使用Oracle数据库时的org.springframework.jdbc.BadSqlGrammarException:

org.springframework.jdbc.BadSqlGrammarException:
### Error querying database.  Cause: java.sql.SQLException: ORA-: 无效字符

### The error may exist in com/qingmu/dao/UserDao.xml
### The error may involve com.qingmu.dao.UserDao.findUserById-Inline
### The error occurred while setting parameters
### SQL: select id,cusername from cuser where id = ?;
### Cause: java.sql.SQLException: ORA-: 无效字符

; bad SQL grammar []; nested exception is java.sql.SQLException: ORA-: 无效字符

    at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:)
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:)
    at com.sun.proxy.$Proxy23.selectOne(Unknown Source)
    at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:)
    at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:)
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:)
    at com.sun.proxy.$Proxy25.findUserById(Unknown Source)
    at com.qingmu.MainTest.test(MainTest.java:)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
    at java.lang.reflect.Method.invoke(Method.java:)
    at org.junit.runners.model.FrameworkMethod$.runReflectiveCall(FrameworkMethod.java:)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:)
    at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:)
    at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:)
    at org.junit.runners.ParentRunner$.run(ParentRunner.java:)
    at org.junit.runners.ParentRunner$.schedule(ParentRunner.java:)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:)
    at org.junit.runners.ParentRunner.access$(ParentRunner.java:)
    at org.junit.runners.ParentRunner$.evaluate(ParentRunner.java:)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:)
Caused by: java.sql.SQLException: ORA-: 无效字符

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:)
    at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:)
    at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:)
    at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:)
    at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:)
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:)
    at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:)
    at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:)
    at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:)
    at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:)
    at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:)
    at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
    at java.lang.reflect.Method.invoke(Method.java:)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:)
    ...  more