我正在从JSON内容动态创建CSV文件,并在S3存储桶上传生成的CSV文件,而不是先在本地保存文件。
下面是我的代码片段,因为使用下面的代码将我的CSV文件上传到S3存储桶上,但它似乎没有正确的CSV格式。
var uploadCSVFileOnS3Bucket = function(next, csvFileContent,results) {
console.log("uploadCSVFileOnS3Bucket function started");
var bufferObject = new Buffer.from(JSON.stringify(csvFileContent));
var filePath = configurationHolder.config.s3UploadFilePath;
var s3 = new AWS.S3();
var params = {
Bucket: 'bucket_name'
Key: 's3UploadFilePath',
Body: bufferObject,
CacheControl:'public, max-age=86400'
}
s3.upload(params, function(err, data) {
if (err) {
console.log("Error at uploadCSVFileOnS3Bucket function",err);
next(err);
} else {
console.log("File uploaded Successfully");
next(null, filePath);
}
});
};
另外,我使用“json2csv”npm模块从JSON生成csv文件内容。
以下是代码:
var generateCSVFile = function(next,callback,csvFileContent) {
console.log("generateCSVFile function started",csvFileContent);
if(csvFileContent && csvFileContent.length>0) {
var fields = ['field1','field2','field3',........];
var csv = json2csv({ data: csvFileContent, fields: fields });
console.log('created',csv);
next(null,csv);
}
else {
next(null,[]);
}
}
请告诉我们上述代码出错的地方。
嗨,我再次尝试使用以下标题值,它对我有用。以下是代码:
var s3 = new AWS.S3();
var params = {
Bucket: bucketName,
Key: filePath,
Body: csvFileContent,
ContentType: 'application/octet-stream',
ContentDisposition: contentDisposition(filePath, {
type: 'inline'
}),
CacheControl: 'public, max-age=86400'
}
s3.putObject(params, function(err, data) {
if (err) {
console.log("Error at uploadCSVFileOnS3Bucket function", err);
next(err);
} else {
console.log("File uploaded Successfully");
next(null, filePath);
}
});
在你的参数中添加ContentDisposition:'attachment'。
否则你也可以阅读文件并上传到s3
fs.readFile(FILEPATH, function(err, file_buffer) {
var params = {
Bucket: //bucketname,
Key:key,
ContentDisposition: 'attachment',
Body: file_buffer
};
s3.upload(params, function(err, data) {
if (err) {
console.log("Error in upload");
callback(err, null)
}
if (data) {
console.log("Upload Success", data);
callback(null, data)
}
});
});