用Yii,Mysql下载longblob文件(adobe Illustrator或png)
问题描述:
I am trying to download ai/png from mysql DB but all I get is an empty file. On the table I only have id and two longblob (file_ai, file_png). For example, file adobe illustrator view is:
echo CHtml::link('<span class="glyphicon glyphicon glyphicon-download-alt" aria-hidden="true"></span>',
array('User/downloadFile', 'id' => $file->id, 'ext' => 'application/illustrator'),
$htmlOptions = array('class' => 'toolMes', 'download', 'data-toggle' => 'tooltip', 'data-placement' => 'bottom', 'title' => 'Download Ai'));
In the controller:
public function actionDownloadFile($id, $ext) {
$file = Files::model()->findByPk($id);
if ($ext === 'application/illustrator') {
header("Content-length:" . strlen($file->file_ai));
header("Content-type: " . $ext . "");
header('Content-Disposition: attachment; filename="' . $file->id . '_' . date("Y-m-d") . '.ai"');
} else {
header("Content-length:" . strlen($file->file_png));
header("Content-type: image/png");
header('Content-Disposition: attachment; filename="' . $file->id . '_' . date("Y-m-d") . '"');
}
}
Hope it is enough to have your precious suggestions
我正在尝试从mysql数据库下载ai / png,但我得到的只是一个空文件。 在表中 我只有id和两个longblob(file_ai,file_png)。 例如,文件adobe illustrator视图是: p>
echo CHtml :: link('&lt; span class =“ glyphicon glyphicon glyphicon-download-alt“aria-hidden =”true“&gt;&lt; / span&gt;',
array('User / downloadFile','id'=&gt; $ file-&gt; id,'ext'= &gt;'application / illustrator'),
$ htmlOptions = array('class'=&gt;'toolMes','download','data-toggle'=&gt;'tooltip','data-placement'=&gt; 'bottom','title'=&gt;'下载Ai'));
code> pre>
在控制器中: p>
public function actionDownloadFile($ id,$ ext){
$ file = Files :: model() - &gt; findByPk($ id);
if($ ext ==='application / illustrator'){\ n header(“Content-length:”。strlen($ file-&gt; file_ai));
header(“Content-type:”。$ ext。“”);
header('Content-Disposition:attachme NT; filename =“'。$ file-&gt; id。'_'。date(”Ymd“)。'。'”');
} else {
header(“Content-length:”。strlen($ file - &gt; file_png));
标题(“Content-type:image / png”);
标题('Content-Disposition:attachment; filename =“'。$ file-&gt; id。'_'。date (“Ymd”)。''');
}
}
code> pre>
希望能够得到您宝贵的建议 p>
答
Your not echoing out the actual file contents!
If you are storing images in your database you need to do the echo after you throw the headers...
echo $file->file_ai;