因为我从Glassfish的管理控制台ping并成功).
As you can see, sigea-ear
has an empty META-INF
folder. Both beans.xml
files in sigea-model
and sigea-web
are just empty marker files because AFAIK, CDI by default search in all annotated classes (but this is not the problem right now). persistence.xml
is a simple file which uses JTA transactions with a connection pool (which is working because I ping from the Glassfish's admin console and is successful).
最后,当我打包应用程序时,我得到以下信息:
Finally, when I package the application I get the following:
如您所见,没有persistence.xml
.所有这些都是因为我成功部署了应用程序而出现的,但是在第一次单击中我得到了异常
As you can see, there's no persistence.xml
. All this came out because I deployed the application successfully but in the first click I got the Exception
javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean
...
Caused by: java.lang.IllegalStateException: Unable to retrieve EntityManagerFactory for unitName null
这是我的pom
文件:
<project ...>
<modelVersion>4.0.0</modelVersion>
<groupId>ar.edu.unt.sigea</groupId>
<artifactId>sigea-app</artifactId>
<version>1.0</version>
<packaging>pom</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<modules>
<module>sigea-model</module>
<module>sigea-web</module>
<module>sigea-ear</module>
</modules>
<build>
<pluginManagement>
...
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<!-- I suppress some lines for brevity -->
<dependencies>
<dependency>
<artifactId>sigea-model</artifactId>
</dependency>
<dependency>
<artifactId>sigea-model</artifactId>
<type>ejb</type>
</dependency>
<dependency>
<artifactId>sigea-model</artifactId>
<type>test-jar</type>
<scope>test</scope>
</dependency>
<dependency>
<artifactId>sigea-web</artifactId>
<type>war</type>
</dependency>
<dependency>
<artifactId>sigea-web</artifactId>
<type>pom</type>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
...
</dependencies>
</project>
pom.xml [sigea-ear]
<project ...>
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ar.edu.unt.sigea</groupId>
<artifactId>sigea-app</artifactId>
<version>1.0</version>
</parent>
<artifactId>sigea-ear</artifactId>
<packaging>ear</packaging>
<dependencies>
<dependency>
<artifactId>sigea-model</artifactId>
<type>ejb</type>
</dependency>
<dependency>
<artifactId>sigea-web</artifactId>
<type>war</type>
</dependency>
<dependency>
<artifactId>sigea-web</artifactId>
<type>pom</type>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ear-plugin</artifactId>
<configuration>
<defaultLibBundleDir>lib/</defaultLibBundleDir>
<skinnyWars>true</skinnyWars>
<modules>
<webModule>
<groupId>${project.groupId}</groupId>
<artifactId>sigea-web</artifactId>
<contextRoot>/sigea</contextRoot>
</webModule>
<ejbModule>
<groupId>${project.groupId}</groupId>
<artifactId>sigea-model</artifactId>
</ejbModule>
</modules>
</configuration>
</plugin>
</plugins>
</build>
</project>
pom.xml [sigea-web]
<project ...>
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>sigea-app</artifactId>
<groupId>ar.edu.unt.sigea</groupId>
<version>1.0</version>
</parent>
<groupId>ar.edu.unt.sigea</groupId>
<artifactId>sigea-web</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>sigea-web</name>
<dependencies>
<!-- Some dependencies including sigea-model -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<packagingExcludes>WEB-INF/lib/*.jar</packagingExcludes>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
pom.xml[sigea-model]
并不重要,因为它仅定义了一些用于测试的依赖项,并被配置为生成带有测试类的程序包,这些类在sigea-web
中也用于测试目的.
pom.xml[sigea-model]
is not important as it just defines some dependencies for test and is configured to generate a package with the test classes, which are used in sigea-web
for test purposes also.
最后一个问题:我的配置中没有打包persistence.xml
文件的问题是什么?如果上述显示的消息不是IllegalStateException
的问题,则是什么:是该异常的可能原因?
Finally the question: What's failing in my configuration that doesn't package the persistence.xml
file? If that's not the problem for the IllegalStateException
with the message shown above: What are posible causes for that exception?
预先感谢您的回答.
推荐答案
我通过更改依赖关系解决了该问题.在sigea-model
我有
I solved the problem by changing a dependency. In sigea-model
I had
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.1.0.Final</version>
<scope>test</scope>
</dependency>
过去我曾为我的测试方法管理持久性上下文.我没有t inquire very much in the Glassfish JPA provided implementation but maybe it's Eclipse Link instead of Hibernate. Apparently there are some incompatibility issue between those libraries. I moved
hibernate-entitymanager`来编译作用域,像这样:
Which I used to manage the persistence context for my test methods. I didnt inquire very much in the Glassfish JPA provided implementation but maybe it's Eclipse Link instead of Hibernate. Apparently there are some incompatibility issue between those libraries. I moved
hibernate-entitymanager` to compile scope, like this:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.1.0.Final</version>
</dependency>
现在,项目编译就没有问题了. khmarbaise 所做的评论也很有用,它简化了项目配置,非常感谢.
And now the projects compile with no problem. It was also useful the comment made by khmarbaise, it simplified the project configuration, thank you very much.
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