导出execl

// 导出EXCEL
function exportExcel() {
// 判断是否通过客户端验证
if ((!startTimeField.validate() || !endTimeField.validate())) {
Ext.Msg.alert("提示", "输入的日期不符合要求：详细情况请查看红线提示！");
return;
}
var startTime;
var endTime;
// 按指定时间查询
if (state == 0) {
// 获得开始和结束时间 [需要进行格式化]
startTime = startTimeField.formatDate(startTimeField.getValue());
endTime = endTimeField.formatDate(endTimeField.getValue());
}
// 按固定日期查询
if (state == 1) {
var comboxTime = document.getElementById("timeArea").value;
startTime = comboxTime.split("$")[0];
endTime = comboxTime.split("$")[1];
}

// 获得排序信息
var sortInfo = grid.getStore().sortInfo;

// 获得列对象
var cm = grid.getColumnModel();
var header = new Array();
var headerDataKey = new Array();
for ( var i = 0; i < cm.config.length; i++) {
var item = cm.config[i];
if (!item.hidden && item.dataIndex) {
header.push(item.header);
headerDataKey.push(item.dataIndex);
}
}

var form = document.getElementById("project_export_form");
if (document.getElementById("project_hidden_iframeId") == null) {
var iframe = document
.createElement("<iframe name='project_hidden_iframeId' id='project_hidden_iframeId' style='width:0px;height:0px;'></iframe>");
document.appendChild(iframe);
}
if (form == null) {
form = document
.createElement("<form id='project_export_form' method='post'target='project_hidden_iframeId'></form>");
document.appendChild(form);
}
// 添加节点提交数据 (表头和类型信息)
form.innerHTML = "<input type='text' style='display:none;' name='header' id='header' value='"
+ header.join(",")
+ "'/>";

var params = "?menuId="+menuId+ "&headerDataKey="
+ headerDataKey.join(",") + "&startTime=" + startTime
+ "&endTime=" + endTime;
form.action = "CreateProjectVessionScoreExcel.action" + params;
form.submit();
}