Posted in Javascript onApril 22, 2017
先看看效果图:
页面中js部分
var f1 = null; var picarr = new Array(); var basearr = new Array(); var lat = "", longt = ""; var files = []; // 上传文件 function upload() { var wt = plus.nativeUI.showWaiting(); var task = plus.uploader.createUpload(server + "?action=dynamicadd", { method: "POST" }, function(t, status) { //上传完成 if (status == 200) { // console.log("上传成功:" + t.responseText); mui.toast("发表成功"); //插入本地数据库 wt.close(); mui.back(); } else { console.log("上传失败:" + status); wt.close(); } } ); var title = $("#tbxtitle").val(); if (title.length < 1) { wt.close(); mui.toast("内容不能为空"); } else { task.addData("title", title); task.addData("uid", getUid()); task.addData("userid", plus.storage.getItem("policeid")); //task.addData("lat", lat.toString()); //task.addData("longt", longt.toString()); // console.log("准备上传"+files.length+"个图片"); for (var i = 0; i < files.length; i++) { var f = files[i]; // console.log("准备上传的图片路径:"+f.path); task.addFile(f.path, { key: f.name }); } task.start(); } } // 添加文件 var index = 1; var newUrlAfterCompress; function appendFile(p) { files.push({ name: "uploadkey" + index,//这个值服务器会用到,作为file的key path: p }); index++; } // 产生一个随机数 function getUid() { return Math.floor(Math.random() * 100000000 + 10000000).toString(); } function getposition() { plus.geolocation.getCurrentPosition(function(p) { var codns = p.coords; // 获取地理坐标信息; lat = codns.latitude; //获取到当前位置的纬度; longt = codns.longitude; //获取到当前位置的经度 }, function(e) { //alert("获取百度定位位置信息失败:" + e.message); }, { provider: 'baidu' }); } function galleryImgs() { // 从相册中选择图片 plus.gallery.pick(function(e) { $(".dynamic_images ul li").remove(".pickimg"); // console.log("选择了"+e.files.length+"个图片"); for (var i = 0; i < e.files.length; i++) { if (i < 9) { picarr[i] = e.files[i]; $(".dynamic_images ul").prepend("<li class='pickimg'><img src='" + e.files[i] + "' /></li>"); var dstname="_downloads/"+getUid()+".jpg";//设置压缩后图片的路径 newUrlAfterCompress=compressImage(e.files[i],dstname); appendFile(dstname); //console.log(e.files[i]); //console.log(dstname); } } }, function(e) { console.log("取消选择图片"); }, { filter: "image", multiple: true }); } //压缩图片,这个比较变态的方法,无法return function compressImage(src,dstname) { //var dstname="_downloads/"+getUid()+".jpg"; plus.zip.compressImage({ src: src, dst: dstname, overwrite:true, quality: 20 }, function(event) { //console.log("Compress success:"+event.target); return event.target; }, function(error) { console.log(error); return src; //alert("Compress error!"); }); } //旋转图片,本文没用到 function rotateImage() { plus.zip.compressImage({ src: "_www/a.jpg", dst: "_doc/a.jpg", rotate: 90 // 旋转90度 }, function() { alert("Compress success!"); }, function(error) { alert("Compress error!"); }); } function showActionSheet() { var bts = [{ title: "拍照" }, { title: "从相册选择" }]; plus.nativeUI.actionSheet({ cancel: "取消", buttons: bts }, function(e) { if (e.index == 1) { getImage(); } else if (e.index == 2) { galleryImgs(); } } ); } //拍照 function getImage() { var cmr = plus.camera.getCamera(); cmr.captureImage(function(p) { plus.io.resolveLocalFileSystemURL(p, function(entry) { var localurl = entry.toLocalURL(); // $(".dynamic_images ul li").remove(".pickimg"); $(".dynamic_images ul").prepend("<li class='pickimg'><img src='" + localurl + "' /></li>"); }); }); }
页面初始化的一些操作:
document.addEventListener("plusready", plusReady, false); function plusReady() { document.getElementById("addnew").addEventListener("tap", function() { showActionSheet();//拍照还是相册 }); document.getElementById("fabiao").addEventListener("tap", function() { upload();//上传文件 }); plus.nativeUI.closeWaiting(); }
html布局,比较简单,模仿微信的:
<div class="dynamic_images"> <ul> <!--<li><img src="images/cbd.jpg"></li>--> <li><img src="images/iconfont-tianjia.png" id="addnew"></li> <!--<li><span class="mui-icon iconfont icon-jia2" style="font-size: 28px;"></span></li>--> </ul> </div>
服务端asp.net版
string file = ""; int count = Request.Files.Count; for (int i = 0; i < count; i++) { int l = Request.Files["uploadkey" + (i + 1)].ContentLength; byte[] buffer = new byte[l]; Stream s = Request.Files["uploadkey" + (i + 1)].InputStream; System.Drawing.Bitmap image = new System.Drawing.Bitmap(s); string imgname = Common.GetGuid() + ".jpg"; string path = "Images/" + DateTime.Now.ToString("yyyyMMdd") + "/"; if (!Directory.Exists(HttpContext.Current.Server.MapPath(path))) { System.IO.Directory.CreateDirectory(HttpContext.Current.Server.MapPath(path)); } image.Save(Server.MapPath(path + "/" + imgname)); }
速度非常快,测试过,如果不压缩速度没有明显的下降,但是考虑到显示时候加载的问题,还是进行了压缩。
后补的CSS,其实没什么样式的:
<style type="text/css"> .dynamic_images { width: 100%; } .dynamic_images ul { margin: 0; padding: 0; } .dynamic_images ul li { float: left; list-style: none; width: 25%; } .dynamic_images ul li img { width: 98%; height: 80px; } </style>
加号是字体:http://iconfont.cn/
头部样式是二次修改HB的样式,如果你不是用HB开发的话,自己写CSS就行了。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持三水点靠木。
uploader秒传图片到服务器完整代码
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云上人间钦自赏声明:登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述。
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