Java Properties類代碼示例

import org.apache.felix.scr.annotations.Properties; //導入依賴的package包/類
@Activate
public void active() throws IOException {
	gav2isPluginFile = repository.getRootDir().resolve("gav2isPlugin.properties");
	if (Files.exists(gav2isPluginFile)) {
		java.util.Properties properties = new java.util.Properties();
		try (Reader reader = new InputStreamReader(Files.newInputStream(gav2isPluginFile), "UTF-8")) {
			properties.load(reader);
		}
		properties.forEach((k, v) -> gav2isPlugin.put(String.valueOf(k), Boolean.valueOf(String.valueOf(v))));
	} else {
		PathUtils.tryMkdirsParent(gav2isPluginFile);
		saveGav2isPlugin();
	}
}
 

import org.apache.felix.scr.annotations.Properties; //導入依賴的package包/類
private void saveGav2isPlugin() {
	synchronized (gav2isPluginFile) {
		java.util.Properties properties = new java.util.Properties();
		gav2isPlugin.forEach((k, v) -> properties.put(k, String.valueOf(v)));
		try (Writer writer = new OutputStreamWriter(Files.newOutputStream(gav2isPluginFile), "UTF-8")) {
			properties.store(writer, "org.to2mbn.lolixl.plugin.impl.gav2isPlugin");
		} catch (IOException e) {
			throw new UncheckedIOException(e);
		}
	}
}
 

import org.apache.felix.scr.annotations.Properties; //導入依賴的package包/類
/**
 * Add dc:subject property to items pointing to entities extracted by NLP
 * engines in the default chain. Given a node and a TripleCollection
 * containing fise:Enhancements about that node dc:subject properties are
 * added to an item pointing to entities referenced by those enhancements if
 * the enhancement confidence value is above a threshold.
 *
 * @param node
 * @param metadata
 */
private void addSubjects(MGraph targetGraph, UriRef itemRef, TripleCollection metadata) {
    final GraphNode enhancementType = new GraphNode(TechnicalClasses.ENHANCER_ENHANCEMENT, metadata);
    final Set<UriRef> entities = new HashSet<UriRef>();
    // get all the enhancements
    final Iterator<GraphNode> enhancements = enhancementType.getSubjectNodes(RDF.type);
    while (enhancements.hasNext()) {
        final GraphNode enhhancement = enhancements.next();
        final Iterator<Literal> confidenceLiterals = enhhancement.getLiterals(org.apache.stanbol.enhancer.servicesapi.rdf.Properties.ENHANCER_CONFIDENCE);
        //look the confidence value for each enhancement
        double enhancementConfidence = confidenceLiterals.hasNext() ? 
                LiteralFactory.getInstance().createObject(Double.class,
                (TypedLiteral) confidenceLiterals.next())  : 1;
        if (enhancementConfidence >= confidenceThreshold) {
            // get entities referenced in the enhancement 
            final Iterator<Resource> referencedEntities = enhhancement.getObjects(org.apache.stanbol.enhancer.servicesapi.rdf.Properties.ENHANCER_ENTITY_REFERENCE);
            while (referencedEntities.hasNext()) {
                final UriRef entity = (UriRef) referencedEntities.next();
                // Add dc:subject to the patent for each referenced entity
                targetGraph.add(new TripleImpl(itemRef, DC.subject, entity));
                entities.add(entity);
            }
        }

    }
    for (UriRef uriRef : entities) {
        // We don't get the entity description directly from metadata
        // as the context there would include
        addResourceDescription(uriRef, targetGraph);
    }
}
 

import org.apache.felix.scr.annotations.Properties; //導入依賴的package包/類
/**
 * Send an email.
 *
 * @param recipient The recipient of the email
 * @param subject The subject of the email.
 * @param body The body of the email.
 * @return true if the email was sent successfully.
 */
public boolean sendMail(final String recipient, final String subject, final String body) {
    boolean result = false;

    // Create a Properties object to contain connection configuration information.
    java.util.Properties props = System.getProperties();
    props.put("mail.transport.protocol", "smtp");
    props.put("mail.smtp.port", getPort());

    // Set properties indicating that we want to use STARTTLS to encrypt the connection.
    // The SMTP session will begin on an unencrypted connection, and then the client
    // will issue a STARTTLS command to upgrade to an encrypted connection.
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.starttls.required", "true");

    // Create a Session object to represent a mail session with the specified properties.
    Session session = Session.getDefaultInstance(props);

    // Create a message with the specified information.
    MimeMessage msg = new MimeMessage(session);

    Transport transport = null;

    // Send the message.
    try {
        msg.setFrom(new InternetAddress(getSender()));
        msg.setRecipient(Message.RecipientType.TO, new InternetAddress(recipient));
        msg.setSubject(subject);
        msg.setContent(body, "text/plain");

        // Create a transport.
        transport = session.getTransport();

        // Connect to email server using the SMTP username and password you specified above.
        transport.connect(getHost(), getSmtpUsername(), getUnobfuscatedSmtpPassword());

        // Send the email.
        transport.sendMessage(msg, msg.getAllRecipients());

        result = true;
    } catch (Exception ex) {
        LOGGER.error("The email was not sent.", ex);
    } finally {
        // Close and terminate the connection.
        try {
            transport.close();
        } catch (MessagingException e) {
            LOGGER.error("Could not close transport", e);
        }
    }

    return result;
}