Java Code Examples for org.apache.http.HttpEntity#consumeContent()

/**
 * This horrible hack is required on Android, due to implementation of BasicManagedEntity, which
 * doesn't chain call consumeContent on underlying wrapped HttpEntity
 *
 * @param entity HttpEntity, may be null
 */
public static void endEntityViaReflection(HttpEntity entity) {
    if (entity instanceof HttpEntityWrapper) {
        try {
            Field f = null;
            Field[] fields = HttpEntityWrapper.class.getDeclaredFields();
            for (Field ff : fields) {
                if (ff.getName().equals("wrappedEntity")) {
                    f = ff;
                    break;
                }
            }
            if (f != null) {
                f.setAccessible(true);
                HttpEntity wrapped = (HttpEntity) f.get(entity);
                if (wrapped != null) {
                    wrapped.consumeContent();
                }
            }
        } catch (Throwable t) {
            Log.e(LOG_TAG, "wrappedEntity consume", t);
        }
    }
}
 

/**
 * This horrible hack is required on Android, due to implementation of BasicManagedEntity, which
 * doesn't chain call consumeContent on underlying wrapped HttpEntity
 *
 * @param entity HttpEntity, may be null
 */
public static void endEntityViaReflection(HttpEntity entity) {
    if (entity instanceof HttpEntityWrapper) {
        try {
            Field f = null;
            Field[] fields = HttpEntityWrapper.class.getDeclaredFields();
            for (Field ff : fields) {
                if (ff.getName().equals("wrappedEntity")) {
                    f = ff;
                    break;
                }
            }
            if (f != null) {
                f.setAccessible(true);
                HttpEntity wrapped = (HttpEntity) f.get(entity);
                if (wrapped != null) {
                    wrapped.consumeContent();
                }
            }
        } catch (Throwable t) {
            Log.e(LOG_TAG, "wrappedEntity consume", t);
        }
    }
}
 

/**
 * This horrible hack is required on Android, due to implementation of BasicManagedEntity, which
 * doesn't chain call consumeContent on underlying wrapped HttpEntity
 *
 * @param entity HttpEntity, may be null
 */
public static void endEntityViaReflection(HttpEntity entity) {
    if (entity instanceof HttpEntityWrapper) {
        try {
            Field f = null;
            Field[] fields = HttpEntityWrapper.class.getDeclaredFields();
            for (Field ff : fields) {
                if (ff.getName().equals("wrappedEntity")) {
                    f = ff;
                    break;
                }
            }
            if (f != null) {
                f.setAccessible(true);
                HttpEntity wrapped = (HttpEntity) f.get(entity);
                if (wrapped != null) {
                    wrapped.consumeContent();
                }
            }
        } catch (Throwable t) {
            Log.e(LOG_TAG, "wrappedEntity consume", t);
        }
    }
}
 

/**
 * This horrible hack is required on Android, due to implementation of BasicManagedEntity, which
 * doesn't chain call consumeContent on underlying wrapped HttpEntity
 *
 * @param entity HttpEntity, may be null
 */
public static void endEntityViaReflection(HttpEntity entity) {
    if (entity instanceof HttpEntityWrapper) {
        try {
            Field f = null;
            Field[] fields = HttpEntityWrapper.class.getDeclaredFields();
            for (Field ff : fields) {
                if (ff.getName().equals("wrappedEntity")) {
                    f = ff;
                    break;
                }
            }
            if (f != null) {
                f.setAccessible(true);
                HttpEntity wrapped = (HttpEntity) f.get(entity);
                if (wrapped != null) {
                    wrapped.consumeContent();
                }
            }
        } catch (Throwable t) {
            Log.e(LOG_TAG, "wrappedEntity consume", t);
        }
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/**
 * Reads the contents of HttpEntity into a byte[].
 */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes = new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity, Request request) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int progress = 0;
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
            progress += count;
            request.progressUpdate(progress);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VinciLog.d("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/**
 * Reads the contents of HttpEntity into a byte[].
 */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes = new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        int count;
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

public Bitmap Task(String url) {
	final DefaultHttpClient client = new DefaultHttpClient();

	// forming a HttoGet request
	final HttpGet getRequest = new HttpGet(url);
	try {

		HttpResponse response = client.execute(getRequest);

		// check 200 OK for success
		final int statusCode = response.getStatusLine().getStatusCode();

		if (statusCode != HttpStatus.SC_OK) {
			Log.w("ImageDownloader", "Error " + statusCode
					+ " while retrieving bitmap from " + url);
			return null;

		}

		final HttpEntity entity = response.getEntity();
		if (entity != null) {
			InputStream inputStream = null;
			try {
				// getting contents from the stream
				inputStream = entity.getContent();

				// decoding stream data back into image Bitmap that
				// android understands
				final Bitmap bitmap = BitmapFactory
						.decodeStream(inputStream);

				return bitmap;
			} finally {
				if (inputStream != null) {
					inputStream.close();
				}
				entity.consumeContent();
			}
		}
	} catch (Exception e) {
		// You Could provide a more explicit error message for
		// IOException
		getRequest.abort();
		handlernum = -1;
		Log.e("ImageDownloader", "Something went wrong while"
				+ " retrieving bitmap from " + url + e.toString());
	}
	return null;
}
 

/** Reads the contents of HttpEntity into a byte[]. */
/*
 * 执行 Apache HttpEntity -> byte[] 的转化
 */
private byte[] entityToBytes(HttpEntity entity) throws IOException, ServerError {
    /*
     * 实例化一个 PoolingByteArrayOutputStream 对象
     *
     * PoolingByteArrayOutputStream 内设置了一个 ByteArrayPool，会将一些 实例化好的 byte[] 进行缓存
     * 然后回收利用，提供读取流数据
     *
     * 将当前 BasicNetwork 的 ByteArrayPool 提供 给 PoolingByteArrayOutputStream
     * 还需要将 传入一个 需要 output 的数据长度 给 PoolingByteArrayOutputStream，这里用
     * (int) entity.getContentLength() 进行获取
     */
    PoolingByteArrayOutputStream bytes = new PoolingByteArrayOutputStream(mPool,
            (int) entity.getContentLength());
    byte[] buffer = null;
    try {
        // 获取 Apache HttpEntity 的 content 数据流
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        // 获取一个 byte[].length = 1024 的 byte[]
        buffer = mPool.getBuf(1024);
        int count;
        // 开始 边读边写
        while ((count = in.read(buffer)) != -1) {
            // 写入到 PoolingByteArrayOutputStream 中
            bytes.write(buffer, 0, count);
        }
        // 从 PoolingByteArrayOutputStream 中取出 byte[] 数据
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            // 调用 Apache API 关闭 Apache HttpEntity 的 content 数据流
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        // 将使用的 byte[] 放入 ByteArrayPool 缓存回收
        mPool.returnBuf(buffer);
        // 关闭 PoolingByteArrayOutputStream 流
        bytes.close();
    }
}
 

public void flush() throws TTransportException {
  long timer = System.currentTimeMillis();

  HttpEntity httpEntity = null;

  // Extract request and reset buffer
  try {
    // Prepare http post request
    HttpPost request = new HttpPost(url_.toExternalForm());
    this.request = request;
    request.addHeader("Content-Type", "application/x-thrift");
    request.addHeader("Cache-Control", "no-transform");
    if (customHeaders_ != null) {
      for (Map.Entry<String, String> header : customHeaders_.entrySet()) {
        request.addHeader(header.getKey(), header.getValue());
      }
    }
    InputStreamEntity entity =
        new InputStreamEntity(requestBuffer_.getInputStream(), requestBuffer_
            .getSize());
    request.setEntity(entity);
    request.addHeader("Accept", "application/x-thrift");
    request.addHeader("User-Agent", userAgent == null ? "Java/THttpClient"
        : userAgent);
    request.getParams().setBooleanParameter(
        CoreProtocolPNames.USE_EXPECT_CONTINUE, false);

    DefaultHttpClient dHTTP = getHTTPClient();
    HttpResponse response = dHTTP.execute(request);
    httpEntity = response.getEntity();

    int responseCode = response.getStatusLine().getStatusCode();
    if (responseCode != 200) {
      if (httpEntity != null) {
        httpEntity.consumeContent();
      }
      throw new TTransportException("HTTP Response code: " + responseCode);
    }
    // Read the responses
    requestBuffer_.reset();
    inputStream_ = response.getEntity().getContent();
  } catch (IOException iox) {
    throw new TTransportException(iox);
  } catch (Exception ex) {
    throw new TTransportException(ex);
  } finally {
    try {
      requestBuffer_.reset();
    } catch (IOException e) {
    }
    this.request = null;
  }
}
 

/** Reads the contents of HttpEntity into a byte[]. */
private byte[] entityToBytes(ResponseDelivery delivery, Request<?> request, HttpEntity entity) throws IOException, ServerError {
    PoolingByteArrayOutputStream bytes =
            new PoolingByteArrayOutputStream(mPool, (int) entity.getContentLength());
    byte[] buffer = null;
    long time = SystemClock.uptimeMillis();
    try {
        InputStream in = entity.getContent();
        if (in == null) {
            throw new ServerError();
        }
        buffer = mPool.getBuf(1024);
        long length = entity.getContentLength();
        long current = 0;
        int count = -1;
        LoadingListener listener = request.getLoadingListener();
        while ((count = in.read(buffer)) != -1) {
            bytes.write(buffer, 0, count);
            current += count;
            if (listener != null) {
                long thisTime = SystemClock.uptimeMillis();
                if(thisTime - time >= request.getRate()) {
                    time = thisTime;
                    delivery.postLoading(request, length == -1 ? current * 2 : length, current);
                }
            }
        }
        if (listener != null) {
            delivery.postLoading(request, length == -1 ? current : length, current);
        }
        return bytes.toByteArray();
    } finally {
        try {
            // Close the InputStream and release the resources by "consuming the content".
            entity.consumeContent();
        } catch (IOException e) {
            // This can happen if there was an exception above that left the entity in
            // an invalid state.
            VolleyLog.v("Error occured when calling consumingContent");
        }
        mPool.returnBuf(buffer);
        bytes.close();
    }
}
 

public static String getContent(HttpResponse res, String encoding) throws Exception {
	HttpEntity ent = res.getEntity();
	String result = IOUtils.toString(ent.getContent(), encoding);
	ent.consumeContent();
	return result;
}
 

private Bitmap downloadBitmapWithClient(String url) {
    final AndroidHttpClient httpClient = AndroidHttpClient.newInstance("Android");
    HttpClientParams.setRedirecting(httpClient.getParams(), true);
    final HttpGet request = new HttpGet(url);

    try {
        HttpResponse response = httpClient.execute(request);
        final int statusCode = response.getStatusLine().getStatusCode();

        if (statusCode != HttpStatus.SC_OK) {
            Header[] headers = response.getHeaders("Location");

            if (headers != null && headers.length != 0) {
                String newUrl = headers[headers.length - 1].getValue();
                // call again with new URL
                return downloadBitmap(newUrl);
            } else {
                return null;
            }
        }

        final HttpEntity entity = response.getEntity();
        if (entity != null) {
            InputStream inputStream = null;
            try {
                inputStream = entity.getContent();

                // do your work here
                return BitmapFactory.decodeStream(inputStream);
            } finally {
                if (inputStream != null) {
                    inputStream.close();
                }
                entity.consumeContent();
            }
        }
    } catch (Exception e) {
        request.abort();
    } finally {
        if (httpClient != null) {
            httpClient.close();
        }
    }

    return null;
}