教师科研管理系统(3)--我的毕业设计

、系统登录的处理代码：                                              

       1．JavaScript 代码：(login.js)                                         

var XMLHttpReq;

                 //创建XMLHttpRequest对象  

              

           

function createXMLHttpRequest() {

                                 if(window.XMLHttpRequest) { //Mozilla 浏览器

                                                XMLHttpReq = new XMLHttpRequest();

                                 }

                                else if (window.ActiveXObject) { // IE浏览器

                                                try {

                                                                XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP");

                                                } catch (e) {

                                                                try {

                                                                                 XMLHttpReq = new ActiveXObject("Microsoft.XMLHTTP");

                                                                } catch (e) {}

                                                }

                                 }

                   }

function validateLogin(){//验证输入是否为空

             var strUserName=document.getElementById("userID").value;

             var strPassword=document.getElementById("pwd").value;

             var type=document.getElementById("type").value;

            if(strUserName==""||strUserName==null){

                alert("请输入用户名!");

                document.getElementById("userID").focus();

                return false;

          }

     if(strPassword==""||strPassword==null){

         alert("请输入密码!");

         document.getElementById("pwd").focus();

         return false;

     }else{

      var url="workmain?action=login";

      var conn="userID="+strUserName+"&pwd="+strPassword+"&leix="+type;

   

      sendRequest(url,conn);

     }

  }  

  function sendRequest(url,conn){

      createXMLHttpRequest();

      XMLHttpReq.open("POST", url, true);

                 XMLHttpReq.onreadystatechange = processResponse;//指定响应函数

                 XMLHttpReq.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

                 XMLHttpReq.send(conn);

  }

 function processResponse(){

   if (XMLHttpReq.readyState == 4) { // 判断对象状态

                       if (XMLHttpReq.status == 200) { // 信息已经成功返回，开始处理信息

                           

                           sendResponse();

            } else { //页面不正常

                window.alert("您所请求的页面有异常。");

            }

        }

  }

 function sendResponse(){

 

  var d=XMLHttpReq.responseXML.getElementsByTagName("success");

  var p=d[0].firstChild.nodeValue;

  if(p=="goindex"){

   gomainindex();

  }else{

  window.alert(p);

  }

  }

 function gomainindex(){

  var url="mainindex.jsp";

  window.navigate(url);

 

 }

 

注:以上只是部分代码(略)