Django项目中使用plupload插件实现上传图片功能

喜欢ヅ旅行 2021-11-01 03:34 385阅读 0赞

首先下载plupload插件放在static静态文件下面，官方地址:[https://www.plupload.com/][https_www.plupload.com]

项目根目录下创建media文件夹用来存放上传的图片，配置settings文件，添加media的文件路径

MEDIA_ROOT = os.path.join(BASE_DIR,'media')

先写前端html页面

{#    引入插件#}
        <script src="/static/plupload/moxie.js"></script>
        <script src="/static/plupload/plupload.min.js"></script>
    
    
    {#定义上传图片的按键和显示位置#}
        <div class="sbox f_l"><span>上传图片</span>
            {% for i in img %}
            <img src="{
         { i.src }}" alt="">
            {% endfor %}
            <h2><a id="upload_image_name" src="javascript:;"><input type="button" value="上传图片"></a></h2>
            <ul id="image_name_list"></ul>
            {#        <a href="/" class="read">点击阅读</a>#}
        </div>

写前端js语法

{#上传图片#}
    <script language="JavaScript">
    
    
        var msgLayero_upload_image_name;
        var index_upload_image_name;
        var layer_upload_image_name = 1;
        //实例化一个plupload上传对象
        var uploader_upload_image_name = new plupload.Uploader({
            browse_button: 'upload_image_name', //触发文件选择对话框的按钮，为那个元素id
            url: '/apply/upload/', //服务器端的上传页面地址
            flash_swf_url: '/static/plupload/Moxie.swf', //swf文件，当需要使用swf方式进行上传时需要配置该参数
            silverlight_xap_url: '/static/plupload/Moxie.xap', //silverlight文件，当需要使用silverlight方式进行上传时需要配置该参数
            multipart_params: {
                type: 'image_name',
                csrfmiddlewaretoken: "{
        { csrf_token }}"
            },
            resize: {
                width: 800//指定压缩后图片的宽度，如果没有设置该属性则默认为原始图片的宽度
                //height: , //指定压缩后图片的高度，如果没有设置该属性则默认为原始图片的高度
                //crop: false //是否裁剪图片
            },
            filters: {
                max_file_size: '4mb'
            },
            init: {
                //选择文件
                FilesAdded: function (up, files) {
                    //加载层
                    index_upload_image_name = layer.msg('上传中...', {
                        icon: 16, time: 0,
                        shade: 0.01,
                        success: function (layero, index) {
                            msgLayero_upload_image_name = layero;//是加载层的div
                        }
                    });
                    //layer_upload_image_name = layer.msg('上传中...', {time: 0}); //不自动关闭
                    uploader_upload_image_name.start();
                },
                UploadProgress: function (up, file) { //上传中，显示进度条
                    var percent = file.percent;
                    msgLayero_upload_image_name.find('.layui-layer-content').html('<i class="layui-layer-ico layui-layer-ico1"></i>上传中...' + percent + '%');
    
                },//单个文件上传完成
                FileUploaded: function (up, file, responseObject) {
                    console.log($.parseJSON(responseObject.response));//成功回调函数
    
                    {#                    $('#image_name_list').html('');#}
                    var result = $.parseJSON(responseObject.response);
                    if (result.status == 1) {
                        //上传成功
                        var htmls = '<li class="img_upload" style="position:relative;margin:0 10px -10px 0;">';
                        htmls += '<input  type="hidden" name="image_name[]" value="' + result.file + '">'; //隐藏域，是为了把图片地址入库。。
                        htmls += '   <img src="' + result.file + '" width="250"  >';
                        htmls += '<span  style="position:absolute;top:-8px;right:-6px;background-color:#fff;border-radius:10px;"><a href=javascript:; class="delImg" data-val="' + result.file + '"> <img src="/static/images/del.png" width="15" /></a></span>';
                        htmls += '</li>';
    {#                    $('#image_name_list').append(htmls);为可同时上传多张图片，$('#image_name_list').html(htmls);为一次智能上传一张图片#}
                        $('#image_name_list').append(htmls);
                        //上传成功的弹出框
                        msgLayero_upload_image_name.find('.layui-layer-content').html('<i class="layui-layer-ico layui-layer-ico1"></i>' + result.message);
    
                    } else {
                        //上传失败的弹出框
                        msgLayero_upload_image_name.find('.layui-layer-content').html('<i class="layui-layer-ico layui-layer-ico2"></i>' + result.message);
    
                    }
                    setTimeout(function () {
                        layer.close(index_upload_image_name);
                    }, 2000);
    
                },
                //全部文件上传完成
                UploadComplete: function (up, files) {
                    setTimeout(function () {
                        layer.close(index_upload_image_name);
                    }, 2000);
                },
                //返回错误
                Error: function (up, err) {
                    msgLayero_upload_image_name.find('.layui-layer-content').html('<i class="layui-layer-ico layui-layer-ico2"></i>' + result.message);
                    setTimeout(function () {
                        layer.close(index_upload_image_name);
                    }, 2000);
                }
            }
        });
    
        uploader_upload_image_name.init();
    
    {#    删除准备上传的图片#}
        $(document).on('click', '.delImg', function () {
            _this = this;
            $.post('{% url "apply:delimg/" %}', {
                path: $(_this).data("val"),
                csrfmiddlewaretoken: "{
        { csrf_token }}"
            }, function (json) {
                if (json.status == 1) {
                    layer.msg("删除成功", {
                        time: 2000 //2s后自动关闭
                    });
                    $(_this).parent().parent().remove();
                } else {
                    layer.msg("删除失败", {
                        time: 2000 //2s后自动关闭
                    });
                }
            }, 'json');
        });
    </script>

django后台，先创建路由

from django.urls import path,include,re_path
    from apply.views import apply
    
    urlpatterns = [
        path('index/',apply.index,name='index/'),
        path('about/',apply.about,name='about/'),
        path('info/',apply.info,name='info/'),
        path('list/',apply.list,name='list/'),
        path('time/',apply.time,name='time/'),
        path('fanyi/',apply.fanyi,name='fanyi/'),
        # 上传图片
        path('upload/',apply.upload,name='upload/'),
        # 删除准备上传的图片
        path('delimg/',apply.delimg,name='delimg/'),
    
    ]

写方法。

from django.shortcuts import render,redirect,HttpResponse
    from apply.utils import function
    from blacker import settings
    import os
    import json
    from apply.models import *

# 上传图片
    def upload(request):
        img_obj = request.FILES.get("file")  # 通过前台提交过来的图片资源   img_obj.name  avatar.jpg
        range_num = function.range_num(15)  # 生成一个15位随机数
    
        print(img_obj.name)
        img_type = os.path.splitext(img_obj.name)[1]  # .jpg  获取文件名后缀
        new_img_path = os.path.join(settings.MEDIA_ROOT,
                                    range_num + img_type)  # E:\ftp\code\www\pro\media\add_article_img\676161546271228.jpg        #/media/add_article_img/123456.jpg
        print(new_img_path)
        img_type2 = img_type.replace(".", "")  # png
    
        with open(new_img_path, "wb") as f:
            for line in img_obj:
                f.write(line)
        response = {
            "status": 1,
            "message": "上传成功",
            'file': '/media/'+range_num + img_type+'/',
            'file_type': img_type2
        }
        res = Media.objects.create(src='/media/'+range_num + img_type+'/')
        return HttpResponse(json.dumps(response))
    # 删除正在上传的图片
    def delimg(request):
        print(12)
        img_path = request.POST.get('path')  # /media/add_article_img/722264423391172.jpg
        # img_name = os.path.split(img_path)[-1]  # 获取图片名称 722264423391172.jpg
        img_name = img_path.split('/')[-2]  # 获取图片名称 722264423391172.jpg
        img_new_path = os.path.join(settings.MEDIA_ROOT,img_name)  # E:\ftp\code\www\pro\media\add_article_img\722264423391172.jpg
        if not os.remove(img_new_path):
            response = {
                "status": 1,
                "message": "删除成功"
            }
            return HttpResponse(json.dumps(response))

方法里面有用到function.range\_num函数，这是一个封装的产生随机数函数，在应用目录下创建utils文件夹，并创建function.py文件，内容如下

import random
    # 随机数
    def range_num(num):
        # 定义一个种子，从这里面随机拿出一个值，可以是字母
        seeds = "1234567890"
        # 定义一个空列表，每次循环，将拿到的值，加入列表
        random_num = []
        # choice函数：每次从seeds拿一个值，加入列表
        for i in range(num):
            random_num.append(random.choice(seeds))
        # 将列表里的值，变成四位字符串
        return "" . join(random_num)#5454

上传发现图片上传成功，但是页面不能正常显示；

![1696039-20190808154751017-955233042.png][]![1696039-20190808155236293-1658008639.png][]

需要再配置路由，

from django.contrib import admin
    from django.urls import path,include,re_path
    from apply.views import apply
    from django.views.static import serve
    from blacker import settings
    urlpatterns = [
        re_path(r'^media/(?P<path>.*)', serve, {
        "document_root":settings.MEDIA_ROOT}),
        path('',apply.index,name='index/'),
        path('admin/', admin.site.urls),
        path('apply/',include(('apply.urls','apply')))
    ]

配置后在上传图片如图所示

![1696039-20190808155607707-426356368.png][]

同时图片已写入数据库，从数据库获取数据并写在页面上；

![1696039-20190808155954978-1836141697.png][]![1696039-20190808160024154-1967860178.png][]

done。

转载于:https://www.cnblogs.com/nmsghgnv/p/11321751.html

[https_www.plupload.com]: https://www.plupload.com/
[1696039-20190808154751017-955233042.png]: https://img2018.cnblogs.com/blog/1696039/201908/1696039-20190808154751017-955233042.png
[1696039-20190808155236293-1658008639.png]: /images/20211101/6b9ff5f06a0044b7a8344d58681295a7.png
[1696039-20190808155607707-426356368.png]: /images/20211101/2a155033bc0e4a388eb76710acaee6d8.png
[1696039-20190808155954978-1836141697.png]: https://img2018.cnblogs.com/blog/1696039/201908/1696039-20190808155954978-1836141697.png
[1696039-20190808160024154-1967860178.png]: /images/20211101/f7ac997ccbc942e3b397afe479cb8d99.png