Java Strings.isNullOrEmpty方法代码示例

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
private static Operation.Builder newBaseOperation(String logName, int responseCode) {
  Operation.Builder res = Operation
      .newBuilder()
      .setConsumerId("api_key:" + TEST_API_KEY)
      .setImportance(Importance.LOW)
      .setOperationId(TEST_OPERATION_ID)
      .setOperationName(TEST_OPERATION_NAME)
      .setEndTime(REALLY_EARLY)
      .setStartTime(REALLY_EARLY)
      .putLabels(OperationInfo.SCC_USER_AGENT, "ESP")
      .putLabels(OperationInfo.SCC_SERVICE_AGENT, KnownLabels.SERVICE_AGENT)
      .putLabels(KnownLabels.SCC_PLATFORM.getName(), "Unknown");
  if (!Strings.isNullOrEmpty(logName)) {
    res.addLogEntries(newTestLogEntry(logName, responseCode));
  }
  return res;
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
/**
 * Starts the server, which will listen to the given path going forward.
 * @throws Exception
 */
public void start() throws Exception {
  logger.info("Starting API server on {}:{}{}", HOST, port, contextPath);
  
  server = new Server();
  server.addListener(String.format("%s:%d", HOST, port));
  
  ServletHttpContext context = (ServletHttpContext) server.getContext(contextPath);
  
  context.addServlet(SERVLET_NAME, SERVLET_PATH, ServletContainer.class.getName());
  context.getServletHandler().getServletHolder(SERVLET_NAME)
      .setInitParameter(INIT_PARAM_PACKAGES, getClass().getPackage().getName());
  
  if (!Strings.isNullOrEmpty(adsPropertiesPath)) {
    context.getServletHandler().getServletHolder(SERVLET_NAME)
        .setInitParameter(INIT_PARAM_ADS_PROPERTIES, adsPropertiesPath);
  }
  if (!Strings.isNullOrEmpty(propertiesPath)) {
    context.getServletHandler().getServletHolder(SERVLET_NAME)
        .setInitParameter(INIT_PARAM_PROPERTIES, propertiesPath);
  }
  
  server.start();
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
private static String checkIssuerAudiences(
    ApiIssuerConfigs issuerConfigs, ApiIssuerAudienceConfig issuerAudiences) {
  if (!issuerAudiences.isEmpty()) {
    return null;
  }
  for (Map.Entry<String, Collection<String>> entry : issuerAudiences.asMap().entrySet()) {
    if (!issuerConfigs.hasIssuer(entry.getKey())) {
      return "cannot specify audiences for unknown issuer '" + entry.getKey() + "'";
    }
    for (String audience : entry.getValue()) {
      if (Strings.isNullOrEmpty(audience)) {
        return "issuer '" + entry.getKey() + "' cannot have null or blank audiences";
      }
    }
  }
  return null;
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
private String retrieveReferenceBases(Genomics genomics, Annotation annotation) throws IOException {
  StringBuilder b = new StringBuilder();
  String pageToken = "";
  while (true) {
    // TODO: Support full request parameterization for Paginator.References.Bases.
    ListBasesResponse response = genomics.references().bases()
        .list(annotation.getReferenceId())
        .setStart(annotation.getStart())
        .setEnd(annotation.getEnd())
        .setPageToken(pageToken)
        .execute();
    b.append(response.getSequence());
    pageToken = response.getNextPageToken();
    if (Strings.isNullOrEmpty(pageToken)) {
      break;
    }
  }
  return b.toString();
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
@Override
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) {
	final String authToken = request.getHeader(TOKEN_HEADER);
	if (Strings.isNullOrEmpty(authToken)) {
		throw new RuntimeException("Invaild auth token");
	}

	return getAuthenticationManager().authenticate(new FirebaseAuthenticationToken(authToken));
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
/**
 * Tests if a URL parameter is empty and throws an exception if that's the case. Empty here means
 * either <code>null</code>, an empty string or and empty list.
 */
private static void requireParam(String name, Object value) throws KeywordOptimizerException {
  if (value == null
      || (value instanceof Collection<?> && ((Collection<?>) value).isEmpty())
      || (value instanceof String && Strings.isNullOrEmpty((String) value))) {
    throw new KeywordOptimizerException("Parameter '" + name + "' is required");
  }
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
private static String checkIssuers(ApiIssuerConfigs issuers) {
  if (!issuers.isSpecified()) {
    return null;
  }
  for (IssuerConfig issuer : issuers.asMap().values()) {
    if (Strings.isNullOrEmpty(issuer.getName())) {
      return "issuer name cannot be blank";
    } else if (Strings.isNullOrEmpty(issuer.getIssuer())) {
      return "issuer '" + issuer.getName() + "' cannot have a blank issuer value";
    }
  }
  return null;
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
/**
 * <p>Adapt a single instance of an HBase {@link HColumnDescriptor} to
 * an instance of {@link com.google.bigtable.admin.table.v1.ColumnFamily.Builder}.</p>
 *
 * <p>NOTE: This method does not set the name of the ColumnFamily.Builder.  The assumption is
 * that the CreateTableRequest or CreateColumFamilyRequest takes care of the naming.  As of now
 * (3/11/2015), the server insists on having a blank name.</p>
 */
public ColumnFamily.Builder adapt(HColumnDescriptor columnDescriptor) {
  throwIfRequestingUnknownFeatures(columnDescriptor);
  throwIfRequestingUnsupportedFeatures(columnDescriptor);

  ColumnFamily.Builder resultBuilder = ColumnFamily.newBuilder();
  String gcExpression = buildGarbageCollectionExpression(columnDescriptor);
  if (!Strings.isNullOrEmpty(gcExpression)) {
    resultBuilder.setGcExpression(gcExpression);
  }
  return resultBuilder;
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
public AppEngineLocationSelectorItem(@NotNull Location location) {
  this.location = location;

  // TODO(alexsloan) when b/33458530 is addressed, we can just use location.getLocationId()
  String locationIdLabel =
      location.getLabels() != null
          ? location.getLabels().get("cloud.googleapis.com/region")
          : null;
  if (Strings.isNullOrEmpty(location.getLocationId())
      && !Strings.isNullOrEmpty(locationIdLabel)) {
    location.setLocationId(locationIdLabel);
  }
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
@ProcessElement
public void processElement(DoFn<String, String>.ProcessContext c) throws Exception {
  String readGroupSetId = c.element();
  String referenceSetId = GenomicsUtils.getReferenceSetId(readGroupSetId, auth);
  if (Strings.isNullOrEmpty(referenceSetId)) {
    throw new IllegalArgumentException("No ReferenceSetId associated with ReadGroupSetId "
        + readGroupSetId
        + ". All ReadGroupSets in given input must have an associated ReferenceSet.");
  }
  if (!referenceSetIdForAllReadGroupSets.equals(referenceSetId)) {
    throw new IllegalArgumentException("ReadGroupSets in given input must all be associated with"
        + " the same ReferenceSetId : " + referenceSetId);
  }
  c.output(readGroupSetId);
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
/**
 * Matches Google Cloud Storage's delimiter filtering.
 *
 * @param items the mutable list of items to filter. Items matching the filter conditions will be
 *     removed from this list.
 * @param bucketName the bucket name to filter for.
 * @param prefix the object name prefix to filter for.
 * @param delimiter the delimiter to filter on.
 */
private void filter(
    List<GoogleCloudStorageItemInfo> items,
    String bucketName,
    @Nullable String prefix,
    @Nullable String delimiter) {
  prefix = prefix == null ? "" : prefix;
  if (Strings.isNullOrEmpty(delimiter)) {
    return;
  }

  HashSet<String> dirs = new HashSet<String>();
  Iterator<GoogleCloudStorageItemInfo> itr = items.iterator();
  while (itr.hasNext()) {
    String objectName = itr.next().getObjectName();

    // Remove if doesn't start with the prefix.
    if (!objectName.startsWith(prefix)) {
      itr.remove();
    } else {
      // Retain if missing the delimiter after the prefix.
      int firstIndex = objectName.indexOf(delimiter, prefix.length());
      if (firstIndex != -1) {
        // Remove if the first occurrence of the delimiter after the prefix isn't the last.
        // Remove if the last occurrence of the delimiter isn't the end of the string.
        int lastIndex = objectName.lastIndexOf(delimiter);
        if (firstIndex != lastIndex) {
          itr.remove();
          dirs.add(objectName.substring(0, firstIndex + 1));
        } else if (lastIndex != objectName.length() - 1) {
          itr.remove();
          dirs.add(objectName.substring(0, firstIndex + 1));
        }
      }
    }
  }
  if (inferImplicitDirectoriesEnabled) {
    for (String dir : dirs) {
      items.add(
          GoogleCloudStorageImpl.createItemInfoForInferredDirectory(
              new StorageResourceId(bucketName, dir)));
    }
  }
}
 

import com.google.api.client.util.Strings; //导入方法依赖的package包/类
@PreAuthorize("hasRole('ROLE_ADMIN') or hasPermission(#groupCode, 'users_create')")
@RequestMapping(value = "/{groupCode}/users", method = RequestMethod.POST)
public List<CreateUsersView> createUsers(@PathVariable("groupCode") String groupCode,
                                         @RequestParam(value = "preview", required = false) Boolean preview,
                                         @RequestBody String usersInfo) throws FormException {
    final ArrayList<CreateUsersView> usersViews = new ArrayList<>();

    final ArrayList<String> wrongLines = new ArrayList<>();

    for (final String line : usersInfo.split("\\r?\\n")) {
        final CreateUsersView teamView = new CreateUsersView();

        for (final String part : line.split("(?<=[^\\\\]);")) {
            String cleanPart = part.trim().replaceAll("\\\\;", ";");
            if (cleanPart.startsWith("@TAG:")) {
                final String tags = cleanPart.replace("@TAG:", "").trim();
                teamView.getTags().addAll(Arrays.asList(tags.split(" +")));
            } else if (Strings.isNullOrEmpty(teamView.getName())) {
                teamView.setName(cleanPart);
            } else {
                teamView.getUsers().add(cleanPart);
            }
        }

        if (Strings.isNullOrEmpty(teamView.getName()) || teamView.getUsers().isEmpty()) {
            wrongLines.add(line);
        } else {
            final int lastIndex = teamView.getUsers().size() - 1;
            teamView.setCode(teamPrefix + teamView.getUsers().get(lastIndex));
            teamView.getUsers().remove(lastIndex);

            usersViews.add(teamView);
        }
    }

    if (!wrongLines.isEmpty()) {
        throw new FormException().addError("usersdata", wrongLines.stream().collect(Collectors.joining("\n")));
    }

    if (preview == null || !preview) {
        return groupsDao.createUsersForGroup(groupCode, usersViews);
    }

    return usersViews;
}