字符串utf-8相互转换
--------字符串转utf-8
UTF8Encoding utf8 = new UTF8Encoding();
byte[] encodedBytes = utf8.GetBytes(json);
----------------------utf-8转字符串
string inputString = System.Text.Encoding.UTF8.GetString(response);
--------字符串转utf-8
UTF8Encoding utf8 = new UTF8Encoding();
byte[] encodedBytes = utf8.GetBytes(json);
----------------------utf-8转字符串
string inputString = System.Text.Encoding.UTF8.GetString(response);