废话不多说，先上效果图：
点击导出，实现
点击导出
统计完成之后
点击确定
下面来谈谈实现的思路：
前面导出操作简单，从第二个导出操作开始：
点击"确定"调用exportCsv函数
代码如下:
复制
导出
exportCvs函数如下
function exportCsv()
{
//清除等待的转动圈
$(#loading).html();
//弹出统计总数对话框，函数在后面给出定义
tip();
//ajax请求总数
$.post("/index.php?q=onlinesea/getwherecount" search_uri, function(json){
var return_arr = eval(( json ));
var num = return_arr[total];
var processnum = return_arr[processnum];
if(num == 0){
poptip.title(系统消息);
poptip.content(查询结果为空，不能进行数据导出);
}
else
{
poptip.close();
for (var i in return_arr[cntarr]){
if (return_arr[cntarr][i] != 0){
count_arr[i] = return_arr[cntarr][i];
}
}
var ii=0;
for (var i in count_arr){
type_arr[ii]=i;
ii ;
}
//当数据不为空的时候弹出是否到处框
exportCsvConfirm(num, processnum);
}
});
}
//弹出确认下载 exportCsvConfirm函数
function exportCsvConfirm(num, processnum)
{
var msg = 需要导出的数据有 num 行，可能会占用您较多时间来进行导出。
您还需要继续吗？;
// 提示是否继续
$.dialog.confirm(msg, function () {
$(#loading).html();
processed_count = 0;
index = 1;
win.$(#process_bg).hide().width(0%).show();
win.$(#process_num).html(0);
$.dialog.through({
title: 数据导出进度,
content: win.document.getElementById(processbar),
lock: true,
opacity: .1
},
function(){
window.location.reload();
});
//当继续的时候
win.$(#progress_info).show().text(正在导出数据，请耐心等待，请勿关闭窗口...);
//开始执行导出操作
excel_export2(num, processnum);
});
}
关键函数excel_export2队列请求，首先会在前面定义全局变量
代码如下:
复制var search_uri ="";varevent="";var processed_count =0;// 已处理的数据条数var index =1;var iii =0;var ajaxmark =1;var win = $.dialog.parent;// 顶层页面window对象var count_arr =newArray(tables);?>);var type_arr =newArray();
我们要定义全局变量 index 和iii ，ajaxmark ,index主要用于对一个表数据太多的时候进行分批导出 ，iii用来控制队列循环，ajaxmark用来判断前一个请求是否执行成功了，成功的话在执行下面的请求
代码如下:
复制function excel_export2(num, processnum){//获取tabletype
tabletype=type_arr[iii];//获取总数
num = count_arr[tabletype];//判断是否数组是否执行完毕if(typeof(tabletype)==undefined&&typeof(num)==undefined){returnfalse;}//判断是否有上一个ajax请求是否完成if(ajaxmark==1){
index =1;//将ajax请求标记为未执行完成
ajaxmark=2;//执行ajax请求，函数在后面给出
retrun_var = excel_export_ajax(index, num, processnum, tabletype);//判断函数返回if(typeof(retrun_var)==undefined){//将iii自增，执行下一个数组数据
iii ;//递归调用自己
excel_export2(num, processnum);if(iii>100){returnfalse;}//当ajax返回成功的时候，返回。}elseif(retrun_var==success){returnfalse;}returnfalse;}else{//setTimeout(excel_export2(num, processnum),3000);//setInterval(_excel_export2(num, processnum),3000);//每隔3秒检查是否ajax请求结束，这里settimeout 不能传递参数，只能通过_excel_export2这种形式
setTimeout(_excel_export2(num, processnum),3000);}}function _excel_export2(num, processnum){returnfunction(){
excel_export2(num, processnum);}}//excel_export_ajax函数 执行导出/* AJAX，递归调用 */function excel_export_ajax(index, num, processnum, tabletype){
$.ajax({
url:"/index.php?q=onlinesea/exportcsv" search_uri "/index/" index "/total/" num /tabletype/ tabletype,
type:GET,
success:function(data){//执行次数自增
processed_count;//当一个表数据太多，分批导出
index;// 更新进度条//判断进度var process_num = parseInt((processed_count / processnum)*100);if(process_num >=100){
process_num =100;}//跟新进度条
update_process(process_num);//alert(processed_count -- processnum);//当执行结束if(processed_count >= processnum){//压缩文件
backup_compress();returnsuccess;}if(data ==0){//将ajax请求标记为执行完毕，执行下一个url请求
ajaxmark=1;returnfalse;}当一个表的数据未导出完成的时候，会循环调用自己去请求， php函数或判断是否到处完成，导出完成返回0，未完成返回1
excel_export_ajax(index, num, processnum, tabletype);}});}/* 备份文件执行压缩 */function backup_compress(){
win.$(#progress_info).text(正在生成压缩文件...);
$.ajax({
url:"/index.php?q=onlinesea/compress/event/",
success:function(msg){
win.$(#process_bg).show().width(100%);
win.$(#process_num).html(100);
win.$(#progress_info).html(导出数据完成。 下载文件);}});}/* 更新进度条 */function update_process(process_num){
win.$(#process_bg).show().width(process_num %);
win.$(#process_num).html(process_num);}
下面附上源码，咳咳相关php程序大家自己脑补下吧
代码如下:
复制var search_uri ="";var event ="";var processed_count =0;// 已处理的数据条数var index =1;var iii =0;var ajaxmark =1;var win = $.dialog.parent;// 顶层页面window对象var count_arr =newArray(tables);?>);var type_arr =newArray();function exportCsv(){
$(#loading).html();
tip();
$.post("/index.php?q=onlinesea/getwherecount" search_uri,function(json){var return_arr =eval(( json ));var num = return_arr[total];var processnum = return_arr[processnum];if(num ==0){
poptip.title(系统消息);
poptip.content(查询结果为空，不能进行数据导出);}else{
poptip.close();for(var i in return_arr[cntarr]){if(return_arr[cntarr][i]!=0){
count_arr[i]= return_arr[cntarr][i];}}var ii=0;for(var i in count_arr){
type_arr[ii]=i;
ii ;}
exportCsvConfirm(num, processnum);}});}function exportCsvConfirm(num, processnum){var msg =需要导出的数据有 num 行，可能会占用您较多时间来进行导出。
您还需要继续吗？;
$.dialog.confirm(msg,function(){
$(#loading).html();
processed_count =0;
index =1;
win.$(#process_bg).hide().width(0%).show();
win.$(#process_num).html(0);
$.dialog.through({
title:数据导出进度,
content: win.document.getElementById(processbar),
lock:true,
opacity:.1},function(){
window.location.reload();});
win.$(#progress_info).show().text(正在导出数据，请耐心等待，请勿关闭窗口...);
excel_export2(num, processnum);});}function excel_export2(num, processnum){
tabletype=type_arr[iii];
num = count_arr[tabletype];if(typeof(tabletype)==undefined&&typeof(num)==undefined){returnfalse;}if(ajaxmark==1){
index =1;
ajaxmark=2;
retrun_var = excel_export_ajax(index, num, processnum, tabletype);if(typeof(retrun_var)==undefined){
iii ;
excel_export2(num, processnum);if(iii>100){returnfalse;}}elseif(retrun_var==success){returnfalse;}returnfalse;}else{//setTimeout(excel_export2(num, processnum),3000);//setInterval(_excel_export2(num, processnum),3000);
setTimeout(_excel_export2(num, processnum),3000);}}function _excel_export2(num, processnum){returnfunction(){
excel_export2(num, processnum);}}/* 执行导出 */function excel_export(num, processnum){var retrun_var =ss;for(var i in count_arr){
num = count_arr[i];
tabletype = i;
index =1;
retrun_var = excel_export_ajax(index, num, processnum, tabletype);if(typeof(retrun_var)==undefined){//alert(xxxx);
setTimeout(function(){exit;},5000);}if(retrun_var ==success){returnfalse;}}returnfalse;}/* AJAX，递归调用 */function excel_export_ajax(index, num, processnum, tabletype){
$.ajax({
url:"/index.php?q=onlinesea/exportcsv" search_uri "/index/" index "/total/" num /tabletype/ tabletype,
type:GET,
success:function(data){
processed_count;
index;// 更新进度条var process_num = parseInt((processed_count / processnum)*100);if(process_num >=100){
process_num =100;}
update_process(process_num);//alert(processed_count -- processnum);if(processed_count >= processnum){
backup_compress();returnsuccess;}if(data ==0){
ajaxmark=1;returnfalse;}
excel_export_ajax(index, num, processnum, tabletype);}});}/* 更新进度条 */function update_process(process_num){
win.$(#process_bg).show().width(process_num %);
win.$(#process_num).html(process_num);}/* 备份文件执行压缩 */function backup_compress(){
win.$(#progress_info).text(正在生成压缩文件...);
$.ajax({
url:"/index.php?q=onlinesea/compress/event/",
success:function(msg){
win.$(#process_bg).show().width(100%);
win.$(#process_num).html(100);
win.$(#progress_info).html(导出数据完成。 下载文件);}});}function tip(){
poptip = $.dialog.through({
id:tip,
title:系统消息,
content:正在统计总数，请勿关闭窗口 
,
width:300,
height:100,
icon:system,
lock:true,
opacity:.1},function(){
window.location.reload();});
poptip.show();}function packetDelete(url,msg){
$.dialog.confirm(msg,function(){
$.post(url,function(data){if(data ==1){
$.dialog(删除成功,function(){window.location.reload();});}elseif(data ==2){
$.dialog(删除失败,function(){window.location.reload();});}elseif(data ==3){
$.dialog(文件不存在，或者已删除,function(){window.location.reload();});}});});}
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