//開始由于要实现跨平台。考虑过用curl封装c++的dll(android *.so)的方式，在c#Dllimport实现
//后来发现Unity3D本身支持http协议。且face++的api都是http訪问返回json串的。
//在看过face++ phpsdk c#sdk androidsdk之后突发奇想，想到例如以下方法
//Unity3d 集成 Face++的好方法public float fWaitProgress = 0;
public string strResult = "";//POST请求(多个參数)
public IEnumerator POST(string url, Dictionary<string, string> post)
{ //表单   WWWForm form = new WWWForm();  form.AddField("api_key", FACE_KEY);form.AddField("api_secret", FACE_SECRET);//从集合中取出全部參数。设置表单參数（AddField()).  foreach (KeyValuePair<string, string> post_arg in post)  {  form.AddField(post_arg.Key, post_arg.Value);  }  //表单传值，就是post   WWW www = new WWW(url, form);  yield return www;  fWaitProgress = www.progress;  if (www.error != null)  {  //POST请求失败  strResult =  "error :" + www.error; }  else  {  //POST请求成功  strResult = www.text;  }
}
//POST请求(单个參数)
public IEnumerator POST(string url, string key, string value)
{ //表单   WWWForm form = new WWWForm();  form.AddField("api_key", FACE_KEY);form.AddField("api_secret", FACE_SECRET);form.AddField(key, value);  //表单传值，就是post   WWW www = new WWW(url, form);  yield return www;  fWaitProgress = www.progress;  if (www.error != null)  {  //POST请求失败  strResult =  "error :" + www.error; }  else  {  //POST请求成功  strResult = www.text;  }
}
//POST请求(二进制參数)
public IEnumerator POST(string url, string key, byte [] bytes,string name,string type)
{ //表单   WWWForm form = new WWWForm();  form.AddField("api_key", FACE_KEY);form.AddField("api_secret", FACE_SECRET);form.AddBinaryData(key, bytes, name, type);//表单传值。就是post   WWW www = new WWW(url, form);  yield return www;  fWaitProgress = www.progress;  if (www.error != null)  {  //POST请求失败  strResult =  "error :" + www.error; }  else  {  //POST请求成功  strResult = www.text;  }
}//使用方法
if (GUI.Button(new Rect(10, 130, 100, 60), "post"))
{ //byte[] pngData = texture2D.EncodeToPNG();      //StartCoroutine(POST(URL_DETECT ,"img",pngData,"test.png","image/png"));         Dictionary<string, string> dic = new Dictionary<string, string>(); dic.Add("url","http://aaaa.com/a.jpg");     //dic.Add("img","c:\\a.jpg");       StartCoroutine(POST(URL_DETECT ,dic));      //StartCoroutine(POST(URL_DETECT ,"img","c:\\a.jpg"));      //unity byte数组转string//byte[] pngData = texture2D.EncodeToPNG();//string strData = System.Text.Encoding.Default.GetString(pngData,0,pngData.Length );
}