我正在尝试更改HTTPClient已弃用的代码，但我在setEntity上遇到错误，因为它的dapricated，我不知道如何通过新的httpConnectionUrl放置MultipartEntityBuilder。 我旧的弃用代码snippt
try {
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(imagePostUrl);
for (String fileName : fileNameArrayList) {
File file = new File(fileName);
// 1st
int quality = GeneralUtil.getQualityOfImage(file);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
if (quality <= 25) { // This means image file size is in MB's so we need to avoide out of memory issues.
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
try {
bitmap = BitmapFactory.decodeFile(file.getPath(), options);
} catch (OutOfMemoryError E) {
System.gc();
bitmap = GeneralUtil.decodeFile(file);
}
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
} else {
try {
bitmap = BitmapFactory.decodeFile(file.getPath());
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
} catch (OutOfMemoryError E) {
System.gc();
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
bitmap = BitmapFactory.decodeFile(file.getPath(), options);
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
} catch (OutOfMemoryError ex) {
bitmap = GeneralUtil.decodeFile(file);
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
throw new Exception();
}
}
}
byte[] data = bos.toByteArray();
String timeStamp = GeneralUtil.generateTimeStamp();
ByteArrayBody bin = new ByteArrayBody(data, myMobileNo + "_" + userName + "_" + timeStamp + ".jpg");
MultipartEntityBuilder multiPartEntityBuilder = MultipartEntityBuilder.create();
multiPartEntityBuilder.addPart("uploadedfile1", bin);
multiPartEntityBuilder.addPart("inviteId", new StringBody(inviteIdArrayList.get(0).toString(), Charset.forName("UTF-8")));
post.setEntity(multiPartEntityBuilder.build());
HttpResponse httpResponse = null;
httpResponse = client.execute(post);
InputStream inputStream = null;
inputStream = httpResponse.getEntity().getContent();
if (inputStream != null)
result.add(convertInputStreamToString(inputStream));
else
result.add("Did not work!");
}
我的新工作代码snippt
try {
HttpURLConnection httpcon = (HttpURLConnection) ((new URL(imagePostUrl).openConnection()));
httpcon.setDoOutput(true);
for (String fileName : fileNameArrayList) {
File file = new File(fileName);
int quality = GeneralUtil.getQualityOfImage(file);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
if (quality <= 25) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
try {
bitmap = BitmapFactory.decodeFile(file.getPath(), options);
} catch (OutOfMemoryError E) {
System.gc();
bitmap = GeneralUtil.decodeFile(file);
}
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
} else {
try {
bitmap = BitmapFactory.decodeFile(file.getPath());
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
} catch (OutOfMemoryError E) {
System.gc();
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
bitmap = BitmapFactory.decodeFile(file.getPath(), options);
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
} catch (OutOfMemoryError ex) {
bitmap = GeneralUtil.decodeFile(file);
bitmap.compress(CompressFormat.JPEG, quality, bos);
bitmap.recycle();
bitmap = null;
throw new Exception();
}
}
}
byte[] data = bos.toByteArray();
String timeStamp = GeneralUtil.generateTimeStamp();
ByteArrayBody bin = new ByteArrayBody(data, myMobileNo + "_" + userName + "_" + timeStamp + ".jpg");
MultipartEntityBuilder multiPartEntityBuilder = MultipartEntityBuilder.create();
multiPartEntityBuilder.addPart("uploadedfile1", bin);
multiPartEntityBuilder.addPart("inviteId", new StringBody(inviteIdArrayList.get(0).toString(), Charset.forName("UTF-8")));
httpcon.setEntity(multiPartEntityBuilder.build()); **error**
// Execute POST request to the given URL
// HttpResponse httpResponse = null;
// httpResponse = client.execute(post);
httpcon.setRequestMethod("POST");
httpcon.connect();
答案 0 :(得分：2)
以下是我建议的替代解决方案：
首先，您可以参考以下某些库：Volley，Retrofit ...
如果您想使用Volley，可以参考以下链接：
我的示例代码与上面的第一个链接相关
<强> MultipartActivity.java：
public class MultipartActivity extends Activity {
private final Context context = this;
private final String twoHyphens = "--";
private final String lineEnd = "\r\n";
private final String boundary = "apiclient-" + System.currentTimeMillis();
private final String mimeType = "multipart/form-data;boundary=" + boundary;
private byte[] multipartBody;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_multipart);
byte[] fileData1 = getFileDataFromDrawable(context, R.drawable.ic_action_android);
byte[] fileData2 = getFileDataFromDrawable(context, R.drawable.ic_action_book);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(bos);
try {
// the first file
buildPart(dos, fileData1, "ic_action_android.png");
// the second file
buildPart(dos, fileData2, "ic_action_book.png");
// send multipart form data necesssary after file data
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// pass to multipart body
multipartBody = bos.toByteArray();
} catch (IOException e) {
e.printStackTrace();
}
String url = "http://192.168.1.100/api/postfile";
MultipartRequest multipartRequest = new MultipartRequest(url, null, mimeType, multipartBody, new Response.Listener<NetworkResponse>() {
@Override
public void onResponse(NetworkResponse response) {
Toast.makeText(context, "Upload successfully!", Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context, "Upload failed!\r\n" + error.toString(), Toast.LENGTH_SHORT).show();
}
});
VolleySingleton.getInstance(context).addToRequestQueue(multipartRequest);
}
...
private void buildPart(DataOutputStream dataOutputStream, byte[] fileData, String fileName) throws IOException {
dataOutputStream.writeBytes(twoHyphens + boundary + lineEnd);
dataOutputStream.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\"; filename=\""
+ fileName + "\"" + lineEnd);
dataOutputStream.writeBytes(lineEnd);
ByteArrayInputStream fileInputStream = new ByteArrayInputStream(fileData);
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 1024 * 1024;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[] buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dataOutputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
dataOutputStream.writeBytes(lineEnd);
}
private byte[] getFileDataFromDrawable(Context context, int id) {
Drawable drawable = ContextCompat.getDrawable(context, id);
Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 0, byteArrayOutputStream);
return byteArrayOutputStream.toByteArray();
}
}
MultipartRequest.java：
class MultipartRequest extends Request<NetworkResponse> {
private final Response.Listener<NetworkResponse> mListener;
private final Response.ErrorListener mErrorListener;
private final Map<String, String> mHeaders;
private final String mMimeType;
private final byte[] mMultipartBody;
public MultipartRequest(String url, Map<String, String> headers, String mimeType, byte[] multipartBody, Response.Listener<NetworkResponse> listener, Response.ErrorListener errorListener) {
super(Method.POST, url, errorListener);
this.mListener = listener;
this.mErrorListener = errorListener;
this.mHeaders = headers;
this.mMimeType = mimeType;
this.mMultipartBody = multipartBody;
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
return (mHeaders != null) ? mHeaders : super.getHeaders();
}
@Override
public String getBodyContentType() {
return mMimeType;
}
@Override
public byte[] getBody() throws AuthFailureError {
return mMultipartBody;
}
@Override
protected Response<NetworkResponse> parseNetworkResponse(NetworkResponse response) {
try {
return Response.success(
response,
HttpHeaderParser.parseCacheHeaders(response));
} catch (Exception e) {
return Response.error(new ParseError(e));
}
}
@Override
protected void deliverResponse(NetworkResponse response) {
mListener.onResponse(response);
}
@Override
public void deliverError(VolleyError error) {
mErrorListener.onErrorResponse(error);
}
}
当然，您可以在SO中找到更多信息。
希望这有帮助！
答案 1 :(得分：1)
在经过大量的头部刮擦和拔毛之后，我能够将我的Multipart Form Data上传内容工作。 下面的类用于多部分文件上传，它可以工作。 注意：这不是一个问题，只是对操作的回答。
public class WebConnector {
String boundary = "-------------" + System.currentTimeMillis();
private static final String LINE_FEED = "\r\n";
private static final String TWO_HYPHENS = "--";
private StringBuilder url;
private String protocol;
private HashMap<String, String> params;
private JSONObject postData;
private List<String> fileList;
private int count = 0;
private DataOutputStream dos;
public WebConnector(StringBuilder url, String protocol,
HashMap<String, String> params, JSONObject postData) {
super();
this.url = url;
this.protocol = protocol;
this.params = params;
this.postData = postData;
createServiceUrl();
}
public WebConnector(StringBuilder url, String protocol,
HashMap<String, String> params, JSONObject postData, List<String> fileList) {
super();
this.url = url;
this.protocol = protocol;
this.params = params;
this.postData = postData;
this.fileList = fileList;
createServiceUrl();
}
public String connectToMULTIPART_POST_service(String postName) {
System.out.println(">>>>>>>>>url : " + url);
StringBuilder stringBuilder = new StringBuilder();
String strResponse = "";
InputStream inputStream = null;
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) new URL(url.toString()).openConnection();
urlConnection.setRequestProperty("Accept", "application/json");
urlConnection.setRequestProperty("Connection", "close");
urlConnection.setRequestProperty("User-Agent", "Mozilla/5.0 ( compatible ) ");
urlConnection.setRequestProperty("Authorization", "Bearer " + Config.getConfigInstance().getAccessToken());
urlConnection.setRequestProperty("Content-type", "multipart/form-data; boundary=" + boundary);
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setUseCaches(false);
urlConnection.setChunkedStreamingMode(1024);
urlConnection.setRequestMethod("POST");
dos = new DataOutputStream(urlConnection.getOutputStream());
Iterator<String> keys = postData.keys();
while (keys.hasNext()) {
try {
String id = String.valueOf(keys.next());
addFormField(id, "" + postData.get(id));
System.out.println(id + " : " + postData.get(id));
} catch (JSONException e) {
e.printStackTrace();
}
}
try {
dos.writeBytes(LINE_FEED);
dos.flush();
dos.close();
} catch (IOException e) {
e.printStackTrace();
}
if (fileList != null && fileList.size() > 0 && !fileList.isEmpty()) {
for (int i = 0; i < fileList.size(); i++) {
File file = new File(fileList.get(i));
if (file != null) ;
addFilePart("photos[" + i + "][image]", file);
}
}
// forming th java.net.URL object
build();
urlConnection.connect();
int statusCode = 0;
try {
urlConnection.connect();
statusCode = urlConnection.getResponseCode();
} catch (EOFException e1) {
if (count < 5) {
urlConnection.disconnect();
count++;
String temp = connectToMULTIPART_POST_service(postName);
if (temp != null && !temp.equals("")) {
return temp;
}
}
} catch (IOException e) {
e.printStackTrace();
}
// 200 represents HTTP OK
if (statusCode == HttpURLConnection.HTTP_OK) {
inputStream = new BufferedInputStream(urlConnection.getInputStream());
strResponse = readStream(inputStream);
} else {
System.out.println(urlConnection.getResponseMessage());
inputStream = new BufferedInputStream(urlConnection.getInputStream());
strResponse = readStream(inputStream);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != inputStream)
inputStream.close();
} catch (IOException e) {
}
}
return strResponse;
}
public void addFormField(String fieldName, String value) {
try {
dos.writeBytes(TWO_HYPHENS + boundary + LINE_FEED);
dos.writeBytes("Content-Disposition: form-data; name=\"" + fieldName + "\"" + LINE_FEED + LINE_FEED/*+ value + LINE_FEED*/);
/*dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + LINE_FEED);*/
dos.writeBytes(value + LINE_FEED);
} catch (IOException e) {
e.printStackTrace();
}
}
public void addFilePart(String fieldName, File uploadFile) {
try {
dos.writeBytes(TWO_HYPHENS + boundary + LINE_FEED);
dos.writeBytes("Content-Disposition: form-data; name=\"" + fieldName + "\";filename=\"" + uploadFile.getName() + "\"" + LINE_FEED);
dos.writeBytes(LINE_FEED);
FileInputStream fStream = new FileInputStream(uploadFile);
int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
int length = -1;
while ((length = fStream.read(buffer)) != -1) {
dos.write(buffer, 0, length);
}
dos.writeBytes(LINE_FEED);
dos.writeBytes(TWO_HYPHENS + boundary + TWO_HYPHENS + LINE_FEED);
/* close streams */
fStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public void addHeaderField(String name, String value) {
try {
dos.writeBytes(name + ": " + value + LINE_FEED);
} catch (IOException e) {
e.printStackTrace();
}
}
public void build() {
try {
dos.writeBytes(LINE_FEED);
dos.flush();
dos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private static String readStream(InputStream in) {
StringBuilder sb = new StringBuilder();
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String nextLine = "";
while ((nextLine = reader.readLine()) != null) {
sb.append(nextLine);
}
/* Close Stream */
if (null != in) {
in.close();
}
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
private void createServiceUrl() {
if (null == params) {
return;
}
final Iterator<Map.Entry<String, String>> it = params.entrySet().iterator();
boolean isParam = false;
while (it.hasNext()) {
final Map.Entry<String, String> mapEnt = (Map.Entry<String, String>) it.next();
url.append(mapEnt.getKey());
url.append("=");
try {
url.append(URLEncoder.encode(mapEnt.getValue(), "UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (NullPointerException e) {
e.printStackTrace();
}
url.append(WSConstants.AMPERSAND);
isParam = true;
}
if (isParam) {
url.deleteCharAt(url.length() - 1);
}
}
}