1、新建ASP.NET MVC项目

2、新建控制器 WXAPIController

3、编写代码

private string access_token = "feilongnet.com";

[HttpGet]

public ActionResult Index()

{

string echostr = Request.QueryString["echostr"];

if (CheckSignature())

{

if (!string.IsNullOrEmpty(echostr))

{

return Content(echostr);

}

else

{

return Content("echostr 不合法");

}

}

else

{

return Content("echostr 不合法");

}

}

/// <summary>

/// 微信签名验证

/// </summary>

/// <returns>返回验证结果</returns>

private bool CheckSignature()

{

string signature = Request.QueryString["signature"]; //post 用.Form

string timestamp = Request.QueryString["timestamp"];

string nonce = Request.QueryString["nonce"];

string[] arrTmp = { access_token, timestamp, nonce };

Array.Sort(arrTmp); //字典序排序

//将三个参数字符串拼接成一个字符串进行sha1加密

string strTmp = string.Join("", arrTmp);

strTmp = GetHash1(strTmp);

//将获得的字符串与signature对比，标识该请求来源于微信

if (strTmp.ToLower() == signature)

{

return true;

}

else

{

return false;

}

}

/// <summary>

/// 将字符串进行SHA1加密

/// </summary>

/// <param name="str">要加密的字符串</param>

/// <returns></returns>

private string GetHash1(string str)

{

SHA1 sha1 = SHA1.Create();

byte[] data = sha1.ComputeHash(Encoding.UTF8.GetBytes(str));

StringBuilder sb = new StringBuilder();

for (int i = 0; i < data.Length; i++)

{

sb.Append(data[i].ToString("x2").ToLower());

}

return sb.ToString();

}

5、微信平台设置--接口配置信息

接口配置信息