1.放入以下函数到conf/FunctionsExt.php
//修正多附件字段
function fixFile($data){
if($data){
$inputStr = $data;
$segments = explode('||', $inputStr);
$segments = array_filter($segments, function($item) {
return trim($item) !== '';
});
//提取标题和顺序
$pathToTitle = [];
$pathOrderMap = [];
$order = 1;
foreach ($segments as $segment) {
if (empty(trim($segment))) continue;
$parts = explode('|', $segment, 2);
if (count($parts) === 2) {
$path = trim($parts[0]);
$title = trim($parts[1]);
$pathToTitle[$path] = $title;
$pathOrderMap[$path] = $order++;
}
}
//获取url字符串
$quotedUrls = [];
foreach ($segments as $item) {
$parts = explode('|', $item, 2);
$url = trim($parts[0] ?? '');
if (!empty($url)) {
$quotedUrls[] = '"' . $url . '"';
}
}
$orders = 'addtime desc';
$sql = ' litpic in ('.implode(',',$quotedUrls).') ';
$fres = M('pictures')->findAll($sql,$orders);
foreach($fres as $k=>$v){
$url = $fres[$k]['litpic'];
$fres[$k]['title'] = $pathToTitle[$url];
$fres[$k]['orders'] = $pathOrderMap[$url];
}
usort($fres, function($a, $b) {
return $a['orders'] - $b['orders'];
});
return $fres;
}else{
return [];
}
}
2.前台HomeController.php在function jizhi_details($id){}中使用
//重构附件files字段
if(array_key_exists('files',$details)){
$this->files = fixFile($details['files']);
}
3.在前台Common控制器添加下载处理函数
function download() {
if($_POST){
$id = $this->frparam('fid',1,'POST');
$file_name =$this->frparam('file_name',1,'POST');
if(!$id||!$file_name){
http_response_code(405);
//echo "错误：参数缺失";
exit;
}
if (!preg_match('/^[\w\x{4e00}-\x{9fa5}\-]+$/u', $file_name)) {
http_response_code(405);
//echo "错误：文件名包含非法字符";
exit;
}
$fres = M('pictures')->find(['id'=> $id]);
if($fres){
$file_url = $fres['litpic'];
$now =date('Ymd_His', time());
$download_name = $file_name.$now. '.' . $fres['filetype'];
if (file_exists(APP_PATH.$file_url) && is_file(APP_PATH.$file_url)) {
$fileSize = filesize(APP_PATH.$file_url);
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . basename($download_name) . '"');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . $fileSize);
readfile(APP_PATH.$file_url);
exit;
}else{
http_response_code(404);
//echo "错误：文件不存在。";
exit;
}
}else{
http_response_code(404);
//echo "错误：文件不存在。";
exit;
}
}else{
http_response_code(405);
exit;
}
}
4.前端详情页模板使用
{foreach $rjfile as $v}
<li>
{$v['id']}
{$v['title']}
{$v['filetype']}
{$v['size']}
{fun date('Y-m-d',$v['addtime'])}
<a href="javascript:;" class="downf" fid="{$v['id']}" fname="{$v['title']}">下载</a>
</li>
{/foreach}
5.结合js实现文件下载
<script type="text/javascript">
function download(id,filename){
$('body').append(`<form method="post" target="_blank" action="/common/download.html" id="downloadForm"><input type="hidden" name="fid" value="${id}" required><input type="hidden" name="file_name" value="${filename}" required></form>`);
setTimeout(function(){
$("#downloadForm").submit();
setTimeout(function(){
$("#downloadForm").remove()
},1000)
},500)
}
$(function(){
$(".downf").each(function(){
$(this).click(function(){
var fid = $(this).attr("fid");
var fname = $(this).attr("fname");
download(fid,fname)
})
})
})
</script>