diff --git a/app/service/OssService.php b/app/service/OssService.php
index 21d4d1e..d141105 100644
--- a/app/service/OssService.php
+++ b/app/service/OssService.php
@@ -65,47 +65,18 @@ class OssService
     public function generatePrivateUrl($objectKey, $expireTime = 3600)
     {
         try {
-            // 验证参数
-            if (empty($objectKey)) {
-                throw new \InvalidArgumentException('ObjectKey cannot be empty');
-            }
-            if ($expireTime <= 0) {
-                throw new \InvalidArgumentException('ExpireTime must be greater than 0');
-            }
-
-            // 记录更详细的调试信息
-            error_log("OSS URL Generation Debug:");
-            error_log("Bucket: " . $this->bucket);
-            error_log("ObjectKey: " . $objectKey);
-            error_log("ExpireTime: " . $expireTime);
-            error_log("Current Time: " . time());
-            error_log("Expiration Time: " . (time() + $expireTime));
-            error_log("AccessKeyId: " . substr($this->accessKeyId, 0, 4) . "****");
-            error_log("Endpoint: " . $this->endpoint);
-            
-            // 检查对象是否存在
-            if (!$this->ossClient->doesObjectExist($this->bucket, $objectKey)) {
-                error_log("OSS Object does not exist: " . $objectKey);
-                throw new \RuntimeException('Object does not exist in OSS');
-            }
-            
             // 生成 OSS 私有 URL
             $url = $this->ossClient->signUrl($this->bucket, $objectKey, $expireTime);
             
-            // 记录生成的 URL
-            error_log("Generated URL: " . $url);
+            // 修复签名编码问题
+            $url = str_replace('%253D', '%3D', $url);
+            $url = str_replace('%252F', '%2F', $url);
+            $url = str_replace('%252B', '%2B', $url);
             
             return $url;
         } catch (OssException $e) {
             error_log("OSS Error: " . $e->getMessage());
-            error_log("Error Code: " . $e->getCode());
-            error_log("Error Trace: " . $e->getTraceAsString());
-            error_log("Request ID: " . $e->getRequestId());
             throw new \RuntimeException('OSS Error: ' . $e->getMessage());
-        } catch (\Exception $e) {
-            error_log("General Error in generatePrivateUrl: " . $e->getMessage());
-            error_log("Error Trace: " . $e->getTraceAsString());
-            throw new \RuntimeException('Error generating private URL: ' . $e->getMessage());
         }
     }
 }
\ No newline at end of file