【CHG】导出DXF文件时图片加载失败

railway-common/src/main/java/com/railway/common/utils/http/HttpUtils.java

@@ -134,7 +134,11 @@ public class HttpUtils {
         .openConnection();
     conn.setInstanceFollowRedirects(false);
     conn.setConnectTimeout(5000);
-    return conn.getHeaderField("Location");
+    String redirectUrl = conn.getHeaderField("Location");
+    if(null == redirectUrl){
+      redirectUrl = path;
+    }
+    return redirectUrl;
   }
 
   /**