diff --git a/xhpc-modules/xhpc-common/src/main/java/com/xhpc/common/data/down/StartChargingData.java b/xhpc-modules/xhpc-common/src/main/java/com/xhpc/common/data/down/StartChargingData.java
index 4ed08207..aedb1c3c 100644
--- a/xhpc-modules/xhpc-common/src/main/java/com/xhpc/common/data/down/StartChargingData.java
+++ b/xhpc-modules/xhpc-common/src/main/java/com/xhpc/common/data/down/StartChargingData.java
@@ -11,7 +11,7 @@ public class StartChargingData {
     private String pileNo; //桩号
     @NotBlank(message = "枪号不能为空")
     private String gunId; //枪号
-    @Min(value = 5, message = "账户余额不能小于5")
+    @Min(value = 500, message = "账户余额不能小于5.00元(500分)")
     private Integer balance; //账户余额(精度:小数点后2位)=实际金额(元)×100
     private String tel;
     private String logicCardNo = "0000000000000000"; //逻辑卡号 16进制,无需补零
diff --git a/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/ChargingController.java b/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/ChargingController.java
index f5679998..275722e7 100644
--- a/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/ChargingController.java
+++ b/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/ChargingController.java
@@ -68,11 +68,15 @@ public class ChargingController {
 
         R<Object> r;
         JSONObject responseJson = (JSONObject) JSON.parse(response);
-        int code = responseJson.getInteger("code");
-        if (code != 200) {
-            r = R.fail(code, responseJson.getString("msg"));
+        if (responseJson == null) {
+            r = R.fail("Native服务调用失败");
         } else {
-            r = R.ok(responseJson.get("data"), responseJson.getString("msg"));
+            int code = responseJson.getInteger("code");
+            if (code != 200) {
+                r = R.fail(code, responseJson.getString("msg"));
+            } else {
+                r = R.ok(responseJson.get("data"), responseJson.getString("msg"));
+            }
         }
         return r;
     }