CharacterTypeHandler#getNullableResult() throws StringIndexOutOfBoundsException #2368
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this is a basic error, the condition statement miss the [String !=""] condition in if(...);
in this case, i execute the select sql statement, and the resultType include a property -- Character type, when the DataBase return a "", Mybatis will throw a Exception: index out of range, becasue the array's length is 0 in the statement -- "return columnValue.charAt(0);"