Java Code Examples for org.apache.commons.lang3.StringUtils.trimToNull()

private String buildConditions(String prefix, List<String> conditions, List<String> operators) {
	StringBuilder builder = new StringBuilder();
	if (conditions.size()>0) {
		if (StringUtils.trimToNull(prefix)!=null) {
			builder.append(" ").append(prefix).append(" ");
		}
		for (int i=0; i<conditions.size(); i++) {
			String condition = conditions.get(i);
			builder.append(condition).append(" ");
			if (i<conditions.size()-1) {
				String operator = StringUtils.trimToNull(operators.get(i));
				if (operator!=null) {
					builder.append(operator).append(" ");
				}
			}
		}
	}
	return builder.toString();
}
 

public static String getFileKey(String name) {
    String prefix = "/upload/" + DateKit.dateFormat(new Date(), "yyyy/MM");
    if (!new File(AttachController.CLASSPATH + prefix).exists()) {
        new File(AttachController.CLASSPATH + prefix).mkdirs();
    }

    name = StringUtils.trimToNull(name);
    if (name == null) {
        return prefix + "/" + UUID.UU32() + "." + null;
    } else {
        name = name.replace('\\', '/');
        name = name.substring(name.lastIndexOf("/") + 1);
        int index = name.lastIndexOf(".");
        String ext = null;
        if (index >= 0) {
            ext = StringUtils.trimToNull(name.substring(index + 1));
        }
        return prefix + "/" + UUID.UU32() + "." + (ext == null ? null : (ext));
    }
}
 

@Override
public String[] deserialize(JsonParser jsonParser, DeserializationContext context) throws IOException {
    final List<String> list = new ArrayList<>();
    final JsonNode node = jsonParser.readValueAsTree();
    if (node.isArray()) {
        final Iterator elements = node.elements();
        while (elements.hasNext()) {
            final JsonNode childNode = (JsonNode) elements.next();
            final String value = StringUtils.trimToNull(childNode.asText());
            if (value != null) {
                list.add(value);
            }
        }
    }
    if (list.size() == 0) {
        return null;
    } else {
        return list.toArray(new String[list.size()]);
    }
}
 

public Map<String, String> getFilterAttributes() {

        if (uriInfo != null) {
            MultivaluedMap<String, String> queryParams = uriInfo.getQueryParameters();

            for (Map.Entry<String, List<String>> queryParam : queryParams.entrySet()) {
                String queryParamAttribute = queryParam.getKey();
                if (StringUtils.isBlank(queryParamAttribute) || !queryParamAttribute.startsWith("filter-")) {
                    continue;
                }
                queryParamAttribute = queryParamAttribute.substring("filter-".length(), queryParamAttribute.length());
                String filterVal = StringUtils.trimToNull(queryParam.getValue().get(0));
                if (filterVal != null) {
                    filterAttributes.put(queryParamAttribute, filterVal);
                }
            }
        }
        return filterAttributes;
    }
 

/**
 * Returms the content type of a response given the content-type
 * @param fullContentType the content-type (from request.getContentType()), also with charset or other attributes like "text/html; charset=UTF-8"
 * @return an integer for the type of the content
 */
public int getDocumentType(String fullContentType) {
	if (StringUtils.trimToNull(fullContentType)==null) {
		return CONTENT_UNKNOWN;
	}
	String[] parts = fullContentType.toLowerCase().split("[; ]", 2);
	String contentType = parts[0];
	// TODO application/x-www-form-urlencoded could actually ask for an image, so it isn't strictly correct !
	if ("text/html".equals(contentType) || "application/xhtml+xml".equals(contentType) || "application/x-www-form-urlencoded".equals(contentType)) {
		return CONTENT_DOCUMENT;
	}
	if ("text/xml".equals(contentType)) {
		return CONTENT_XML;
	}
	if ("application/javascript".equals(contentType) || "application/x-javascript".equals(contentType) || "text/javascript".equals(contentType)) {
		return CONTENT_JAVASCRIPT;
	}
	if ("text/css".equals(contentType)) {
		return CONTENT_CSS;
	}
	if (contentType.startsWith("image/")) {
		return CONTENT_IMAGE;
	}
	return CONTENT_OTHER;
}
 

private void parseRecords(InputStream stream) throws IOException {
    LineIterator it = IOUtils.lineIterator(buffer(stream), IabFile.CHARSET);
    while (it.hasNext()) {
        String record = StringUtils.trimToNull(it.nextLine());
        if (record != null) {
            if (isCidrNotation(record)) {
                cidrAddresses.add(subnetInfo(record));
            } else {
                plainAddresses.add(record);
            }
        }
    }
}
 

@RequestMapping("/savezhoubao")
@SuppressWarnings("unchecked")
public void savezhoubao(String content) {
    if (StringUtils.isNotEmpty(content)) {
        content = StringUtils.trimToNull(content);
    }
    redisTemplate.opsForValue().set("zhoubao", content);
}
 

@JsonCreator
public MigrationCommand(@JsonProperty("version") String version,
                        @JsonProperty("description") String description,
                        @JsonProperty("author") String author,
                        @JsonProperty("command") Map<String, Object> command) {
    if (StringUtils.trimToNull(version) == null || StringUtils.trimToNull(description) == null || command == null)
        throw new IllegalStateException("A migration command requires at least a version, description and a command!");

    this.version = version;
    this.description = description;
    this.author = Optional.ofNullable(author).orElse(Migration.DEFAULT_AUTHOR);
    this.command = new BasicDBObject(command);
}
 

@Override
public String getVersion(final Map<String, String> parameters) throws Exception {
	final String page = StringUtils.trimToEmpty(getConfluencePublicResource(parameters, "/forgotuserpassword.action"));
	final String ajsMeta = "ajs-version-number\" content=";
	final int versionIndex = Math.min(page.length(), page.indexOf(ajsMeta) + ajsMeta.length() + 1);
	return StringUtils.trimToNull(page.substring(versionIndex, Math.max(versionIndex, page.indexOf('\"', versionIndex))));
}
 

/**
 * Search the SonarQube's projects matching to the given criteria. Name, display name and description are
 * considered.
 * 
 * @param node
 *            the node to be tested with given parameters.
 * @param criteria
 *            the search criteria.
 * @return project names matching the criteria.
 */
@GET
@Path("{node}/{criteria}")
@Consumes(MediaType.APPLICATION_JSON)
public List<SonarProject> findAllByName(@PathParam("node") final String node, @PathParam("criteria") final String criteria) throws IOException {

	// Prepare the context, an ordered set of projects
	final Format format = new NormalizeFormat();
	final String formatCriteria = format.format(criteria);
	final Map<String, String> parameters = pvResource.getNodeParameters(node);

	// Get the projects and parse them
	final List<SonarProject> projectsRaw = getProjects(parameters);
	final Map<String, SonarProject> result = new TreeMap<>();
	for (final SonarProject project : projectsRaw) {
		final String name = StringUtils.trimToNull(project.getName());
		final String key = project.getKey();

		// Check the values of this project
		if (format.format(name).contains(formatCriteria) || format.format(key).contains(formatCriteria)) {

			// Retrieve description and display name
			result.put(project.getName(), project);
		}
	}
	return new ArrayList<>(result.values());
}
 

private boolean isLocale(String locale) {
    if (StringUtils.trimToNull(locale)==null) {
    	return false;
    }
    List<String> locales = config.getLocaleStrings();
    return locales.contains(locale);
}
 

public String getSql() {
	StringBuilder builder = new StringBuilder();
	if (select!=null) {
		builder.append(select).append(" ");
		if (from!=null) {
			builder.append("from ").append(from).append(" ");
		}
	} else if (update!=null) {
		builder.append(update).append(" ");
		if (set!=null) {
			builder.append(set).append(" ");
		}
	}
	builder.append(joins);
	builder.append(buildConditions("where", whereConditions, whereOperators));
	if (StringUtils.trimToNull(groupby)!=null) {
		builder.append(" ").append(groupby);
	}
	builder.append(buildConditions("having", havingConditions, havingOperators));
	if (StringUtils.trimToNull(orderAndLimit)!=null) {
		builder.append(" ").append(orderAndLimit);
	}
	if (log.isDebugEnabled()) {
		log.debug(builder.toString());
	}
	return builder.toString();
}
 

/**
 * Extract the address from a url, without schema and path but with port
 * @param url an url like http://www.myserver.net:8080/context/path or //www.myserver.net:8080/context/path
 * @return the host[:port] like www.myserver.net:8080, or ""
 */
public String extractAddress(String url) {
	if (StringUtils.trimToNull(url)!=null) {
		try {
			int pos = url.indexOf("//");
			pos = (pos<0?0:pos+2);
			int pos2 = url.indexOf("/", pos);
			pos2 = (pos2<0?url.length():pos2);
			return url.substring(pos, pos2);
		} catch (Exception e) {
			log.error("Can't extract address from {}", url);
		}
	}
	return "";
}
 

/**
 * Returns the column name if any, the column data otherwise.
 * @return name or data or null
 */
public String getNameOrData() {
	String result = StringUtils.trimToNull(getName());
	if (result==null) {
		result = StringUtils.trimToNull(getData());
	}
	return result;
}
 

/**
 * 解析处理注释，增加 getXxxText() 方法
 *    注释格式范例：
 *      @enum 0: 有效期; 1: 无效
 */
@Override
public boolean modelGetterMethodGenerated(Method method, TopLevelClass topLevelClass,
                                          IntrospectedColumn introspectedColumn,
                                          IntrospectedTable introspectedTable,
                                          ModelClassType modelClassType) {

    String remarks = introspectedColumn.getRemarks();
    int jdbcType = introspectedColumn.getJdbcType();

    remarks = StringUtils.trimToNull(remarks);

    if (remarks == null) {
        return true;
    }

    if (!remarks.contains("@enum")) {
        return true;
    }

    String annotation = remarks.substring(remarks.indexOf("@enum") + 5);
    String[] items = StringUtils.split(annotation, ';');

    StringBuilder mapInitSb = new StringBuilder("new HashMap<Object, String>(){{");
    for (String item : items) {
        if (!item.contains(":")) {
            continue;
        }
        String[] kv = item.split(":");
        String k = StringUtils.trim(kv[0]);
        String v = StringUtils.trim(kv[1]);
        mapInitSb.append("put(");
        if (jdbcType == Types.TINYINT) {
            mapInitSb.append("(byte)");
        }
        mapInitSb.append(k).append(",")
                .append("\"").append(v).append("\");");
    }
    mapInitSb.append("}}");

    // 增加常量
    String fieldName = String.format("%sMap", introspectedColumn.getJavaProperty());

    Field field = new Field(
            fieldName,
            new FullyQualifiedJavaType("java.util.HashMap<Object, String>")
    );
    field.setVisibility(JavaVisibility.PRIVATE);
    field.setStatic(true);
    field.setFinal(true);
    field.setInitializationString(mapInitSb.toString());

    topLevelClass.addField(field);


    // 增加方法
    Method textMethod = new Method(String.format("%sText", method.getName()));
    textMethod.setReturnType(new FullyQualifiedJavaType(String.class.getCanonicalName()));
    textMethod.setVisibility(JavaVisibility.PUBLIC);
    if (jdbcType == Types.TINYINT) {
        textMethod.addBodyLine(String.format("return %s.get((byte)this.%s);", fieldName, introspectedColumn.getJavaProperty()));
    } else {
        textMethod.addBodyLine(String.format("return %s.get(this.%s);", fieldName, introspectedColumn.getJavaProperty()));
    }

    remarks = remarks.replaceAll("\n", "\\\\n").replaceAll("\"", "\\\\\"");
    textMethod.addAnnotation(
        String.format("@ApiModelProperty(value = \"%s\")", remarks)
    );

    topLevelClass.addImportedType(new FullyQualifiedJavaType(HashMap.class.getCanonicalName()));
    topLevelClass.addMethod(textMethod);

    return true;
}
 

@Override
public String getVersion(final Map<String, String> parameters) throws Exception {
	return StringUtils.trimToNull(
			getTags(ObjectUtils.defaultIfNull(getVCloudResource(parameters, "/admin"), "<a><Description/></a>"), "Description").item(0)
					.getTextContent());
}
 

@Override
public void afterPropertiesSet() throws Exception {

    Validate.notEmpty(this.configs, "configs is required");

    routeEnv = StringUtils.trimToNull(ResourceUtils.get(KafkaConst.PROP_ENV_ROUTE));

    if (routeEnv != null)
        log.info("current route Env value is:", routeEnv);
    //移除错误的或者未定义变量的配置
    Set<String> propertyNames = configs.stringPropertyNames();
    for (String propertyName : propertyNames) {
        String value = configs.getProperty(propertyName);
        if (StringUtils.isBlank(value) || value.trim().startsWith("$")) {
            configs.remove(propertyName);
            log.warn("remove prop[{}],value is:{}", propertyName, value);
        }
    }

    if (!configs.containsKey(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG)) {
        configs.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
            StringSerializer.class.getName()); // key serializer
    }

    if (!configs.containsKey(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG)) {
        configs.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,
            KyroMessageSerializer.class.getName());
    }

    if (!configs.containsKey(ProducerConfig.PARTITIONER_CLASS_CONFIG)) {
        configs.put(ProducerConfig.PARTITIONER_CLASS_CONFIG,
            DefaultPartitioner.class.getName());
    }

    //默认重试一次
    if (!configs.containsKey(ProducerConfig.RETRIES_CONFIG)) {
        configs.put(ProducerConfig.RETRIES_CONFIG, "1");
    }

    if (!configs.containsKey(ProducerConfig.COMPRESSION_TYPE_CONFIG)) {
        configs.put(ProducerConfig.COMPRESSION_TYPE_CONFIG, "snappy");
    }

    if (!configs.containsKey("client.id")) {
        configs.put("client.id",
            (producerGroup == null ? "" : "_" + producerGroup) + NodeNameHolder.getNodeId());
    }

    KafkaProducer<String, Object> kafkaProducer = new KafkaProducer<String, Object>(configs);

    this.producer = new DefaultTopicProducer(kafkaProducer, defaultAsynSend);

    //hanlder
    if (StringUtils.isNotBlank(monitorZkServers)) {
        Validate.notBlank(producerGroup,
            "enable producer monitor property[producerGroup] is required");
        this.producer.addEventHandler(new SendCounterHandler(producerGroup, monitorZkServers));
    }
    if (delayRetries > 0) {
        this.producer.addEventHandler(
            new SendErrorDelayRetryHandler(producerGroup, kafkaProducer, delayRetries));
    }
}
 

@Override
public void afterPropertiesSet() throws Exception {

    Validate.isTrue(topicHandlers != null && topicHandlers.size() > 0, "at latest one topic");
    // 当前状态
    if (status.get() > 0)
        return;

    routeEnv = StringUtils.trimToNull(ResourceUtils.get(KafkaConst.PROP_ENV_ROUTE));

    if (routeEnv != null) {
        logger.info("current route Env value is:", routeEnv);
        Map<String, MessageHandler> newTopicHandlers = new HashMap<>();
        for (String origTopicName : topicHandlers.keySet()) {
            newTopicHandlers.put(routeEnv + "." + origTopicName,
                topicHandlers.get(origTopicName));
        }
        topicHandlers = newTopicHandlers;
    }

    // make sure that rebalance.max.retries * rebalance.backoff.ms >
    // zookeeper.session.timeout.ms.
    configs.put("rebalance.max.retries", "5");
    configs.put("rebalance.backoff.ms", "1205");
    configs.put("zookeeper.session.timeout.ms", "6000");

    configs.put("key.deserializer", StringDeserializer.class.getName());

    if (!configs.containsKey("value.deserializer")) {
        configs.put("value.deserializer", KyroMessageDeserializer.class.getName());
    }

    if (useNewAPI) {
        if ("smallest".equals(configs.getProperty("auto.offset.reset"))) {
            configs.put("auto.offset.reset", "earliest");
        } else if ("largest".equals(configs.getProperty("auto.offset.reset"))) {
            configs.put("auto.offset.reset", "latest");
        }
    } else {
        // 强制自动提交
        configs.put("enable.auto.commit", "true");
    }

    // 同步节点信息
    groupId = configs.get(org.apache.kafka.clients.consumer.ConsumerConfig.GROUP_ID_CONFIG)
        .toString();

    logger.info("\n===============KAFKA Consumer group[{}] begin start=================\n",
        groupId);

    consumerId = NodeNameHolder.getNodeId();
    //
    configs.put("consumer.id", consumerId);

    // kafka 内部处理 consumerId ＝ groupId + "_" + consumerId
    consumerId = groupId + "_" + consumerId;
    //
    if (!configs.containsKey("client.id")) {
        configs.put("client.id", consumerId);
    }
    //
    start();

    logger.info(
        "\n===============KAFKA Consumer group[{}],consumerId[{}] start finished!!=================\n",
        groupId, consumerId);
}
 

static String getString(Configuration config, String key) {
    String value = StringUtils.trimToNull(config.getString(key));
    return value == null ? NA : value;
}
 

public String getFilter() {
    return StringUtils.trimToNull(filter);
}