在persistence.xml中使用JNDI名称引用数据源

所以我使用Wildfly 8.2.0.Final在persistence.xml中使用JNDI名称引用数据源

我成功创建了我的MySQL数据源。证明：从管理控制台，我做“测试连接”，它会给出

成功连接到数据库MyAppDS。

在独立-full.xml的数据源定义：

<datasources> 
     <datasource jta="true" jndi-name="java:/jdbc/MyAppDS" pool-name="MyAppDS" enabled="true" use-ccm="true"> 
      <connection-url>jdbc:mysql://localhost:3306/myapp</connection-url> 
      <driver-class>com.mysql.jdbc.Driver</driver-class> 
      <driver>mysql</driver> 
      <security> 
       <user-name>root</user-name> 
      </security> 
      <validation> 
       <validate-on-match>false</validate-on-match> 
       <background-validation>false</background-validation> 
      </validation> 
      <timeout> 
       <set-tx-query-timeout>false</set-tx-query-timeout> 
       <blocking-timeout-millis>0</blocking-timeout-millis> 
       <idle-timeout-minutes>0</idle-timeout-minutes> 
       <query-timeout>0</query-timeout> 
       <use-try-lock>0</use-try-lock> 
       <allocation-retry>0</allocation-retry> 
       <allocation-retry-wait-millis>0</allocation-retry-wait-millis> 
      </timeout> 
      <statement> 
       <share-prepared-statements>false</share-prepared-statements> 
      </statement> 
     </datasource> 
     <drivers> 
      <driver name="mysql" module="com.mysql"> 
       <xa-datasource-class>com.mysql.jdbc.Driver</xa-datasource-class> 
      </driver> 
     </drivers> 
    </datasources>

我的persistence.xml

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> 
    <persistence-unit name="myapp_myapp_war_1.0PU" transaction-type="JTA"> 
     <jta-data-source>java:/jdbc/MyAppDS</jta-data-source> 
     <class>org.myapp.entity.Place</class> 
     <class>org.myapp.entity.User</class> 
     <class>org.myapp.entity.MyCall</class> 
     <exclude-unlisted-classes>false</exclude-unlisted-classes> 
     <properties> 
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/> 
     </properties> 
    </persistence-unit> 
</persistence>

部署应用程序之前，服务器日志显示

15:07:24,550 INFO [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-3) JBAS010400: Bound data source [java:/jdbc/MyAppDS]

而且当我调试我的应用程序时显示以下内容，下面出现一行

15:09:13,175 ERROR [org.jboss.as.controller.management-operation] (DeploymentScanner-threads - 1) JBAS014613: Operation ("deploy") failed - address: ([("deployment" => "myapp-1.0.war")]) - failure description: {"JBAS014771: Services with missing/unavailable dependencies" => ["jboss.naming.context.java.module.\"myapp-1.0\".\"myapp-1.0\".DefaultDataSource is missing [jboss.naming.context.java.jboss.datasources.ExampleDS]"]} 
15:09:13,222 INFO [org.jboss.as.server] (DeploymentScanner-threads - 1) JBAS018559: Deployed "myapp-1.0.war" (runtime-name : "myapp-1.0.war") 
15:09:13,237 INFO [org.jboss.as.controller] (DeploymentScanner-threads - 1) JBAS014774: Service status report 
JBAS014775: New missing/unsatisfied dependencies: 
     service jboss.naming.context.java.jboss.datasources.ExampleDS (missing) dependents: [service jboss.naming.context.java.module."myapp-1.0"."myapp-1.0".DefaultDataSource] 

15:09:21,177 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 2) JBAS014613: Operation ("read-attribute") failed - address: ([ 
    ("deployment" => "myapp-1.0.war"), 
    ("subsystem" => "ejb3"), 
    ("stateless-session-bean" => "MyCallFacadeREST") 
]) - failure description: "JBAS014508: EJB component for address [ 
    (\"deployment\" => \"myapp-1.0.war\"), 
    (\"subsystem\" => \"ejb3\"), 
    (\"stateless-session-bean\" => \"MyCallFacadeREST\") 
] is in 
state DOWN, must be in state UP" 
15:09:23,356 INFO [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-7) JBAS010418: Stopped Driver service with driver-name = myapp-1.0.war_com.mysql.jdbc.Driver_5_1 
15:09:23,356 INFO [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-4) JBAS010418: Stopped Driver service with driver-name = myapp-1.0.war_com.mysql.fabric.jdbc.FabricMySQLDriver_5_1 
15:09:23,356 INFO [org.jboss.as.jpa] (ServerService Thread Pool -- 60) JBAS011410: Stopping Persistence Unit (phase 2 of 2) Service 'myapp-1.0.war#myapp_myapp_war_1.0PU' 
15:09:23,356 INFO [org.jboss.weld.deployer] (MSC service thread 1-5) JBAS016009: Stopping weld service for deployment myapp-1.0.war 
15:09:23,403 INFO [org.jboss.as.jpa] (ServerService Thread Pool -- 60) JBAS011410: Stopping Persistence Unit (phase 1 of 2) Service 'myapp-1.0.war#myapp_myapp_war_1.0PU' 
15:09:23,434 INFO [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015877: Stopped deployment myapp-1.0.war (runtime-name: myapp-1.0.war) in 81ms

这是发生因为服务器没有找到我的所以它会试图指点，找到默认的数据源ExampleDS

来源

2014-12-06 Nani

时（这是我从我的standalone-full.xml删除）的数据源您删除了ExampleDS数据源，您是否也在ee子系统的默认绑定中更改了对它的引用？默认情况下，Wildfly有这个条目：

<default-bindings ... datasource="java:jboss/datasources/ExampleDS" ... />

如果你不想保持ExampleDS，你可以让你的数据源默认，或者（如果我没记错的话）的默认绑定是可选的，所以他们可以根据需要删除。

来源

2014-12-14 02:49:08 whitlaaa

在persistence.xml中使用JNDI名称引用数据源

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