Django之三种文件上传

方式一:

通过form表单提交到后台

前端:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="/upload/" method="post" enctype="multipart/form-data">
        <input type="file" name="fafafa">
        <input type="submit">
    </form>
</body>
</html>

Django 后端:

def upload(request):
    if request.method == 'POST':# 获取对象
        obj = request.FILES.get('fafafa')
        import os
    # 上传文件的文件名
    print(obj.name) f = open(os.path.join(BASE_DIR, 'static', 'pic', obj.name), 'wb') for chunk in obj.chunks(): f.write(chunk) f.close() return HttpResponse('OK') return render(request, 'upload/upload.html')
 

 方式二:

通过ajax提交

前端

<div>
        <input type="file" name="file" id="file_upload">
        <input type="button" value="上传" onclick="FileUpload()">
</div>

JS:

<script src="/static/js/jquery-3.2.1.min.js"></script>
<script>
    function FileUpload() {
            var form_data = new FormData();
            var file_info =$( '#file_upload')[0].files[0];
            form_data.append('file',file_info);
            //if(file_info==undefined)暂且不许要判断是否有附件
                //alert('你没有选择任何文件');
                //return false
            $.ajax({
                url:'/upload_ajax/',
                type:'POST',
                data: form_data,
                processData: false,  // tell jquery not to process the data
                contentType: false, // tell jquery not to set contentType
                success: function(callback) {

                    console.log('ok')
                }
            });

            }</script>

Django 后端:

 
def upload_ajax(request):
    if request.method == 'POST':
        file_obj = request.FILES.get('file')
        import os
        f = open(os.path.join(BASE_DIR, 'static', 'pic', file_obj.name), 'wb')
        print(file_obj,type(file_obj))
        for chunk in file_obj.chunks():
            f.write(chunk)
        f.close()
        print('11111')
        return HttpResponse('OK')
 

注意:

前台发送ajax请求时:

processData: false,  // tell jquery not to process the data
contentType: false, // tell jquery not to set contentType
必须设置
方式三:通过iframe标签提交
httml
 <h1>测试Imframe</h1>
  <input type="text" id="url">
  <input type="button" value="点击" onclick="iframeChange()">
  <iframe id="ifr" src=""></iframe>
   <hr/>
   <h1>基于iframe实现formt提交 </h1>
   <form action="/upload_Formdata.html" method="post" target="iframe_123" enctype="multipart/form-data">
       <iframe id="iframe_1" name="iframe_123" src="" onload="loadIframe();"></iframe>
       <input type="text" name="user">
       <input type="file" name="fafafa">
       <input type="submit">
   </form>

js:这里from标签的target和iframe的那么保持一致,form提交后会跳转到或者链接到iframe

<script src="/static/jquery-2.1.4.min.js"></script>
<script>
 function iframeChange() {
        var url = $('#url').val();
        $('#ifr').attr('src',url)
    }
    function loadIframe() {//iframe加载完后执行
        console.log(1)
        //获取iframe内部的内容
        var str_json = $('#iframe_1').contents().find('body').text()
        var obj = JSON.parse(str_json)
        if(obj.status){
                var img = document.createElement('img');
                img.src = "/" + obj.path;
                $('#imgs').append(img);
        }
    }
    
</script>

Django 后端:

import json
def  upload_Formdata(request):
     if request.method=="GET":
         img_list=models.Img.objects.all()
         return  render(request,'upload_Formdata.html',{"img_list":img_list})
     elif request.method=="POST":
         obj=request.FILES.get('fafafa')
         file_path=os.path.join('static','upload',obj.name)
         f=open(file_path,'wb')

         for chunk in obj.chunks():
             f.write(chunk)
         f.close()

         models.Img.objects.create(path=file_path)
         ret = {'status':True,'path':file_path,'text':123}
         return  HttpResponse(json.dumps(ret))

以上是文件上传的三种方式,在Tornado种也可以使用。

扩展:

在前段提交的时候 可以存在 checkbox 标签, 在Django中对于这种标签在后台获取值时用:

  request.POST.getlist('favor', None) checkbox

其它

request.POST.get('favor', None)  checkbox

 

 

 

复制代码
def upload(request):
    if request.method == 'POST':# 获取对象
        obj = request.FILES.get('fafafa')
        import os
    # 上传文件的文件名
    print(obj.name) f = open(os.path.join(BASE_DIR, 'static', 'pic', obj.name), 'wb') for chunk in obj.chunks(): f.write(chunk) f.close() return HttpResponse('OK') return render(request, 'upload/upload.html')
复制代码

 方式二:

通过ajax提交

前段

<div>
        <input type="file" name="file" id="file_upload">
        <input type="button" value="上传" onclick="FileUpload()">
</div>

JS:

复制代码
<script src="/static/js/jquery-3.2.1.min.js"></script>
<script>
    function FileUpload() {
            var form_data = new FormData();
            var file_info =$( '#file_upload')[0].files[0];
            form_data.append('file',file_info);
            //if(file_info==undefined)暂且不许要判断是否有附件
                //alert('你没有选择任何文件');
                //return false
            $.ajax({
                url:'/upload_ajax/',
                type:'POST',
                data: form_data,
                processData: false,  // tell jquery not to process the data
                contentType: false, // tell jquery not to set contentType
                success: function(callback) {

                    console.log('ok')
                }
            });

            }</script>
复制代码

Django 后端:

复制代码
def upload_ajax(request):
    if request.method == 'POST':
        file_obj = request.FILES.get('file')
        import os
        f = open(os.path.join(BASE_DIR, 'static', 'pic', file_obj.name), 'wb')
        print(file_obj,type(file_obj))
        for chunk in file_obj.chunks():
            f.write(chunk)
        f.close()
        print('11111')
        return HttpResponse('OK')
复制代码

注意:

前台发送ajax请求时:

processData: false,  // tell jquery not to process the data
contentType: false, // tell jquery not to set contentType
必须设置

方式三:
通过iframe标签提交
前段
复制代码
   <div>
        <form id="my_form" name="form" action="/upload_iframe/" method="POST" enctype="multipart/form-data">
            <input type="text" name="user">
            <input type="password" name="password">
            <input type="file" name="file">
            <input type="button" value="upload"  onclick="UploadFile()">
        </form>
        <iframe id='my_iframe' name='my_iframe' src="" class="hide"></iframe>
    </div>
复制代码

JS:

复制代码
    function UploadFile() {
        document.getElementById('my_iframe').onload = Testt;
        document.getElementById('my_form').target = 'my_iframe';
        document.getElementById('my_form').submit();
    }
    function Testt(ths){
            var t = $("#my_iframe").contents().find("body").text();
            console.log(t);
        }
复制代码

Django 后端:

复制代码
def upload_iframe(request):
    if request.method == 'POST':
        print(request.POST.get('user', None))
        print(request.POST.get('password', None))
        file_obj = request.FILES.get('file')
        import os
        f = open(os.path.join(BASE_DIR, 'static', 'pic', file_obj.name), 'wb')
        print(file_obj,type(file_obj))
        for chunk in file_obj.chunks():
            f.write(chunk)
        f.close()
        print('11111')
        return HttpResponse('OK')
复制代码

参考学习:https://www.cnblogs.com/jishuweiwang/p/6140132.html

以上是文件上传的三种方式,在Tornado种也可以使用。

扩展:

在前段提交的时候 可以存在 checkbox 标签, 在Django中对于这种标签在后台获取值时用:

  request.POST.getlist('favor', None) checkbox

其它

request.POST.get('favor', None)  checkbox


 



 

 
 
 
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posted @ 2017-11-19 10:13 TianTianLi 阅读(5059) 评论(0)  编辑 收藏

 

 
 
posted @ 2018-08-07 09:17  小L小  阅读(13941)  评论(0编辑  收藏  举报