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我在使用tomcat部署接縫時遇到問題。我得到這個錯誤：與tomcat的接縫「entityManager爲空」
Caused by: java.lang.IllegalStateException: entityManager is null
at org.jboss.seam.framework.EntityQuery.validate(EntityQuery.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
.......................................
這是我的細節。我遵循了JBoss Seam的JPA例如所有的細節：
的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_1_0.xsd"
version="1.0">
<persistence-unit name="bookingDatabase">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<non-jta-data-source>java:comp/env/jdbc/TestDB</non-jta-data-source>
<properties>
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/>
</properties>
</persistence-unit>
</persistence>
這是我的component.xml文件。我認爲它沒有問題。
的components.xml
<?xml version="1.0" encoding="UTF-8"?>
<components xmlns="http://jboss.com/products/seam/components"
xmlns:core="http://jboss.com/products/seam/core"
xmlns:persistence="http://jboss.com/products/seam/persistence"
xmlns:drools="http://jboss.com/products/seam/drools"
xmlns:bpm="http://jboss.com/products/seam/bpm"
xmlns:security="http://jboss.com/products/seam/security"
xmlns:mail="http://jboss.com/products/seam/mail"
xmlns:web="http://jboss.com/products/seam/web"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:cache="http://jboss.com/products/seam/cache"
xmlns:async="http://jboss.com/products/seam/async"
xmlns:transaction="http://jboss.com/products/seam/transaction"
xsi:schemaLocation=
"http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.2.xsd
http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.2.xsd
http://jboss.com/products/seam/drools http://jboss.com/products/seam/drools-2.2.xsd
http://jboss.com/products/seam/bpm http://jboss.com/products/seam/bpm-2.2.xsd
http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.2.xsd
http://jboss.com/products/seam/mail http://jboss.com/products/seam/mail-2.2.xsd
http://jboss.com/products/seam/web http://jboss.com/products/seam/web-2.2.xsd
http://jboss.com/products/seam/cache http://jboss.com/products/seam/cache-2.2.xsd
http://jboss.com/products/seam/transaction http://jboss.com/products/seam/transaction-2.2.xsd
http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.2.xsd
http://jboss.com/products/seam/async http://jboss.com/products/seam/async-2.0.xsd ">
<core:manager concurrent-request-timeout="500"
conversation-timeout="120000"
conversation-id-parameter="cid"
parent-conversation-id-parameter="pid"/>
<transaction:entity-transaction entity-manager="#{em}"/>
<persistence:entity-manager-factory name="bookingDatabase"/>
<persistence:managed-persistence-context name="em"
auto-create="true"
entity-manager-factory="#{bookingDatabase}"/>
<security:identity authenticate-method="#{authenticator.authenticate}"/>
<async:quartz-dispatcher/>
<cache:eh-cache-provider name="cacheProvider" auto-create="true"/>
<!-- Make sure this URL pattern is the same as that used by the Faces Servlet -->
<web:hot-deploy-filter url-pattern="*.seam"/>
<drools:rule-base name="securityRules">
<drools:rule-files>
<value>/security.drl</value>
</drools:rule-files>
</drools:rule-base>
<security:rule-based-permission-resolver security-rules="#{securityRules}"/>
<security:jpa-identity-store
user-class="org.domain.simpopanpa.entity.UserAccount"
role-class="org.domain.simpopanpa.entity.UserRole"/>
<security:jpa-permission-store
user-permission-class="org.domain.simpopanpa.entity.UserPermission"/>
<event type="org.jboss.seam.security.notLoggedIn">
<action execute="#{redirect.captureCurrentView}"/>
</event>
<event type="org.jboss.seam.security.loginSuccessful">
<action execute="#{redirect.returnToCapturedView}"/>
</event>
<mail:mail-session host="localhost" port="25"/>
</components>
在一些論壇上描述我已經加入context.xml文件。 的context.xml
<Context path="/someName" docBase="someName"
debug="5" reloadable="true" crossContext="true">
<Resource auth="Container"
name="jdbc/TestDB"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@127.0.0.1:1521:db11g"
username="user"
password="pass"
maxActive="100"
maxIdle="30"
maxWait="10000"/>
</Context>
我使用Tomcat 7和JBoss Seam的2.2.1
如果任何人都可以給我一個提示。
Thx。