Unity3D 集成 Face++ FacePlusPlus httpClient http协议 byte数组转string

//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 );
}