Fix ObjectKeyUtil bug

src/main/java/com/backendsys/modules/upload/utils/ObjectKey/ObjectKeyUtil.java

@@ -1,5 +1,6 @@
 package com.backendsys.modules.upload.utils.ObjectKey;
 
+import cn.hutool.core.util.StrUtil;
 import com.backendsys.modules.sdk.douyincloud.tos.service.DouyinTosService;
 import com.backendsys.modules.sdk.tencentcloud.cos.service.TencentCosService;
 import com.backendsys.modules.upload.entity.ObjectKey;
@@ -46,20 +47,24 @@ public class ObjectKeyUtil {
             target = 3;
         }
         // 去掉协议头（http://、https://）后，再取前缀
-        int domainStart = url.indexOf(prefix);
-        if (domainStart == -1) {
+        if (StrUtil.isNotEmpty(prefix)) {
+            int domainStart = url.indexOf(prefix);
+            if (domainStart == -1) {
+                return null;
+            }
+            // 去掉域名前缀，取后面的路径
+            String object_key = url.substring(domainStart + prefix.length());
+            // 去掉可能的前导斜杠
+            if (object_key.startsWith("/")) {
+                object_key = object_key.substring(1);
+            }
+            ObjectKeyEntity result = new ObjectKeyEntity();
+            result.setObject_key(object_key);
+            result.setTarget(target);
+            return result;
+        } else {
             return null;
         }
-        // 去掉域名前缀，取后面的路径
-        String object_key = url.substring(domainStart + prefix.length());
-        // 去掉可能的前导斜杠
-        if (object_key.startsWith("/")) {
-            object_key = object_key.substring(1);
-        }
-        ObjectKeyEntity result = new ObjectKeyEntity();
-        result.setObject_key(object_key);
-        result.setTarget(target);
-        return result;
     }
 
     /**