我创建了一个数据库并从中生成了一些实体。现在我想用Spring框架插件。问题是，当我部署到Wildfly时，它会尝试在我的数据库中创建表，并因为表存在而失败。
我的context.xml文件如下
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">
<context:annotation-config />
<!--
DATABASE SETUP
-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="username" value="****" />
<property name="password" value="****" />
<property name="driverClassName" value="oracle.jdbc.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@1.1.1.1:1521:XE" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="persistenceUnitName" value="examplePU" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.Oracle10gDialect" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="userDao" class="com.foobar.dao.user.JpaUserDao">
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<!--
INIT REST COMPONENTS
-->
<context:component-scan base-package="com.foobar.rest.resources" />
<bean id="objectMapper" class="org.codehaus.jackson.map.ObjectMapper" />
<!--
SPRING SECURITY SETUP
-->
<bean id="passwordEncoder" class="com.foobar.security.SaltedSHA256PasswordEncoder">
<constructor-arg value="secret" />
</bean>
<security:authentication-manager id="authenticationManager">
<security:authentication-provider user-service-ref="userDao">
<security:password-encoder ref="passwordEncoder"></security:password-encoder>
</security:authentication-provider>
</security:authentication-manager>
<security:http
realm="Protected API"
use-expressions="true"
auto-config="false"
create-session="stateless"
entry-point-ref="unauthorizedEntryPoint"
authentication-manager-ref="authenticationManager">
<security:custom-filter ref="authenticationTokenProcessingFilter" position="FORM_LOGIN_FILTER" />
<security:intercept-url pattern="/rest/user/authenticate" access="permitAll" />
<security:intercept-url method="GET" pattern="/rest/news/**" access="hasRole('user')" />
<security:intercept-url method="PUT" pattern="/rest/news/**" access="hasRole('admin')" />
<security:intercept-url method="POST" pattern="/rest/news/**" access="hasRole('admin')" />
<security:intercept-url method="DELETE" pattern="/rest/news/**" access="hasRole('admin')" />
</security:http>
<bean id="unauthorizedEntryPoint" class="com.foobar.rest.UnauthorizedEntryPoint" />
<bean class="com.foobar.rest.AuthenticationTokenProcessingFilter" id="authenticationTokenProcessingFilter">
<constructor-arg ref="userDao" />
</bean>
</beans>
这是来自wildfly的日志
2014-04-02 22:31:54,170 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 41) JBAS014613: Operation ("deploy") failed - address: ([("deployment" => "portal-web-1.0-SNAPSHOT.war")]) - failure description: {"JBAS014671: Failed services" => {"jboss.persistenceunit.\"portal-web-1.0-SNAPSHOT.war#OneW2\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"portal-web-1.0-SNAPSHOT.war#OneW2\": javax.persistence.PersistenceException: Unable to execute JPA schema generation create command [***]
Caused by: javax.persistence.PersistenceException: Unable to execute JPA schema generation create command [***]
Caused by: org.h2.jdbc.JdbcSQLException: Table \"XXX\" already exists; SQL statement:
*** [42101-173]"}}
2014-04-02 22:31:54,172 ERROR [org.jboss.as.server] (management-handler-thread - 41) JBAS015870: Deploy of deployment "portal-web-1.0-SNAPSHOT.war" was rolled back with the following failure message:
{"JBAS014671: Failed services" => {"jboss.persistenceunit.\"portal-web-1.0-SNAPSHOT.war#OneW2\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"portal-web-1.0-SNAPSHOT.war#OneW2\": javax.persistence.PersistenceException: Unable to execute JPA schema generation create command [***]
Caused by: javax.persistence.PersistenceException: Unable to execute JPA schema generation create command [***]
Caused by: org.h2.jdbc.JdbcSQLException: Table \"XXX\" already exists; SQL statement:
*** [42101-173]"}}
2014-04-02 22:31:54,174 INFO [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-4) JBAS010418: Stopped Driver service with driver-name = portal-web-1.0-SNAPSHOT.war_org.hsqldb.jdbc.JDBCDriver_2_2
2014-04-02 22:31:54,173 INFO [org.jboss.as.jpa] (ServerService Thread Pool -- 77) JBAS011410: Stopping Persistence Unit (phase 2 of 2) Service 'portal-web-1.0-SNAPSHOT.war#examplePU'
2014-04-02 22:31:54,177 INFO [org.jboss.as.jpa] (ServerService Thread Pool -- 76) JBAS011410: Stopping Persistence Unit (phase 1 of 2) Service 'portal-web-1.0-SNAPSHOT.war#examplePU'
2014-04-02 22:31:54,177 INFO [org.jboss.as.jpa] (ServerService Thread Pool -- 77) JBAS011410: Stopping Persistence Unit (phase 1 of 2) Service 'portal-web-1.0-SNAPSHOT.war#OneW2'
2014-04-02 22:31:54,336 INFO [org.jboss.as.server.deployment] (MSC service thread 1-5) JBAS015877: Stopped deployment portal-web-1.0-SNAPSHOT.war (runtime-name: portal-web-1.0-SNAPSHOT.war) in 163ms
2014-04-02 22:31:54,337 INFO [org.jboss.as.controller] (management-handler-thread - 41) JBAS014774: Service status report
JBAS014775: New missing/unsatisfied dependencies:
service jboss.deployment.unit."portal-web-1.0-SNAPSHOT.war".component."com.sun.jersey.spi.spring.container.servlet.SpringServlet".CREATE (missing) dependents: [service jboss.deployment.unit."portal-web-1.0-SNAPSHOT.war".component."com.sun.jersey.spi.spring.container.servlet.SpringServlet".START]
service jboss.deployment.unit."portal-web-1.0-SNAPSHOT.war".component."org.springframework.web.context.ContextLoaderListener".CREATE (missing) dependents: [service jboss.deployment.unit."portal-web-1.0-SNAPSHOT.war".component."org.springframework.web.context.ContextLoaderListener".START]
service jboss.deployment.unit."portal-web-1.0-SNAPSHOT.war".ee.ComponentRegistry (missing) dependents: [service jboss.undertow.deployment.default-server.default-host."/portal-web-1.0-SNAPSHOT".UndertowDeploymentInfoService]
JBAS014777: Services which failed to start: service jboss.persistenceunit."portal-web-1.0-SNAPSHOT.war#OneW2"
如何禁用表重新创建？
答案 0 :(得分：4)
问题可能是在你的hibernate配置文件中。
Please look into a property hibernate.hbm2ddl.auto
它们可以是其中一个值，也可以解释每个值。
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema at the end of the session.
因此，根据您的需要，在文件中设置属性
答案 1 :(得分：2)
尝试将以下行放在jpaProperties属性
中<prop key="hibernate.hbm2ddl.auto">validate</prop>
它应该有用。
答案 2 :(得分：1)
我假设你使用Hibernate的hbm2ddl功能。
然后你应该使用验证值：
<property name="hibernate.hbm2ddl.auto" value="validate">
有关此功能，请参阅Hibernate documentation。
答案 3 :(得分：1)
在JPA属性中添加以下内容
<prop key="hibernate.hbm2ddl.auto">update</prop>
如果表格结构发生变化，这将改变表格， 将创建新表以防万一表不存在， 如果表存在，将插入表中。