前端上传组件Plupload使用---上传图片

上传图片到服务器

1.引入js插件：

<script type="text/javascript" src="{{ static_url('plupload/js/plupload.full.min.js') }}"></script>

2.html页面如图：

<label>广告海报：</label>
<a class="btn new_btn-w-m btn-primary" href="#" id="index_image" name="index_image">上传海报
   //给a标签加样式，上传时候显示进度条
   <span id="Progress2" style=" opacity: 0.6;z-index:10; position: absolute; bottom: 0; left: 0; height: 100%; width: 0%; display: block; background-color: #003399"></span>
</a>
<input type="text" name="image" id="image_url" style="display: none">
<span>支持jpg、jpeg、png、gif格式，大小不超过2M.建议尺寸：16X16</span>
<img id="sample" src="" style="margin-top: 10px;max-width: 400px;width: 100%;">
<p class="showInfo"></p>

3.js代码：

<script>
$(function (){
    var uploader_image = new plupload.Uploader({
        browse_button: 'index_image',
        url: "/ajax/upload_image?path=video_img",
    
        filters: {
            max_file_size : '4mb',//最大上传文件大小（格式100b, 10kb, 10mb, 1gb）
            prevent_duplicates : true,
            mime_types: [//允许文件上传类型
                {title: "files", extensions: "jpg,png,gif,jpeg"}
            ]
        },
        multipart_params: {
            '_xsrf': $("input[name='_xsrf']").val()
        },
        init:{
            FilesAdded:function(up, files) {
                plupload.each(files, function (file) {
                    uploader_image.start();
                });
            },
            UploadProgress: function(up, file) { //上传中，显示进度条
                $('#Progress2').css('width', file.percent+'%');
            },
            FileUploaded:function(up, file, info) {
                var base = '/static/media/video_img/';
                var response = $.parseJSON(info.response);
                if (response.status == 'ok') {
                    $("#sample").show().attr("src", base + response.name);
                    $("#image_url").val(response.name);
                }
                else {
                    alert(response.error);
                }
            },
            Error:function(up, errObject) {
                alert(errObject.code+errObject.message);
            },
        }
    });
    uploader_image.init();
});
</script>

附加：

<script>
$(function () {
    // editor.sync();
    var uploader = new plupload.Uploader({
        browse_button: 'index_image',
        url: "/ajax/upload_image?path=study_img",

        filters: {
          max_file_size : '4mb',
          prevent_duplicates : true,
        },
        multipart_params: {
            '_xsrf': $("input[name='_xsrf']").val()
        }
    });

    uploader.init();
//        console.log(uploader);

    // 文件添加后立即上传
    uploader.bind('FilesAdded', function (up, files) {
        plupload.each(files, function (file) {
            uploader.start();
        });
    });

    // 上传内容图片
    uploader.bind('FileUploaded', function (up, file, info) {
        var base = '/static/media/study_img/';
        var response = $.parseJSON(info.response);
        if (response.status == 'ok') {
            $("#poster").show().attr("src", base + response.name);
            $("#image_url").val(response.name);
        }
        else {
            alert(response.error);
        }
    });

    uploader.bind('UploadProgress',function(up,file){
        $('#Progress').css('width', file.percent+'%');
    });

    uploader.bind('Error', function (up, errObject) {
        alert(errObject.code+errObject.message);
    });
});
</script>

后端代码

1.url路由

(r"/ajax/upload_image", UploadImageFile),

2.python代码

class UploadImageFile(BaseHandler):
    def post(self):
        path = self.get_argument("path")
        input_name = self.get_argument("iname", "")
        # 得到图片的存储路径upload_path，就是图片文件在哪个文件夹下面
        upload_path = os.path.join(self.settings['upload_path'], path)

        # print path,upload_path
        # 若不存在此目录，则创建之
        if not os.path.isdir(upload_path):
            # upload_path = upload_path.replace("/", "\\") #windows platform
            os.makedirs(upload_path)
        file_metas = self.request.files.get('file', [])
        filename = ''
        try:
            for meta in file_metas:
                filename = meta['filename']
                ext = os.path.splitext(filename)[1]
                # 生成随机文件名
                filename = str(uuid.uuid4())
                filename = '%s%s' % (filename, ext)
                filepath = os.path.join(upload_path, filename)
                with open(filepath, 'wb') as up:
                    up.write(meta['body'])
        except Exception as e:
            print e
            return self.write(json.dumps({"status": 'error', "msg": u"图片上传失败，请重新上传"}))
        else:
            print json.dumps({"status": 'ok', "msg": "", "base_url": "", "name": filename})
            return self.write(json.dumps({"status": 'ok', "msg": "", "base_url": "", "name": filename}))