Java AWS S3返回“；POST 400错误请求“；用于使用plupload进行文件上载
我正试图在plupload的帮助下直接上传到AWS S3。我正在使用Java AWS S3返回“；POST 400错误请求“；用于使用plupload进行文件上载,java,file-upload,amazon-s3,plupload,http-status-code-400,Java,File Upload,Amazon S3,Plupload,Http Status Code 400,我正试图在plupload的帮助下直接上传到AWS S3。我正在使用 https://github.com/moxiecode/plupload/blob/master/examples/jquery/s3.php and https://github.com/moxiecode/plupload/wiki/Upload-to-Amazon-S3 作为参考。 但我是用JSP和Servlet来实现的 当我试图上传一个文件时，它会显示“服务器响应状态为400-错误请求”。 这是我的档案： up
https://github.com/moxiecode/plupload/blob/master/examples/jquery/s3.php and
https://github.com/moxiecode/plupload/wiki/Upload-to-Amazon-S3
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
<title>test</title>
<link rel="stylesheet" type="text/css" href="plupload/jquery.plupload.queue/css/jquery.plupload.queue.css" type="text/css" media="screen" />
</head>
<body>
<div>
<div style="width: 750px; margin: 0px auto">
<div id="uploader">
<p> Flash, Silverlight, Gears, BrowserPlus HTML5 .</p>
</div>
<input type="button" value="Clear" id="clear"/>
</div>
</div>
<script type="text/javascript" src="js/jquery.min.js" ></script>
<script type="text/javascript" src="plupload/plupload.full.js"></script>
<script type="text/javascript" src="plupload/jquery.plupload.queue/jquery.plupload.queue.js"></script>
<!-- <script type="text/javascript" src="plupload/i18n/cn.js"></script> -->
<script >
/* Convert divs to queue widgets when the DOM is ready */
$(function(){
//ajax call to servlet for details
$.ajax({
type : "POST",
//dataType : "text" ,
url : "UploadCon2",
success : function(data)
{
plupload(data);
}
});
function plupload(data){
var flag_arr = data.split(" ");
var bucket = flag_arr[0] ;
var policy = flag_arr[1] ;
var signature = flag_arr[2] ;
var access_key_id = flag_arr[3];
alert(signature);
$("#uploader").pluploadQueue({
// General settings
runtimes : 'html5,gears,browserplus,silverlight,flash,html4',
unique_names : true,
// Flash settings
flash_swf_url : 'plupload/plupload.flash.swf',
// Silverlight settings
silverlight_xap_url : 'plupload/plupload.silverlight.xap',
url : 'http://'+bucket+'.s3.amazonaws.com/',
//url : 'http://s3.amazonaws.com/'+bucket+'/',
multipart: true,
multipart_params: {
'key': '${filename}', // use filename as a key
'Filename': '${filename}', // adding this to keep consistency across the runtimes
'acl': 'public-read',
'success_action_redirect' : 'http://localhost/' ,
'Content-Type': '',
'x-amz-credential' : 'MYACCESSKEY/20160211/us-east-1/s3/aws4_request',
'x-amz-algorithm':'AWS4-HMAC-SHA256',
'x-amz-date' : '20160211T000000Z',
'policy': policy,
'x-amz-signature': signature,
},
});
}
plupload();
$('#clear').click(function(){
plupload();
});
});
</script>
</body>
</html>
package controller;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.codec.binary.Hex;
import org.aspectj.weaver.patterns.ThrowsPattern;
import com.amazonaws.auth.policy.Policy;
import com.amazonaws.util.Base64;
import com.fasterxml.jackson.core.JsonEncoding;
/**
* Servlet implementation class UploadCon2
*/
@WebServlet("/UploadCon2")
@MultipartConfig
public class UploadCon2 extends HttpServlet {
private static final long serialVersionUID = 1L;
// private static final String JSON = null;
/**
* @see HttpServlet#HttpServlet()
*/
public UploadCon2() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String bucketName = "thehexa4";
String access_key_id = "myaccesskey";
String secret_access_key = "secretaccesskey";
String policy_doc =
"{\"expiration\": \"2016-12-30T12:00:00.000Z\"," +
"\"conditions\": [" +
"{\"bucket\": \"thehexa4\"}," +
"[\"starts-with\", \"$key\", \"\"]," +
"{\"acl\": \"public-read\"}," +
"{\"success_action_redirect\": \"http://localhost/\"}," +
"[\"starts-with\", \"$Content-Type\", \"\"]," +
"[\"content-length-range\", 0, 10485760]" +
"{\"x-amz-credential\": \"myaccesskey/20160211/us-east-1/s3/aws4_request\"}," +
"{\"x-amz-algorithm\": \"AWS4-HMAC-SHA256\"}," +
"{\"x-amz-date\": \"20160211T000000Z\" }" +
"]" +
"}";
System.out.print(policy_doc);
// Calculate policy and signature values from the given policy document and AWS credentials.
String policy = new String(Base64.encode(policy_doc.getBytes("UTF-8")), "ASCII");
//HMAC SHA 256 calculation
String signingkey = "";
String signature = "";
try {
signingkey = getSignatureKey(secret_access_key,"20160211" , "us-east-1", "s3").toString();
//signature = Base64.encodeAsString((HmacSHA256(signingkey, policy.getBytes())));
signature = Hex.encodeHexString(HmacSHA256(signingkey, policy.getBytes()));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
PrintWriter out = response.getWriter();
out.write(bucketName+" ");
out.write(policy+" ");
out.write(signature+" ");
out.write(access_key_id+" ");
}
private byte[] getSignatureKey(String key, String dateStamp, String regionName, String serviceName) throws Exception{
byte[] kSecret = ("AWS4" + key).getBytes("UTF8");
byte[] kDate = HmacSHA256(dateStamp, kSecret);
byte[] kRegion = HmacSHA256(regionName, kDate);
byte[] kService = HmacSHA256(serviceName, kRegion);
byte[] kSigning = HmacSHA256("aws4_request", kService);
return kSigning;
}
private byte[] HmacSHA256(String data, byte[] key) throws Exception {
// TODO Auto-generated method stub
String algorithm="HmacSHA256";
Mac mac = Mac.getInstance(algorithm);
mac.init(new SecretKeySpec(key, algorithm));
return mac.doFinal(data.getBytes("UTF8"));
}
}