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手机端WAP图片上传解决方案localResizeIMG先压缩后ajax无刷新上传

2018-01-29 16:46 621 查看

<a href="https://gitee.com/yinfanliang/chengyang.git ">git地址</a>

<!DOCTYPE html>

<html lang="zh-cn">

<head>

<meta charset="utf-8">

<meta http-equiv="X-UA-Compatible" content="IE=edge">

<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">

<title>多图片上传</title>

<script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>

<script src="./lrz.bundle.js"></script>

<style>

* {

margin: 0;

padding: 0;

}

/*图片上传*/



html,

body {

width: 100%;

height: 100%;

}



.container {

width: 100%;

height: 100%;

overflow: auto;

clear: both;

}



.z_photo {

width: 5rem;

height: 5rem;

padding: 0.3rem;

overflow: auto;

clear: both;

margin: 1rem auto;

border: 1px solid #555;

}



.z_photo img {

width: 1rem;

height: 1rem;

}



.z_addImg {

float: left;

margin-right: 0.2rem;

}



.z_file {

width: 1rem;

height: 1rem;

background: url(z_add.png) no-repeat;

background-size: 100% 100%;

float: left;

margin-right: 0.2rem;

}



.z_file input::-webkit-file-upload-button {

width: 1rem;

height: 1rem;

border: none;

position: absolute;

outline: 0;

opacity: 0;

}



.z_file input#file {

display: block;

width: auto;

border: 0;

vertical-align: middle;

}

/*遮罩层*/



.z_mask {

width: 100%;

height: 100%;

background: rgba(0, 0, 0, .5);

position: fixed;

top: 0;

left: 0;

z-index: 999;

display: none;

}



.z_alert {

width: 3rem;

height: 2rem;

border-radius: .2rem;

background: #fff;

font-size: .24rem;

text-align: center;

position: absolute;

left: 50%;

top: 50%;

margin-left: -1.5rem;

margin-top: -2rem;

}



.z_alert p:nth-child(1) {

line-height: 1.5rem;

}



.z_alert p:nth-child(2) span {

display: inline-block;

width: 49%;

height: .5rem;

line-height: .5rem;

float: left;

border-top: 1px solid #ddd;

}



.z_cancel {

border-right: 1px solid #ddd;

}

</style>

</head>

<body>

<div class="container">



<div class="z_photo">

<div class="z_file">

<input type="file" name="file" id="file" value="" accept="image/*" multiple onchange="imgChange('z_photo','z_file');" />

</div>

</div>



<div class="z_mask">



<div class="z_alert">

<p>确定要删除这张图片吗？</p>

<p>

<span class="z_cancel">取消</span>

<span class="z_sure">确定</span>

</p>

</div>

</div>

</div>

<script type="text/javascript">

//px转换为rem

(function(doc, win) {

var docEl = doc.documentElement,

resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',

recalc = function() {

var clientWidth = docEl.clientWidth;

if (!clientWidth) return;

if (clientWidth >= 640) {

docEl.style.fontSize = '100px';

} else {

docEl.style.fontSize = 100 * (clientWidth / 640) + 'px';

}

};

if (!doc.addEventListener) return;

win.addEventListener(resizeEvt, recalc, false);

doc.addEventListener('DOMContentLoaded', recalc, false);

})(document, window);

function imgChange(obj1, obj2) {

//获取点击的文本框

var file = document.getElementById("file");
/* 压缩图片 */
lrz(file.files[0], {
width: 300 //设置压缩参数
}).then(function (rst) {
/* 处理成功后执行 */
rst.formData.append('base64img', rst.base64); // 添加额外参数
$.ajax({
url: "http://localhost/upload/upload.php",
type: "POST",
data: rst.formData,
processData: false,
contentType: false,
success: function (data) {
$("<img />").attr("src", data).appendTo("body");
}
});
}).catch(function (err) {
/* 处理失败后执行 */
}).always(function () {
/* 必然执行 */
})

//存放图片的父级元素

var imgContainer = document.getElementsByClassName(obj1)[0];

//获取的图片文件

var fileList = file.files;

//文本框的父级元素

var input = document.getElementsByClassName(obj2)[0];

var imgArr = [];

//遍历获取到得图片文件

for (var i = 0; i < fileList.length; i++) {

var imgUrl = window.URL.createObjectURL(file.files[i]);

imgArr.push(imgUrl);

var img = document.createElement("img");

img.setAttribute("src", imgArr[i]);

var imgAdd = document.createElement("div");

imgAdd.setAttribute("class", "z_addImg");

imgAdd.appendChild(img);

imgContainer.appendChild(imgAdd);

};

imgRemove();

}; //结束

function imgRemove() {

var imgList = document.getElementsByClassName("z_addImg");

var mask = document.getElementsByClassName("z_mask")[0];

var cancel = document.getElementsByClassName("z_cancel")[0];

var sure = document.getElementsByClassName("z_sure")[0];

for (var j = 0; j < imgList.length; j++) {

imgList[j].index = j;

imgList[j].onclick = function() {

var t = this;

mask.style.display = "block";

cancel.onclick = function() {

mask.style.display = "none";

};

sure.onclick = function() {

mask.style.display = "none";

t.style.display = "none";

};

}

};

};

</script>

</body>

</html>

<?php

$base64_string = $_POST['base64_string'];

$savename = uniqid().'.jpeg';//localResizeIMG压缩后的图片都是jpeg格式

$savepath = 'images/'.$savename;

$image = base64_to_img( $base64_string, $savepath );

if($image){

echo '{"status":1,"content":"上传成功","url":"'.$image.'"}';

}else{

echo '{"status":0,"content":"上传失败"}';

}

function base64_to_img( $base64_string, $output_file ) {

$ifp = fopen( $output_file, "wb" );

fwrite( $ifp, base64_decode( $base64_string) );

fclose( $ifp );

return( $output_file );

}

$base64_image_content = $_POST['base64img'];

$output_directory = './image'; //设置图片存放路径

/* 检查并创建图片存放目录 */

if (!file_exists($output_directory)) {

mkdir($output_directory, 0777);

}

/* 根据base64编码获取图片类型 */

if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $base64_image_content, $result)) {

$image_type = $result[2]; //data:image/jpeg;base64,

$output_file = $output_directory . '/' . md5(time()) . '.' . $image_type;

}

/* 将base64编码转换为图片编码写入文件 */

$image_binary = base64_decode(str_replace($result[1], '', $base64_image_content));

if (file_put_contents($output_file, $image_binary)) {

echo $output_file; //写入成功输出图片路径

}

?>

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标签： ajax上传多张图片手机端

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