From 6affdee5f139d7ce3bc559d63d7c2e983937051d Mon Sep 17 00:00:00 2001
From: konbai <1527468660@qq.com>
Date: Fri, 21 Jul 2023 00:33:24 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20=E6=B5=81=E7=A8=8B?=
 =?UTF-8?q?=E6=A8=A1=E5=9E=8B=E6=9C=AA=E8=AE=BE=E8=AE=A1=E6=B5=81=E7=A8=8B?=
 =?UTF-8?q?=E5=9B=BE=EF=BC=8C=E9=83=A8=E7=BD=B2=E6=93=8D=E4=BD=9C=E4=BC=9A?=
 =?UTF-8?q?=E5=AF=BC=E8=87=B4NPE=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/ruoyi/workflow/service/impl/WfModelServiceImpl.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ruoyi-system/src/main/java/com/ruoyi/workflow/service/impl/WfModelServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/workflow/service/impl/WfModelServiceImpl.java
index e74d4441..ab66dd7b 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/workflow/service/impl/WfModelServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/workflow/service/impl/WfModelServiceImpl.java
@@ -1,5 +1,6 @@
 package com.ruoyi.workflow.service.impl;
 
+import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
@@ -319,6 +320,9 @@ public class WfModelServiceImpl extends FlowServiceFactory implements IWfModelSe
         }
         // 获取流程图
         byte[] bpmnBytes = repositoryService.getModelEditorSource(modelId);
+        if (ArrayUtil.isEmpty(bpmnBytes)) {
+            throw new RuntimeException("请先设计流程图！");
+        }
         String bpmnXml = StringUtils.toEncodedString(bpmnBytes, StandardCharsets.UTF_8);
         BpmnModel bpmnModel = ModelUtils.getBpmnModel(bpmnXml);
         String processName = model.getName() + ProcessConstants.SUFFIX;