Example #1
0
  /**
   * Sends a GET request and returns the response.
   *
   * @param endpoint The endpoint to send the request to.
   * @param headers Any additional headers to send with this request. You can use {@link
   *     org.apache.http.HttpHeaders} constants for header names.
   * @return A {@link Path} to the downloaded content, if any.
   * @throws IOException If an error occurs.
   * @see java.nio.file.Files#probeContentType(Path)
   */
  public Response<Path> get(Endpoint endpoint, NameValuePair... headers) throws IOException {

    // Create the request
    HttpGet get = new HttpGet(endpoint.url());
    get.setHeaders(combineHeaders(headers));
    Path tempFile = null;

    // Send the request and process the response
    try (CloseableHttpResponse response = httpClient().execute(get)) {

      if (response.getStatusLine().getStatusCode() != HttpStatus.OK_200) {
        return null;
      } // If bad response return null

      // Request the content
      HttpEntity entity = response.getEntity();

      // Download the content to a temporary file
      if (entity != null) {
        tempFile = Files.createTempFile("download", "file");
        try (InputStream input = entity.getContent();
            OutputStream output = Files.newOutputStream(tempFile)) {
          IOUtils.copy(input, output);
        }
      }

      return new Response<>(response.getStatusLine(), tempFile);
    }
  }
Example #2
0
  /**
   * Sends a POST request with a file and returns the response.
   *
   * @param endpoint The endpoint to send the request to.
   * @param file The file to upload
   * @param responseClass The class to deserialise the Json response to. Can be null if no response
   *     message is expected.
   * @param <T> The type to deserialise the response to.
   * @return A {@link Response} containing the deserialised body, if any.
   * @throws IOException If an error occurs.
   * @see MultipartEntityBuilder
   */
  private <T> Response<T> post(Endpoint endpoint, File file, Class<T> responseClass)
      throws IOException {
    if (file == null) {
      return post(endpoint, responseClass);
    } // deal with null case

    // Create the request
    HttpPost post = new HttpPost(endpoint.url());
    post.setHeaders(combineHeaders());

    // Add fields as text pairs
    MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
    // Add file as binary
    FileBody fileBody = new FileBody(file);
    multipartEntityBuilder.addPart("file", fileBody);

    // Set the body
    post.setEntity(multipartEntityBuilder.build());

    // Send the request and process the response
    try (CloseableHttpResponse response = httpClient().execute(post)) {
      if (String.class.isAssignableFrom(responseClass)) {
        String body = getResponseString(response);
        return new Response(response.getStatusLine(), body);
      } else {
        T body = deserialiseResponseMessage(response, responseClass);
        return new Response<>(response.getStatusLine(), body);
      }
    }
  }
Example #3
0
  /**
   * Sends a POST request with a file and returns the response.
   *
   * @param endpoint The endpoint to send the request to.
   * @param file The file to upload
   * @param responseClass The class to deserialise the Json response to. Can be null if no response
   *     message is expected.
   * @param fields Any name-value pairs to serialise
   * @param <T> The type to deserialise the response to.
   * @return A {@link Response} containing the deserialised body, if any.
   * @throws IOException If an error occurs.
   * @see MultipartEntityBuilder
   */
  public <T> Response<T> post(
      Endpoint endpoint, File file, Class<T> responseClass, NameValuePair... fields)
      throws IOException {
    if (file == null) {
      return post(endpoint, responseClass, fields);
    } // deal with null case

    // Create the request
    HttpPost post = new HttpPost(endpoint.url());
    post.setHeaders(combineHeaders());

    // Add fields as text pairs
    MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
    for (NameValuePair field : fields) {
      multipartEntityBuilder.addTextBody(field.getName(), field.getValue());
    }
    // Add file as binary
    FileBody bin = new FileBody(file);
    multipartEntityBuilder.addPart("file", bin);

    // Set the body
    post.setEntity(multipartEntityBuilder.build());

    // Send the request and process the response
    try (CloseableHttpResponse response = httpClient().execute(post)) {
      T body = deserialiseResponseMessage(response, responseClass);
      return new Response<>(response.getStatusLine(), body);
    }
  }
Example #4
0
  /**
   * Sends a POST request and returns the response.
   *
   * @param endpoint The endpoint to send the request to.
   * @param responseClass The class to deserialise the Json response to. Can be null if no response
   *     message is expected.
   * @param headers Any additional headers to send with this request. You can use {@link
   *     org.apache.http.HttpHeaders} constants for header names.
   * @param <T> The type to deserialise the response to.
   * @return A {@link Response} containing the deserialised body, if any.
   * @throws IOException If an error occurs.
   */
  public <T> Response<T> delete(Endpoint endpoint, Class<T> responseClass, NameValuePair... headers)
      throws IOException {

    // Create the request
    HttpDelete delete = new HttpDelete(endpoint.url());
    delete.setHeaders(combineHeaders(headers));

    // Send the request and process the response
    try (CloseableHttpResponse response = httpClient().execute(delete)) {
      T body = deserialiseResponseMessage(response, responseClass);
      return new Response<>(response.getStatusLine(), body);
    }
  }
Example #5
0
  /**
   * Sends a GET request and returns the response.
   *
   * @param endpoint The endpoint to send the request to.
   * @param responseClass The class to deserialise the Json response to. Can be null if no response
   *     message is expected.
   * @param headers Any additional headers to send with this request. You can use {@link
   *     org.apache.http.HttpHeaders} constants for header names.
   * @param <T> The type to deserialise the response to.
   * @return A {@link Response} containing the deserialised body, if any.
   * @throws IOException If an error occurs.
   */
  public <T> Response<T> get(Endpoint endpoint, Class<T> responseClass, NameValuePair... headers)
      throws IOException {

    // Create the request
    HttpGet get = new HttpGet(endpoint.url());
    get.setHeaders(combineHeaders(headers));

    // Send the request and process the response
    try (CloseableHttpResponse response = httpClient().execute(get)) {
      // System.out.println(response);
      T body = deserialiseResponseMessage(response, responseClass);
      return new Response<>(response.getStatusLine(), body);
    }
  }
Example #6
0
  /**
   * Sends a POST request and returns the response.
   *
   * <p>Specifically for the use case where we have no requestMessage
   *
   * @param endpoint The endpoint to send the request to.
   * @param responseClass The class to deserialise the Json response to. Can be null if no response
   *     message is expected.
   * @param headers Any additional headers to send with this request. You can use {@link
   *     org.apache.http.HttpHeaders} constants for header names.
   * @param <T> The type to deserialise the response to.
   * @return A {@link Response} containing the deserialised body, if any.
   * @throws IOException If an error occurs.
   */
  public <T> Response<T> post(Endpoint endpoint, Class<T> responseClass, NameValuePair... headers)
      throws IOException {

    // Create the request
    HttpPost post = new HttpPost(endpoint.url());
    post.setHeaders(combineHeaders(headers));

    // Add the request message if there is one
    post.setEntity(serialiseRequestMessage(null));

    // Send the request and process the response
    try (CloseableHttpResponse response = httpClient().execute(post)) {
      T body = deserialiseResponseMessage(response, responseClass);
      return new Response<>(response.getStatusLine(), body);
    }
  }