汇率校验

src/main/java/com/example/demo/controller/RateController.java

@@ -13,6 +13,7 @@ import org.springframework.util.ObjectUtils;
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 
+import java.math.BigDecimal;
 import java.util.Map;
 
 
@@ -59,8 +60,8 @@ public class RateController {
         if (ObjectUtils.isEmpty(rate.getRateName())) {
             return Result.error("汇率名称不能为空");
         }
-        if (rate.getNum() == null) {
-            return Result.error("汇率数值不能为空");
+        if(rate.getNum()==null || rate.getNum().compareTo(BigDecimal.ZERO) <= 0){
+            return Result.error(("汇率数值不能小于等于0"));
         }
         rateService.update(rate);
         return Result.success("编辑成功");