Mybatis中注解方式使用动态SQL拼接

在Mybatis中以注解开发的方式使用动态sql拼接语句

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 ' where code = null or' at line 1
; 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 ' where code = null or' at line 1
	at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:234)

在@Service注解属性中使用包裹语句，表示以脚本方式执行

 @Select("")
    public List findPage(@Param("queryString") String queryString);