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

HttpURLConnection.getResponseCode介绍

[英]Returns the response code returned by the remote HTTP server.
[中]返回远程HTTP服务器返回的响应代码。

代码示例

canonical example by Tabnine

public void postRequest(String urlStr, String jsonBodyStr) throws IOException {
  URL url = new URL(urlStr);
  HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
  httpURLConnection.setDoOutput(true);
  httpURLConnection.setRequestMethod("POST");
  httpURLConnection.setRequestProperty("Content-Type", "application/json");
  try (OutputStream outputStream = httpURLConnection.getOutputStream()) { 
   outputStream.write(jsonBodyStr.getBytes());
   outputStream.flush();
  }
  if (httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
    try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()))) {
      String line;
      while ((line = bufferedReader.readLine()) != null) {
        // ... do something with line
      }
    }
  } else {
    // ... do something with unsuccessful response
  }
}

代码示例来源：origin: skylot/jadx

private static <T> T get(String url, Type type) throws IOException {
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();
    con.setRequestMethod("GET");
    if (con.getResponseCode() == 200) {
      Reader reader = new InputStreamReader(con.getInputStream(), StandardCharsets.UTF_8);
      return GSON.fromJson(reader, type);
    }
    return null;
  }
}

代码示例来源：origin: stackoverflow.com

HttpURLConnection httpConn = (HttpURLConnection)_urlConnection;
InputStream _is;
if (httpConn.getResponseCode() < 400) {
  _is = httpConn.getInputStream();
} else {
   /* error from server */
  _is = httpConn.getErrorStream();
}

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: apache/ignite

/**
 * @param url Url.
 * @return Contents.
 * @throws IOException If failed.
 */
private String getHttpContents(URL url) throws IOException {
  HttpURLConnection conn = (HttpURLConnection)url.openConnection();
  int code = conn.getResponseCode();
  if (code != 200)
    throw null;
  BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
  return rd.lines().collect(Collectors.joining());
}

代码示例来源：origin: jenkinsci/jenkins

String suggestedPluginUrl = updateCenterJsonUrl.replace("/update-center.json", "/platform-plugins.json");
try {
  URLConnection connection = ProxyConfiguration.open(new URL(suggestedPluginUrl));
      int responseCode = ((HttpURLConnection)connection).getResponseCode();
      if(HttpURLConnection.HTTP_OK != responseCode) {
        throw new HttpRetryException("Invalid response code (" + responseCode + ") from URL: " + suggestedPluginUrl, responseCode);
    String initialPluginJson = IOUtils.toString(connection.getInputStream(), "utf-8");
    initialPluginList = JSONArray.fromObject(initialPluginJson);
    break updateSiteList;

代码示例来源：origin: jenkinsci/jenkins

@RequirePOST
public FormValidation doCheckUrl(@QueryParameter String value) {
  Jenkins.getInstance().checkPermission(Jenkins.ADMINISTER);
  
  try {
    URLConnection conn = ProxyConfiguration.open(new URL(value));
    conn.connect();
    if (conn instanceof HttpURLConnection) {
      if (((HttpURLConnection) conn).getResponseCode() != HttpURLConnection.HTTP_OK) {
        return FormValidation.error(Messages.ZipExtractionInstaller_bad_connection());
      }
    }
    return FormValidation.ok();
  } catch (MalformedURLException x) {
    return FormValidation.error(Messages.ZipExtractionInstaller_malformed_url());
  } catch (IOException x) {
    return FormValidation.error(x,Messages.ZipExtractionInstaller_could_not_connect());
  }
}

代码示例来源：origin: robovm/robovm

URL findResource(String name) {
  URL resURL = targetURL(url, name);
  if (resURL != null) {
    try {
      URLConnection uc = resURL.openConnection();
      uc.getInputStream().close();
      // HTTP can return a stream on a non-existent file
      // So check for the return code;
      if (!resURL.getProtocol().equals("http")) {
        return resURL;
      }
      int code;
      if ((code = ((HttpURLConnection) uc).getResponseCode()) >= 200
          && code < 300) {
        return resURL;
      }
    } catch (SecurityException e) {
      return null;
    } catch (IOException e) {
      return null;
    }
  }
  return null;
}

代码示例来源：origin: stanfordnlp/CoreNLP

public boolean checkStatus(URL serverURL) {
 try {
  // 1. Set up the connection
  HttpURLConnection connection = (HttpURLConnection) serverURL.openConnection();
  // 1.1 Set authentication
  if (apiKey != null && apiSecret != null) {
   String userpass = apiKey + ':' + apiSecret;
   String basicAuth = "Basic " + new String(Base64.getEncoder().encode(userpass.getBytes()));
   connection.setRequestProperty("Authorization", basicAuth);
  }
  connection.setRequestMethod("GET");
  connection.connect();
  return connection.getResponseCode() >= 200 && connection.getResponseCode() <= 400;
 } catch (Throwable t) {
  throw new RuntimeException(t);
 }
}

代码示例来源：origin: stackoverflow.com

HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
connection.setRequestMethod("HEAD");
int responseCode = connection.getResponseCode();
if (responseCode != 200) {
  // Not OK.
}

// < 100 is undetermined.
// 1nn is informal (shouldn't happen on a GET/HEAD)
// 2nn is success
// 3nn is redirect
// 4nn is client error
// 5nn is server error

代码示例来源：origin: eclipse-vertx/vert.x

public static int getHttpCode() throws IOException {
 return ((HttpURLConnection) new URL("http://localhost:8080")
   .openConnection()).getResponseCode();
}

代码示例来源：origin: Netflix/eureka

public static String readEc2MetadataUrl(MetaDataKey metaDataKey, URL url, int connectionTimeoutMs, int readTimeoutMs) throws IOException {
    HttpURLConnection uc = (HttpURLConnection) url.openConnection();
    uc.setConnectTimeout(connectionTimeoutMs);
    uc.setReadTimeout(readTimeoutMs);
    uc.setRequestProperty("User-Agent", "eureka-java-client");

    if (uc.getResponseCode() != HttpURLConnection.HTTP_OK) {  // need to read the error for clean connection close
      BufferedReader br = new BufferedReader(new InputStreamReader(uc.getErrorStream()));
      try {
        while (br.readLine() != null) {
          // do nothing but keep reading the line
        }
      } finally {
        br.close();
      }
    } else {
      return metaDataKey.read(uc.getInputStream());
    }

    return null;
  }
}

代码示例来源：origin: bumptech/glide

@Before
public void setUp() throws IOException {
 MockitoAnnotations.initMocks(this);
 URL url = new URL("http://www.google.com");
 when(connectionFactory.build(eq(url))).thenReturn(urlConnection);
 when(urlConnection.getInputStream()).thenReturn(stream);
 when(urlConnection.getResponseCode()).thenReturn(200);
 when(glideUrl.toURL()).thenReturn(url);
 fetcher = new HttpUrlFetcher(glideUrl, TIMEOUT_MS, connectionFactory);
}

代码示例来源：origin: apache/storm

@Override
public void handleDataPoints(TaskInfo taskInfo, Collection<DataPoint> dataPoints) {
  try {
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setRequestMethod("POST");
    con.setDoOutput(true);
    try (Output out = new Output(con.getOutputStream())) {
      serializer.serializeInto(Arrays.asList(taskInfo, dataPoints, topologyId), out);
      out.flush();
    }
    //The connection is not sent unless a response is requested
    int response = con.getResponseCode();
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

代码示例来源：origin: stackoverflow.com

HttpURLConnection httpConn = (HttpURLConnection)connection;
InputStream is;
if (httpConn.getResponseCode() >= 400) {
  is = httpConn.getErrorStream();
} else {
  is = httpConn.getInputStream();
}

代码示例来源：origin: stackoverflow.com

URL url = new URL("http://example.com");
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("GET");
connection.connect();

int code = connection.getResponseCode();

代码示例来源：origin: eclipse-vertx/vert.x

private int getHttpCode() throws IOException {
 return ((HttpURLConnection) new URL("http://localhost:8080")
   .openConnection()).getResponseCode();
}

代码示例来源：origin: micronaut-projects/micronaut-core

/**
 * @param metaDataKey         The metadata key
 * @param url                 The URL
 * @param connectionTimeoutMs The connection timeout
 * @param readTimeoutMs       The read timeout in milliseconds
 * @return The metadata
 * @throws IOException if there is an error
 */
@SuppressWarnings("EmptyBlock")
static String readEc2MetadataUrl(AmazonInfo.MetaDataKey metaDataKey, URL url, int connectionTimeoutMs, int readTimeoutMs) throws IOException {
  HttpURLConnection uc = (HttpURLConnection) url.openConnection();
  uc.setConnectTimeout(connectionTimeoutMs);
  uc.setReadTimeout(readTimeoutMs);
  if (uc.getResponseCode() != HttpURLConnection.HTTP_OK) {  // need to read the error for clean connection close
    try (BufferedReader br = new BufferedReader(new InputStreamReader(uc.getErrorStream()))) {
      while (br.readLine() != null) {
        // do nothing but keep reading the line
      }
    }
  } else {
    return metaDataKey.read(uc.getInputStream());
  }
  return null;
}

代码示例来源：origin: stackoverflow.com

URLConnection connection = url.openConnection();
InputStream is = connection.getInputStream();
if (connection instanceof HttpURLConnection) {
  HttpURLConnection httpConn = (HttpURLConnection) connection;
  int statusCode = httpConn.getResponseCode();
  if (statusCode != 200 /* or statusCode >= 200 && statusCode < 300 */) {
   is = httpConn.getErrorStream();
  }
}

代码示例来源：origin: stackoverflow.com

HttpURLConnection connection = null;
try {
  URL url = new URL(sUrl[0]);
  connection = (HttpURLConnection) url.openConnection();
  connection.connect();
  if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
    return "Server returned HTTP " + connection.getResponseCode()
        + " " + connection.getResponseMessage();
  input = connection.getInputStream();
  output = new FileOutputStream("/sdcard/file_name.extension");

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