fix(camera): identifier verification

src/views/external/camera/index.vue

@@ -162,7 +162,7 @@ export default {
         })
         return
       }
-      if (!/^[0-9a-zA-Z]$/.test(this.camera.identifier)) {
+      if (!/^[0-9a-zA-Z]+$/.test(this.camera.identifier)) {
         this.$message({
           type: 'warning',
           message: '设备标识格式错误仅支持数字和字母'