//前端html部分
<html lang="en">
<head>
<meta charset="UTF-8">
<title>單圖片上傳</title>
//引入js
<script src="xxxxxx/js/jquery1.42.min.js"></script>
</head>
<body>
<img onclick=" $('#weblogo_file').click();" id="img1" src="/uploads/tupian/0.png"/>
<iframe name="ifr" frameborder="0"></iframe>
<form style="display: none" target="ifr" action="/index.php/index/index/upload" method="post" enctype="multipart/form-data">
<input type="text"name="id" value="5"><br/>
<input id="weblogo_file" type="file" onchange=" $('#weblogo_submit').click();" name="pic"><br/>
<input id="weblogo_submit" type="submit" value="上傳">
</form>
</body>
</html>
//渲染頁面
function uploadtest(){
return $this->fetch();
}
//上傳顯示方法
function upload(){
$res = request()->param();
$id = $res['id'];
$file = request()->file('pic');
$pic = $id.'.png';
$file->move(ROOT_PATH . 'public' . DS . 'uploads/tupian',$pic);
echo '<script>
window.parent.document.getElementById(\'img1\').src = "/uploads/tupian/'.$pic.'?" + Math.random()
</script>';
exit;
}