今天上班發現打包專案war包（mvn package命令執行打包）部署到tomcat7，啟動的時候，直接卡住了，沒有任何報錯資訊。其他同事打包卻可以正常啟動。

於是修改日誌跟蹤級別為debug，發現後臺一直在重複載入（進入了死迴圈）。

09:19:00.144 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Ignoring bean creation exception on FactoryBean type check: 
org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'userMapper' defined in file [C:\apache-tomcat-7.0.70_wyszf\webapps\wyszf\WEB-INF\classes\com\xykj\dao\UserMapper.class]: 
Unsatisfied dependency expressed through bean property 'sqlSessionFactory': : 
Error creating bean with name 'sqlSessionFactory' defined in URL [file:/C:/apache-tomcat-7.0.70_wyszf/webapps/wyszf/WEB-INF/classes/les/applicationContext.xml]: Invocation of init method failed; nested exception is org.apache.ibatis.type.TypeException: 
The alias 'RandomSample' is already mapped to the value 'com.xykj.model.vo.RandomSample'.; 
 

詳細檢視日誌，發現出現了一個錯，但是這個異常居然是debug級別的。引起問題的主要原因是：2個package下有一個同名的model類（這個類我做過移動包目錄的操作），但是看了src原始碼目錄下面卻只在model下面有個RandomSample類，為什麼打包的時候會在2個目錄下都存在呢。

檢視mvn package命令執行：

[INFO] Packaging webapp
[INFO] Assembling webapp [quickstart] in [F:\workspaceXytec22222\quickstart_pare
n\quickstart\target\quickstart-0.0.1-SNAPSHOT]
[INFO] Processing war project
[INFO] Copying webapp resources [F:\workspaceXytec22222\quickstart_paren\quickst
art\src\main\webapp]
[INFO] Webapp assembled in [16306 msecs]
[INFO] Building war: F:\workspaceXytec22222\quickstart_paren\quickstart\target\q
uickstart.war
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] quickstart_paren 0.0.1-SNAPSHOT .................... SUCCESS [  0.007 s]
[INFO] quickstart_xylib ................................... SUCCESS [  2.469 s]
[INFO] quickstart 0.0.1-SNAPSHOT .......................... SUCCESS [ 33.262 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 36.141 s
[INFO] Finished at: 2018-05-25T09:56:22+08:00
[INFO] ------------------------------------------------------------------------