私のapplication-datasource.xmlsが私の問題以下ですこの コンテキストファイルにユーザ名とパスワードを入力したくないとき実行時にユーザ名とパスワードを取得したいときユーザーはログインしますが、私はどのようにこれを行うには がわかりません。オンザフライでentitymanagerファクトリを更新する
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schem...-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schem...ng-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<tx:annotation-driven />
<!-- DataSource has been Lazily initialized, set lazy-init to false in production -->
<bean id="datasource"
class="com.mchange.v2.c3p0.ComboPooledDataSource" lazy-init="true" destroy-method="close">
<!-- Tracker created for connection problem: https://sourceforge.net/tracker/?func=detail&aid=3176467&group_id=25357&atid=38369 0-->
<property name="driverClass" value="com.ibm.as400.access.AS400JDBCDriver" />
<property name="jdbcUrl" value="${url}" />
<!--<property name="user" value="${username}" />
<property name="password" value="${password}" />-->
<!-- Pool Size Properties follow -->
<property name="minPoolSize" value="0"/> <!-- Minimum no. of pooled connections -->
<property name="initialPoolSize" value="1" /> <!-- Initial no. of pooled connections (>minimum)[optional] -->
<property name="maxPoolSize" value="2"/> <!-- Maximum no. of pooled connections (>minimum) -->
<property name="acquireIncrement" value="1"/> <!-- Connections to be added every time the need arises -->
<!-- Connection Establishment Strategy follows -->
<property name="acquireRetryAttempts" value="5" /> <!-- Retry Attempts on Database connection failure -->
<property name="acquireRetryDelay" value="1000"/> <!-- Milliseconds between re-tries -->
<property name="breakAfterAcquireFailure" value="true" /> <!-- Aggressively break DataSource on connection failure -->
<!-- Prepared Statement pooling -->
<property name="maxStatements" value="300"/> <!-- Value ~= maxPoolSize * no. of (frequently used)stored procedures -->
<property name= "maxStatementsPerConnection" value="15" /> <!-- Statement caching per connection for improved performance -->
<!-- Connection Age related settings -->
<property name="maxIdleTime" value="300" /> <!-- Seconds for a connection to remain idle before being closed -->
<property name="unreturnedConnectionTimeout" value="300" /> <!-- Wait for number of seconds for application to release a connection -->
<property name="idleConnectionTestPeriod" value="30000"/> <!-- Test for idle connections(In milliseconds) -->
<property name= "autoCommitOnClose" value="true" /> <!-- For ensuring all transactions to commit/rollback on close -->
<property name="debugUnreturnedConnectionStackTraces" value ="true" />
<!-- Ignored overrides -->
<!-- Used for connection testing during startup -->
<!--property name="testConnectionOnCheckin" value="true" /--> <!-- Test for connection validity asynchronously -->
<!--property name="initialPoolSize" value="1" /--> <!-- Initial no. of pooled connections (>minimum)[optional] -->
<!--property name="idleConnectionTestPeriod" value="30000" /> In milliseconds(Overridden) -->
<!--property name="maxConnectionAge" value="1800" /--> <!-- Life in seconds for any connection(busy/idle) before being deleted -->
<!--property name="numHelperThreads" value="3" /--> <!-- Perform JDBC operations asynchronously -->
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerE ntityManagerFactoryBean">
<property name="persistenceUnitName" value="persistence" />
<property name="persistenceXmlLocation" value="classpathersistence.xml" />
<property name="dataSource" ref="datasource" />
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading .InstrumentationLoadTimeWeaver" />
</property>
<property name="jpaVendorAdapter" ref="vendorAdapter" />
</bean>
<bean id="vendorAdapter"
class="org.springframework.orm.jpa.vendor.Hibernat eJpaVendorAdapter">
<property name="databasePlatform" value="${dialect}" />
<property name="showSql" value="${show_sql}" />
<property name="generateDdl" value="false" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionM anager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean class="org.springframework.orm.jpa.support.Persist enceAnnotationBeanPostProcessor" />
<bean class="org.springframework.dao.annotation.Persiste nceExceptionTranslationPostProcessor"/>
</beans>
いくつかのサイトで、私はそれはそれはフェッチ中にエラーが接続を開くことができません与え、私の現在のシナリオでは、新しい接続を使用してエンティティオブジェクトを作ることができますのでてEntityManagerFactoryをリフレッシュしたいUserCredintialDataSourceを使用することを示唆しているが、それは実際に動作しませデータ。 ありがとう
エンティティマネージャファクトリの詳細については、http://stackoverflow.com/a/4544053/366964を参照してください。 –