Question

有很多这样的线程已经出现了类似的错误，但没有一个解决了我的问题，所以经过一个小时的尝试调试之后，我决定寻求帮助。

背景

我正在设置一个Java EE项目。我创建了一个企业应用程序，并创建了一个EJB项目，JPA项目和Web项目，并将EAR添加到企业项目中。

我还在mysql-connector-java-5.1.0-bin文件夹中添加了JBOSS/standalone/deployments。并将此jar文件添加到JPA项目中。

有关如何解决错误的任何建议都会非常感激。

主要错误是：

 missing/unavailable dependencies" =>   
    ["jboss.persistenceunit.\"SIMSProject.ear#primary\"jboss.naming.context.java.jboss.datasources.SIMSD

以下是我的完整错误：

Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver from [Module "org.hibernate:main" from local module loader @32008dad (roots: C:\Users\Bawn92\Desktop\Programs\jboss-as-7.1.1.Final\modules)]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
    at java.lang.Class.forName0(Native Method) [rt.jar:1.7.0_07]
    at java.lang.Class.forName(Class.java:186) [rt.jar:1.7.0_07]
    at org.hibernate.internal.util.ReflectHelper.classForName(ReflectHelper.java:192)
    at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:101)
    ... 23 more

01:50:40,265 INFO  [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS015870: Deploy of deployment "SIMSProject.ear" was rolled back with failure message {"JBAS014671: Failed services" => {"jboss.persistenceunit.\"SIMSProject.ear#SIMSJPA\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"SIMSProject.ear#SIMSJPA\": Failed to start service"},"JBAS014771: Services with missing/unavailable dependencies" => ["jboss.persistenceunit.\"SIMSProject.ear#primary\"jboss.naming.context.java.jboss.datasources.SIMSDBMissing[jboss.persistenceunit.\"SIMSProject.ear#primary\"jboss.naming.context.java.jboss.datasources.SIMSDB]"]}
01:50:40,296 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-2) JBAS015877: Stopped deployment SIMSWebProject.war in 31ms
01:50:40,296 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-4) JBAS015877: Stopped deployment SIMSEJB.jar in 31ms
01:50:40,309 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-4) JBAS015877: Stopped deployment SIMSProject.ear in 44ms
01:50:40,312 INFO  [org.jboss.as.controller] (DeploymentScanner-threads - 2) JBAS014774: Service status report
JBAS014777:   Services which failed to start:      service jboss.persistenceunit."SIMSProject.ear#SIMSJPA": org.jboss.msc.service.StartException in service jboss.persistenceunit."SIMSProject.ear#SIMSJPA": Failed to start service

01:50:40,316 ERROR [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) {"JBAS014653: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"JBAS014671: Failed services" => {"jboss.persistenceunit.\"SIMSProject.ear#SIMSJPA\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"SIMSProject.ear#SIMSJPA\": Failed to start service"},"JBAS014771: Services with missing/unavailable dependencies" => ["jboss.persistenceunit.\"SIMSProject.ear#primary\"jboss.naming.context.java.jboss.datasources.SIMSDBMissing[jboss.persistenceunit.\"SIMSProject.ear#primary\"jboss.naming.context.java.jboss.datasources.SIMSDB]"]}}}

我的-ds.xml是：

<?xml version="1.0" encoding="UTF-8"?>
<datasources xmlns="http://www.jboss.org/ironjacamar/schema">
<datasource jndi-name="java:jboss/datasources/SIMSDB" enabled="true" 
 use-java-context="true" pool-name="SIMSDB">
 <connection-url>jdbc:mysql://localhost:3306/mydb</connection-url>
<driver>mysql-connector-java-5.1.0-bin.jar</driver>
<pool></pool>
<security>
<user-name>root</user-name>
<password>nbuser</password>
</security>
</datasource>
</datasources>

我的persistence.xml文件是：

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
   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">
   <persistence-unit name="primary">

      <jta-data-source>java:jboss/datasources/SIMSDB</jta-data-source>
      <properties>

         <property name="hibernate.show_sql" value="false" />
      </properties>
   </persistence-unit>
    <persistence-unit name="SIMSJPA">
        <class>model.Class</class>
        <class>model.Subject</class>
        <class>model.Teacher</class>
        <properties>
           <!--   //i put in dialect line  -->
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
            <property name="hibernate.connection.username" value="root"/>
            <property name="hibernate.connection.password" value="nbuser"/>
            <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/mydb"/>
            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
        </properties>
    </persistence-unit>
</persistence>

我的独立文件的数据部分是：

<datasource jndi-name="java:jboss/datasources/SIMSDB" pool-name="SIMSDB">
                <connection-url>jdbc:mysql://localhost:3306/mydb</connection-url>
                <driver>mysql-connector-java-5.1.0-bin.jar</driver>
                <transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
                <pool>
                    <min-pool-size>10</min-pool-size>
                    <max-pool-size>100</max-pool-size>
                    <prefill>true</prefill>
                </pool>
                <security>
                    <user-name>test</user-name>
                    <password>test</password>
                </security>
                <statement>
                    <prepared-statement-cache-size>32</prepared-statement-cache-size>
                    <share-prepared-statements/>
                </statement>
                </datasource>
            <drivers>
            <driver name="com.mysql" module="com.mysql">
            <xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
            </driver>
    </drivers>

Answer 1

您需要创建MySQL驱动程序模块。如果您按照以下方式创建它，JBoss 7将能够使用：

下载驱动程序（jar文件）
在您的服务器路径中创建目录：{$ jboss-home} / modules / com / mysql / main 并将驱动程序jar文件粘贴到此处
在同一文件夹中创建和新文件module.xml
在该module.xml中插入以下代码（如果您的jar文件名为mysql.jdbc.jar）：

<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.0" name="com.mysql">
    <resources>
        <resource-root path="mysql.jdbc.jar"/>  
    </resources>
    <dependencies>
    <module name="javax.api"/>
    <module name="javax.transaction.api"/>
    </dependencies>
</module>

确保mysql.jdbc.jar的依赖项正常。

JBoss 7不再使用-ds.xml。你已经在standalon.xml中为你的数据库做了设置，这是正确的方法。只需确保您的迁移正确无误。我看到你有不同的用户名和密码...

EDIT1：

我不知道hibernate如何与JBoss 7一起使用。

但我发现你应该尝试改变你的persistence.xml

<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>

到

<property name="hibernate.connection.driver_class" value="com.mysql"/>

因为您使用com.mysql作为模块名称。否则，您可以将模块名称更改为com.mysql.jdbc.Driver。

在standalone.xml中变化

<driver>mysql-connector-java-5.1.0-bin.jar</driver>

到

<driver>com.mysql</driver>

因为您将com.mysql作为驱动程序的名称：

<driver name="com.mysql" module="com.mysql">

JBOSS 7 MYSQL缺少依赖项错误

1 个答案: