积分灵兰币控制负数

src/main/java/com/peanut/modules/book/controller/MyUserController.java

@@ -631,6 +631,9 @@ public class MyUserController {
     public R pointChange(@RequestParam Map<String, String> params){
         String pointType = params.get("pointType");
         String pointAmount = params.get("pointAmount");
+        if (Integer.valueOf(pointAmount)<=0){
+            return R.error("变动金额不能为负数");
+        }
         String id = params.get("id");
         MyUserEntity byId = userService.getById(id);
         int i = 0;