前台调用：js调用：
function downloadfile(id,name,price,curcount_pricelimit){ Date.prototype.Format = function(fmt) { //author: meizz var o = { "M+": this.getMonth() + 1, //月份 "d+": this.getDate(), //日 "h+": this.getHours(), //小时 "m+": this.getMinutes(), //分 "s+": this.getSeconds(), //秒 "q+": Math.floor((this.getMonth() + 3) / 3), //季度 "S": this.getMilliseconds() //毫秒 }; if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length)); for (var k in o) if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length))); return fmt; } var time = new Date().Format("yyyy-MM-dd-hh-mm-ss"); var fileName = name + "_" + time + ".txt"; //alert(fileName); window.open("downloadfile.php?fileName=" + fileName+"&id=" + id + "&name=" + name + "&price=" + price+"&curcount_pricelimit="+curcount_pricelimit); //进度条和下载文件,创建标志文件 //$.ajax("download.php?id=" + id + "&name=" + name + "&price=" + price + "&fileName=" + fileName); //生成文件 }
php 调用:
echo "<a style='color:blue' onclick="downloadfile(".$values['id'].",'".$values['name']."',".$values['lowest_price'].",".$values['curcount_pricelimit'].")" href='javascript:viod(0)' target=_blank>下载</a>";
下载文件：download.php
<?php //下载数据 header('Content-Type:text/html;charset=utf-8'); //$filePath="/minbao/data/amazon/data/"; $filePath = "d:/www/amazon/data/";//此处给出你下载的文件在服务器的什么地方 $crawlId=$_GET['id']; $price=$_GET['price'];//最低价格 $name=urldecode($_GET['name']); $name=iconv("utf-8","gb2312",$name);//解决乱码 $time=date("Y-m-d-H-i-s"); //导出sql语句：Select pid,price Into OutFile 'F:/QQPCmgr/Desktop/Data_OutFile.txt' fields terminated by ',' From `t_product` //导出文件命名格式Crawl_ID_txt; $fileName=$_GET['fileName']; //删除文件 if(file_exists($filePath.$fileName)){ unlink($filePath.$fileName); } include_once('./mysql.php'); $conndb=new ConnDB(); $str="crawl_id='".$crawlId."' and price>='".$price."' "; //查询配置好的关键词 $filterSqlStr=''; $sql="select filterword from t_crawl_configuration where id=".$crawlId; $request=$conndb->queryarr($sql); if($request){ if(strlen($request[0][0])>0) $filterSqlStr=" and name NOT REGEXP '".$request[0][0]."' "; }else{ echo "error"; exit; } $sql="select pid,price,name Into OutFile '".$filePath.$fileName."' fields terminated by ',' lines terminated by ' ' From `t_product` where ".$str.$filterSqlStr; //echo $sql; $request=$conndb->query($sql); if($request){ /*echo "<script> window.location.href='download.php?id=".$crawlId."&file=".$saveFile."';</script>";*/ }else{ echo "<script> alert('下载失败');</script>"; exit; } //删除临时文件 $tmpFiliName=$filePath."tmp".$fileName;//临时标志文件 echo $tmpFiliName; if(file_exists($tmpFiliName)){ unlink($tmpFiliName); } // 此处给出你下载的文件名 // $file = fopen($filePath.$fileName, "r"); //打开文件 // //输入文件标签 // header("Content-type:application/octet-stream "); // header("Accept-Ranges:bytes "); // header("Accept-Length: " . filesize($filePath.$fileName)); // header("Content-Disposition: attachment; filename= ".$fileName); // // //输出文件内容 // echo fread($file, filesize($filePath . $fileName)); // fclose($file); ?>
进度条：downloadfile.php
<?php header('Content-Type:text/html;charset=utf-8'); //$filePath="/minbao/data/amazon/data/"; $filePath="d:/www/amazon/data/"; $curcount_pricelimit = $_GET['curcount_pricelimit']; $fileName = $_GET['fileName']; $tmpFiliName=$filePath."tmp".$fileName;//临时标志文件 $crawlId=$_GET['id']; $price=$_GET['price'];//最低价格 $name=urldecode($_GET['name']); //防止执行超时 set_time_limit(0); //清空并关闭输出缓存 ob_end_clean(); //需要循环的数据 if ($curcount_pricelimit/10000>0){ $totalnumproduct=$curcount_pricelimit/10000; }else{ $totalnumproduct=10; } for($i = 0; $i < $totalnumproduct; $i++) { $users[] = $fileName.'_' . $i; } //计算数据的长度 $total = count($users); //显示的进度条长度，单位 px $width = 500; //每条记录的操作所占的进度条单位长度 $pix = $width / $total; //默认开始的进度条百分比 $progress = 0; ?> <html> <head> <title>下载提示</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script src="./js/jquery-1.8.3.min.js"></script> <style> body,div input { font-family: Tahoma; font-size: 9pt } </style> <script language="JavaScript"> <!-- function updateProgress(sMsg, iWidth,fsize) { //$("#downloaded").innerHTML=fsize+"KB"; //alert(fsize); document.getElementById("downloaded").innerHTML =fsize+"KB"; document.getElementById("status").innerHTML = sMsg; document.getElementById("progress").style.width = iWidth + "px"; document.getElementById("percent").innerHTML = parseInt(iWidth / <?php echo $width; ?> * 100) + "%"; } --> function setDownloaded(fsize) { fsize=fsize/1024; fsize=Math.round(fsize*100)/100; //alert(fsize); document.getElementById("downloaded").innerHTML =fsize+"KB"; } </script> </head> <body> <table border="1" width="300"> <tr> <td>已经生成</td> <td><div id="downloaded">0</div></td> </tr> </table> <div> <div style="margin:50px auto; padding: 8px; border: 1px solid gray; background: #EAEAEA; <?php echo $width+8; ?>px"> <div style="padding: 0; background-color: white; border: 1px solid navy; <?php echo $width; ?>px"> <div id="progress" style="padding: 0; background-color: #FFCC66; border: 0; 0px; text-align: center; height: 16px"></div> </div> <div id="status"></div> <div id="percent" style="position: relative; top: -30px; text-align: center; font-weight: bold; font-size: 8pt">0%</div> </div> <?php echo $tmpFiliName."<br />"; if(!file_exists($tmpFiliName)){ echo "创建文件<br />"; file_put_contents($tmpFiliName,'tmpContent') or die("Unable to open file!"); if(file_exists($tmpFiliName)){ echo "创建成功<br />"; $url="download.php?id=".$crawlId."&name=".$name."&price=".$price."&fileName=".$fileName; echo $url."<br />"; echo "<script>$.ajax('".$url."');</script>"; } }else{ echo "临时标志文件已经存在!"; } flush(); //将输出发送给客户端浏览器 $filesize=0; foreach($users as $user) { // 在此处使用空循环模拟较为耗时的操作，实际应用中需将其替换； // 如果你的操作不耗时，我想你就没必要使用这个脚本了 :) $cnt=0; if(file_exists($tmpFiliName)){ if(file_exists($filePath.$fileName)){ $file = fopen($filePath.$fileName, "rb"); if ($file) { $filesize=filesize($filePath.$fileName); clearstatcache(); // echo $cnt++."、文件大小:".($filesize/1024)."KB<br>"; echo "<script>setDownloaded($filesize);</script>";//在前台显示已经下载文件大小 } } }else{ if(file_exists($filePath.$fileName)){ $file = fopen($filePath.$fileName, "rb"); if ($file) { $filesize=filesize($filePath.$fileName); clearstatcache(); // echo $cnt++."、文件大小:".($filesize/1024)."KB<br>"; echo "<script>setDownloaded($filesize);</script>";//在前台显示已经下载文件大小 } } break; } //for($i=0;$i<1000000;$i++){ //} flush(); sleep(1); ?> <script language="JavaScript"> updateProgress("正在生成数据文件 <?php echo $user; ?> ....", <?php echo min($width, intval($progress)); ?>,<?php echo $filesize/1024;?>); </script> <?php flush(); //将输出发送给客户端浏览器，使其可以立即执行服务器端输出的 JavaScript 程序。 $progress += $pix; } //end foreach ?> <script language="JavaScript"> //最后将进度条设置成最大值 $width，同时显示操作完成 updateProgress("数据文件生成完成！3秒后启动下载...", <?php echo $width; ?>,<?php echo round($filesize/1024,2);?>); </script> <?php flush(); sleep(3); ?> <script language="JavaScript"> window.location.href ="downloadfinish.php?filePath=<?php echo $filePath; ?>&fileName=<?php echo $fileName; ?>"; </script> </script> <?php flush(); //删除临时文件 if(file_exists($tmpFiliName)){ unlink($tmpFiliName); } ?> </body> </html>
完成下载：downloadfinish.php
<?php $filePath=$_GET['filePath']; $fileName=$_GET['fileName']; //此处给出你下载的文件名 $file = fopen($filePath.$fileName, "r"); //打开文件 //输入文件标签 header("Content-type:application/octet-stream "); header("Accept-Ranges:bytes "); header("Accept-Length: " . filesize($filePath.$fileName)); header("Content-Disposition: attachment; filename= ".$fileName); //输出文件内容 echo fread($file, filesize($filePath . $fileName)); fclose($file); ?>