File upload 使用node.js上的knox将八位字节流从请求流到S3

我正在尝试使用on node.js将一个八位字节流直接传输到S3。八位字节流是从浏览器上载的XHR文件。我假设我可以将请求流式传输到putStream中，一切都可以正常工作，但可惜不行

这是我的密码：

var client = knox.createClient({ 
           // AWS credentials here
         });
if (req.headers['content-type'].match(/application\/octet-stream/i)) {

  var filename = '/'+req.headers['x-file-name'];

  client.putStream(req, filename, function(err, res){
    // TODO: Catch errors
    body = '{"success":"true"}'
    res.writeHead(200, 
      { 'Content-Type':'text/html'
      , 'Content-Length':body.length
      })
    res.end(body)
  });

}

我收到的错误是：

TypeError: Bad argument
    at Object.stat (fs.js:354:11)
    at Client.putStream (./lib/knox/client.js:181:6)

---

如果您使用的node.js版本比0.4.5旧得多，请升级

查看并使用util.pump将文件从输入流复制到输出流。如果必须先下载文件，只需使用文件中的ReadStream作为输入流

---

另外，请看一下，因为我怀疑您还没有完全掌握node.js中异步I/O的工作原理。

我相信

client.putStream

接受4个参数，如下所示：

client.putStream(stream, filepath, {
  'Content-Length': file.length,
  'Content-Type': 'application/octet-stream',
  'x-amz-acl': 'private'
}, function(err, res) {
  ...
});

app.post('/uploadAmazon', function(req, res) {  
var params = req.query;

var request = client.request("PUT", '/' + req.header('x-file-name') + '?partNumber=' + params.partNumber 
        + '&uploadId=' + params.uploadId, {
    'Content-Length' : req.header('Content-Length')
} );

req.on('data', function(data){
    request.write(data);
});


request.on('response', function(response) {
    console.log('Partial ' + params.partNumber + ' statusCode: ' + response.statusCode);
    if (response.statusCode== 200) {
        uploadMap[params.id].currentSize++;
        uploadMap[params.id].completeXmlArray[+(params.partNumber) - 1] = '<Part><PartNumber>' + params.partNumber + '</PartNumber><ETag>' + response.headers.etag + '</ETag></Part>' ; 

        if (uploadMap[params.id].currentSize == uploadMap[params.id].totalSize) {
            uploadMap[params.id].uploadId = params.uploadId;
            completeSend(uploadMap[params.id]);
        }
    }
}).end();

res.end();

---

我在做这样的事情：

client.putStream(stream, filepath, {
  'Content-Length': file.length,
  'Content-Type': 'application/octet-stream',
  'x-amz-acl': 'private'
}, function(err, res) {
  ...
});

app.post('/uploadAmazon', function(req, res) {  
var params = req.query;

var request = client.request("PUT", '/' + req.header('x-file-name') + '?partNumber=' + params.partNumber 
        + '&uploadId=' + params.uploadId, {
    'Content-Length' : req.header('Content-Length')
} );

req.on('data', function(data){
    request.write(data);
});


request.on('response', function(response) {
    console.log('Partial ' + params.partNumber + ' statusCode: ' + response.statusCode);
    if (response.statusCode== 200) {
        uploadMap[params.id].currentSize++;
        uploadMap[params.id].completeXmlArray[+(params.partNumber) - 1] = '<Part><PartNumber>' + params.partNumber + '</PartNumber><ETag>' + response.headers.etag + '</ETag></Part>' ; 

        if (uploadMap[params.id].currentSize == uploadMap[params.id].totalSize) {
            uploadMap[params.id].uploadId = params.uploadId;
            completeSend(uploadMap[params.id]);
        }
    }
}).end();

res.end();

app.post（'/uploadAmazon'，函数（req，res）{
var params=req.query；
var request=client.request（“PUT”、“/”+req.header（'x-file-name'）+”？partNumber='+params.partNumber
+“&uploadId=”+params.uploadId{
“内容长度”：请求标头（“内容长度”）
} );
请求开启（“数据”，功能（数据）{
请求。写入（数据）；
});
请求.on（'response'，函数（response）{
console.log（'Partial'+params.partNumber+'statusCode:'+response.statusCode）；
if（response.statusCode==200）{
uploadMap[params.id].currentSize++；
uploadMap[params.id].CompleteMlArray[+（params.partNumber）-1]=''+params.partNumber+''+response.headers.etag+''；
if（uploadMap[params.id].currentSize==uploadMap[params.id].totalSize）{
uploadMap[params.id].uploadId=params.uploadId；
completeSend（上传映射[params.id]）；
}
}
}).end（）；
res.end（）；

}))

假设我从帖子中收到了文件名、部件号和uploadId