javax.servlet.ServletException: java.lang.NoSuchMethodError: antlr.collections.A

java.sql.SQLException: Invalid argument value: java.io.NotSerializableException
Caused by: java.io.NotSerializableException: org.apache.commons.fileupload.DeferredFileOutputStream

解决了：（原因）（raf.getFilename()）主要是SQL语句是没有取得图片，（改为：raf.getFilename().getFileName()）

java.lang.IllegalArgumentException: argument type mismatch(类型不匹配)

org.hibernate.MappingException: Unsupported cascade style: sava-update

java.lang.NoSuchMethodError: antlr.collections.AST.getLine()I -->jar包重复异常
解决了：是因为在同一个项目里有两个jar包antlr-2.7.2.jar和antlr-2.7.6.jar
由于版本问题有冲突，所以报此异常，只要把版本低的删掉就ok..........

ids for this class must be manually assigned before calling save(): com.fendou.system.po.ConfigPublicAttribute
已解决：意思是在调用save()方法时候要手动添加（assigned ）id，
<generator class="assigned" >
所以要把配置文件该如下：
<generator class="sequence" >
          <param name="sequence">seq_majorIssueId</param>
   </generator>

org.springframework.dao.DataIntegrityViolationException: Could not execute JDBC batch update; nested exception is org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
 unique constraint (HRC.SYS_C005274) violated

类型不匹配:
java.lang.IllegalArgumentException: Cannot invoke com.fendou.system.web.actionform.QuestionForm.setConfigMajor on bean class 'class com.fendou.system.web.actionform.QuestionForm' -
argument type mismatch - had objects of type "java.lang.String" but expected signature "com.fendou.system.po.ConfigMajor
主要是页面传过来的是String类型，而QuestionForm接收的是一个对象，所以说类型不匹配

org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.fendou.engage.po.ConfigQuestionOption#1]

org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL):
 Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.
已解决：意思是在调用save()方法时候要执行事务提交

 Content is not allowed in prolog.
猫有问题.

org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named '/engage/saveCommonExam' must be of type [org.apache.struts.action.Action],
 but was actually of type [com.fendou.engage.web.action.SaveCommonExamTypeAction]

javax.servlet.ServletException: java.lang.NoSuchMethodError: com.fendou.salary.service.IPersonalSalaryService.listPersonalSalaryDetail(Ljava/lang/String;)Ljava/util/List;