图片转base64字符串，到接口后，再转回保存.代码里面是转成byte[]之后转的，也可以用base64字符串直接转图片.
只想记录一下简单的流程。
1，服务端
保存图片业务代码：
public class UpLoadFile
{
public string UpLoad(string fileName,string filePath,byte[] fileData)
{
Bitmap map =BitmapFromBytes(fileData);
filePath = System.Web.Hosting.HostingEnvironment.MapPath(@”~/”) +”images\\” + fileName;
map.Save(filePath, ImageFormat.Jpeg);
return filePath;
} /// <summary>
/// byte[]数组转换为Bitmap
/// </summary>
/// <param name=”bytes”>byte[]数组</param>
/// <returns></returns>
public static Bitmap BitmapFromBytes(byte[] bytes)
{
Bitmap bitmap = null;
try
{
using (MemoryStream stream = new MemoryStream(bytes))
{
bitmap = new Bitmap((Image)new Bitmap(stream));
}
}
catch { } return bitmap;
}
} 控制器代码: 在这里使用dynamic的时候犯了一个错,特别指出，使用过这个Convert.FromBase64String(fileInfo.fileData)，这是不对的，fileInfo.fileData并不是string，写成这样就是自己思想固化的直接体现。。。 public class UpLoadController : ApiController
{
[HttpPost]
public string UpLoadFile(dynamic fileInfo)
{
string fileName = fileInfo.fileName;
string filePath = string.Empty;
string fileData1 = fileInfo.fileData;
byte[] fileData = Convert.FromBase64String(fileData1);
BLL.UpLoadFile upLoad = new BLL.UpLoadFile(); return upLoad.UpLoad(fileName, filePath, fileData);
}
[HttpPost]
public string Test()
{
return “123”;
}
} 2,客户端代码,winfrom 调用接口 private async void button3_Click(object sender, EventArgs e)
{
//创建一个处理序列化的DataContractJsonSerializer
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(FileInfo));
MemoryStream ms = new MemoryStream();
FileInfo fileInfo = new FileInfo()
{
fileName = “123.jpeg”,
fileData =Convert.ToBase64String( GetImage())
};
//将资料写入MemoryStream
serializer.WriteObject(ms, fileInfo);
//一定要在这设定Position
ms.Position = 0;
HttpContent content = new StreamContent(ms);//将MemoryStream转成HttpContent
content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(“application/json”);
HttpClient client = new HttpClient();
HttpResponseMessage response = client.PostAsync(“http://localhost:803/api/UpLoad/UpLoadFile” , content).Result;
if (response.IsSuccessStatusCode)
{
string ret = response.Content.ReadAsStringAsync().Result;
string json = JsonConvert.DeserializeObject(ret).ToString();
MessageBox.Show(“成功 :”+json);
}
} 实体类 [DataContract]
public class FileInfo
{
[DataMember]
public string fileName
{
get;
set;
}
[DataMember]
public string fileData
{
get;
set;
}
}