具体代码如下：

private string JsonToUnicode(string input) { input = input.Replace("\\\"", "\""); input = input.Replace("\\/", "https://www.xp.cn/"); string result; if (!input.Contains("\\u")) { result = input; } else { StringBuilder stringBuilder = new StringBuilder(); if (input.IndexOf("\\u") > 0) { stringBuilder.Append(input.Substring(0, input.IndexOf("\\u"))); input = input.Substring(input.IndexOf("\\u")); } if (!string.IsNullOrEmpty(input)) { string[] array = input.Split(new string[] { "\\u" }, StringSplitOptions.RemoveEmptyEntries); string[] array2 = array; for (int i = 0; i < array2.Length; i++) { string text = array2[i]; if (text.Length > 4) { string arg = text.Substring(4); stringBuilder.Append((char)int.Parse(text.Substring(0, 4), NumberStyles.HexNumber) + arg); } else { if (text.Length == 4) { stringBuilder.Append((char)int.Parse(text, NumberStyles.HexNumber)); } else { if (text.Length < 4 && text.Length > 0) { stringBuilder.Append(text); } } } } } result = stringBuilder.ToString(); } return result; }