如何在没有凭据的情况下将文件上传到s3公共存储桶中客户端javascript [英] how to upload files to s3 public bucket without credentials form client side javascript

问题描述

我们想使用Javascript AWS开发工具包将文件上传到S3，但完全不使用凭证.使用凭据上传有效

We'd like to use Javascript AWS SDK to upload files to S3, but without using credentials at all. Uploading using credentials works

我们有一个存储桶，当我尝试上传此错误时，所有人都可以上传和下载文件的权限

We have a bucket which has the permissions of anyone that can upload and download files when i am trying to upload i'm getting this error

message: "No credentials to load"

我的代码:

var bucket = new AWS.S3({params: {Bucket: 'bucketName'}});

 var params = {Key: 'data.txt', Body: "kkkkkkkkkkkk"};

bucket.putObject(params, function (err, data) {
alert(err)

});

推荐答案

如果您已为所有用户设置了读/写权限，并且存储桶的cors配置允许PUT请求，则您应该可以使用ajax轻松完成此操作:

If you have set read/write permissions for all users and your bucket's cors configuration allows PUT requests you should be able to simply do it with ajax:

function httpReq(method, url, data, successCB, errorCB) {
    var xhr = new XMLHttpRequest();

    xhr.addEventListener('load', function () {
        if (xhr.status == 200) {
            successCB(xhr.response);
        } else {
            errorCB({status: xhr.status, response: xhr.response});
        }
    });

    xhr.open(method, url, true);
    xhr.send(data);
}

httpReq('PUT', 'http://yourBucket.s3.amazonaws.com/yourKey', file, function (response) {
    console.log('Upload Successful', response);
}, function (error) {
    console.error(error);
});

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