在 vue 项目中使用 axios 将文件上传到 oss 一直报错要怎么解决？

直接使用 XMLHttpRequest 完成oss图片上传。（具体代码如下：）

const importFile = async (event: any) => {
const file = event.target.files[0];
defaultPercent.value = 0;
let formData = new FormData();
uploadText.value = file.name;
let classType = file.name.substring(file.name.lastIndexOf(".") + 1);
formData.append("name", file.name);
formData.append("key", file.name);
formData.append("policy", policy);
formData.append("OSSAccessKeyId", OSSAccessKeyId);
formData.append("success_action_status", "200");
formData.append("signature", signature);
formData.append("file", file);
let xhr = new XMLHttpRequest();
xhr.upload.onprogress = function (e) {
if (e.lengthComputable) {
// 获取百分制的进度
defaultPercent.value = Math.round(e.loaded / e.total * 100);
}
}
xhr.open("post", ossUrl, true)
xhr.send(formData);
xhr.onreadystatechange = function () { //绑定响应状态事件监听函数
if (xhr.readyState == 4) { //监听readyState状态
if (xhr.status == 200 || xhr.status == 0) { //监听HTTP状态码
emit("uploadData", { classType, url: ossUrl + "/" + file.name });
}
}
}
}