我正在尝试使用maven实现Eclipselink + Spring + JPA的静态编织。我已经使用Java Configuration配置了我的spring项目，没有context.xml。我试过以下事情：
添加了以下编织规范。
<property name="eclipselink.weaving" value="static" />
如下：
@Bean()
public DataSource getDataSource() {
BoneCPDataSource ds = new BoneCPDataSource();
log.debug("Driver Name : " + driverClassName);
try {
Class.forName(driverClassName);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
log.debug("DB Url : " + url);
ds.setDriverClass(driverClassName);
ds.setJdbcUrl(url);
ds.setUsername(username);
ds.setPassword(password);
ds.setMaxConnectionsPerPartition(5);
ds.setMinConnectionsPerPartition(2);
ds.setAcquireIncrement(2);
ds.setDefaultAutoCommit(false);
Properties props = new Properties();
props.put("eclipselink.weaving", "static");
try {
ds.setProperties(props);
} catch (Exception e) {
e.printStackTrace();
}
return ds;
}
@Bean(name = "em")
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(getDataSource());
em.setJpaDialect(jpaDialect());
em.setPackagesToScan("com.cdl.hp50.model", "com.cdl.hp50.model.person");
em.setPersistenceUnitName(persistenceUnitName);
DatabasePlatform dp = new MySQLPlatform();
em.setJpaVendorAdapter(getEclipseLinkJpaVendorAdapter());
return em;
}
如下：
<plugin>
<groupId>de.empulse.eclipselink</groupId>
<artifactId>staticweave-maven-plugin</artifactId>
<version>1.0.0</version>
<executions>
<execution>
<phase>process-classes</phase>
<goals>
<goal>weave</goal>
</goals>
<configuration>
<persistenceXMLLocation>META-INF/persistence.xml</persistenceXMLLocation>
<logLevel>FINE</logLevel>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa</artifactId>
<version>${eclipselink.version}</version>
</dependency>
</dependencies>
</plugin>
我明确指出要使用静态（构建时间）编织。当我使用maven install创建war时，persistence.xml中列出的实体已成功编织。但是当我将war部署到tomcat时，它会给出以下异常：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'em' defined in class com.cdl.hp50.config.DBConfig: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Cannot apply class transformer without LoadTimeWeaver specified
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4992)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5492)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1245)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1895)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Cannot apply class transformer without LoadTimeWeaver specified
at org.springframework.orm.jpa.persistenceunit.SpringPersistenceUnitInfo.addTransformer(SpringPersistenceUnitInfo.java:80)
at org.eclipse.persistence.jpa.PersistenceProvider.createContainerEntityManagerFactory(PersistenceProvider.java:348)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:341)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564)
... 25 more
我尝试将eclipselink.weaving设为false。但它仍然给出同样的错误。我不知道为什么要找LoadTimeWeaver。请告诉我在这里我缺少的东西。
更新
我上传的初学者项目包括eclipselink，spring mvc，spring data jpa，sitemesh on github
答案 0 :(得分：2)
编辑：我认为我发现了您的问题
props.put("eclipselink.weaving", "static");
try {
ds.setProperties(props);
您是否尝试将eclipselink属性应用于数据源？如果您检查我的示例context.xml（从下面的应用程序形式），则需要将jpaPropertyMap应用于LocalContainerEntityManagerFactoryBean。
因此，您应该将代码更改为
em.setjpaPropertyMap(props)
旧回答：
首先，对于这样的问题，一个示例项目将非常好。好吧，我为你做了，可以在https://github.com/baumgartner/eclipselink-static-weaving
找到它坏消息：我无法重现你的问题，我的应用程序在tomcat 7上工作正常。
如果你的.class文件被static-weaving-plugin扩展了吗？被编码的文件是否在tomcat文件夹中？ tomcat wtpwebapps-folder中的文件是否正确？ （有时同步失败） 您是否使用JAD（java反编译器）来反编译您的类并检查它们是否得到了增强？增强的实体看起来像这样：
public class asdf.User implements java.lang.Cloneable, org.eclipse.persistence.internal.weaving.PersistenceWeaved, org.eclipse.persistence.internal.descriptors.PersistenceEntity, org.eclipse.persistence.internal.descriptors.PersistenceObject, org.eclipse.persistence.queries.FetchGroupTracker, org.eclipse.persistence.internal.weaving.PersistenceWeavedFetchGroups, org.eclipse.persistence.descriptors.changetracking.ChangeTracker, org.eclipse.persistence.internal.weaving.PersistenceWeavedChangeTracking, org.eclipse.persistence.internal.weaving.PersistenceWeavedRest {
如果部署战争，您的应用是否有效？如果您从IDE运行您的应用程序是否有效？
答案 1 :(得分：1)
我正在尝试使用maven实现Eclipselink + Spring + JPA的静态编织。一切都很好，除了获取类型永远不会工作懒惰。最后，我发现这个article的解决方案对我来说非常合适 解决方案是在我的maven pom.xml中添加一个插件。
<plugin>
<artifactId>eclipselink-staticweave-maven-plugin</artifactId>
<groupId>au.com.alderaan</groupId>
<version>1.0.4</version>
<executions>
<execution>
<goals>
<goal>weave</goal>
</goals>
<phase>process-classes</phase>
<configuration>
<logLevel>ALL</logLevel>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>${eclipselink.version}</version>
</dependency>
</dependencies>
</plugin>
EclipseLink also建议 我对静态编织的唯一问题是，即使你愿意，也无法获得渴望。因此，我没有使用编织而是batch or join fetch