layui 分片上传PHP后端
layui 分片上传PHP后端
upload.js
layui.define("layer", function(e) {
"use strict";
var t = layui.$,
i = layui.layer,
n = layui.hint(),
o = layui.device(),
a = {
config: {},
set: function(e) {
var i = this;
return i.config = t.extend({}, i.config, e), i
},
on: function(e, t) {
return layui.onevent.call(this, r, e, t)
}
},
l = function() {
var e = this;
return {
upload: function(t) {
e.upload.call(e, t)
},
reload: function(t) {
e.reload.call(e, t)
},
config: e.config
}
},
r = "upload",
u = "layui-upload-file",
c = "layui-upload-form",
f = "layui-upload-iframe",
s = "layui-upload-choose",
p = function(e) {
var i = this;
i.config = t.extend({}, i.config, a.config, e), i.render()
};
p.prototype.config = {
accept: "images",
exts: "",
auto: !0,
bindAction: "",
url: "",
field: "file",
acceptMime: "",
method: "post",
data: {},
drag: !0,
size: 0,
number: 0,
multiple: !1
}, p.prototype.render = function(e) {
var i = this,
e = i.config;
e.elem = t(e.elem), e.bindAction = t(e.bindAction), i.file(), i.events()
}, p.prototype.file = function() {
var e = this,
i = e.config,
n = e.elemFile = t(['<input class="' + u + '" type="file" accept="' + i.acceptMime + '" name="' + i.field + '"', i.multiple ? " multiple" : "", ">"].join("")),
a = i.elem.next();
(a.hasClass(u) || a.hasClass(c)) && a.remove(), o.ie && o.ie < 10 && i.elem.wrap('<div class="layui-upload-wrap"></div>'), e.isFile() ? (e.elemFile = i.elem, i.field = i.elem[0].name) : i.elem.after(n), o.ie && o.ie < 10 && e.initIE()
}, p.prototype.initIE = function() {
var e = this,
i = e.config,
n = t('<iframe id="' + f + '" class="' + f + '" name="' + f + '" frameborder="0"></iframe>'),
o = t(['<form target="' + f + '" class="' + c + '" method="post" key="set-mine" enctype="multipart/form-data" action="' + i.url + '">', "</form>"].join(""));
t("#" + f)[0] || t("body").append(n), i.elem.next().hasClass(c) || (e.elemFile.wrap(o), i.elem.next("." + c).append(function() {
var e = [];
return layui.each(i.data, function(t, i) {
i = "function" == typeof i ? i() : i, e.push('<input type="hidden" name="' + t + '" value="' + i + '">')
}), e.join("")
}()))
}, p.prototype.msg = function(e) {
return i.msg(e, {
icon: 2,
shift: 6
})
}, p.prototype.isFile = function() {
var e = this.config.elem[0];
if (e) return "input" === e.tagName.toLocaleLowerCase() && "file" === e.type
}, p.prototype.preview = function(e) {
var t = this;
window.FileReader && layui.each(t.chooseFiles, function(t, i) {
var n = new FileReader;
n.readAsDataURL(i), n.onload = function() {
e && e(t, i, this.result)
}
})
}, p.prototype.upload = function(e, i) {
var n, a = this,
l = a.config,
r = a.elemFile[0],
u = function() {
var i = 0,
n = 0,
o = e || a.files || a.chooseFiles || r.files, //o
u = function() {
l.multiple && i + n === o.fileLength && "function" == typeof l.allDone && l.allDone({
total: a.fileLength,
successful: i,
aborted: n
})
};
layui.each(o,
function(e, o) {
var start = 0; //文件开始长度
var end; //文件结束长度
var index = 0; //第几个切片
var filesize = o.size; //文件大小
var filename = o.name; //文件名称
var bytesPerPiece = 1024 * 1024; // 每个文件切片大小定为1MB .
//计算文件切片总数
var totalPieces = Math.ceil(filesize / bytesPerPiece);
var timer = 0;
up();
function up(){
if(start < filesize) {
end = start + bytesPerPiece;
if(end > filesize) {
end = filesize;
}
var chunk = o.slice(start,end);//切割文件
var sliceIndex= o.name + index;
var r = new FormData;
r.append(l.field, chunk, filename);
r.append('totalPieces', totalPieces); //提交给后台PHP接收 切片总数 （之前在這里处理进度条，发现有问题）
r.append('index', index); //提交给后台PHP接收 切片第几个
layui.each(l.data,
function(e, i) {
r.append(e, i)
}),
t.ajax({
url: l.url,
type: l.method,
data: r,
contentType: !1,
processData: !1,
dataType: "json",
success: function(ii) {
start = end;
index++;
i++,
timer = setTimeout(function(){
up();
}, 1000);
d(e, ii),
u()
},
error: function() {
n++,
a.msg("请求上传接口出现异常！请重试。"),
m(e),
u()
}
})
}else{
clearTimeout(timer);
return;
}
}
})
},
c = function() {
var e = t("#" + f);
a.elemFile.parent().submit(), clearInterval(p.timer), p.timer = setInterval(function() {
var t, i = e.contents().find("body");
try {
t = i.text()
} catch (n) {
a.msg("获取上传后的响应信息出现异常"), clearInterval(p.timer), m()
}
t && (clearInterval(p.timer), i.html(""), d(0, t))
}, 30)
},
d = function(e, t) {
if (a.elemFile.next("." + s).remove(), r.value = "", "object" != typeof t) try {
t = JSON.parse(t)
} catch (i) {
return t = {}, a.msg("请对上传接口返回有效JSON")
}
"function" == typeof l.done && l.done(t, e || 0, function(e) {
a.upload(e)
})
},
m = function(e) {
l.auto && (r.value = ""), "function" == typeof l.error && l.error(e || 0, function(e) {
a.upload(e)
})
},
h = l.exts,
v = function() {
var t = [];
return layui.each(e || a.chooseFiles, function(e, i) {
t.push(i.name)
}), t
}(),
g = {
preview: function(e) {
a.preview(e)
},
upload: function(e, t) {
var i = {};
i[e] = t, a.upload(i)
},
pushFile: function() {
return a.files = a.files || {}, layui.each(a.chooseFiles, function(e, t) {
a.files[e] = t
}), a.files
},
resetFile: function(e, t, i) {
var n = new File([t], i);
a.files = a.files || {}, a.files[e] = n
}
},
y = function() {
if ("choose" !== i && !l.auto || (l.choose && l.choose(g), "choose" !== i)) return l.before && l.before(g), o.ie ? o.ie > 9 ? u() : c() : void u()
};
if (v = 0 === v.length ? r.value.match(/[^\/\\]+\..+/g) || [] || "" : v, 0 !== v.length) {
switch (l.accept) {
case "file":
if (h && !RegExp("\\w\\.(" + h + ")$", "i").test(escape(v))) return a.msg("选择的文件中包含不支持的格式"), r.value = "";
break;
case "video":
if (!RegExp("\\w\\.(" + (h || "avi|mp4|wma|rmvb|rm|flash|3gp|flv") + ")$", "i").test(escape(v))) return a.msg("选择的视频中包含不支持的格式"), r.value = "";
break;
case "audio":
if (!RegExp("\\w\\.(" + (h || "mp3|wav|mid") + ")$", "i").test(escape(v))) return a.msg("选择的音频中包含不支持的格式"), r.value = "";
break;
default:
if (layui.each(v, function(e, t) {
RegExp("\\w\\.(" + (h || "jpg|png|gif|bmp|jpeg$") + ")", "i").test(escape(t)) || (n = !0)
}), n) return a.msg("选择的图片中包含不支持的格式"), r.value = ""
}
if (a.fileLength = function() {
var t = 0,
i = e || a.files || a.chooseFiles || r.files;
return layui.each(i, function() {
t++
}), t
}(), l.number && a.fileLength > l.number) return a.msg("同时最多只能上传的数量为：" + l.number);
if (l.size > 0 && !(o.ie && o.ie < 10)) {
var F;
if (layui.each(a.chooseFiles, function(e, t) {
if (t.size > 1024 * l.size) {
var i = l.size / 1024;
i = i >= 1 ? i.toFixed(2) + "MB" : l.size + "KB", r.value = "", F = i
}
}), F) return a.msg("文件不能超过" + F)
}
y()
}
}, p.prototype.reload = function(e) {
e = e || {}, delete e.elem, delete e.bindAction;
var i = this,
e = i.config = t.extend({}, i.config, a.config, e),
n = e.elem.next();
n.attr({
name: e.name,
accept: e.acceptMime,
multiple: e.multiple
})
}, p.prototype.events = function() {
var e = this,
i = e.config,
a = function(t) {
e.chooseFiles = {}, layui.each(t, function(t, i) {
var n = (new Date).getTime();
e.chooseFiles[n + "-" + t] = i
})
},
l = function(t, n) {
var o = e.elemFile,
a = t.length > 1 ? t.length + "个文件" : (t[0] || {}).name || o[0].value.match(/[^\/\\]+\..+/g) || [] || "";
o.next().hasClass(s) && o.next().remove(), e.upload(null, "choose"), e.isFile() || i.choose || o.after('<span class="layui-inline ' + s + '">' + a + "</span>")
};
i.elem.off("upload.start").on("upload.start", function() {
var o = t(this),
a = o.attr("lay-data");
if (a) try {
a = new Function("return " + a)(), e.config = t.extend({}, i, a)
} catch (l) {
n.error("Upload element property lay-data configuration item has a syntax error: " + a)
}
e.config.item = o, e.elemFile[0].click()
}), o.ie && o.ie < 10 || i.elem.off("upload.over").on("upload.over", function() {
var e = t(this);
e.attr("lay-over", "")
}).off("upload.leave").on("upload.leave", function() {
var e = t(this);
e.removeAttr("lay-over")
}).off("upload.drop").on("upload.drop", function(n, o) {
var r = t(this),
u = o.originalEvent.dataTransfer.files || [];
r.removeAttr("lay-over"), a(u), i.auto ? e.upload(u) : l(u)
}), e.elemFile.off("upload.change").on("upload.change", function() {
var t = this.files || [];
a(t), i.auto ? e.upload() : l(t)
}), i.bindAction.off("upload.action").on("upload.action", function() {
e.upload()
}), i.elem.data("haveEvents") || (e.elemFile.on("change", function() {
t(this).trigger("upload.change")
}), i.elem.on("click", function() {
e.isFile() || t(this).trigger("upload.start")
}), i.drag && i.elem.on("dragover", function(e) {
e.preventDefault(), t(this).trigger("upload.over")
}).on("dragleave", function(e) {
t(this).trigger("upload.leave")
}).on("drop", function(e) {
e.preventDefault(), t(this).trigger("upload.drop", e)
}), i.bindAction.on("click", function() {
t(this).trigger("upload.action")
}), i.elem.data("haveEvents", !0))
}, a.render = function(e) {
var t = new p(e);
return l.call(t)
}, e(r, a)
});
PHP 后端接收
/**
* 上传图片
*/
public function img()
{
$file = request()->file('file');
$fileName = $file ->getSaveName();
$fileExt = $file ->getExtension();
$uploaddir = 'uploads/' . date("Ymd") . '/';
if (!is_dir($uploaddir)) {
mkdir($uploaddir, 0777, true);
}
$status = 1;
//上传文件要保存的路径
$fname = sprintf($uploaddir . '%s.%s', md5($fileName), $fileExt);
// $fname = sprintf($path . '%s.%s', md5($file->getSaveName()), $file->getExtension());
$data = file_get_contents($_FILES['file']['tmp_name']);
if ($_POST['index'] == 1) {
file_put_contents($fname, $data);
} else {
//其余文件追加到文件末尾
file_put_contents($fname, $data, FILE_APPEND);
}
$res = ['status' => $status];
//最后一片文件
if ($_POST['totalPieces'] == ($_POST['index']+1)) {
$status = 2;
$newfilename = str_replace(md5($fileName), uniqid(), $fname);
rename($fname, $newfilename);
$res = ['status' => $status, 'url' => "/" . $newfilename];
}
//返回上传状态
return json_encode($res);
前端Html
<button type="button" class="layui-btn layui-btn-sm" id="upload_btn">上传图片</button>
<script>
//普通图片上传
var uploadInst_one = upload.render({
elem: '#upload_btn'
, url: "{:url('admin/Upload/img')}"
, size: 3096
, accept: 'images'
, done: function (res) {
//上传成功
if (res.code == 1) {
$('#upload_img').html('');
var str = '<div class="upload-img-close">';
str += '<img src="' + res.data.content + '" alt="' + res.data.name + '" title="' + res.data.name + '" class="layui-upload-img imgview">';
str += '<i class="layui-icon layui-icon-close-fill"></i>'
str += '</div>';
$('#upload_img').append(str);
$('input[name="img_name"]').val(res.data.name);
$('input[name="img_url"]').val(res.data.content);
$('input[name="img_size"]').val(res.data.size);
} else {
return layer.msg(res.msg);
}
}
});
</script>
你要保守你心，胜过保守一切。
本文来自博客园，作者：刘俊涛的博客，转载请注明原文链接：https://www.cnblogs.com/lovebing/p/15737072.html
