2a09d1a4
 liuqimichale
添加宜春 天水 宣化
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function getError(action, option, xhr) {
let msg;
if (xhr.response) {
msg = `${xhr.response.error || xhr.response}`;
} else if (xhr.responseText) {
msg = `${xhr.responseText}`;
} else {
msg = `fail to post ${action} ${xhr.status}`;
}
const err = new Error(msg);
err.status = xhr.status;
err.method = 'post';
err.url = action;
return err;
}
function getBody(xhr) {
const text = xhr.responseText || xhr.response;
if (!text) {
return text;
}
try {
return JSON.parse(text);
} catch (e) {
return text;
}
}
export default function upload(option) {
if (typeof XMLHttpRequest === 'undefined') {
return;
}
const xhr = new XMLHttpRequest();
const action = option.action;
if (xhr.upload) {
xhr.upload.onprogress = function progress(e) {
if (e.total > 0) {
e.percent = e.loaded / e.total * 100;
}
option.onProgress(e);
};
}
const formData = new FormData();
if (option.data) {
Object.keys(option.data).forEach(key => {
formData.append(key, option.data[key]);
});
}
formData.append(option.filename, option.file, option.file.name);
xhr.onerror = function error(e) {
option.onError(e);
};
xhr.onload = function onload() {
if (xhr.status < 200 || xhr.status >= 300) {
return option.onError(getError(action, option, xhr));
}
option.onSuccess(getBody(xhr));
};
xhr.open('post', action, true);
if (option.withCredentials && 'withCredentials' in xhr) {
xhr.withCredentials = true;
}
const headers = option.headers || {};
for (let item in headers) {
if (headers.hasOwnProperty(item) && headers[item] !== null) {
xhr.setRequestHeader(item, headers[item]);
}
}
xhr.send(formData);
return xhr;
}
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