Question

Bellow是我用来使用NodeJS和aws-sdk将文件上传到S3的代码。一切似乎工作正常，但浏览器只是挂起。此外，当我尝试在S3上打开图像时，它会显示破碎。

module.exports = function(app) {


    app.post('/upload', function(req, res){
        var AWS = require('aws-sdk');
        var accessKeyId =  process.env.AWS_ACCESS_KEY;
        var secretAccessKey = process.env.AWS_SECRET_KEY;

        //pull var from heroku else send to dev
        AWS.config.update({
            accessKeyId: accessKeyId,
            secretAccessKey: secretAccessKey
        });

        var s3 = new AWS.S3();
        var file = req.files.filechooser;
        if (file) {

            var params = {
                Bucket: 'mybucket',
                Body: new Buffer(file, 'binary'),
                ACL:'public-read',
                ContentType: file.type,
                Key: "ugc/" + file.name,
                ContentLength: file.size
            };
            s3.putObject(params, function(err, data){
                if (err) {
                    console.log("Error uploading data: ", err);
                } else {
                    console.log("Successfully uploaded data to myBucket/myKey");
                }
            }).
                on('httpUploadProgress', function(chunk) {
                    console.log("Uploaded", chunk.loaded, "of", chunk.total, "bytes");
                }).
                on('httpDone', function() {
                    console.log("done");
                });

            console.log("called");
        } else {
            console.log('Nothing to upload.');
        }
    });
}

Answer 1

在为侦听器重新编程之后，您需要完成对putObject的调用，以实际使用send启动上载。默认情况下，如果向返回响应的S3方法提供回调，则必须使用send（）手动启动请求;

            on('httpUploadProgress', function(chunk) {
                console.log("Uploaded", chunk.loaded, "of", chunk.total, "bytes");
            }).
            on('httpDone', function() {
                console.log("done");
            }).
            send(); // Actually initiate the request

见

详情。

文件上传到S3，但超时和文件损坏

1 个答案: