javascript 将流解析为 Nodejs 中的对象
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Parse stream to object in Nodejs
提问by Samuel Ondrek
I am trying Get an object from Amazon S3 storagein Node.Js.
我正在尝试从Node.Js 中的Amazon S3 存储获取对象。
And this perfectly works when I am saving it to a file.
当我将它保存到文件时，这非常有效。
amazon.getObject = function () {
var options = {
BucketName : 'mybucket',
ObjectName : 'path/to/my.json',
ResponseContentType : 'application/json'
};
s3.GetObject(options, function(err, data) {
var fs = require('fs');
var fd = fs.openSync('helloaa.json', 'w+');
fs.writeSync(fd, data.Body, 0, data.Body.length, 0);
fs.closeSync(fd);
});
};
In. helloaa.json is:
在。helloaa.json 是：
{
"hello": 1,
"world": 3
}
But. I don't want to write data to file on my disk.
但。我不想将数据写入磁盘上的文件。
I want parse this json to object with JSON.parse();
我想用 JSON.parse() 解析这个 json 对象；
When I print object there with:
当我在那里打印对象时：
s3.GetObject(options, function(err, data) {
console.log(JSON.stringify(data));
});
In console is this:
在控制台是这样的：
{"StatusCode":200,"Headers":{"x-amz-id-2":"N1gDLPam+fDCLWd9Q2NI62hizH7eXAjg
61oLYOkanLoSlqUlDl6tqasbfdQXZ","x-amz-request-id":"C53957DAF635D3FD","date"
:"Mon, 31 Dec 2012 00:11:48 GMT","last-modified":"Sun, 30 Dec 2012 23:22:57 "etag":"\"8677a54c9b693bb6fc040ede8cc6a\"","accept-ranges":"bytes","co
ntent-type":"application/json","content-length":"176","server":"AmazonS3"},
"Body":{"0":123,"1":10,"2":32,"3":32,"4":32,"5":32,"6":34,"7":105,"8":100,"
9":34,"10":58,"11":32,"12":49,"13":44,"14":10,"15":32,"16":32,"17":32,"18":
What is it?
它是什么？
How can I parse it?
我该如何解析它？
Is it stream?
是流吗？
Can I save stream to object in NodeJs?
我可以将流保存到 NodeJs 中的对象吗？
回答by hunterloftis
Have you tried data.Body.toString()?
你试过data.Body.toString()吗？
回答by vt_todd
I had to parse the JSON after converting to string:
转换为字符串后，我必须解析 JSON：
var fileContents = data.Body.toString();
var json = JSON.parse(fileContents);
console.log(json);
