android 端

public String UploadHeadImg(Bitmap bitmap,String fileName ) {

String[] arg={"BtyeString","FileName"};
String[] val={bitmaptoString(bitmap),fileName};

return bd.GetWebReturnModel("UploadFile", arg, val);

}
public String bitmaptoString(Bitmap bitmap) {
// 将Bitmap转换成字符串

String string = null;

ByteArrayOutputStream bStream = new ByteArrayOutputStream();

bitmap.compress(CompressFormat.PNG, 100, bStream);

byte[] bytes = bStream.toByteArray();

string = Base64.encode(bytes);

return string;

}

public Bitmap stringtoBitmap(String string) {

// 将字符串转换成Bitmap类型

Bitmap bitmap = null;

try {

byte[] bitmapArray;

bitmapArray = Base64.decode(string);

bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0,

bitmapArray.length);

} catch (Exception e) {

e.printStackTrace();

}
return bitmap;

}

服务瑞

#region 文件上传
[WebMethod(Description = " 文件上传", EnableSession = true)]
public string UploadFile(string BtyeString,String FileName)
{
try
{
string path = Server.MapPath("/View/UpLoad/HeadImg");
byte[] bytes = Convert.FromBase64String(BtyeString);
System.IO.MemoryStream ms = new System.IO.MemoryStream(bytes);
System.Drawing.Bitmap b = (System.Drawing.Bitmap)System.Drawing.Image.FromStream(ms);
//图片保存路径

String NewFileName = DateTime.Now.ToString("yyyyMMddhhmmss") + "_" + FileName;
b.Save(path + "/" + NewFileName);

return new JsonMessage { Success = true, Data = "http://www.mamicode.com/View/UpLoad/HeadImg"+NewFileName , Message = "操作成功" }.ToString();

}