add json util

Helpers/SimApiStorage.cs

@@ -41,7 +41,6 @@ namespace SimApi.Helpers
 
             ServeUrl = options.ServeUrl;
             Bucket = options.Bucket;
-            Console.WriteLine($"{endpoint} == {options.AccessKey} == {options.SecretKey}");
             var mcb = new MinioClient().WithEndpoint(endpoint)
                 .WithCredentials(options.AccessKey, options.SecretKey);
             if (useSsl)
@@ -71,12 +70,12 @@ namespace SimApi.Helpers
             }
         }
 
-        public string UploadFile(string path, Stream stream)
+        public string UploadFile(string path, Stream stream,string contentType = "image/png")
         {
             try
             {
-                Mc.PutObjectAsync(new PutObjectArgs().WithBucket(Bucket).WithObject(path).WithStreamData(stream))
-                    .Wait();
+                Mc.PutObjectAsync(new PutObjectArgs().WithBucket(Bucket).WithObject(path).
+                    WithObjectSize(stream.Length).WithStreamData(stream).WithContentType(contentType)).Wait();
                 return null;
             }
             catch (MinioException e)

Helpers/SimApiUtil.cs

@@ -1,6 +1,9 @@
 using System.Security.Cryptography;
 using System.Text;
+using System.Text.Encodings.Web;
+using System.Text.Json;
 using System.Text.RegularExpressions;
+using System.Text.Unicode;
 
 namespace SimApi.Helpers
 {
@@ -36,5 +39,18 @@ namespace SimApi.Helpers
 
             return strbul.ToString();
         }
+
+        /// <summary>
+        /// 将对象序列化成JSON （控制台输出中文不会被编码）
+        /// </summary>
+        /// <param name="obj"></param>
+        /// <returns></returns>
+        public static string Json(object obj)
+        {
+            return JsonSerializer.Serialize(obj, new JsonSerializerOptions
+            {
+                Encoder = JavaScriptEncoder.Create(UnicodeRanges.All)
+            });
+        }
     }
 }