Angular Js file upload form-data_javascript technique
Foreword: I haven’t updated my blog for a long time. Recently, the company’s PC-side technology selection uses Angular. In the past few days, I have been rushing to put it on the shelves, so I bite the bullet and start using Angular directly. There are many small pits that can be stepped on one after another. Today I encountered a relatively common problem: image uploading.
Theme: The image is uploaded to the server, and then transmitted to Alibaba Cloud through the server.
No more nonsense, just post the front-end code:
$http({
method: ‘POST‘,
url: ‘/wechatapp/User/setAvatar‘,
data: data,
headers: {
‘Content-Type‘: undefined
},
transformRequest: function(data) {
var formData = new FormData();
formData.append(‘avatar_data‘, data.adata);
formData.append(‘avatar_file‘, data.file);
return formData;
},
data: {
adata: scope.avatar_data,
file: scope.avatar_file
}
}).success(function(d) {
//请求成功
cb(d);
}).error(function(err, status) {
console.log(err);
cb(err);
});In fact, there is no difficulty. The main thing is to cancel the default Content-Type of the post, and then upload it in the form of FormData. Generally, ajax upload files are uploaded in FormData mode.
The above is the article introducing form-data for Angular Js file upload. I hope you like it.
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