我正在尝试将文件上传到我的Amazon S3 Bucket. S3和亚马逊成立.
这是亚马逊的错误消息：
这是亚马逊的错误消息：
Conflicting query string parameters: acl,policy
策略和签名被编码,对于Node.js使用Crypto.js
var crypto=Npm.require("crypto");
我正在尝试使用Meteor HTTP.post方法构建POST请求.这也可能是错误的.
var BucketName="mybucket";
var AWSAccessKeyId="MY_ACCES_KEY";
var AWSSecretKey="MY_SECRET_KEY";
//create policy
var POLICY_JSON={
"expiration": "2009-01-01T00:00:00Z","conditions": [
{"bucket": BucketName},["starts-with","$key","uploads/"],{"acl": 'public-read'},"$Content-Type",""],["content-length-range",1048576],]
}
var policyBase64=encodePolicy(POLICY_JSON);
//create signature
var SIGNATURE = encodeSignature(policyBase64,AWSSecretKey);
console.log('signature: ',SIGNATURE);
这是我与Meteor一起使用的POST请求：
//Send data----------
var options={
"params":{
"key":file.name,'AWSAccessKeyId':AWSAccessKeyId,'acl':'public-read','policy':policyBase64,'signature':SIGNATURE,'Content-Type':file.type,'file':file,"enctype":"multipart/form-data",}
}
HTTP.call('POST','https://'+BucketName+'.s3.amazonaws.com/',options,function(error,result){
if(error){
console.log("and HTTP ERROR:",error);
}else{
console.log("result:",result);
}
});
她正在编码政策和签名：
encodePolicy=function(jsonPolicy){
// stringify the policy,store it in a NodeJS Buffer object
var buffer=new Buffer(JSON.stringify(jsonPolicy));
// convert it to base64
var policy=buffer.toString("base64");
// replace "/" and "+" so that it is URL-safe.
return policy.replace(/\//g,"_").replace(/\+/g,"-");
}
encodeSignature=function(policy,secret){
var hmac=crypto.createHmac("sha256",secret);
hmac.update(policy);
return hmac.digest("hex");
}
A不知道发生了什么. POST方法或加密可能已经有问题,因为我不太了解这些方法.如果有人可以指出我正确的方向,编码或发送POST请求到AmazonS3正确,它可以帮助很多.
(我不喜欢使用filepicker.io,因为我不想强制客户端在那里注册.)
提前致谢！！！
解决方法
直接上传到S3可以使用
slingshot包：
meteor add edgee:slingshot
在服务器端声明您的指令：
Slingshot.createDirective("myFileUploads",Slingshot.S3Storage,{
bucket: "mybucket",allowedFileTypes: ["image/png","image/jpeg","image/gif"],acl: "public-read",authorize: function () {
//You can add user restrictions here
return true;
},key: function (file) {
return file.name;
}
});
他们只是上传它：
var uploader = new Slingshot.Upload("myFileUploads");
uploader.send(document.getElementById('input').files[0],function (error,url) {
Meteor.users.update(Meteor.userId(),{$push: {"profile.files": url}});
});
