[英]How do I configure dynamic weaving using EclipseLink & Spring?
How do I configure dynamic weaving using EclipseLink & Spring? 如何使用EclipseLink和Spring配置动态编织? Right now I'm trying to get this working with a Junit test, but I'll later have to have it work with Tomcat (my department has been standardized on it for something like 10 years).
现在,我正在尝试使它与Junit测试一起使用,但是稍后我将不得不使其与Tomcat一起使用(我的部门已经对其进行了10年的标准化)。
I'm running into two main problems: 我遇到两个主要问题:
1. Spring wants a load time weaver: 1. Spring需要一个加载时间编织器:
Exception: 例外:
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:181)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
<snip>
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.weaving.AspectJWeavingEnabler#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loadTimeWeaver': Initialization of bean failed; nested exception is java.lang.IllegalStateException: ClassLoader [sun.misc.Launcher$AppClassLoader] does NOT provide an 'addTransformer(ClassFileTransformer)' method. Specify a custom LoadTimeWeaver or start your Java virtual machine with Spring's agent: -javaagent:org.springframework.instrument.jar
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
<snip>
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loadTimeWeaver': Initialization of bean failed; nested exception is java.lang.IllegalStateException: ClassLoader [sun.misc.Launcher$AppClassLoader] does NOT provide an 'addTransformer(ClassFileTransformer)' method. Specify a custom LoadTimeWeaver or start your Java virtual machine with Spring's agent: -javaagent:org.springframework.instrument.jar
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
<snip>
Caused by: java.lang.IllegalStateException: ClassLoader [sun.misc.Launcher$AppClassLoader] does NOT provide an 'addTransformer(ClassFileTransformer)' method. Specify a custom LoadTimeWeaver or start your Java virtual machine with Spring's agent: -javaagent:org.springframework.instrument.jar
at org.springframework.context.weaving.DefaultContextLoadTimeWeaver.setBeanClassLoader(DefaultContextLoadTimeWeaver.java:91)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1437)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1408)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
... 44 more
I can fix this by configuring the Spring Instrumentation: 我可以通过配置Spring Instrumentation来解决此问题:
JVM parameter:
-javaagent:/path/to/org.springframework.instrument-3.1.0.M2.jar
2. Eclipselink is not satisfied with the Spring Instrumentation: 2. Eclipselink对Spring Instrumentation不满意:
Error: 错误:
(similar error messages repeated many times)
[EL Severe]: 2011-06-20 16:12:57.951--ServerSession(979781372)--Local Exception Stack:
Exception [EclipseLink-0] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions:
---------------------------------------------------------
Exception [EclipseLink-60] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The method [_persistence_set_shellType_vh] or [_persistence_get_shellType_vh] is not defined in the object [ps.entity.JudicialArtifactFamily].
Internal Exception: java.lang.NoSuchMethodException: ps.entity.JudicialArtifactFamily._persistence_get_shellType_vh()
Mapping: org.eclipse.persistence.mappings.ManyToOneMapping[shellType]
Descriptor: RelationalDescriptor(ps.entity.JudicialArtifactFamily --> [DatabaseTable(JUDICIAL_ARTIFACT_FAMILY)])
Exception [EclipseLink-218] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_shellType_vh]. The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
I tried to fix this by using the EclipseLink weaver: 我试图通过使用EclipseLink weaver来解决此问题:
-javaagent:/dev/tools/javaagents/eclipselink.jar
But then I get the same exception from problem #1. 但是然后我从问题1中得到了相同的例外。
Library versions 库版本
I am using: 我在用:
Configuration files 配置文件
Here is my persistence.xml: 这是我的persistence.xml:
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.0"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="eclipseLinkHashPU" transaction-type="RESOURCE_LOCAL">
<class>ps.entity.Artifact</class>
<class>ps.entity.JudicialArtifactFamily</class>
<class>ps.entity.ShellType</class>
<class>ps.entity.SourceArtifact</class>
<class>ps.entity.Health</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
<property name="eclipselink.ddl-generation.output-mode" value="database"/>
</properties>
</persistence-unit>
</persistence>
Here is my application.xml: 这是我的application.xml:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jaxrs="http://cxf.apache.org/schema/jaxrs" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://cxf.apache.org/schema/jaxrs
http://cxf.apache.org/schema/jaxrs.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd">
<context:component-scan base-package="ps">
</context:component-scan>
<context:load-time-weaver/>
<alias alias="entityManagerFactory" name="eclipseLinkEntityManagerFactory"/>
<bean id="eclipseLinkEntityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceXmlLocation" value="classpath:eclipselink-persistence.xml" />
<property name="persistenceUnitName" value="eclipseLinkHashPU" />
<property name="jpaPropertyMap">
<map>
<entry key="eclipselink.logging.level" value="Severe"/>
<entry key="eclipselink.target-database" value="org.eclipse.persistence.platform.database.oracle.OraclePlatform"/>
<entry key="javax.persistence.nonJtaDataSource" value-ref="hash1DataSource"/>
<!-- it's not good that I'm turning weaving off -->
<!-- <entry key="eclipselink.weaving" value="false"/> -->
</map>
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="databasePlatform" value="oracle" />
<property name="database" value="ORACLE" />
<property name="generateDdl" value="true" />
<property name="showSql" value="true" />
</bean>
</property>
</bean>
<!-- datasources, etc -->
</beans>
For weaving with Spring I believe you need something like, 我相信要使用Spring进行编织,您需要
<bean id="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="defaultDataSource" ref="dataSource" />
<property name="dataSources">
<map>
<entry>
<key>
<value>jdbc/__default</value>
</key>
<ref bean="dataSource" />
</entry>
<entry>
<key>
<value>jdbc/jta</value>
</key>
<ref bean="dataSource" />
</entry>
</map>
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
</bean>
There is some information here, 这里有一些信息,
http://wiki.eclipse.org/EclipseLink/Examples/JPA/JPASpring http://wiki.eclipse.org/EclipseLink/Examples/JPA/JPASpring
Ensure you are not accessing your classes before accessing the Spring context. 确保在访问Spring上下文之前没有访问您的类。
Another solution is to use static weaving. 另一种解决方案是使用静态编织。
Now, I am also using EclipseLink 2.2
and Spring 3.1
as below. 现在,我还使用
EclipseLink 2.2
和Spring 3.1
,如下所示。 My configuration is a little different with yours. 我的配置与您的配置有些不同。 There is no
loadTimeWeaver
configuration in your eclipseLinkEntityManagerFactory
. 没有
loadTimeWeaver
在配置eclipseLinkEntityManagerFactory
。 I think, it will be ok if you use as below. 我认为,按以下方式使用可以。
Please, try as below with your Oracle DB
information.. 请按照以下说明尝试使用您的
Oracle DB
信息。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:faces="http://www.springframework.org/schema/faces"
xmlns:int-security="http://www.springframework.org/schema/integration/security"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:sec="http://www.springframework.org/schema/security"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/integration/security http://www.springframework.org/schema/integration/security/spring-integration-security-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd
http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/faces http://www.springframework.org/schema/faces/spring-faces-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd">
<context:annotation-config/>
<context:component-scan base-package="your-package"/>
<tx:annotation-driven transaction-manager="transactionManager" />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="your-driver"/>
<property name="url" value="your-database-url"/>
<property name="username" value="your-username"/>
<property name="password" value="your-passowrd"/>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<!-- <property name="dataSource" ref="dataSource"/>-->
<property name="persistenceUnitName" value="your-persistence-unit-name"/>
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect"/>
</property>
<property name="jpaPropertyMap">
<props>
<prop key="eclipselink.weaving">false</prop>
</props>
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver">
</bean>
</property>
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="databasePlatform" value="org.eclipse.persistence.platform.database.OraclePlatform" />
<property name="generateDdl" value="false"/>
<property name="showSql" value="true"/>
</bean>
</beans>
将org.springframework.instrument-3.1.0.M2.jar
复制到tomcat/lib
目录中,然后重试。
Considering the instrumentation for unit tests, one can add it as VM argument to the maven-surefire-plugin 考虑到单元测试的工具,可以将其作为VM参数添加到maven-surefire-plugin
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>-javaagent:lib/test/spring-instrument-4.0.2.RELEASE.jar</argLine>
</configuration>
</plugin>
assuming spring-instrument jar was placed at corresponding location. 假设将弹簧仪器罐放在相应的位置。
(For that, the following dependency could be added temporarily to the project pom.xml (为此,可以将以下依赖项临时添加到项目pom.xml中。
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument</artifactId>
<scope>test</scope>
</dependency>
and then after the build, the corresponding artifact copied from local .m2 directory to project's lib/test directory.) 然后在构建之后,将相应的工件从本地.m2目录复制到项目的lib / test目录。)
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