mybatis格式化异常：NumberFormatException，For input string:"x"
https://segmentfault.com/a/1190000006577082
问题定位：该问题通常出现在动态sql中，使用String与char类型做比较。如：
<if test="segment != null and segment != '' and segment == '1'">
解决方案：
--方案一 <if test="segment != null and segment != '' and segment == '1'.toString()"> --方案二 <if test='segment != null and segment != '' and segment == "1"> --方案三 <if test="segment != null and segment != '' and segment == "1"">
