XMLHTTPRequest使用之 发送请求参数.

1.客户端部分

<script language="javascript" type="text/javascript">

var xhr=null;

//创建XMLHTTPRequest

function getXHR()

{

     var _xhr=null;

    if(window.ActiveXObject)

      {

        _xhr=new ActiveXObject("Microsoft.XMLHTTP");
      }

     else if(window.XMLHttpRequest)

      {

          _xhr=new XMLHttpRequest();
       }

    return _xhr;
}

function sendRequest()

{

      if(xhr!=null)

    {

          xhr.onreadystatechange=getResult;

          xhr.open("Get","url",true);

          xhr.send("goyier");
    }
}

function getResult()

{

      if(xhr.readyState==4)

      {

          if(xhr.status==200)

            {

                 alert(xhr.responseText);
             }

       }
}

</script>

<input type="button" name="send" value="发送请求(Get)" onclick="sendRequest();"></input>

//Server端部分

protected void Page_Load(object sender,EventAgrs e)

{

   Response.Clear();

   Response.OutPut.Write("Hello!"+getRequestParams());

   Response.End();

   
}

public string getRequestParams()

{

  Stream paramsStream=Request.InputSteam;

  byte[] resultByte=new byte[paramsStream.Length];

  paramsStream.Read(resultByte,0,paramsStream.Length-1);

  Encoding encode = Encoding.UTF8;

  return encode.GetString(resultByte);
}

//调用结果:

Hello! goyier