wildfly服务器系列－－widlfly启动Operation ("add") failed失败以及org.dom4j.DocumentFactory cannot be cast to org.d

一、问题描述

　　启动wildfly服务器报错，报错信息：
　　

17:14:50,733 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("deployment" => "YZYWeiXin.war")]) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"YZYWeiXin.war#cnsoftbei-yzy\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"YZYWeiXin.war#cnsoftbei-yzy\": java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
    Caused by: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory"},
    "WFLYCTL0412: Required services that are not installed:" => ["jboss.persistenceunit.\"YZYWeiXin.war#cnsoftbei-yzy\""],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
}
17:14:50,737 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("deployment" => "labmanagement.war")]) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"labmanagement.war#labUnit\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"labmanagement.war#labUnit\": java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
    Caused by: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory"},
    "WFLYCTL0412: Required services that are not installed:" => ["jboss.persistenceunit.\"labmanagement.war#labUnit\""],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
}
17:14:50,740 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("deployment" => "jpa.war")]) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"jpa.war#engine_diagnosis_system\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"jpa.war#engine_diagnosis_system\": java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
    Caused by: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory"},
    "WFLYCTL0412: Required services that are not installed:" => ["jboss.persistenceunit.\"jpa.war#engine_diagnosis_system\""],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
}
17:14:50,745 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("deployment" => "EngineDiagnosisSystem.war")]) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"EngineDiagnosisSystem.war#engine_diagnosis_system\"" => "org.jboss.msc.service.StartException in service jboss.persistenceunit.\"EngineDiagnosisSystem.war#engine_diagnosis_system\": java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
    Caused by: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory"},
    "WFLYCTL0412: Required services that are not installed:" => ["jboss.persistenceunit.\"EngineDiagnosisSystem.war#engine_diagnosis_system\""],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined

二、原因分析

2.1 报错关键字

　　1.(Controller Boot Thread) WFLYCTL0013: Operation (“add”) failed - address: ([(“deployment” => “YZYWeiXin.war”)]) - failure
　2.org.jboss.msc.service.StartException in service jboss.persistenceunit.\”YZYWeiXin.war#cnsoftbei-yzy\”: java.lang.ClassCastException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory

2.2 可能原因分析

　　1.可能原因一：hibernate与dom4j的配置存在问题，比如版本冲突问题。
　　这个问题其实已经遇到过多次了，在使用
　　mvn clean package wildfly:deploy
　　命令部署项目时也会报关于dom4j的错误，而dom4j大多与hibernate，jpa的配置有关，所以，可能原因一：
　　hibernate与dom4j的配置存在问题，比如版本冲突问题。
　　2.可能原因二：之前的项目存在问题，也是版本冲突问题。

三、问题解决

　　这个解决方法过于笼统，但是能解决问题：
　　1.删掉$WILDFLY_HOME/standalone/deploments目录下部署的项目；
　　
　　2.删掉$WILDFLY_HOME/standalone/configration/standalone.xml文件中出错的项目部署。
　　

四、相关问题

　　服务器启动时端口被占用问题，参见博客：
　　http://blog.youkuaiyun.com/qq_33429968/article/details/72453652