方案管理-灯组配置，给前端返回错误信息

signal-control-service/src/main/java/net/wanji/web/controller/scheme/CrossConfigController.java

@@ -39,7 +39,12 @@ public class CrossConfigController {
             @ApiResponse(code = 200, message = "OK", response = JsonViewObject.class),
     })
     public JsonViewObject saveLaneInfo(@RequestBody SaveLaneInfoDTO saveLaneInfoDTO) {
-        crossConfigService.saveLaneInfo(saveLaneInfoDTO);
+        try {
+            crossConfigService.saveLaneInfo(saveLaneInfoDTO);
+        } catch (Exception e) {
+            JsonViewObject jsonViewObject = JsonViewObject.newInstance();
+            return jsonViewObject.fail(e.getMessage());
+        }
         JsonViewObject jsonViewObject = JsonViewObject.newInstance();
 
         return jsonViewObject.success();