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php实现粘贴截图并完成上传功能

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Release: 2016-06-13 09:04:29
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php实现粘贴截图并完成上传功能

   今天发现segmentfault的评论留言里面可以粘贴上传图片,于是研究了下怎么实现的!

  原理很简单其实就是监控粘贴事件,然后检测是否粘贴的东西里面有图片,有的话直接触发ajax上传

  代码可以直接运行,有兴趣你们可以试试

  ?

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header("Access-Control-Allow-Origin:*");

$url = 'http://'.$_SERVER['HTTP_HOST'];

$file = (isset($_POST["file"])) ? $_POST["file"] : '';

if($file)

{

$data = base64_decode(str_replace('data:image/png;base64,', '', $file)); //截图得到的只能是png格式图片,所以只要处理png就行了

$name = md5(time()) . '.png'; // 这里把文件名做了md5处理

file_put_contents($name, $data);

echo"$url/$name";

die;

}

?>

 

 

 

<script></script>

//查找box元素,检测当粘贴时候,

document.querySelector('#box').addEventListener('paste', function(e) {

 

//判断是否是粘贴图片

if (e.clipboardData && e.clipboardData.items[0].type.indexOf('image') > -1)

{

var that = this,

reader = new FileReader();

file = e.clipboardData.items[0].getAsFile();

 

//ajax上传图片

reader.onload = function(e)

{

var xhr = new XMLHttpRequest(),

fd = new FormData();

 

xhr.open('POST', '', true);

xhr.onload = function ()

{

var img = new Image();

img.src = xhr.responseText;

 

// that.innerHTML = '';

document.getElementById("img_puth").value = img.src;

}

 

// this.result得到图片的base64 (可以用作即时显示)

fd.append('file', this.result);

that.innerHTML = '';

xhr.send(fd);

}

reader.readAsDataURL(file);

}

}, false);

  以上所述就是本文的全部内容了,希望大家能够喜欢。

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