Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL

问题描述：在使用mybatis 动态sql时，发现自己写的sql没有问题，单元测试也不报错。
解决方案：sql语句部分可能存在中文字符的空格，重新写一遍红色框的sql就解决了

org.springframework.jdbc.BadSqlGrammarException: 
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '??????
????????cityarea like "%??%"
??????
???' at line 2
### The error may exist in file [F:\workspace\eclipse\TeachPlatformManage\target\classes\com\manage\mapping\StudentMapper.xml]
### The error may involve com.manage.dao.IStudentDao.getPageUser-Inline
### The error occurred while setting parameters
### SQL: SELECT * FROM student       WHERE 　　　　　　 　　　　　　　　cityarea like "%岳麓%" 　　　　　　 　　　
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '??????
????????cityarea like "%??%"
??????
???' at line 2
; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '??????
????????cityarea like "%??%"
??????
???' at line 2
 at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:231)
 at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
 at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
 at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
 at com.sun.proxy.$Proxy17.selectList(Unknown Source)
 at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:198)
 at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:119)
 at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
 at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
 at com.sun.proxy.$Proxy19.getPageUser(Unknown Source)
 at com.manage.service.impl.StudentServiceImpl.getPageUser(StudentServiceImpl.java:36)
 at test.Test1.testStudentPage(Test1.java:72)
 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:498)
 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
 at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
 at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
 at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:232)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
 at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
 at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:175)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '??????
????????cityarea like "%??%"
??????
???' at line 2
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
 at com.mysql.jdbc.Util.handleNewInstance(Util.java:400)
 at com.mysql.jdbc.Util.getInstance(Util.java:383)
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:980)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3847)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3783)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2447)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2594)
 at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2545)
 at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1901)
 at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1193)
 at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:169)
 at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:59)
 at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:73)
 at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:60)
 at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
 at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
 at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
 at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77)
 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
 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:498)
 at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
 ... 36 more