以下是我的代码有关文件上传的摘要。
这是我的HTML代码,我将选择并上传文件:
<form ng-click="addImportFile()" enctype="multipart/form-data">
<label for="importfile">Import Time Events File:</label><br><br>
<label for="select_import_file">SELECT FILE:</label><br>
<input id="import_file" type="file" class="file btn btn-default" ng-disabled="CutOffListTemp.id== Null" data-show-preview="false">
<input class="btn btn-primary" type="submit" name="submit" value="Upload" ng-disabled="CutOffListTemp.id== Null"/><br/><br/>
</form>
这是我的控制器,它将链接html和我的python文件:
angular.module('hrisWebappApp').controller('ImportPayrollCtrl', function ($scope, $state, $stateParams, $http, ngTableParams, $modal, $filter) {
$scope.addImportFile = function() {
$http.post('http://127.0.0.1:5000/api/v1.0/upload_file/' + $scope.CutOffListTemp.id, {})
.success(function(data, status, headers, config) {
console.log(data);
if (data.success) {
console.log('import success!');
} else {
console.log('importing of file failed' );
}
})
.error(function(data, status, headers, config) {});
};
这是我的python文件:
@api.route('/upload_file/<int:id>', methods=['GET','POST'])
@cross_origin(headers=['Content-Type'])
def upload_file(id):
print "hello"
try:
os.stat('UPLOAD_FOLDER')
except:
os.mkdir('UPLOAD_FOLDER')
file = request.files['file']
print 'filename: ' + file.filename
if file and allowed_file(file.filename):
print 'allowing file'
filename = secure_filename(file.filename)
path=(os.path.join(current_app.config['UPLOAD_FOLDER'], filename))
file.save(path) #The end of the line which save the file you uploaded.
return redirect(url_for('uploaded_file',
filename=filename))
return '''
<!doctype html>
<title>Upload new File</title>
<h1>Upload new File</h1>
<p>opsss it seems you uploaded an invalid filename please use .csv only</p>
<form action="" method=post enctype=multipart/form-data>
<p><input type=file name=file>
<input type=submit value=Upload>
</form>
'''
即使我选择了正确的文件格式,控制台中的结果也给了我这个:
<!doctype html>
<title>Upload new File</title>
<h1>Upload new File</h1>
<p>opsss it seems you uploaded an invalid filename please use .csv only</p>
<form action="" method=post enctype=multipart/form-data>
<p><input type=file name=file>
<input type=submit value=Upload>
</form>
这不会返回我的HTML而我无法上传文件。
答案 0 :(得分:3)
嗨我终于可以上传文件了,我改变了角度部分,我改变了它:
$scope.addImportFile = function() {
var f = document.getElementById('file').files[0]; console.log(f);
var formData = new FormData();
formData.append('file', f);
$http({method: 'POST', url: 'http://127.0.0.1:5000/api/v1.0/upload_file/' +$scope.CutOffListTemp.id,
data: formData,
headers: {'Content-Type': undefined},
transformRequest: angular.identity})
.success(function(data, status, headers, config) {console.log(data);
if (data.success) {
console.log('import success!');
}
})
.error(function(data, status, headers, config) {
});
// }
};
答案 1 :(得分:1)
首先是关于帖子请求。如果没有ng-click =&#34; addImportFile()&#34;,浏览器通常会负责序列化表单数据并将其发送到服务器。所以,如果你尝试:
<form method="put" enctype="multipart/form-data" action="http://127.0.0.1:5000/api/v1.0/upload_file">
<label for="importfile">Import Time Events File:</label><br><br>
<label for="select_import_file">SELECT FILE:</label><br>
<input id="import_file" type="file" name="file" class="file btn btn-default" ng-disabled="CutOffListTemp.id== Null" data-show-preview="false">
<input class="btn btn-primary" type="submit" name="submit" value="Upload" ng-disabled="CutOffListTemp.id== Null"/><br/><br/>
</form>
然后在python中,使你的请求url独立于scope.CutOffListTemp.id: @ api.route(&#39; / upload_file&#39;,methods = [&#39; GET&#39;,&#39; POST&#39;])
它可能会奏效。
或者,如果您想使用自定义函数发送帖子请求,浏览器将不再处理序列化内容,您需要自己完成。
在angular中,$ http.post的API是: $ http.post(&#39; / someUrl&#39;,data).success(successCallback); 如果我们使用&#34; {}&#34;对于data参数,这意味着为空,服务器将找不到名为&#34; file&#34;的数据。 (file = request.files [&#39; file&#39;])。因此,您将看到错误的请求
要解决此问题,我们需要使用formData进行文件上传,这需要您的浏览器支持HTML5:
$scope.addImportFile = function() {
var f = document.getElementById('file').files[0]
var fd = new FormData();
fd.append("file", f);
$http.post('http://127.0.0.1:5000/api/v1.0/upload_file/'+$scope.CutOffListTemp.id,
fd,
headers: {'Content-Type': undefined})
.success......
除了使用上面的原生javascript代码之外,还有很多很棒的角度文件上传库,可以让角度更容易上传文件,你可能想看看其中一个(参考:File Upload using AngularJS ):