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：
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↓