java.net.HttpURLConnection.getHeaderField()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中java.net.HttpURLConnection.getHeaderField()方法的一些代码示例，展示了HttpURLConnection.getHeaderField()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。HttpURLConnection.getHeaderField()方法的具体详情如下：
包路径：java.net.HttpURLConnection
类名称：HttpURLConnection
方法名：getHeaderField

HttpURLConnection.getHeaderField介绍

[英]Returns the value for the nth header field. Some implementations may treat the 0th header field as special, i.e. as the status line returned by the HTTP server.

This method can be used in conjunction with the #getHeaderFieldKey method to iterate through all the headers in the message.
[中]返回第n个标头字段的值。某些实现可能将第0个头字段视为特殊字段，即HTTP服务器返回的状态行。
此方法可与#getHeaderFieldKey方法结合使用，以迭代消息中的所有头。

代码示例

代码示例来源：origin: frohoff/ysoserial

public static InetSocketAddress getCliPort ( String jenkinsUrl ) throws MalformedURLException, IOException {
  URL u = new URL(jenkinsUrl);

  URLConnection conn = u.openConnection();
  if ( ! ( conn instanceof HttpURLConnection ) ) {
    System.err.println("Not a HTTP URL");
    throw new MalformedURLException();
  }

  HttpURLConnection hc = (HttpURLConnection) conn;
  if ( hc.getResponseCode() >= 400 ) {
    System.err.println("* Error connection to jenkins HTTP " + u);
  }
  int clip = Integer.parseInt(hc.getHeaderField("X-Jenkins-CLI-Port"));

  return new InetSocketAddress(u.getHost(), clip);
}

代码示例来源：origin: kiegroup/optaplanner

private void redirectConnection(HttpURLConnection http) throws IOException {
    URL base = http.getURL();
    String location = http.getHeaderField("Location");
    URL target = null;
    if (location != null) {
      target = new URL(base, location);
    }
    http.disconnect();
    // Redirection should be allowed only for HTTP and HTTPS
    // and should be limited to 5 redirections at most.
    if (target == null || !(target.getProtocol().equals("http")
        || target.getProtocol().equals("https"))
        || redirects >= 5) {
      throw new SecurityException("illegal URL redirect");
    }
    isRedirect = true;
    connection = target.openConnection();
    redirects++;
  }
}

代码示例来源：origin: robovm/robovm

getInputStream();
String response = getHeaderField(0);
if (response == null) {
  return -1;

代码示例来源：origin: cucumber/cucumber-jvm

@Override
public void close() throws IOException {
  try {
    if (urlConnection != null) {
      int responseCode = urlConnection.getResponseCode();
      if (responseCode != expectedResponseCode) {
        try {
          urlConnection.getInputStream().close();
          throw new IOException(String.format("Expected response code: %d. Got: %d", expectedResponseCode, responseCode));
        } catch (IOException expected) {
          InputStream errorStream = urlConnection.getErrorStream();
          if (errorStream != null) {
            String responseBody = FixJava.readReader(new InputStreamReader(errorStream, "UTF-8"));
            String contentType = urlConnection.getHeaderField("Content-Type");
            if (contentType == null) {
              contentType = "text/plain";
            }
            throw new ResponseException(responseBody, expected, responseCode, contentType);
          } else {
            throw expected;
          }
        }
      }
    }
  } finally {
    out.close();
  }
}

代码示例来源：origin: webex/spark-java-sdk

private void parseLinks(HttpURLConnection connection) throws IOException {
  urls.clear();
  String link = connection.getHeaderField("Link");
  if (link != null && !"".equals(link)) {
    Matcher matcher = linkPattern.matcher(link);
    while (matcher.find()) {
      String url = matcher.group(1);
      String foundRel = matcher.group(2);
      urls.put(foundRel, new URL(url));
    }
  }
}

代码示例来源：origin: google/ExoPlayer

URL url = new URL(dataSpec.uri.toString());
@HttpMethod int httpMethod = dataSpec.httpMethod;
byte[] httpBody = dataSpec.httpBody;
   makeConnection(
     url, httpMethod, httpBody, position, length, allowGzip, false /* followRedirects */);
 int responseCode = connection.getResponseCode();
 String location = connection.getHeaderField("Location");
 if ((httpMethod == DataSpec.HTTP_METHOD_GET || httpMethod == DataSpec.HTTP_METHOD_HEAD)
   && (responseCode == HttpURLConnection.HTTP_MULT_CHOICE

代码示例来源：origin: org.apache.hadoop/hadoop-common

separator = "&";
url = new URL(sb.toString());
AuthenticatedURL aUrl = new AuthenticatedURL(this, connConfigurator);
org.apache.hadoop.security.token.Token<AbstractDelegationTokenIdentifier>
 HttpExceptionUtils.validateResponse(conn, HttpURLConnection.HTTP_OK);
 if (hasResponse) {
  String contentType = conn.getHeaderField(CONTENT_TYPE);
  contentType =
    (contentType != null) ? StringUtils.toLowerCase(contentType) : null;
    contentType.contains(APPLICATION_JSON_MIME)) {
   try {
    ret = JsonSerialization.mapReader().readValue(conn.getInputStream());
   } catch (Exception ex) {
    throw new AuthenticationException(String.format(

代码示例来源：origin: aa112901/remusic

HttpURLConnection response = HttpUtils.send(url.openConnection());
if (response == null) {
  return false;
int contentLength = Integer.valueOf(response.getHeaderField(Constants.CONTENT_LENGTH));
cacheDao.insertOrUpdate(fileUtils.getFileName(), contentLength);
InputStream data = response.getInputStream();
byte[] buff = new byte[1024 * 40];
int readBytes = 0;

代码示例来源：origin: apache/oozie

@Override
  public Void call() throws Exception {
    MockDagEngineService.reset();
    Map<String, String> params = new HashMap<String, String>();
    params.put(RestConstants.JOB_SHOW_PARAM, RestConstants.JOB_SHOW_GRAPH);
    URL url = createURL(MockDagEngineService.JOB_ID + 1 + MockDagEngineService.JOB_ID_END, params);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod("GET");
    assertEquals(HttpServletResponse.SC_BAD_REQUEST, conn.getResponseCode());
    assertEquals(ErrorCode.E0306.name(), conn.getHeaderField(RestConstants.OOZIE_ERROR_CODE));
    return null;
  }
});

代码示例来源：origin: jenkinsci/jenkins

int responseCode = httpCon.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_MOVED_PERM
    || responseCode == HttpURLConnection.HTTP_MOVED_TEMP) {
    String location = httpCon.getHeaderField("Location");
    listener.getLogger().println("Following redirect " + archive.toExternalForm() + " -> " + location);
    return installIfNecessaryFrom(getUrlFactory().newURL(location), listener, message, maxRedirects - 1);

代码示例来源：origin: pmd/pmd

private int computeHttpResponse(String url) {
  try {
    final HttpURLConnection httpURLConnection = (HttpURLConnection) new URL(url).openConnection();
    httpURLConnection.setRequestMethod("HEAD");
    httpURLConnection.setConnectTimeout(5000);
    httpURLConnection.setReadTimeout(15000);
    httpURLConnection.connect();
    final int responseCode = httpURLConnection.getResponseCode();
    String response = "HTTP " + responseCode;
    if (httpURLConnection.getHeaderField("Location") != null) {
      response += ", Location: " + httpURLConnection.getHeaderField("Location");
    }
    LOG.fine("response: " + response + " on " + url);
    // success (HTTP 2xx) or redirection (HTTP 3xx)
    return responseCode;
  } catch (IOException ex) {
    LOG.fine("response: " + ex.getClass().getName() + " on " + url + " : " + ex.getMessage());
    return 599;
  }
}

代码示例来源：origin: yuliskov/SmartYouTubeTV

protected String doInBackground(String... urls)
{
  URL url;
  String filename = null;
  try {
    url = new URL(urls[0]);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.connect();
    conn.setInstanceFollowRedirects(false);
    String depo = conn.getHeaderField("Content-Disposition");
    if (depo != null)
      filename = depo.replaceFirst("(?i)^.*filename=\"?([^\"]+)\"?.*$", "$1");
    else
      filename = URLUtil.guessFileName(urls[0], null, null);
  } catch (MalformedURLException e1) {
    e1.printStackTrace();
  } catch (IOException e) {
  }
  return filename;
}

代码示例来源：origin: nostra13/Android-Universal-Image-Loader

while (conn.getResponseCode() / 100 == 3 && redirectCount < MAX_REDIRECT_COUNT) {
  conn = createConnection(conn.getHeaderField("Location"), extra);
  redirectCount++;
  imageStream = conn.getInputStream();
} catch (IOException e) {
  throw new IOException("Image request failed with response code " + conn.getResponseCode());

代码示例来源：origin: com.cloudbees.mtslaves/mansion-client

public SnapshotRef snapshot() throws IOException {
  HttpURLConnection con = postJson(open("snapshot"),new JSONObject());
  verifyResponseStatus(con);
  return new SnapshotRef(new URL(con.getHeaderField("Location")), token);
}

代码示例来源：origin: guolindev/giffun

return null;
final int statusCode = urlConnection.getResponseCode();
if (statusCode / 100 == 2) {
  return getStreamForSuccessfulRequest(urlConnection);
} else if (statusCode / 100 == 3) {
  String redirectUrlString = urlConnection.getHeaderField("Location");
  if (TextUtils.isEmpty(redirectUrlString)) {
    throw new IOException("Received empty or null redirect url");
  URL redirectUrl = new URL(url, redirectUrlString);
  return loadDataWithRedirects(redirectUrl, redirects + 1, url, headers);
} else {

代码示例来源：origin: DozerMapper/dozer

/**
   * NOTE: GitHub.io returns 301 so we need to handle redirection here, else SAX fails.
   *
   * @param systemId systemId used by XSD
   * @return stream to XSD
   * @throws IOException if fails to find XSD
   */
  private InputSource resolveFromURL(String systemId) throws IOException {
    log.debug("Trying to download [{}]", systemId);

    URL obj = new URL(systemId);
    HttpURLConnection conn = (HttpURLConnection)obj.openConnection();

    int status = conn.getResponseCode();
    if ((status != HttpURLConnection.HTTP_OK)
      && (status == HttpURLConnection.HTTP_MOVED_TEMP
       || status == HttpURLConnection.HTTP_MOVED_PERM
       || status == HttpURLConnection.HTTP_SEE_OTHER)) {

      log.debug("Received status of {}, attempting to follow Location header", status);

      String newUrl = conn.getHeaderField("Location");
      conn = (HttpURLConnection)new URL(newUrl).openConnection();
    }

    return new InputSource(conn.getInputStream());
  }
}

代码示例来源：origin: ron190/jsql-injection

targetUrl = new URL(this.urlAdminPage);
} catch (MalformedURLException e) {
  isUrlIncorrect = true;
HttpURLConnection connection = (HttpURLConnection) targetUrl.openConnection();
this.responseCodeHttp = ObjectUtils.firstNonNull(connection.getHeaderField(0), "");

代码示例来源：origin: spring-projects/spring-security-oauth

out.close();
responseCode = connection.getResponseCode();
responseMessage = connection.getResponseMessage();
if (responseMessage == null) {
 return connection.getInputStream();
String authHeaderValue = connection.getHeaderField("WWW-Authenticate");
if (authHeaderValue != null) {
 Map<String, String> headerEntries = StringSplitUtils.splitEachArrayElementAndCreateMap(StringSplitUtils.splitIgnoringQuotes(authHeaderValue, ','), "=", "\"");

代码示例来源：origin: com.cloudbees.mtslaves/mansion-client

/**
 * @param _for
 *      Account for which the virtual machine is assigned to.
 */
public VirtualMachineRef createVirtualMachine(HardwareSpec spec, String _for) throws IOException {
  JsonConfig jsc = new JsonConfig();
  jsc.setIgnoreTransientFields(true);
  String q = _for != null ? "?for=" + _for : "";
  HttpURLConnection con = postJson(open("createVirtualMachine" + q), JSONObject.fromObject(spec,jsc));
  verifyResponseStatus(con);
  return new VirtualMachineRef(new URL(con.getHeaderField("Location")), token);
}

代码示例来源：origin: DozerMapper/dozer

/**
   * Attempts to open a http connection for the systemId resource, and follows the first redirect
   *
   * @param systemId url to the XSD
   * @return stream to XSD
   * @throws IOException if fails to find XSD
   */
  private InputStream resolveFromURL(String systemId) throws IOException {
    LOG.debug("Trying to download [{}]", systemId);

    URL obj = new URL(systemId);
    HttpURLConnection conn = (HttpURLConnection)obj.openConnection();

    int status = conn.getResponseCode();
    if ((status != HttpURLConnection.HTTP_OK)
      && (status == HttpURLConnection.HTTP_MOVED_TEMP
       || status == HttpURLConnection.HTTP_MOVED_PERM
       || status == HttpURLConnection.HTTP_SEE_OTHER)) {

      LOG.debug("Received status of {}, attempting to follow Location header", status);

      String newUrl = conn.getHeaderField("Location");
      conn = (HttpURLConnection)new URL(newUrl).openConnection();
    }

    return conn.getInputStream();
  }
}

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