我有一个奇怪的错误。我有一个基本的 Spring Boot Web 服务器在我的 intelliJIDEA IDE 中运行(在 jetty 上)。
当我运行 Maven 'package' 命令,而不是尝试从命令行运行 Web 服务器时,它给我一个 loadTimeWeaver 错误。我不明白这两个运行环境之间的区别,在我看来它确实应该有效。
在 IDEA 中,我在运行配置中指定以下内容:
主类:package.Starter
虚拟机选项:-javaagent:C:/Users/newb/EXT_LIBS/spring-instrument-4.0.3.RELEASE.jar -noverify
在命令行上我尝试执行以下操作:
java -javaagent:C:/Users/newb/EXT_LIBS/spring-instrument-4.0.3.RELEASE.jar -noverify -jar target\MySpringServer.war
但我收到以下错误:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)
at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [applicationContext.xml]: 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:1553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:973)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:750)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:120)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:648)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:909)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:898)
at au.net.iinet.operational.Starter.main(Starter.java:48)
... 6 more
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:336)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549)
... 21 more
解决 loadTimeWeaver 问题的最佳方法是什么?是否有理由它可以在我的 IDE 中工作,但不能在它之外工作?我已经陷入了尝试强制设置 loadTimeWeaver 的困境,但这并不是一件小事,而且它在我的 IDE 中工作的事实意味着我只需检查一些非常小的事情。
提前致谢。
编辑:
我找到了答案!以下问题对我非常有帮助:I use load time weaving in spring. How can i set class loader in jetty?
基本上,我还需要在命令行上指定 -Xbootclasspath/a:C:/Users/newb/EXT_LIBS/spring-instrument-4.0.3.RELEASE.jar 。现在它不会给我那些加载时间编织错误!哇!
最佳答案
这应该可以解决您的问题。
@Bean
public InstrumentationLoadTimeWeaver loadTimeWeaver() throws Throwable {
InstrumentationLoadTimeWeaver loadTimeWeaver = new InstrumentationLoadTimeWeaver();
return loadTimeWeaver;
}
同样可以在 xml 中完成配置。
发现一个新的library这只是解决动态设置 spring InstrumentationLoadTimeWeaver 以启用对方面的支持,而无需使用显式 java 代理启动 JVM
<dependency>
<groupId>de.invesdwin</groupId>
<artifactId>invesdwin-instrument</artifactId>
<version>1.0.2</version>
</dependency>
Spring启动配置
@SpringBootApplication
/**
* Make @Configurable work via @EnableLoadTimeWeaving.
* If it does not work, alternatively you can try:
* @ImportResource(locations = "classpath:/META-INF/ctx.spring.weaving.xml")
*/
@EnableLoadTimeWeaving
public class MySpringBootApplication {
public static void main(final String[] args) {
DynamicInstrumentationLoader.waitForInitialized(); //dynamically attach java agent to jvm if not already present
DynamicInstrumentationLoader.initLoadTimeWeavingContext(); //weave all classes before they are loaded as beans
SpringApplication.run(MySpringBootApplication.class, args); //start application, load some classes
}
}
关于java - 如何使用maven为Spring指定loadTimeWeaver,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25843055/