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抛java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory错误_sofa-middleware-log slf4j error : build iloggerfac
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根据java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory错误信息可以轻松的知道，错误的原因是因为缺少slf4j日志组件jar包造成的，slf4j是一个开源的日志组件，和log4j类似，都是用来记录日志的开源组件。
错误信息：
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:946)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:890)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:479)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
at org.activiti.engine.impl.cfg.BeansConfigurationHelper.parseProcessEngineConfiguration(BeansConfigurationHelper.java:36)
at org.activiti.engine.impl.cfg.BeansConfigurationHelper.parseProcessEngineConfigurationFromResource(BeansConfigurationHelper.java:48)
at org.activiti.engine.ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(ProcessEngineConfiguration.java:185)
at org.activiti.engine.ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault(ProcessEngineConfiguration.java:177)
at com.bug315.ActivitiTest01.main(ActivitiTest01.java:10)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
解决办法：
将slf4j-api-1.5.8.jar、slf4j-log4j12-1.5.8.jar两个jar包导入到当前项目的classpath下面即可解决
