java.net.HttpURLConnection.setInstanceFollowRedirects()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.setInstanceFollowRedirects()方法的一些代码示例，展示了HttpURLConnection.setInstanceFollowRedirects()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.setInstanceFollowRedirects()方法的具体详情如下：
包路径：java.net.HttpURLConnection
类名称：HttpURLConnection
方法名：setInstanceFollowRedirects

HttpURLConnection.setInstanceFollowRedirects介绍

[英]Sets whether this connection follows redirects.
[中]设置此连接是否遵循重定向。

代码示例

代码示例来源：origin: stackoverflow.com

String urlParameters  = "param1=a&param2=b&param3=c";
byte[] postData       = urlParameters.getBytes( StandardCharsets.UTF_8 );
int    postDataLength = postData.length;
String request        = "http://example.com/index.php";
URL    url            = new URL( request );
HttpURLConnection conn= (HttpURLConnection) url.openConnection();           
conn.setDoOutput( true );
conn.setInstanceFollowRedirects( false );
conn.setRequestMethod( "POST" );
conn.setRequestProperty( "Content-Type", "application/x-www-form-urlencoded"); 
conn.setRequestProperty( "charset", "utf-8");
conn.setRequestProperty( "Content-Length", Integer.toString( postDataLength ));
conn.setUseCaches( false );
try( DataOutputStream wr = new DataOutputStream( conn.getOutputStream())) {
  wr.write( postData );
}

代码示例来源：origin: spring-projects/spring-framework

/**
 * Template method for preparing the given {@link HttpURLConnection}.
 * <p>The default implementation prepares the connection for input and output, and sets the HTTP method.
 * @param connection the connection to prepare
 * @param httpMethod the HTTP request method ({@code GET}, {@code POST}, etc.)
 * @throws IOException in case of I/O errors
 */
protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {
  if (this.connectTimeout >= 0) {
    connection.setConnectTimeout(this.connectTimeout);
  }
  if (this.readTimeout >= 0) {
    connection.setReadTimeout(this.readTimeout);
  }
  connection.setDoInput(true);
  if ("GET".equals(httpMethod)) {
    connection.setInstanceFollowRedirects(true);
  }
  else {
    connection.setInstanceFollowRedirects(false);
  }
  if ("POST".equals(httpMethod) || "PUT".equals(httpMethod) ||
      "PATCH".equals(httpMethod) || "DELETE".equals(httpMethod)) {
    connection.setDoOutput(true);
  }
  else {
    connection.setDoOutput(false);
  }
  connection.setRequestMethod(httpMethod);
}

代码示例来源：origin: stackoverflow.com

URL url = new URL(url);
HttpURLConnection ucon = (HttpURLConnection) url.openConnection();
ucon.setInstanceFollowRedirects(false);
URL secondURL = new URL(ucon.getHeaderField("Location"));
URLConnection conn = secondURL.openConnection();

代码示例来源：origin: Atmosphere/atmosphere

public void request(String urlString) {
  HttpURLConnection urlConnection = null;
  try {
    URL url = new URL(urlString);
    urlConnection = openURLConnection(url);
    urlConnection.setInstanceFollowRedirects(true);
    urlConnection.setRequestMethod(GET_METHOD_NAME);
    urlConnection.setRequestProperty("User-agent", uaName + " (" + osString + ")");
    logger.debug("Sending Server's information to Atmosphere's Google Analytics {} {}", urlString, uaName + " (" + osString + ")");
    urlConnection.connect();
    int responseCode = getResponseCode(urlConnection);
    if (responseCode != HttpURLConnection.HTTP_OK) {
      logError("JGoogleAnalytics: Error tracking, url=" + urlString);
    } else {
      logMessage(SUCCESS_MESSAGE);
    }
  } catch (Exception e) {
    logError(e.getMessage());
  } finally {
    if (urlConnection != null) {
      urlConnection.disconnect();
    }
  }
}

代码示例来源：origin: bumptech/glide

urlConnection.setInstanceFollowRedirects(false);
 return null;
final int statusCode = urlConnection.getResponseCode();
if (isHttpOk(statusCode)) {
 return getStreamForSuccessfulRequest(urlConnection);
  throw new HttpException("Received empty or null redirect url");
 URL redirectUrl = new URL(url, redirectUrlString);

代码示例来源：origin: google/ExoPlayer

boolean followRedirects)
 throws IOException {
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(connectTimeoutMillis);
connection.setReadTimeout(readTimeoutMillis);
 connection.setRequestProperty("Accept-Encoding", "identity");
connection.setInstanceFollowRedirects(followRedirects);
connection.setDoOutput(httpBody != null);
connection.setRequestMethod(DataSpec.getStringForHttpMethod(httpMethod));
if (httpBody != null) {
 connection.setFixedLengthStreamingMode(httpBody.length);

代码示例来源：origin: spotify/helios

private HttpURLConnection connect0(final URI ipUri, final String method, final byte[] entity,
                  final Map<String, List<String>> headers,
                  final String endpointHost)
  throws IOException {
 if (log.isTraceEnabled()) {
  log.trace("req: {} {} {} {} {} {}", method, ipUri, headers.size(),
    Joiner.on(',').withKeyValueSeparator("=").join(headers),
    entity.length, Json.asPrettyStringUnchecked(entity));
 } else {
  log.debug("req: {} {} {} {}", method, ipUri, headers.size(), entity.length);
 }
 final HttpURLConnection connection = (HttpURLConnection) ipUri.toURL().openConnection();
 handleHttps(connection, endpointHost, hostnameVerifierProvider, extraHttpsHandler);
 connection.setRequestProperty("Accept-Encoding", "gzip");
 connection.setInstanceFollowRedirects(false);
 connection.setConnectTimeout(httpTimeoutMillis);
 connection.setReadTimeout(httpTimeoutMillis);
 for (final Map.Entry<String, List<String>> header : headers.entrySet()) {
  for (final String value : header.getValue()) {
   connection.addRequestProperty(header.getKey(), value);
  }
 }
 if (entity.length > 0) {
  connection.setDoOutput(true);
  connection.getOutputStream().write(entity);
 }
 setRequestMethod(connection, method, connection instanceof HttpsURLConnection);
 return connection;
}

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

private InputStream readData(int offset, int length) throws IOException{
  HttpURLConnection conn = (HttpURLConnection) zipUrl.openConnection();
  conn.setDoOutput(false);
  conn.setUseCaches(false);
  conn.setInstanceFollowRedirects(false);
  String range = "-";
  if (offset != Integer.MAX_VALUE){
    range = offset + range;
  }
  if (length != Integer.MAX_VALUE){
    if (offset != Integer.MAX_VALUE){
      range = range + (offset + length - 1);
    }else{
      range = range + length;
    }
  }
  conn.setRequestProperty("Range", "bytes=" + range);
  conn.connect();
  if (conn.getResponseCode() == HttpURLConnection.HTTP_PARTIAL){
    return conn.getInputStream();
  }else if (conn.getResponseCode() == HttpURLConnection.HTTP_OK){
    throw new IOException("Your server does not support HTTP feature Content-Range. Please contact your server administrator.");
  }else{
    throw new IOException(conn.getResponseCode() + " " + conn.getResponseMessage());
  }
}

代码示例来源：origin: google/agera

@NonNull
private HttpResponse getHttpResponseResult(final @NonNull HttpRequest request,
  @NonNull final HttpURLConnection connection) throws IOException {
 connection.setConnectTimeout(request.connectTimeoutMs);
 connection.setReadTimeout(request.readTimeoutMs);
 connection.setInstanceFollowRedirects(request.followRedirects);
 connection.setUseCaches(request.useCaches);
 connection.setDoInput(true);
 connection.setRequestMethod(request.method);
 for (final Entry<String, String> headerField : request.header.entrySet()) {
  connection.addRequestProperty(headerField.getKey(), headerField.getValue());
 }
 final byte[] body = request.body;
 if (body.length > 0) {
  connection.setDoOutput(true);
  final OutputStream out = connection.getOutputStream();
  try {
   out.write(body);
  } finally {
   out.close();
  }
 }
 final String responseMessage = connection.getResponseMessage();
 return httpResponse(connection.getResponseCode(),
   responseMessage != null ? responseMessage : "",
   getHeader(connection), getByteArray(connection));
}

代码示例来源：origin: stackoverflow.com

HttpURLConnection con = (HttpURLConnection)(new URL( url ).openConnection());
con.setInstanceFollowRedirects( false );
con.connect();
int responseCode = con.getResponseCode();
System.out.println( responseCode );
String location = con.getHeaderField( "Location" );
System.out.println( location );

代码示例来源：origin: pwittchen/ReactiveNetwork

protected HttpURLConnection createHttpUrlConnection(final String host, final int port,
   final int timeoutInMs) throws IOException {
  URL initialUrl = new URL(host);
  URL url = new URL(initialUrl.getProtocol(), initialUrl.getHost(), port, initialUrl.getFile());
  HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
  urlConnection.setConnectTimeout(timeoutInMs);
  urlConnection.setReadTimeout(timeoutInMs);
  urlConnection.setInstanceFollowRedirects(false);
  urlConnection.setUseCaches(false);
  return urlConnection;
 }
}

代码示例来源：origin: yanzhenjie/NoHttp

@Override
public Network execute(BasicRequest<?> request) throws Exception {
  URL url = new URL(request.url());
  HttpURLConnection connection = URLConnectionFactory.getInstance().open(url, request.getProxy());
  connection.setConnectTimeout(request.getConnectTimeout());
  connection.setReadTimeout(request.getReadTimeout());
  connection.setInstanceFollowRedirects(false);
  connection.setRequestMethod(request.getRequestMethod().getValue());

代码示例来源：origin: nutzam/nutz

conn = (HttpURLConnection) request.getUrl().openConnection(proxy);
    conn.setConnectTimeout(connTime);
    conn.setInstanceFollowRedirects(followRedirects);
    if (timeout > 0)
      conn.setReadTimeout(timeout);
conn = (HttpURLConnection) url.openConnection();
if (conn instanceof HttpsURLConnection) {
  HttpsURLConnection httpsc = (HttpsURLConnection)conn;
  conn.setRequestMethod(request.getMethod().name());
else
  conn.setRequestMethod(request.getMethodString());
if (timeout > 0)
  conn.setReadTimeout(timeout);
else
  conn.setReadTimeout(Default_Read_Timeout);
conn.setInstanceFollowRedirects(followRedirects);
if (interceptor != null)
  this.interceptor.afterConnect(request, conn);

代码示例来源：origin: Justson/AgentWeb

private HttpURLConnection createUrlConnectionAndSettingHeaders(URL url) throws IOException {
  HttpURLConnection mHttpURLConnection = (HttpURLConnection) url.openConnection();
  mHttpURLConnection.setConnectTimeout(mConnectTimeOut);
  mHttpURLConnection.setInstanceFollowRedirects(false);
  mHttpURLConnection.setReadTimeout(mDownloadTask.getBlockMaxTime());
  mHttpURLConnection.setRequestProperty("Accept", "application/*");
  mHttpURLConnection.setRequestProperty("Accept-Encoding", "identity");
  mHttpURLConnection.setRequestProperty("Connection", "close");
  mHttpURLConnection.setRequestProperty("Cookie", AgentWebConfig.getCookiesByUrl(url.toString()));
  Map<String, String> mHeaders = null;
  if ((null != mDownloadTask.getExtraServiceImpl()) && null != (mHeaders = mDownloadTask.getExtraServiceImpl().getHeaders()) &&
      !mHeaders.isEmpty()) {
    for (Map.Entry<String, String> entry : mHeaders.entrySet()) {
      if (TextUtils.isEmpty(entry.getKey()) || TextUtils.isEmpty(entry.getValue())) {
        continue;
      }
      mHttpURLConnection.setRequestProperty(entry.getKey(), entry.getValue());
    }
  }
  if (mDownloadTask.getFile().length() > 0) {
    String mEtag = "";
    if (!TextUtils.isEmpty((mEtag = getEtag()))) {
      LogUtils.i(TAG, "Etag:" + mEtag);
      mHttpURLConnection.setRequestProperty("If-Match", getEtag());
    }
    mHttpURLConnection.setRequestProperty("Range", "bytes=" + (mLastLoaded = mDownloadTask.getFile().length()) + "-");
  }
  return mHttpURLConnection;
}

代码示例来源：origin: jersey/jersey

setRequestMethodViaJreBugWorkaround(uc, httpMethod);
} else {
  uc.setRequestMethod(httpMethod);
uc.setInstanceFollowRedirects(request.resolveProperty(ClientProperties.FOLLOW_REDIRECTS, true));
final int code = uc.getResponseCode();
final String reasonPhrase = uc.getResponseMessage();
final Response.StatusType status =

代码示例来源：origin: org.springframework/spring-web

/**
 * Template method for preparing the given {@link HttpURLConnection}.
 * <p>The default implementation prepares the connection for input and output, and sets the HTTP method.
 * @param connection the connection to prepare
 * @param httpMethod the HTTP request method ({@code GET}, {@code POST}, etc.)
 * @throws IOException in case of I/O errors
 */
protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {
  if (this.connectTimeout >= 0) {
    connection.setConnectTimeout(this.connectTimeout);
  }
  if (this.readTimeout >= 0) {
    connection.setReadTimeout(this.readTimeout);
  }
  connection.setDoInput(true);
  if ("GET".equals(httpMethod)) {
    connection.setInstanceFollowRedirects(true);
  }
  else {
    connection.setInstanceFollowRedirects(false);
  }
  if ("POST".equals(httpMethod) || "PUT".equals(httpMethod) ||
      "PATCH".equals(httpMethod) || "DELETE".equals(httpMethod)) {
    connection.setDoOutput(true);
  }
  else {
    connection.setDoOutput(false);
  }
  connection.setRequestMethod(httpMethod);
}

代码示例来源：origin: stackoverflow.com

private void updateCustomer(Customer customer) { 
  try { 
    URL url = new URL("http://www.example.com/customers"); 
    HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
    connection.setDoOutput(true); 
    connection.setInstanceFollowRedirects(false); 
    connection.setRequestMethod("PUT"); 
    connection.setRequestProperty("Content-Type", "application/xml"); 

    OutputStream os = connection.getOutputStream(); 
    jaxbContext.createMarshaller().marshal(customer, os); 
    os.flush(); 

    connection.getResponseCode(); 
    connection.disconnect(); 
  } catch(Exception e) { 
    throw new RuntimeException(e); 
  } 
}

代码示例来源：origin: TeamNewPipe/NewPipe

/**
 * Open connection
 *
 * @param threadId   id of the calling thread, used only for debug
 * @param rangeStart range start
 * @param rangeEnd   range end
 * @return a {@link java.net.URLConnection URLConnection} linking to the URL.
 * @throws IOException if an I/O exception occurs.
 */
HttpURLConnection openConnection(int threadId, long rangeStart, long rangeEnd) throws IOException {
  URL url = new URL(urls[current]);
  HttpURLConnection conn = (HttpURLConnection) url.openConnection();
  conn.setInstanceFollowRedirects(true);
  if (rangeStart >= 0) {
    String req = "bytes=" + rangeStart + "-";
    if (rangeEnd > 0) req += rangeEnd;
    conn.setRequestProperty("Range", req);
    if (DEBUG) {
      Log.d(TAG, threadId + ":" + conn.getRequestProperty("Range"));
    }
  }
  return conn;
}

代码示例来源：origin: org.jsoup/jsoup

private static HttpURLConnection createConnection(Connection.Request req) throws IOException {
  final HttpURLConnection conn = (HttpURLConnection) (
    req.proxy() == null ?
    req.url().openConnection() :
    req.url().openConnection(req.proxy())
  );
  conn.setRequestMethod(req.method().name());
  conn.setInstanceFollowRedirects(false); // don't rely on native redirection support
  conn.setConnectTimeout(req.timeout());
  conn.setReadTimeout(req.timeout() / 2); // gets reduced after connection is made and status is read

代码示例来源：origin: Atmosphere/atmosphere

logger.debug("Retrieving Atmosphere's latest version from http://async-io.org/version.html");
HttpURLConnection urlConnection = (HttpURLConnection)
    URI.create("http://async-io.org/version.html").toURL().openConnection();
urlConnection.setRequestProperty("User-Agent", "Mozilla/5.0");
urlConnection.setRequestProperty("Connection", "keep-alive");
urlConnection.setRequestProperty("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.3");
urlConnection.setRequestProperty("If-Modified-Since", "ISO-8859-1,utf-8;q=0.7,*;q=0.3");
urlConnection.setInstanceFollowRedirects(true);

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