java - 从 java 向 REST 服务发送数据

Question

我已经在 C# 中实现了 REST 服务来上传图像：

[OperationContract]
[WebInvoke(Method = "PUT", UriTemplate = "add/{idAlbum}/{name}/image")]
void Add(string idAlbum, string name, Stream image);

我已成功将它与 C# 客户端一起使用：

byte[] image = lireFichier(@"C:\Users\user\Pictures\asap2.jpeg");
WebClient client = new WebClient();
client.Headers.Add("Content-Type", "image/jpeg");
var results = client.UploadData("http://localhost:1767/ImageService.svc/add/1/REST/image", "PUT", image);

所以现在我想将它与这样的java客户端（android）一起使用（不工作）：

HttpURLConnection conn = ( HttpURLConnection ) new URL( "http://localhost:1767/ImageService.svc/add/1/RESTjava/image" ).openConnection();  

conn.setRequestMethod("PUT");

conn.setDoOutput( true );
conn.connect(); 

OutputStream out = conn.getOutputStream();  

Bitmap img = ((BitmapDrawable)getResources().getDrawable(R.drawable.entourage)).getBitmap();
ByteArrayOutputStream bao = new ByteArrayOutputStream();
img.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte[] data = bao.toByteArray();
out.write(data);

我没有任何错误，但这没有用。没有例外。

 06-05 14:11:57.736: I/ASAP PICS(746): onPreExecute
 06-05 14:11:57.745: I/ASAP PICS(746): doInBackground
 06-05 14:11:57.816: I/System.out(746): 405
 06-05 14:44:26.245: D/dalvikvm(971): GC freed 238 objects / 332400 bytes in 34ms
 06-05 14:11:57.905: I/ASAP PICS(746): onPostExecute

Answer 1

我找到了解决方案！

首先，我将 REST 服务放在 POST 方法中：

[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "add/{idAlbum}/{name}")]
void Add(string idAlbum, string name, Stream image);

最后是java客户端：

HttpPost post = new HttpPost("http://localhost:1767/ImageService.svc/add/1/RESTjava");

Bitmap img = ((BitmapDrawable)getResources().getDrawable(R.drawable.entourage)).getBitmap();
ByteArrayOutputStream bao = new ByteArrayOutputStream();
img.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte[] data = bao.toByteArray();

ByteArrayEntity bimg = new ByteArrayEntity(data);
post.setEntity(bimg);
new DefaultHttpClient().execute(post);

Answer 2

I/System.out(746): 405

HTTP 405 = Method not allowed.

I guess you have to add authentication?

Answer 3

你应该flush在你的OutputStream:上做out.flush();。这就是答案。