From e85f3eaf8b1fa65c5f66dd882b1f896e87099dbf Mon Sep 17 00:00:00 2001
From: Sim Tsai <13759975+SimTsai@users.noreply.github.com>
Date: Thu, 28 Jul 2022 14:52:50 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BD=BF=E7=94=A8=E9=94=AE=E5=AD=98=E5=9C=A8?=
 =?UTF-8?q?=E6=A3=80=E6=B5=8B=E6=9B=BF=E6=8D=A2=E4=BD=BF=E7=94=A8=E5=BC=82?=
 =?UTF-8?q?=E5=B8=B8=E6=8D=95=E8=8E=B7=E6=A8=A1=E5=BC=8F=E6=93=8D=E4=BD=9C?=
 =?UTF-8?q?=E5=AD=97=E5=85=B8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 QCloudCSharpSDK/COSXML/Model/CosRequest.cs | 56 +++++++++-------------
 1 file changed, 23 insertions(+), 33 deletions(-)

diff --git a/QCloudCSharpSDK/COSXML/Model/CosRequest.cs b/QCloudCSharpSDK/COSXML/Model/CosRequest.cs
index b605817..c7fdd0e 100644
--- a/QCloudCSharpSDK/COSXML/Model/CosRequest.cs
+++ b/QCloudCSharpSDK/COSXML/Model/CosRequest.cs
@@ -72,7 +72,7 @@ public bool? IsHttps
             {
                 return isHttps;
             }
-            
+
             set { isHttps = value; }
         }
 
@@ -97,7 +97,7 @@ public string RequestPath
             {
                 return path;
             }
-            
+
             private set { }
         }
 
@@ -139,26 +139,21 @@ public void SetQueryParameter(string key, string value)
         /// <param name="isNeedUrlEncode"></param>
         public void SetQueryParameter(string key, string value, bool isNeedUrlEncode)
         {
-
-            try
+            if (value == null)
             {
+                value = "";
+            }
 
-                if (value == null)
-                {
-                    value = "";
-                }
-
-                if (isNeedUrlEncode)
-                {
-                    value = URLEncodeUtils.Encode(value);
-                }
-
+            if (isNeedUrlEncode)
+            {
+                value = URLEncodeUtils.Encode(value);
+            }
+            if (!queryParameters.ContainsKey(key))
+            {
                 queryParameters.Add(key, value);
             }
-            catch (ArgumentException)
+            else
             {
-                // cover the current value
-                // cover the current value
                 queryParameters[key] = value;
             }
         }
@@ -194,26 +189,21 @@ public void SetRequestHeaders(Dictionary<string, string> headers)
         /// <param name="isNeedUrlEncode"></param>
         public void SetRequestHeader(string key, string value, bool isNeedUrlEncode)
         {
-
-            try
+            if (value == null)
             {
+                value = "";
+            }
 
-                if (value == null)
-                {
-                    value = "";
-                }
-
-                if (isNeedUrlEncode)
-                {
-                    value = URLEncodeUtils.Encode(value);
-                }
-
+            if (isNeedUrlEncode)
+            {
+                value = URLEncodeUtils.Encode(value);
+            }
+            if (!headers.ContainsKey(key))
+            {
                 headers.Add(key, value);
             }
-            catch (ArgumentException)
+            else
             {
-                // cover the current value
-                // cover the current value
                 headers[key] = value;
             }
         }
@@ -315,7 +305,7 @@ public virtual void SetSign(string sign)
         public virtual CosXmlSignSourceProvider GetSignSourceProvider()
         {
             // 默认签署的头部跟参数
-            cosXmlSignSourceProvider.AddHeaderKeys(new List<string>() 
+            cosXmlSignSourceProvider.AddHeaderKeys(new List<string>()
             {
                 "cache-control",
                 "content-disposition",