layui+croppers完成图片剪切上传

时间： 2023-07-18 admin 互联网

layui+croppers完成图片剪切上传推荐度：
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不多说直接上代码：

前台代码：

<!DOCTYPE html>
<html>
<head><meta charset="utf-8" /><title></title><link href="../layui/layui/css/layui.css" rel="stylesheet" /><link href="../layui/cropper/cropper.css" rel="stylesheet" />
</head>
<body><div class="layui-form-item"><label class="layui-form-label">头像</label><div class="layui-input-inline"><input type="text" name="head" lay-verify="required" id="inputimgurl" placeholder="图片地址" value="123.jpg" class="layui-input"></div><div class="layui-input-inline"><div class="layui-upload-list" style="margin:0"><img src="./微信图片_20190404185124.png" id="srcimgurl" class="layui-upload-img"></div></div><div class="layui-input-inline layui-btn-container" style="width: auto;"><button class="layui-btn layui-btn-primary" id="editimg">修改图片</button></div><div class="layui-form-mid layui-word-aux">头像的尺寸限定150x150px,大小在50kb以内</div></div><script src="../layui/layui/layui.js"></script><link href="../layui/cropper/cropper.css" rel="stylesheet" /><script src="../layui/cropper/croppers.js"></script><script>layui.config({base: '/layui/cropper/' //layui自定义layui组件目录
        }).use(['form', 'croppers'], function () {var $ = layui.jquery, form = layui.form, croppers = layui.croppers, layer = layui.layer;//创建一个头像上传组件
            croppers.render({elem: '#editimg', saveW: 150     //保存宽度
                , saveH: 150, mark: 1 / 1    //选取比例
                , area: '900px'  //弹窗宽度
                , url: "/home/UpLoadImg"  //图片上传接口返回和（layui 的upload 模块）返回的JOSN一样
                , done: function (url) { //上传完毕回调
                    $("#inputimgurl").val(url);$("#srcimgurl").attr('src', url);}});});</script>
</body>
</html>

后台代码：

        [HttpPost]public ActionResult UpLoadImg(){//HttpPostedFileBase file = Request.Files["upfile"];HttpPostedFileBase file = Request.Files["file"];var type = Request.Form["type"];var filename = string.Format("{0:yyyyMMddHHmmssfffffff}", DateTime.Now) + ".jpg";if (file != null){string path = HttpContext.Server.MapPath("/Images/Uploads");string filePath = Path.Combine(path, Path.GetFileName(filename));//根据需要创建文件夹
                CreateFolderIfNeeded(path);//将图片保存到IIS
                file.SaveAs(filePath);}return Json(new { code=0,data= filename });}

croppers.js代码：

/*!* Cropper v3.0.0*/layui.config({base: '/static/cropper/' //layui自定义layui组件目录
}).define(['jquery','layer','cropper'],function (exports) {var $ = layui.jquery,layer = layui.layer;var html = "<link rel=\"stylesheet\" href=\"/static/cropper/cropper.css\">\n" +"<div class=\"layui-fluid showImgEdit\" style=\"display: none\">\n" +"    <div class=\"layui-form-item\">\n" +"        <div class=\"layui-input-inline layui-btn-container\" style=\"width: auto;\">\n" +"            <label for=\"cropper_avatarImgUpload\" class=\"layui-btn layui-btn-primary\">\n" +"                <i class=\"layui-icon\">&#xe67c;</i>选择图片\n" +"            </label>\n" +"            <input class=\"layui-upload-file\" id=\"cropper_avatarImgUpload\" type=\"file\" value=\"选择图片\" name=\"file\">\n" +"        </div>\n" +"        <div class=\"layui-form-mid layui-word-aux\">头像的尺寸限定150x150px,大小在50kb以内</div>\n" +"    </div>\n" +"    <div class=\"layui-row layui-col-space15\">\n" +"        <div class=\"layui-col-xs9\">\n" +"            <div class=\"readyimg\" style=\"height:450px;background-color: rgb(247, 247, 247);\">\n" +"                <img src=\"\" >\n" +"            </div>\n" +"        </div>\n" +"        <div class=\"layui-col-xs3\">\n" +"            <div class=\"img-preview\" style=\"width:200px;height:200px;overflow:hidden\">\n" +"            </div>\n" +"        </div>\n" +"    </div>\n" +"    <div class=\"layui-row layui-col-space15\">\n" +"        <div class=\"layui-col-xs9\">\n" +"            <div class=\"layui-row\">\n" +"                <div class=\"layui-col-xs6\">\n" +"                    <button type=\"button\" class=\"layui-btn layui-icon layui-icon-left\" cropper-event=\"rotate\" data-option=\"-15\" title=\"Rotate -90 degrees\"> 向左旋转</button>\n" +"                    <button type=\"button\" class=\"layui-btn layui-icon layui-icon-right\" cropper-event=\"rotate\" data-option=\"15\" title=\"Rotate 90 degrees\"> 向右旋转</button>\n" +"                </div>\n" +"                <div class=\"layui-col-xs5\" style=\"text-align: right;\">\n" +"                    <button type=\"button\" class=\"layui-btn\" title=\"移动\"></button>\n" +"                    <button type=\"button\" class=\"layui-btn\" title=\"放大图片\"></button>\n" +"                    <button type=\"button\" class=\"layui-btn\" title=\"缩小图片\"></button>\n" +"                    <button type=\"button\" class=\"layui-btn layui-icon layui-icon-refresh\" cropper-event=\"reset\" title=\"重置图片\"></button>\n" +"                </div>\n" +"            </div>\n" +"        </div>\n" +"        <div class=\"layui-col-xs3\">\n" +"            <button class=\"layui-btn layui-btn-fluid\" cropper-event=\"confirmSave\" type=\"button\"> 保存修改</button>\n" +"        </div>\n" +"    </div>\n" +"\n" +"</div>";var obj = {render: function(e){$('body').append(html);var self = this,elem = e.elem,saveW = e.saveW,saveH = e.saveH,mark = e.mark,area = e.area,url = e.url,done = e.done;var content = $('.showImgEdit'),image = $(".showImgEdit .readyimg img"),preview = '.showImgEdit .img-preview',file = $(".showImgEdit input[name='file']"), options = {aspectRatio: mark,preview: preview,viewMode:1};$(elem).on('click',function () {layer.open({type: 1, content: content, area: area, success: function () {image.cropper(options);}, cancel: function (index) {layer.close(index);image.cropper('destroy');}});});$(".layui-btn").on('click',function () {var event = $(this).attr("cropper-event");//监听确认保存图像if(event === 'confirmSave'){image.cropper("getCroppedCanvas",{width: saveW,height: saveH}).toBlob(function(blob){var formData=new FormData();formData.append('file',blob,'head.jpg');$.ajax({method:"post",url: url, //用于文件上传的服务器端请求地址
                            data: formData,processData: false,contentType: false,success:function(result){if(result.code == 0){layer.msg(result.msg,{icon: 1});layer.closeAll('page');return done(result.data.src);}else if(result.code == -1){layer.alert(result.msg,{icon: 2});}}});});//监听旋转}else if(event === 'rotate'){var option = $(this).attr('data-option');image.cropper('rotate', option);//重设图片}else if(event === 'reset'){image.cropper('reset');}//文件选择
                file.change(function () {var r= new FileReader();var f=this.files[0];r.readAsDataURL(f);r.onload=function (e) {image.cropper('destroy').attr('src', this.result).cropper(options);};});});}};exports('croppers', obj);
});

View Code

cropper插件可以直接网上下载。

基本剪切上传图片功能完成，还需要修改样式和处理返回值的需要根据自己需要改动下代码。出处x-admin-》第三方插件-》截图

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