How to get response from S3 getObject in Node js

Question

I am attempting to get data back from S3 and when I use getSignedURL, everything works:

aws.getSignedUrl('getObject', params, function(err, url){
    console.log(url); 
}); 

My params are:

var params = {
              Bucket: "test-aws-imagery", 
              Key: "TILES/Level4/A3_B3_C2/A5_B67_C59_Tiles.par"

I took the URL output to the console and pasted it into a web browser and it downloaded the file I needed. But when I put a breakpoint on one of the consoles. logs, my IDE (NetBeans) throws an error and refuses to show the value of data. 
How can I solve this? Can someone guide me on this?

Answer 1

The contents of your file will be located in the Body property, which you can see from your sample output.
The code will look like this:

const aws = require('aws-sdk');
const s3 = new aws.S3(); // Pass in opts to S3 if necessary

var getParams = {
    Bucket: 'abc', // your bucket name,
    Key: 'abc.txt' // path to the object you're looking for
}

s3.getObject(getParams, function(err, data) {
    // Handle any error and exit
    if (err)
        return err;

  // No error happened
  // Convert Body from a Buffer to a String
  let objectData = data.Body.toString('utf-8'); // Use the encoding necessary
});

You have to create a new buffer from the data. Body object but if you want you can use the sample above to achieve that.