请问C3100中例子Http server中POST方式如何取得返回值？

我在底层返回GET没问题，但返回POST是web页面显示无内容。

下位机代码

if(pal_Memcmp(ptr, CAN_POST_token, pal_Strlen(CAN_POST_token)) == 0){

  processCANsend(ptr);

  ptr = pResponse->ResponseData.token_value.data;

  pResponse->ResponseData.token_value.len = 0;

 pal_Strcpy(ptr, "{\"id\"=182,\"data\"=\"30 31 32 33 34 35 36 37\"}");

pResponse->ResponseData.token_value.len += pal_Strlen(ptr);

}

上位机代码：

function SendPacket1()

{

var params = "__SL_P_UCA=";  //"__SL_P_UDW=";

params += document.getElementById("CAN_ID").value;

params += ",";

params += document.getElementById("CAN_Data").value;

params += ",";

HTTPrequest.open("POST","No_content", true);

HTTPrequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

HTTPrequest.setRequestHeader("Content-length", params.length);

HTTPrequest.setRequestHeader("Connection", "close");

HTTPrequest.onreadystatechange = function()

{

if (HTTPrequest.readyState==4 && HTTPrequest.status==200)

{

            text1 = HTTPrequest.responseText;

}

}

HTTPrequest.send(params);

}

监控所得，下位机确实运行代码了，但web返回状态为204