Caused by: org.springframework.dao.DataIntegrityViolationException:异常的解决

今天再写项目时，遇到了下面的错误：

Caused by: org.springframework.dao.DataIntegrityViolationException: 
### Error updating database.  Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'moudle' at row 1
### The error may involve com.imooc.sm.dao.LogDao.insert-Inline
### The error occurred while setting parameters
### SQL: insert into log values (?,?,?,?,?,?)
### Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'moudle' at row 1
; SQL []; Data truncation: Data too long for column 'moudle' at row 1; nested exception is com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'moudle' at row 1
	at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:100)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	at com.sun.proxy.$Proxy17.insert(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:57)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	at com.sun.proxy.$Proxy22.insert(Unknown Source)
	at com.imooc.sm.service.impl.LogServiceImpl.addLoginLog(LogServiceImpl.java:34)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
	at com.sun.proxy.$Proxy23.addLoginLog(Unknown Source)
	at com.imooc.sm.global.LogAdvice.log(LogAdvice.java:103)
	at com.imooc.sm.global.LogAdvice.loginLog(LogAdvice.java:78)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:603)
	at org.springframework.aop.aspectj.AspectJAfterAdvice.invoke(AspectJAfterAdvice.java:46)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:644)
	at com.imooc.sm.controller.SelfController$$EnhancerBySpringCGLIB$$8a4cb8fe.login()
	... 32 more
Caused by: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'moudle' at row 1
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3971)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2487)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858)
	at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1197)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:46)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:74)
	at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:50)
	at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
	at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:185)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
	... 67 more

提取主要错误信息（如下）：
1、Caused by: org.springframework.dao.DataIntegrityViolationException:
2、Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column ‘moudle’ at row 1
通过在网上查阅资料发现，DataIntegrityViolationException是指：insert或update语句违反了整体性，而我遇到的错误是.MysqlDataTruncation: Data truncation: Data too long for column ‘moudle’ at row 1。这个意思是是我在插入的“moudle”的这个字段的信息太长了。
然后我就 发现了代码中的错误：

log.setMoudle(joinPoint.getTarget().getClass()**.getName()**);
System.out.println(joinPoint.getTarget().getClass().getName());

上述代码中getName()用的不正确，应该用getSimpleName();
如果用getName(),则它的输出结果是：
com.imooc.sm.controller.SelfController
然后将它改为getSimpleName的话，

log.setMoudle(joinPoint.getTarget().getClass().getSimpleName());
        System.out.println(joinPoint.getTarget().getClass().getSimpleName());

输出结果为：
SelfController
由此可见他们两个的区别：
根据API中的定义：

Class.getName()：以String的形式，返回Class对象的“实体”名称；

Class.getSimpleName()：获取源代码中给出的“底层类”简称。

再一个，我列出常见的springDAO异常：

异常	何时抛出
CleanupFailureDataAccessException	一项操作成功地执行，但在释放数据库资源时发生异常（例如，关闭一个Connection）
DataAccessResourceFailureException	数据访问资源彻底失败，例如不能连接数据库
DataIntegrityViolationException	Insert或Update数据时违反了完整性，例如违反了惟一性限制
DataRetrievalFailureException	某些数据不能被检测到，例如不能通过关键字找到一条记录
DeadlockLoserDataAccessException	当前的操作因为死锁而失败
IncorrectUpdateSemanticsDataAccessException	Update时发生某些没有预料到的情况，例如更改超过预期的记录数。当这个异常被抛出时，执行着的事务不会被回滚
InvalidDataAccessApiusageException	一个数据访问的JAVA API没有正确使用，例如必须在执行前编译好的查询编译失败了
invalidDataAccessResourceUsageException	错误使用数据访问资源，例如用错误的SQL语法访问关系型数据库
OptimisticLockingFailureException	乐观锁的失败。这将由ORM工具或用户的DAO实现抛出
TypemismatchDataAccessException	Java类型和数据类型不匹配，例如试图把String类型插入到数据库的数值型字段中
UncategorizedDataAccessException	有错误发生，但无法归类到某一更为具体的异常中