Django普通文件上传

前端代码：

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <script src="/static/jquery-3.2.1.min.js"></script>

    <script src="/static/jquery.cookie.js"></script>

</head>

<body>

<h1>文件上传页面</h1>

<form action="/upload/" method="post" enctype="multipart/form-data">

    {% csrf_token %}

    <p>用户名：<input type="text" name="username"></p>

    <p>文件：<input type="file" name="file"></p>

    <input type="submit" value="提交"><span>{{ successful }}</span>

</form>

</body>

</html>

后端处理：

def upload(request):

    if request.method == "GET":

        return render(request,"upload.html")

    else:
file_obj = request.FILES.get("file")

        with open(file_obj.name,"wb") as f:

            for line in file_obj:

                f.write(line)

        successful = "上传成功"

        return render(request,"upload.html",locals())

效果图：

Django普通文件上传

利用formdata上传文件：

用formdata上传需要先建立一个对象，然后这个对象吧里面的值append进去，串数据的时候直接把formdate串过去就好了

前端代码：

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <script src="/static/jquery-3.2.1.min.js"></script>

    <script src="/static/jquery.cookie.js"></script>

</head>

<body>

<form action="" id="s1">

    <p>姓名：<input type="text"></p>

    <p>密码：<input type="password"></p>

    <p>头像：<input type="file" id="upload" name="file"></p>

</form>
<p><button class="Ajax_send">Ajax_send</button><span class="login_error"></span></p>        #button需要放在form表单外边

</body>

<script>

    function foo() {

        $(".login_error").html("")

    }

    $(".Ajax_send").click(function () {
var formDate = new FormData();

        formDate.append("username",$(":text").val());

        formDate.append("password",$(":password").val());

        formDate.append("avatar",$("#upload")[0].files[0]);

        $.ajax({

            url:"/ajax_form/",

            type:"POST",

            headers:{"X-CSRFToken":$.cookie('csrftoken')},

            data:formDate,

            contentType:false,

            processData:false,

            success:function (data) {

                var data = JSON.parse(data);

                if(!data["flag"]){

                    $(".login_error").html("用户名或密码错误")

                    setTimeout(foo,3000)

                }

                else{

                    alert("上传成功")

                }

            }

        })

    })

</script>

</html>

后端代码：

def ajax_form(request):

    if request.method == "GET":

        return render(request,"formdate.html")

    else:

        username = request.POST.get("username")

        password = request.POST.get("password")

        file_obj = request.FILES.get("avatar")

        print("===================>",file_obj)

        with open(file_obj.name, "wb") as f:

            for line in file_obj:

                f.write(line)

        response = {"flag":False}

        if username=="username" and password == "password":

            response["flag"] = True

        import json

        return HttpResponse(json.dumps(response))

简单的上传操作会让页面刷新，还有利用ajax无刷新技术上传的方式↓

秒客网

Django普通文件上传

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