Unity 联网小测试（WWW）

using UnityEngine;
using System.Collections;

public class WebTest {

    #region 单例类
    private static WebTest mInstance = new WebTest();

    public static WebTest Instance
    {
        get{ return mInstance; }
    }
    #endregion

    /// <summary>
    /// 发送读取消息
    /// </summary>
    /// <param name="url">要访问的url</param>
    /// <returns>等待返回数据</returns>
    public IEnumerator ResMessage(string url)
    {
        WWW www_instance = new WWW(url);
        yield return www_instance;

        if (www_instance.text == null)
        {
            Debug.LogError("NULL !");
        }
        else
        {
            Debug.Log(www_instance.text);
        }
    }

}