这篇文章将为大家详细讲解有关用vue如何实现图片上传到后台，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="jquery-1.11.3.min.js"></script>
<style>
.upload {
margin: 30px 40px 0;
width: 122px;
height: 122px;
padding-bottom: 40px;
position: relative;
float: left;
}
.upload .btn {
position: absolute;
left: 20px;
bottom: 0;
width: 80px;
height: 30px;
line-height: 30px;
text-align: center;
color: #Fff;
border-radius: 5px;
background: #ff6c00;
}
.upload .btn .file {
display: inline-block;
position: absolute;
width: 80px;
height: 30px;
left: 0;
top: 0;
opacity: 0;
}
.upload .btn .add{
position: absolute;
left: 0;
top: 0;
width: 80px;
height: 30px;
text-align: center;
}
.upload .imgs {
position: absolute;
left: 0;
top: 0;
width: 100px;
height: 100px;
border: 1px solid #ccc;
padding: 10px;
}
.upload .imgs img {
width: 100px;
height: 100px;
border: 1px solid #f1f1f1;
}
.upload .imgs .look {
position: absolute;
left: 10px;
top: 10px;
width: 100px;
height: 100px;
line-height: 100px;
text-align: center;
background: rgba(0, 0, 0, 0.3);
color: #fff;
}
</style>
</head>
<body>
<!-- 模态框 -->
<div class="madel-img"></div>
<div class="upload_wrap clearfix">
<div class="upload upload1 fl">
<div class="btn">
<span class="add">上传文件</span>
<input type="file" class="file" multiple>
<input type="hidden" class="imgUrl">
</div>
<div class="imgs">
<img src="shenfenzheng.jpg" alt="">
<div class="look">图片示范</div>
</div>
</div>
</div>
<script>
;(function($){
/* 上传图片 */
$.fn.upload = function(id){
this.id = id;
this.img = this.id.find($(".imgs img"));
this.img_src = this.id.find($(".imgs img")).attr("src");
this.file = this.id.find($(".file"));
this.look = this.id.find($(".look"));
this.imgUrl = this.id.find($(".imgUrl"));
var that = this;
this.file.on("change",function(){
var files = this.files;//获得上传的所有图片
var reader = new FileReader();//读取本地图片并显示
var name = files[0].name;
var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();
if(fileName !="jpg" && fileName !="jpeg" && fileName !="png" && fileName !="bmp"){
layer.msg("图片格式不正确！");
that.img.attr("src",that.img_src)
return;
}
var fileSize = files[0].size;
var size = fileSize / 1024;
if(size>10000){
layer.msg("图片不能大于10M");
return;
}else if(size <= 0){
layer.msg("图片不能小于0M");
return;
}
reader.readAsDataURL(files[0]);//读取第一张图片的地址
//数据读取完成后改变src地址
reader.onload = function(){
that.look.css({"display":"none"});
var image = new Image();//本地缓存一张图片
var imgCur_src = this.result;//获取正在上传的图片
that.img.attr("src",imgCur_src);//吧刚开始的图片替换成上传的图片
}
var fd = new FormData();
fd.append("pic", files[0]);
$.ajax({
type: "POST",
contentType: false, //必须false才会避开jQuery对 formdata 的默认处理 , XMLHttpRequest会对 formdata 进行正确的处理
processData: false, //必须false才会自动加上正确的Content-Type
url: uploadUrl,
data: fd,
async: false,
beforeSend: function (request) {
request.setRequestHeader("Authorization", localStorage.token);
request.setRequestHeader("X-Requested-With", "XMLHttpRequest");
},
success: function (msg) {
console.log(msg)
if (msg.code == "100") {
imgUrl.val(msg.data);
}
},
error: function (msg) {
console.log(msg);
}
});
})
}
$(".upload1").upload($(".upload1"));
})(jQuery)
</script>
</body>
</html>关于用vue如何实现图片上传到后台就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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