Javascript Can';尽管上传成功,但在aws s3中找不到图像
我正在使用文件上传模块Javascript Can';尽管上传成功,但在aws s3中找不到图像,javascript,angularjs,node.js,amazon-s3,Javascript,Angularjs,Node.js,Amazon S3,我正在使用文件上传模块 <?xml version="1.0" encoding="UTF-8"?> <CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"> <CORSRule> <AllowedOrigin>*</AllowedOrigin> <AllowedMethod>GET</AllowedM
<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
<AllowedOrigin>*</AllowedOrigin>
<AllowedMethod>GET</AllowedMethod>
<AllowedMethod>DELETE</AllowedMethod>
<AllowedMethod>POST</AllowedMethod>
<AllowedMethod>PUT</AllowedMethod>
<MaxAgeSeconds>3000</MaxAgeSeconds>
<AllowedHeader>*</AllowedHeader>
<AllowedHeader>Authorization</AllowedHeader>
</CORSRule>
</CORSConfiguration>
和我的节点后端
app.post('/signing', function(req, res) {
var request = req.body;
var fileName = request.filename
var s3Url = 'https://' + aws.bucket + '.s3' + '.amazonaws.com/';
var extension = fileName.substring(fileName.lastIndexOf('.'));
var today = new Date();
var path = '/' + today.getFullYear() + '/' + today.getMonth() + '/' + today.getDate() + '/' + uuid.v4() + extension;
var readType = 'private';
var expiration = moment().add(5, 'm').toDate(); //15 minutes
var s3Policy = {
'expiration': expiration,
'conditions': [{
'bucket': aws.bucket
},
['starts-with', '$key', path],
{
'acl': readType
},
{
'success_action_status': '201'
},
['starts-with', '$Content-Type', request.type],
['content-length-range', 2048, 10485760], //min and max
]
};
var stringPolicy = JSON.stringify(s3Policy);
var base64Policy = new Buffer(stringPolicy, 'utf-8').toString('base64');
// sign policy
var signature = crypto.createHmac('sha1', aws.secret)
.update(new Buffer(base64Policy, 'utf-8')).digest('base64');
var credentials = {
url: s3Url,
fields: {
key: path,
AWSAccessKeyId: aws.key,
acl: readType,
policy: base64Policy,
signature: signature,
'Content-Type': request.type,
success_action_status: 201
}
};
res.jsonp(credentials);
});
当我上传时,我的请求得到了肯定的回应。但在我的桶里却找不到这个图像。我想把我的文件名添加到s3Url中。像
var s3Url = 'https://' + aws.bucket + '.s3' + '.amazonaws.com/' + fileName;
它失败,因此返回禁止的错误。我注意到上面的
path
变量不应该将文件名附加到s3Url中。我尽我所能把我的文件归档;我不在桶里。请注意,我的错误是什么,阻止了文件的上传或显示?如果您通过表单提交文件,那么下面的代码可能会对您有所帮助
exports.uploadImageToS3Bucket = function(res, file, folder, callback) {
var fs = require('node-fs');
var AWS = require('aws-sdk');
var filename = file.name; // actual filename of file
var path = file.path; //will be put into a temp directory
var mimeType = file.type;
var accessKeyId = config.get('s3BucketCredentials.accessKeyId');
var secretAccessKeyId = config.get('s3BucketCredentials.secretAccessKey');
var bucketName = config.get('s3BucketCredentials.bucket');
var timestamp = new Date().getTime().toString();
var str = '';
var chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
var size = chars.length;
for (var i = 0; i < 5; i++) {
var randomnumber = Math.floor(Math.random() * size);
str = chars[randomnumber] + str;
}
filename = filename.replace(/\s/g, '');
var fileNewName = str + timestamp + "-" + filename;
fs.readFile(path, function(error, file_buffer) {
if (error) {
responses.imageUploadError(res,{});
}
AWS.config.update({accessKeyId: accessKeyId, secretAccessKey: secretAccessKeyId});
var s3bucket = new AWS.S3();
var params = {Bucket: bucketName, Key: folder + '/' + fileNewName, Body: file_buffer, ACL: 'public-read', ContentType: mimeType};
s3bucket.putObject(params, function(err, data) {
if (err) {
console.log(err);
responses.imageUploadError(res,{});
} else {
return callback(fileNewName);
}
});
});
};
exports.uploadImageToS3Bucket=函数(res、文件、文件夹、回调){
var fs=require('node-fs');
var AWS=要求('AWS-sdk');
var filename=file.name;//文件的实际文件名
var path=file.path;//将被放入临时目录中
var mimeType=file.type;
var accessKeyId=config.get('s3BucketCredentials.accessKeyId');
var secretAccessKeyId=config.get('s3BucketCredentials.secretAccessKey');
var bucketName=config.get('s3BucketCredentials.bucket');
var timestamp=new Date().getTime().toString();
var-str='';
var chars=“abcdefghijklmnopqrstuvxyzabefghijklmnopqrstuvxyz012456789”;
变量大小=字符长度;
对于(变量i=0;i<5;i++){
var randomnumber=Math.floor(Math.random()*大小);
str=字符[随机数]+str;
}
filename=filename.replace(/\s/g');
var fileNewName=str+时间戳+“-”+文件名;
fs.readFile(路径、函数(错误、文件缓冲区){
如果(错误){
imageUploadError(res,{});
}
update({accessKeyId:accessKeyId,secretAccessKey:secretAccessKeyId});
var s3bucket=new AWS.S3();
var params={Bucket:bucketName,Key:folder+'/'+fileNewName,Body:file_buffer,ACL:'public read',ContentType:mimeType};
s3bucket.putObject(参数、函数(错误、数据){
如果(错误){
控制台日志(err);
imageUploadError(res,{});
}否则{
返回回调(fileNewName);
}
});
});
};
但我建议您使用base64encoder,因为您可以直接从节点服务器将对象放入s3中,并将内容类型设置为文件类型/扩展名。
在大多数情况下,首选Base64方法,因为它不需要您通过http发送文件。如果您是通过表单提交文件,则以下代码可能会对您有所帮助
exports.uploadImageToS3Bucket = function(res, file, folder, callback) {
var fs = require('node-fs');
var AWS = require('aws-sdk');
var filename = file.name; // actual filename of file
var path = file.path; //will be put into a temp directory
var mimeType = file.type;
var accessKeyId = config.get('s3BucketCredentials.accessKeyId');
var secretAccessKeyId = config.get('s3BucketCredentials.secretAccessKey');
var bucketName = config.get('s3BucketCredentials.bucket');
var timestamp = new Date().getTime().toString();
var str = '';
var chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
var size = chars.length;
for (var i = 0; i < 5; i++) {
var randomnumber = Math.floor(Math.random() * size);
str = chars[randomnumber] + str;
}
filename = filename.replace(/\s/g, '');
var fileNewName = str + timestamp + "-" + filename;
fs.readFile(path, function(error, file_buffer) {
if (error) {
responses.imageUploadError(res,{});
}
AWS.config.update({accessKeyId: accessKeyId, secretAccessKey: secretAccessKeyId});
var s3bucket = new AWS.S3();
var params = {Bucket: bucketName, Key: folder + '/' + fileNewName, Body: file_buffer, ACL: 'public-read', ContentType: mimeType};
s3bucket.putObject(params, function(err, data) {
if (err) {
console.log(err);
responses.imageUploadError(res,{});
} else {
return callback(fileNewName);
}
});
});
};
exports.uploadImageToS3Bucket=函数(res、文件、文件夹、回调){
var fs=require('node-fs');
var AWS=要求('AWS-sdk');
var filename=file.name;//文件的实际文件名
var path=file.path;//将被放入临时目录中
var mimeType=file.type;
var accessKeyId=config.get('s3BucketCredentials.accessKeyId');
var secretAccessKeyId=config.get('s3BucketCredentials.secretAccessKey');
var bucketName=config.get('s3BucketCredentials.bucket');
var timestamp=new Date().getTime().toString();
var-str='';
var chars=“abcdefghijklmnopqrstuvxyzabefghijklmnopqrstuvxyz012456789”;
变量大小=字符长度;
对于(变量i=0;i<5;i++){
var randomnumber=Math.floor(Math.random()*大小);
str=字符[随机数]+str;
}
filename=filename.replace(/\s/g');
var fileNewName=str+时间戳+“-”+文件名;
fs.readFile(路径、函数(错误、文件缓冲区){
如果(错误){
imageUploadError(res,{});
}
update({accessKeyId:accessKeyId,secretAccessKey:secretAccessKeyId});
var s3bucket=new AWS.S3();
var params={Bucket:bucketName,Key:folder+'/'+fileNewName,Body:file_buffer,ACL:'public read',ContentType:mimeType};
s3bucket.putObject(参数、函数(错误、数据){
如果(错误){
控制台日志(err);
imageUploadError(res,{});
}否则{
返回回调(fileNewName);
}
});
});
};
但我建议您使用base64encoder,因为您可以直接从节点服务器将对象放入s3中,并将内容类型设置为文件类型/扩展名。
在大多数情况下,首选这种Base64方法,因为它不需要您通过http发送文件