ajax简单应用.doc

单击默认密码按钮 查找数据库 然后将查找的内容输出到初始密码文本框内 而不刷新整个页面/创建创建XMLHttpRequest对象var XMLHttpReq;var currentSort; 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) /onclick中调用方法 function showPsw() sendRequestPsw(control/center/data.do?method=findDefinePsw); /发送请求函数function sendRequestPsw(url) createXMLHttpRequest();XMLHttpReq.open(GET, url, true);XMLHttpReq.onreadystatechange = processResponse;/指定响应函数XMLHttpReq.send(null); / 发送请求/ 处理返回信息函数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processResponsePsw (); else /页面不正常 alert(出现异常,请重试!); /显示内容 function processResponsePsw() var res=XMLHttpReq.responseXML.getElementsByTagName(res); for(i=0;ires.length;i+) var datam = res0.firstChild.data; document.all.DoctorPassword.value=datam; Action中的方法public ActionForward findDefinePsw(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws Exception HospitalInfor hospitalInfor=dataManageService.findDefinePsw(1);String definePsw=hospitalInfor.getPassword();response.setContentType(text/xml; charset=UTF-8);response.setHeader(Cache-Control, no-cache);PrintWriter out = response.getWriter()