修改SN码校验

src/utils/validate.js

@@ -100,7 +100,7 @@ export function isMobile(arg) {
  * @returns {Boolean}
  */
 export function isSnCode(arg) {
-  const reg = /^[a-z|A-Z|0-9]+$/
+  const reg = /^[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?$/
   return reg.test(arg)
 }