Question

我使用2个独立的数据库，所以我必须使用JTA来处理分布式事务。要么两个db都要提交，要么都回滚。我使用open JPA和JTA.Now使用junit对代码进行单元测试？当我尝试运行处理分布式transcations的代码时出现以下错误。我在此网站上发布了类似的问题，有人让我参考 http://knol.google.com/k/how-to-unit-test-enterprise-java-beans-ejb# 但我从那里了解任何事情。

<openjpa-1.2.1-SNAPSHOT-r422266:686069 fatal store error> org.apache.openjpa.persistence.RollbackException: Unable to obtain a TransactionManager using null. 
    at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:523)
    at com.XYZ.cloud.admin.loadCatalog.LoadCatalogTest.populateOffering(LoadCatalogTest.java:253)
    at com.XYZ.cloud.admin.loadCatalog.LoadCatalogTest.CatalogUploadTest(LoadCatalogTest.java:160)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:599)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:44)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
    at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: <openjpa-1.2.1-SNAPSHOT-r422266:686069 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: Unable to obtain a TransactionManager using null. 
    at org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4231)
    at org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4196)
    at org.apache.openjpa.jdbc.sql.DB2Dictionary.newStoreException(DB2Dictionary.java:503)
    at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:102)
    at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:88)
    at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:64)
    at org.apache.openjpa.jdbc.kernel.AbstractJDBCSeq.next(AbstractJDBCSeq.java:65)
    at org.apache.openjpa.util.ImplHelper.generateValue(ImplHelper.java:160)
    at org.apache.openjpa.util.ImplHelper.generateFieldValue(ImplHelper.java:144)
    at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.assignField(JDBCStoreManager.java:698)
    at org.apache.openjpa.util.ApplicationIds.assign(ApplicationIds.java:487)
    at org.apache.openjpa.util.ApplicationIds.assign(ApplicationIds.java:463)
    at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.assignObjectId(JDBCStoreManager.java:682)
    at org.apache.openjpa.kernel.DelegatingStoreManager.assignObjectId(DelegatingStoreManager.java:134)
    at org.apache.openjpa.kernel.StateManagerImpl.assignObjectId(StateManagerImpl.java:519)
    at org.apache.openjpa.kernel.StateManagerImpl.preFlush(StateManagerImpl.java:2823)
    at org.apache.openjpa.kernel.PNewState.beforeFlush(PNewState.java:39)
    at org.apache.openjpa.kernel.StateManagerImpl.beforeFlush(StateManagerImpl.java:959)
    at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:1948)
    at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:1908)
    at org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1826)
    at org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:81)
    at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1350)
    at org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:877)
    at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:512)
    ... 26 more
Caused by: java.sql.SQLException: Unable to obtain a TransactionManager using null. 
    at org.apache.openjpa.jdbc.kernel.TableJDBCSeq.allocateSequence(TableJDBCSeq.java:419)
    at org.apache.openjpa.jdbc.kernel.TableJDBCSeq.nextInternal(TableJDBCSeq.java:290)
    at org.apache.openjpa.jdbc.kernel.AbstractJDBCSeq.next(AbstractJDBCSeq.java:60)
    ... 44 more
Caused by: javax.transaction.NotSupportedException: Unable to obtain a TransactionManager using null. 
    at org.apache.openjpa.ee.AutomaticManagedRuntime.doNonTransactionalWork(AutomaticManagedRuntime.java:306)
    at org.apache.openjpa.jdbc.kernel.TableJDBCSeq.allocateSequence(TableJDBCSeq.java:415)
    ... 46 more
Caused by: <openjpa-1.2.1-SNAPSHOT-r422266:686069 fatal user error> org.apache.openjpa.util.InvalidStateException: Could not perform automatic lookup of EJB container's javax.transaction.TransactionManager implementation. Please ensure that you are running the application from within an EJB 1.1 compliant EJB container, and then set the org.apache.openjpa.ManagedRuntime property to  
    at org.apache.openjpa.ee.AutomaticManagedRuntime.getTransactionManager(AutomaticManagedRuntime.java:250)
    at org.apache.openjpa.ee.AutomaticManagedRuntime.doNonTransactionalWork(AutomaticManagedRuntime.java:304)
    ... 47 more
Caused by: javax.naming.ConfigurationException: Name space accessor for the java: name space has not been set. Possible cause is that the user is specifying a java: URL name in a JNDI Context method call but is not running in a J2EE client or server environment.
    at com.XYZ.ws.naming.java.javaURLContextFactory.isNameSpaceAccessable(javaURLContextFactory.java:93)
    at com.XYZ.ws.naming.urlbase.UrlContextFactory.getObjectInstance(UrlContextFactory.java:82)
    at javax.naming.spi.NamingManager.getURLContext(NamingManager.java:655)
    at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:434)
    at javax.naming.InitialContext.lookup(InitialContext.java:450)
    at org.apache.openjpa.ee.RegistryManagedRuntime.getTransactionManager(RegistryManagedRuntime.java:61)
    at org.apache.openjpa.ee.AutomaticManagedRuntime.getTransactionManager(AutomaticManagedRuntime.java:154)
    ... 48 more

Answer 1

我使用2个独立的数据库，因此我必须使用JTA来处理分布式事务。因此要么两个db都必须提交，要么两者都回滚。我使用open JPA和JTA.Now使用junit对代码进行单元测试？

如果要在容器外部运行集成测试并使用JTA，则必须

设置一个独立的JTA事务管理器，如Atomikos，Bitronix等（我会选择Atomikos作为其文档）
设置支持JTA的数据源
把整个东西包在一起。

我热烈建议使用Spring并查看Spring, JPA, and JTA with Hibernate and JOTM（但要使用它来使用Atomikos，Bitronix）。

资源

Atomikos TransactionsEssentials

相关问题

Answer 2

另一个选择是使用OpenEjb进行单元测试。

Answer 3

我有一个带有EJB 3的Wicket应用程序。生产适用于Glassfish 2（Toplink - JPA 1）。单元测试适用于OpenEJB 3.我需要在单元测试中使用OpenEJB才能使用真棒Wicket集成测试。

我假设你有一个Maven项目。如果没有，请手动获取依赖项。

的pom.xml：

<dependency>
    <!-- It's provided by Glassfish but while testing OpenEJB needs it explicitly -->
    <groupId>toplink.essentials</groupId>
    <artifactId>toplink-essentials</artifactId>
    <version>2.0-58g</version>
</dependency>

<dependency>
    <!-- not sure about this one but probably it's needed -->
    <groupId>org.glassfish</groupId>
    <artifactId>javax.servlet</artifactId>
    <version>3.0</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.apache.openejb</groupId>
    <artifactId>openejb-core</artifactId>
    <version>3.0.2</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.13</version>
    <scope>test</scope>
</dependency>

请务必将其放在<dependencies>之后。

AbstactOpenEjbTest类：

public abstract class AbstractOpenEjbTest {

    private static final String JTA_DATA_SOURCE = "jdbc/SeobserwatorDS";

    protected static InitialContext context;

    @BeforeClass
    public static void createInitialContext() throws Exception {
        setSystemProperties();

        final Properties properties = new Properties();

        properties.setProperty(JTA_DATA_SOURCE, "new://Resource?type=DataSource");
        properties.setProperty(JTA_DATA_SOURCE + ".JdbcDriver", "com.mysql.jdbc.Driver");
        properties.setProperty(JTA_DATA_SOURCE + ".JdbcUrl", "jdbc:mysql://localhost:3306/inne_test");
        properties.setProperty(JTA_DATA_SOURCE + ".UserName", "xxx");
        properties.setProperty(JTA_DATA_SOURCE + ".Password", "yyy");

        context = new InitialContext(properties);
    }

    @BeforeClass
    public static void setSystemProperties() {
        System.setProperty("java.naming.factory.initial", "org.apache.openejb.client.LocalInitialContextFactory");
        System.setProperty("toplink.target-server", "net.nowaker.nhr.seobserwator.web.OpenEjbTransactionController");
        System.setProperty("toplink.ddl-generation", "drop-and-create-tables");
        System.setProperty("toplink.logging.level", "WARNING");
        System.setProperty("toplink.ddl-generation.output-mode", "both");
    }

    @SuppressWarnings("unchecked")
    public AbstractOpenEjbTest() {
        // Execute manually all ServletContextListeners as we are outside the container
    }

    @AfterClass
    public static void removeTables() throws Exception {
        // some clean-up, e.g. delete all data
    }
}

有些奇怪的课我不记得是什么，但需要：

import javax.transaction.TransactionManager;
import oracle.toplink.essentials.transaction.JTATransactionController;

/**
 * Transaction controller for OpenEJB standalone/embedded and Toplink
 *
 * @see http://qbeukes.blogspot.com/2008/08/toplink-as-your-openejb-persistence.html
 */
public class OpenEjbTransactionController extends JTATransactionController {

    public static final String JNDI_TRANSACTION_MANAGER_NAME = "java:comp/TransactionManager";

    public OpenEjbTransactionController() {
        super();
    }

    @Override
    protected TransactionManager acquireTransactionManager() throws Exception {
        return (TransactionManager) jndiLookup(JNDI_TRANSACTION_MANAGER_NAME);
    }
}

示例测试：

public class OpenEjbTest extends AbstractOpenEjbTest {

    @Test
    public void shouldAddUserWithStatelessBean() throws Exception {
        // when
        final AuthServiceLocal authService = EjbUtils.lookupBean(AuthServiceLocal.class);
        final CrudServiceLocal crudService = EjbUtils.lookupBean(CrudServiceLocal.class);

        // then
        assertFalse(authService.userExists("nonExistent"));
        final User unmanagedUser = new User(null, "a", "b", "c", "d", 12345678, new Date());
        final User managedUser = crudService.update(unmanagedUser);
        assertNotNull(managedUser.getId());
        assertNotNull(crudService.find(User.class, managedUser.getId()));
    }
}

让我知道它是否适合你。

单元测试代码，使用JPA＆amp; JTA

3 个答案:

资源

相关问题