我正在尝试使用BodyPart来检索MIME多部分的内容
public class Weather extends AppCompatActivity {
// Get reference to all views in the layout
private TextView header;
private TextView dateText;
private Toolbar toolbar;
private ImageView CurrentWeatherIcon;
private TextView hummidity;
private TextView precipitation;
private TextView windspeed_textview;
private TextView current_temp;
private TextView weatherDesc;
private TextView city;
private WeatherInfo mservice;
LocationManager locationManager;
public Location location;
LocationListener listener;
static final int REQUEST_LOCATION = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.weather_layout);
CurrentWeatherIcon = findViewById(R.id.CurrentWeatherIcon);
header = findViewById(R.id.Header);
dateText = findViewById(R.id.dateTextfield);
toolbar = (Toolbar) findViewById(R.id.toolbar);
hummidity = findViewById(R.id.hummidityAnswer);
precipitation = findViewById(R.id.precipitation);
windspeed_textview = findViewById(R.id.windspeed_textview);
current_temp = findViewById(R.id.current_temp);
weatherDesc = findViewById(R.id.weatherdesc);
city = findViewById(R.id.city);
setSupportActionBar(toolbar);
setDate();
System.out.println("just before calling on the location");
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
listener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
System.out.println("inside the onlocation change method!!!");
if (location != null) {
Toast.makeText(Weather.this,"we are getting a location", Toast.LENGTH_SHORT).show();
setWeatherInformation(location);
} else {
System.out.println("location is not loading !!!!!!!!!!");
Toast.makeText(Weather.this, "Location services not available. Please turn on Location!", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
};
System.out.println("just before calling the getLocation Method");
getLocation();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case 10:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
getLocation();
}
break;
}
}
// public void getLocation() {
// if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// // TODO: Consider calling
// if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// requestPermissions(new String[]{
// Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.INTERNET
// }, 10);
// }
//
// }
// location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
//
// }
public void getLocation() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{
Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.INTERNET
}, 10);
}
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0 , 0, listener);
System.out.println("before the request single update method!!!!!!!!!");
// locationManager.requestSingleUpdate(LocationManager.GPS_PROVIDER,listener, null);
}
private void setWeatherInformation(Location location) {
mservice = Common.weatherService();
System.out.println("entering request body!");
mservice.getWeatherService(String.valueOf(location.getLatitude()), String.valueOf(location.getLongitude()),
"1cd35848343ba12498e43c2791367aec", "metric").enqueue(new Callback<WeatherObject>() {
@Override
public void onResponse(Call<WeatherObject> call, Response<WeatherObject> response) {
WeatherObject weather = response.body();
if(weather != null) {
setAllInfo(weather);
}
else{
System.out.println("the object weather is null");
Toast.makeText(Weather.this, "The response body is Null", Toast.LENGTH_SHORT).show();
// return;
}
}
@Override
public void onFailure(Call<WeatherObject> call, Throwable t) {
String message = t.getMessage().toString();
System.out.println("the cause !!!!!!!!!! " + message);
Toast.makeText(Weather.this, "something went wrong", Toast.LENGTH_SHORT).show();
}
});
}
private void setAllInfo(WeatherObject weather) {
StringBuilder builder = new StringBuilder("https://openweathermap.org/img/w/");
builder.append(weather.getWeather().get(0).getIcon()).append(".png");
Picasso.get().load(String.valueOf(builder)).into(CurrentWeatherIcon);
hummidity.setText(String.valueOf(weather.main.getHumidity()) +" % ");
precipitation.setText(String.valueOf(weather.main.getPressure())+ " mb");
windspeed_textview.setText(String.valueOf(weather.wind.getSpeed()) + " mph");
current_temp.setText(String.valueOf((int) getFahrenheit(weather.main.getTemp())) + "° F");
weatherDesc.setText(weather.weather.get(0).description);
city.setText(weather.getName());
}
private double getFahrenheit(double degreesKelvin) {
double f = (((degreesKelvin - 273) * (9.0 / 5)) + 32);
DecimalFormat format = new DecimalFormat("##");
format.format(f);
return f;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.toolbar_menu, menu);
return super.onCreateOptionsMenu(menu);
}
public void setDate() {
DateFormat df = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM);
Date date = new Date();
String date2 = df.format(date);
dateText.setText(date2);
}
}
}
但是，当我期望ByteArrayOutputStream baos = null;
MimeMultipart mp = new MimeMultipart(new ByteArrayDataSource(inputStream, contentType));
int count = mp.getCount();
baos = new ByteArrayOutputStream();
for (int i = 0; i < count; i++) {
BodyPart bodyPart = mp.getBodyPart(i);
Object content = bodyPart.getContent();
if (content instanceof InputStream) {
// process inputStream
}
bodyPart.writeTo(MIMEbaos);
String attachment = MIMEbaos.toString();
包含整个MIME多部分正文部分（包括内容类型）时，我只是期望一个内容（没有内容类型，边界等）时，bodyPart.getContent()将提供与整个MIME消息相同的InputStream，等
attachment来自
InputStream其中ByteArrayOutputStream baos = new ByteArrayOutputStream();
msg.writeTo(baos);
byte[] bytes = baos.toByteArray();
InputStream inputStream = new ByteArrayInputStream(bytes);
是msg的MIME类型为MTOM
答案 0 :(得分：0)
我结束了
ByteArrayOutputStream baos = null;
MimeMultipart mp = new MimeMultipart(new ByteArrayDataSource(inputStream, contentType));
int count = mp.getCount();
baos = new ByteArrayOutputStream();
for (int i = 0; i < count; i++) {
BodyPart bodyPart = mp.getBodyPart(i);
Object content = bodyPart.getContent();
String content = new String(read(bodyPart));
String partContentType = bodyPart.getContentType();
}
bodyPart.writeTo(MIMEbaos);
String attachment = MIMEbaos.toString();
private static byte[] read(BodyPart bodyPart) throws MessagingException, IOException
{
InputStream inputStream = bodyPart.getInputStream();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
int data = 0;
byte[] buffer = new byte[1024];
while ((data = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, data);
}
return outputStream.toByteArray();
}