一个简单的查询，如果参数中有中文。如下：
<select id="xxxx" resultType="hashmap">
select * from talbe_a a where a.kpeople = ${name}
</select>
报错：
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.sql.SQLSyntaxErrorException: ORA-00904: "萧亚轩": 标识符无效
... Caused by: java.sql.SQLSyntaxErrorException: ORA-00904: "萧亚轩": 标识符无效
....
mybatis sql日志：
18:06:36,192 DEBUG JdbcTransaction:47 - Openning JDBC Connection
18:06:36,830 DEBUG PooledDataSource:47 - Created connection 1459361227.
18:06:36,843 DEBUG queryrealactormediatop:47 - ooo Using Connection [oracle.jdbc.driver.T4CConnection@56fc15cb]
18:06:36,843 DEBUG queryrealactormediatop:47 - ==> Preparing: select * from table_a a where v1.kpeople = 萧亚轩
18:06:36,961 DEBUG queryrealactormediatop:47 - ==> Parameters:
注意：“萧亚轩”两边没有单引号，不是“？”的占位符，参数列表里面是没有值。
修改其实很简单：
v1：换$ 为#
<select id="xxxx" resultType="hashmap">
select * from talbe_a a where a.kpeople = #{name}
</select>
v2：添加 ‘’ 单引号
<select id="xxxx" resultType="hashmap">
select * from talbe_a a where a.kpeople = ‘${name}‘
</select>
#只会当成个字符串
$就不一定是字符串，或者其他类型