java - 同じページに移動ページが必要

Question

私の ajax は次のようになります。 function getXMLHttpRequest() { var xmlHttpReq = false; if (window.XMLHttpRequest) { xmlHttpReq = new XMLHttpRequest(); } その他の場合 (window.ActiveXObject) { 試す {

      xmlHttpReq = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (exp1) {
      try {

        xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (exp2) {
        xmlHttpReq = false;
      }
    }
  }
  return xmlHttpReq;
}

function makeRequest() {
  var xmlHttpRequest = getXMLHttpRequest();
  xmlHttpRequest.onreadystatechange = getReadyStateHandler(xmlHttpRequest);
  xmlHttpRequest.open("POST", "http://abc.com:8080/someservletServlet/", true);
  xmlHttpRequest.setRequestHeader("Content-Type",
      "application/x-www-form-urlencoded");
  xmlHttpRequest.send(null);
}


function getReadyStateHandler(xmlHttpRequest) {

    return function() {
    if (xmlHttpRequest.readyState == 4) {
      if (xmlHttpRequest.status == 200) {

          document.getElementById("xml").value = xmlHttpRequest.responseText;
      } else {
        alert("HTTP error " + xmlHttpRequest.status + ": " + xmlHttpRequest.statusText);
      }
    }
  };
}   but somehow the servlet is not bringing the response it should bring. can you help. what could be the possible error.