liferay常见异常及解决方法

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1.Caused by: com.liferay.portal.OldServiceComponentException: Build namespace en has build number 82 which is newer than 80

service.properties

2.QueryException：could not resolve property : stauts of

3.

4.

1.异常：Please make a copy of this read-only list before modifying it

1.原因：集合移除removeAll();

2.异常：Duplicate local variable contractId
2.原因：contractId改变量名已存在，改为其他变量名