标签:json state ESS return new obj har bottom center
后端代码
def upload(request): if request.method == "GET": return render(request,‘upload.html‘) if request.method =="POST": pass def upload_file(request): request.POST.get(‘username‘) fafafa = request.FILES.get(‘fileobj‘) img_path = os.path.join(‘static/img/‘,fafafa.name) with open( img_path, ‘wb‘) as f: for item in fafafa.chunks(): f.write(item) ret = {‘code‘:True,‘data‘:img_path} return HttpResponse(json.dumps(ret))
html文件
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> .c1 { position: relative; width: 100px; height: 30px; text-align: center; line-height: 30px; border-radius: 50%; } .c2 { position: absolute; width: 100px; height: 30px; z-index: 10; opacity: 0; top: 0; bottom: 0; right: 0; left: 0; } .c3 { display: inline-block; background-color: blue; color: white; z-index: 9; position: absolute; top: 0; bottom: 0; right: 0; left: 0; } </style> </head> <body> <div class="c1"> <input class="c2" type="file" id="file11" name="file1"/> <a class="c3">上传</a> </div> <h3>原生XMLHttpRequest提交</h3> <input type="button" value="XML提交" onclick="xhrSunbmit();"> <h3>jquery提交</h3> <input type="button" value="jquery提交" onclick="jqSunbmit();"> <hr/> <hr/> <h3>iframe提交</h3> <form id="form1" action="/upload_file/" method="POST" enctype="multipart/form-data" target="ifm1"> {% csrf_token %} <iframe id="ifm1" name="ifm1" style="display: none;"></iframe> <input type="file" name="fileobj" onchange="changeUpalod();" /> {# <input type="submit" onclick="iframeSubmit();" value="Form提交"/>#} </form> <div id="preview"></div> <script src="/static/jquery.js"></script> <script src="/static/jquery.cookie.js"></script> <script> function xhrSunbmit() { var file_obj = document.getElementById(‘file11‘).files[0]; var fd = new FormData(); fd.append(‘username‘, ‘root‘); fd.append(‘fileobj‘, file_obj); var xhr = new XMLHttpRequest(); xhr.open(‘POST‘, ‘/upload_file/‘, true); xhr.setRequestHeader("X-CSRFToken", $.cookie(‘csrftoken‘)); xhr.onreadystatechange = function () { if (xhr.readyState == 4) { var obj = JSON.parse(xhr.responseText); console.log(obj); } }; xhr.send(fd); } function jqSunbmit() { var file_obj = document.getElementById(‘file11‘).files[0]; var fd = new FormData(); fd.append(‘username‘, ‘root‘); fd.append(‘fafafa‘, file_obj); $.ajax({ url: ‘/upload_file/‘, type: ‘POST‘, headers: {‘X-CSRFtoken‘: $.cookie(‘csrftoken‘)}, data: fd, processData: false, // tell jQuery not to process the data contentType: false, // tell jQuery not to set contentType success: function (arg, a1, a2) { console.log(arg); console.log(a1); console.log(a2); } }) } function changeUpalod(){ $(‘#ifm1‘).load(function(){ var text = $(‘#ifm1‘).contents().find(‘body‘).text(); var obj = JSON.parse(text); $(‘#preview‘).empty(); var imgTag = document.createElement(‘img‘); imgTag.src = "/" + obj.data; $(‘#preview‘).append(imgTag); }); $(‘#form1‘).submit(); } /* function iframeSubmit(){ $(‘#ifm1‘).load(function(){ var text = $(‘#ifm1‘).contents().find(‘body‘).text(); var obj = JSON.parse(text); $(‘#preview‘).empty(); var imgTag = document.createElement(‘img‘); imgTag.src = "/" + obj.data; $(‘#preview‘).append(imgTag); }) }*/ </script> </body> </html>
使用ajax发送文件的三种方式及预览图片的方法,上传按钮美化
标签:json state ESS return new obj har bottom center
原文地址:https://www.cnblogs.com/qiangayz/p/9022533.html