一、读取流字符串

Stream resStream = verifyResponse.GetResponseStream(); // 方法一： StreamReader sr = new StreamReader(resStream, Encoding.ASCII); string readerStr = sr.ReadToEnd();                 sr.Close();                 resStream.Close();                 verifyResponse.Close(); return readerStr; //方法二： MemoryStream ms = new MemoryStream(); byte[] buffer = new byte[4096]; while (true) { int sz = resStream.Read(buffer, 0, 4096); if (sz == 0) break;                     ms.Write(buffer, 0, sz); } string content = Encoding.UTF8.GetString(ms.ToArray()); return content; //方法四： int count = 4096; int offset = 0; var buf = new byte[count]; while (count > 0) { int n = resStream.Read(buf, offset, count); if (n == 0) break;                     count -= n;                     offset += n; } string content = Encoding.Default.GetString(buf, 0, buf.Length); return content; //方法五： //开辟内存区域 1024 * 1024 bytes byte[] readBytes = new byte[1024 * 1024 * 5]; //开始读数据 int count = resStream.Read(readBytes, 0, readBytes.Length); //byte[] 转字符串 string readStr = Encoding.UTF8.GetString(readBytes, 0, count); //关闭文件流                     resStream.Close(); //---------------------------------------------------------------------------------------------------------                     //方法六： 读取指定路径下文件的字符串内容 string strContent = string.Empty; FileStream fs = new FileStream(postset, FileMode.Open); byte[] buffer = new byte[fs.Length];                     fs.Read(buffer, 0, buffer.Length);                     strContent = Encoding.Default.GetString(buffer);                     fs.Close(); //方法七：读取指定路径下文件的字符串 string content = ""; using (StreamReader sr = new StreamReader(postset)) {                         content = sr.ReadToEnd(); } return content; 

//将指定的字符串保存到指定路径文件下 using (DAL.MyDbContext db = new DAL.MyDbContext()) { var system = db.System.FirstOrDefault(); StreamReader sr = new StreamReader(res, Encoding.ASCII); string html = sr.ReadToEnd();//字符串 System.IO.FileStream fs = new System.IO.FileStream(Server.MapPath(@"~ImageTemplateA.txt"), System.IO.FileMode.Create, System.IO.FileAccess.Write); //利用新传来的路径实例化一个FileStream对像   System.IO.BinaryWriter bw = new System.IO.BinaryWriter(fs); //实例化一个用于写的BinaryWriter                   bw.Write(html);                 bw.Close();                 fs.Close();                 sr.Close();                 res.Close();                 verifyResponse.Close(); return html; } 

二、字符串格式转成json格式

string postset="xxxxxxxxxxxxxxxxxxxxxxxxxxx"; //方法一： JObject jo = JObject.Parse(postset); JToken confidence = null; if (jo.TryGetValue("request_id", out confidence)) { int persent = Int32.Parse(confidence.ToString()); } //方法二：(字符串格式) JObject read = JsonConvert.DeserializeObject<JObject>(postset); string resul = read["result"].ToString(); string id = read["request_id"].ToString(); //方法三：(对象形式)（尝试未实现，但有此写法） //需要创建一个类，存储反馈的成员属性 public class MergeFace { /// <summary> /// 请求的唯一的字符串 /// </summary> public string request_id { get; set; } /// <summary> /// 融合后的图片(base64 编码的二进制图片) /// </summary> public string result { get; set; } /// <summary> /// 整个请求所花费的时间(单位为毫秒) /// </summary> public string time_used { get; set; } /// <summary> /// 当发生错误时才返回 /// </summary> public string error_message { get; set; } } /// <summary> /// 字符串转json格式 /// </summary> /// <param name="jsonStr">需要转的字符串</param> /// <returns></returns> public MergeFace GetData(string jsonStr) { return (MergeFace)Newtonsoft.Json.JsonConvert.DeserializeObject(jsonStr, typeof(/*MergeFace*/)); } MergeFace merface = GetData(readStr); var read = JsonConvert.DeserializeObject<MergeFace>(readStr); string err=read.error_message; string result=read.result; 

三、base64字符串转图片

string base64="xxxxxxxxxxxxx"; //方法一： byte[] bytes = Convert.FromBase64String(base64); MemoryStream ms = new MemoryStream();                 ms.Write(bytes, 0, bytes.Length); Bitmap bmp = new Bitmap(ms); return bmp; //方法二： byte[] bytes = Convert.FromBase64String(base64); MemoryStream memStream = new MemoryStream(bytes); BinaryFormatter binFormatter = new BinaryFormatter(); Image img = (Image)binFormatter.Deserialize(memStream); return img; //方法三： byte[] bt = Convert.FromBase64String(base64); System.IO.MemoryStream stream = new System.IO.MemoryStream(bt); Bitmap bitmap = new Bitmap(stream); return bitmap;