我们正在开发一个谷歌玻璃应用程序项目，其中一个目标是让玻璃使用相机将照片发送到我们已经运行的python服务器。到目前为止，我们看到谷歌玻璃代码成功尝试发送图片（从相机中拍摄），但服务器一直拒绝图片。我们知道图片需要采用某种格式才能让服务器接受它。我们有python代码应该将图片发送到服务器，但我们需要java等效的应用程序。 http://172.26.50.107是我们尝试过的服务器＆＃34; post＆＃34;图像到。
发送图像的python代码如下：
import requests
r = requests.post('http://172.26.50.107/push', files={'photo': open('coin.jpg', 'rb')})
到目前为止，我们在Android Studio的MainActivity中为应用程序提供的现有Java代码的相关部分如下所示：
private static final int TAKE_PICTURE_REQUEST = 1;
private void takePicture() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, TAKE_PICTURE_REQUEST);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == TAKE_PICTURE_REQUEST && resultCode == RESULT_OK) {
String thumbnailPath = data.getStringExtra(Intents.EXTRA_THUMBNAIL_FILE_PATH);
String picturePath = data.getStringExtra(Intents.EXTRA_PICTURE_FILE_PATH);
processPictureWhenReady(picturePath);
// TODO: Show the thumbnail to the user while the full picture is being
// processed.
}
super.onActivityResult(requestCode, resultCode, data);
}
private void sendImageServer(final String picturePath)
{
String url = "http://172.26.50.107/pushimg";
File file = new File(
// Environment.getExternalStorageDirectory().getAbsolutePath(),
picturePath);
Log.v("info", url);
Log.v("info", picturePath);
HttpClient httpclient = new DefaultHttpClient();
Log.v("info", "data 0");
HttpPost httppost = new HttpPost(url);
try {
Log.v("info", "data 1");
InputStreamEntity reqEntity = new InputStreamEntity(
new FileInputStream(file), -1);
Log.v("info", "data 2");
reqEntity.setContentType("binary/octet-stream");
reqEntity.setChunked(true); // Send in multiple parts if needed
httppost.setEntity(reqEntity);
//httppost.addHeader("Content-length", "0");
Log.v("info", "data 3");
HttpResponse response = httpclient.execute(httppost);
Log.v("info", response.getStatusLine().toString());
Log.v("info", "data DONE");
//Do something with response...
} catch (Exception e) {
// show error
Log.v("info", "ERROR");
}
}
private void processPictureWhenReady(final String picturePath) {
final File pictureFile = new File(picturePath);
if (pictureFile.exists()) {
// The picture is ready; process it.
Log.v("info", "-------------------------------------------");
Log.v("info", picturePath);
sendImageServer(picturePath);
} else {
// The file does not exist yet. Before starting the file observer, you
// can update your UI to let the user know that the application is
// waiting for the picture (for example, by displaying the thumbnail
// image and a progress indicator).
final File parentDirectory = pictureFile.getParentFile();
FileObserver observer = new FileObserver(parentDirectory.getPath(),
FileObserver.CLOSE_WRITE | FileObserver.MOVED_TO) {
// Protect against additional pending events after CLOSE_WRITE
// or MOVED_TO is handled.
private boolean isFileWritten;
@Override
public void onEvent(int event, String path) {
if (!isFileWritten) {
// For safety, make sure that the file that was created in
// the directory is actually the one that we're expecting.
File affectedFile = new File(parentDirectory, path);
isFileWritten = affectedFile.equals(pictureFile);
if (isFileWritten) {
stopWatching();
// Now that the file is ready, recursively call
// processPictureWhenReady again (on the UI thread).
runOnUiThread(new Runnable() {
@Override
public void run() {
processPictureWhenReady(picturePath);
}
});
}
}
}
};
observer.startWatching();
}
}
}
我们知道我们需要在java中使用等效的python代码来实现图像传输，但我们不知道应该如何，在哪里以及我们应该添加到现有的Java代码中。我们仍然是编码的初学者，因此非常感谢详细解释。