public function read()
{
try {
// 验证参数的合法性
$aid = I('get.id');
$options = array();
$options['download'] = I('get.download');
if (!$aid || !is_numeric($aid)) {
throw new \Exception(L('_ERR_ATID_'));
}
$attService = D('Attachment', 'Service');
if (!$attService->read($aid, $options)) {
return false;
}
$resp = \Component\Common\Response::get_instance();
return $resp->stop();
} catch (\Exception $e) {
$errInfo = $e->getMessage();
return save_app_log($errInfo, 'component');
// return get_api_result ('component', array (), $errInfo);
}
}
/**
* 读取文件
*
* @param int $atid
* @param array $options
*
* @return bool
* */
public function read($atid, $options)
{
// 查看附件是否存在
$attModel = D('Attachment');
$aid = intval($atid);
$attInfo = $attModel->where('atid=%d', $aid)->find();
if (!$attInfo) {
throw new \Exception(L('_ERR_ATT_NOT_EXITS_', array('id' => $aid)));
}
// 显示文件了
// 获取文件路径
$uploadDir = rtrim(C('upload.rootPath'), '/') . '/';
$savePath = trim($attInfo['atpath'], '/') . '/';
$saveName = $attInfo['atname'];
$filePath = $uploadDir . $savePath . $saveName;
$relPath = realpath($filePath);
// 验证文件是否存在
if (!file_exists($relPath)) {
throw new \Exception(L('_ERR_ATT_FILE_NOT_EXITS_'));
}
// 最后修改时间
$filemtime = filemtime($relPath);
$resp = \Component\Common\Response::get_instance();
$resp->set_raw_header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $filemtime) . ' GMT');
// 尝试发送 304响应强制浏览器使用缓存
if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) && ($HTTP_IF_MODIFIED_SINCE = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $filemtime)) {
$resp->set_raw_header('Etag: ');
$resp->set_raw_header("HTTP/1.1 304 Not Modified");
$resp->send_headers();
return true;
}
// 附件文件的 mime 类型字符串
$mime = $attInfo['atmine'];
// 清除输出缓冲
@ob_end_clean();
// 处理名称里的符号，避免chrome无法解析问题
$attInfo['atname'] = str_replace(array('&', '=', ','), '_', $attInfo['atname']);
if (!$options['download']) {
$resp->set_raw_header('Content-Disposition: inline; filename=' . $attInfo['atname']);
$resp->set_raw_header('Content-Type: ' . $mime);
} else {
$resp->set_raw_header('Content-Disposition: attachment; filename=' . $attInfo['atname']);
$resp->set_raw_header('Content-Type: ' . $mime);
}
if (!is_file($relPath)) {
return true;
}
// 发送浏览器头
$resp->set_raw_header("Content-Length: " . filesize($relPath));
$resp->send_headers();
$fp = fopen($filePath, 'rb');
if ($fp) {
fseek($fp, 0);
if (function_exists('fpassthru')) {
fpassthru($fp);
} else {
echo @fread($fp, filesize($relPath));
}
}
fclose($fp);
flush();
ob_flush();
return true;
}