我正在开发一款Android应用，用户可以使用图片创建帖子。图像正在上传到Amazon S3。因此，每个用户如何上传图像，我不使用亚马逊AWS SDK，因为它的方法需要密钥。我尝试使用HTTP put请求上传图像。我向后端发送第一个请求，它向我发送用于上传图像的签名和其他参数。不幸的是，亚马逊的第二个回复包含错误。
这是第一个请求和回复：
POST /upload HTTP/1.1
Content-Type: application/x-www-form-urlencoded;charset=UTF-8
Content-Length: 53
Host: wrum-wrum.ru
Connection: Keep-Alive
User-Agent: Apache-HttpClient/UNAVAILABLE (java 1.4)
file_name=1439474973659_crp.jpg&file_type=image%2Fjpg
HTTP/1.1 200 OK
Server: nginx
Date: Thu, 13 Aug 2015 14:09:46 GMT
Transfer-Encoding: chunked
Connection: keep-alive
Keep-Alive: timeout=60
Vary: X-HTTP-Method-Override
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-Download-Options: noopen
set-cookie: connect.sid=s%3AY0SlTYzkavxu34-pcuMIEGDPuRSDlKuM.%2FTRySP3UVyIIatnqLSGE8%2Bx%2BP239TL9rjPQxjVRbzD8; Path=/; HttpOnly
11b
{"signed_request":"https://babadoo.s3.amazonaws.com/1439474973659_crp.jpg?AWSAccessKeyId=AKIAJMXM46BCWD5WDGTQ&Content-Type=image%2Fjpg&Expires=1439475046&Signature=ZsqF%2BaCCeZmTTPkiTWLG5Ckix1U%3D&x-amz-acl=public-read","url":"https://babadoo.s3.amazonaws.com/1439474973659_crp.jpg"}
0
以下是第二个请求和回复：
PUT /1439474973659_crp.jpg?AWSAccessKeyId=AKIAJMXM46BCWD5WDGTQ&Content-Type=image%2Fjpg&Expires=1439475046&Signature=ZsqF%2BaCCeZmTTPkiTWLG5Ckix1U%3D&x-amz-acl=public-read HTTP/1.1
Content-Type: image/jpeg
User-Agent: Apache-HttpClient/UNAVALIABLE (java 1.4)
Content-Length: 1242599
Host: babadoo.s3.amazonaws.com
Connection: Keep-Alive
Expect: 100-continue
HTTP/1.1 403 Forbidden
x-amz-request-id: 36D4D3E461AF0850
x-amz-id-2: +/LpGcZD6ZMdbZDq31Zt5ablP5CZIbBElaD1pm6of7MrndAwXe6ortO3uJNVgn8sGQ03o2waie0=
Content-Type: application/xml
Transfer-Encoding: chunked
Date: Thu, 13 Aug 2015 14:10:00 GMT
Connection: close
Server: AmazonS3
357
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message><AWSAccessKeyId>AKIAJMXM46BCWD5WDGTQ</AWSAccessKeyId><StringToSign>PUT
image/jpeg
1439475046
x-amz-acl:public-read
/babadoo/1439474973659_crp.jpg</StringToSign><SignatureProvided>ZsqF+aCCeZmTTPkiTWLG5Ckix1U=</SignatureProvided><StringToSignBytes>50 55 54 0a 0a 69 6d 61 67 65 2f 6a 70 65 67 0a 31 34 33 39 34 37 35 30 34 36 0a 78 2d 61 6d 7a 2d 61 63 6c 3a 70 75 62 6c 69 63 2d 72 65 61 64 0a 2f 62 61 62 61 64 6f 6f 2f 31 34 33 39 34 37 34 39 37 33 36 35 39 5f 63 72 70 2e 6a 70 67</StringToSignBytes><RequestId>36D4D3E461AF0850</RequestId><HostId>+/LpGcZD6ZMdbZDq31Zt5ablP5CZIbBElaD1pm6of7MrndAwXe6ortO3uJNVgn8sGQ03o2waie0=</HostId></Error>
0
代码：
public String uploadPhoto(final File file) {
Runnable runnable = new Runnable() {
public void run() {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(uploadURL);
httppost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
String result = null;
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("file_name", file.getName()));
nameValuePairs.add(new BasicNameValuePair("file_type", "image/jpg"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
HttpEntity httpEntity = response.getEntity();
result = EntityUtils.toString(httpEntity);
int i = 1;
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
if (result != null) {
int putURLpos = result.indexOf(parseStringFragment);
if (putURLpos != -1) {
putURL = result.substring(putURLpos + parseStringFragment.length(),
result.indexOf("\"", putURLpos + parseStringFragment.length()));
try {
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(null, null);
SSLSocketFactory sf = (new MySSLSocketFactory(trustStore));
sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
BasicHttpParams httpParams = new BasicHttpParams();
HttpProtocolParams.setVersion(httpParams, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(httpParams, HTTP.DEFAULT_CONTENT_CHARSET);
HttpProtocolParams.setUseExpectContinue(httpParams, true);
SchemeRegistry sr = new SchemeRegistry();
sr.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
sr.register(new Scheme("https", sf, 443));
ThreadSafeClientConnManager ccManager = new ThreadSafeClientConnManager(httpParams, sr);
HttpClient client = new DefaultHttpClient(ccManager, httpParams);
URI uri = new URI(putURL);
HttpPut put = new HttpPut(uri);
put.setHeader("Content-Type", "image/jpeg");
put.setHeader("User-Agent", "Apache-HttpClient/UNAVALIABLE (java 1.4)");
EntityBuilder eb = EntityBuilder.create();
eb.setFile(file);
put.setEntity(eb.build());
HttpResponse response = client.execute(put);
HttpEntity resEntity = response.getEntity();
String res = EntityUtils.toString(resEntity);
int i = 1;
i++;
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
};
Thread thread = new Thread(runnable);
thread.start();
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
return uploadedPhotoURL;
}
答案 0 :(得分：0)
所以我找到了解决方案。这是我的错，我发了
nameValuePairs.add(new BasicNameValuePair("file_type", "image/jpg"));
表示第一个请求，
Content-Type: image/jpeg
在第二个请求中。