Bagaimana cara menulis nilai properti dari berbagai bahasa dalam bentuk aslinya ke file properti di java dengan menyimpan tata letak file?

Punya solusi untuk pertanyaan itu.

Sesuaikan kelas PropertiesConfiguration dan PropertiesConfigurationLayout untuk memenuhi persyaratan.

Tulis ulang metode escapeValue() di PropertiesConfiguration sedemikian rupa untuk mengembalikan nilai properti itu sendiri tanpa karakter escape.

Ganti metode simpan di PropertiesConfigurationLayout.

Di bawah ini diberikan adalah kelas yang memperluas PropertiesConfiguration :

    public class PropertiesConfigurationExtended extends PropertiesConfiguration{

    private static final char[] SEPARATORS = new char[] {'=', ':'};
    private static final char[] WHITE_SPACE = new char[]{' ', '\t', '\f'};
    private static final String ESCAPE = "\\";

    public static class PropertiesWriter extends PropertiesConfiguration.PropertiesWriter{
        private char delimiter;
        /**
         * Constructor.
         */
        public PropertiesWriter(Writer writer, char delimiter)
        {
            super(writer,delimiter);
            this.delimiter = delimiter;
        }
        public void writeProperty(String key, Object value,
                boolean forceSingleLine) throws IOException
        {
            String v;    
            if (value instanceof List)
            {
                List values = (List) value;
                if (forceSingleLine)
                {
                    v = makeSingleLineValue(values);
                }
                else
                {
                    writeProperty(key, values);
                    return;
                }
            }
            else
            {
                v = escapeValue(value);
            }

            write(escapeKey(key));
            write(" = ");
            write(v);

            writeln(null);
        }
        /**
         * Rewrite the escapeValue method to avoid escaping of the given property value.
         *
         * @param value the property value
         * @return the same property value
         */
        private String escapeValue(Object value)
        {
            return String.valueOf(value);
        }
    }
}

Di bawah ini diberikan adalah kelas yang memperluas PropertiesConfigurationLayout :

public class PropertiesConfigurationLayoutExtended extends PropertiesConfigurationLayout{

    public PropertiesConfigurationLayoutExtended(PropertiesConfigurationExtended config) {
        super(config);
    }
    public void save(Writer out) throws ConfigurationException
    {
        try
        {
            char delimiter = getConfiguration().isDelimiterParsingDisabled() ? 0
                    : getConfiguration().getListDelimiter();
            PropertiesConfigurationExtended.PropertiesWriter writer = new PropertiesConfigurationExtended.PropertiesWriter(
                    out, delimiter);
            if (getHeaderComment() != null)
            {
                writer.writeln(getCanonicalHeaderComment(true));
                writer.writeln(null);
            }

            for (Iterator it = getKeys().iterator(); it.hasNext();)
            {
                String key = (String) it.next();
                if (getConfiguration().containsKey(key))
                {
                    // Output blank lines before property
                    for (int i = 0; i < getBlancLinesBefore(key); i++)
                    {
                        writer.writeln(null);
                    }
                    // Output the comment
                    if (getComment(key) != null)
                    {
                        writer.writeln(getCanonicalComment(key, true));
                    }
                    // Output the property and its value
                    boolean singleLine = (isForceSingleLine() || isSingleLine(key))
                            && !getConfiguration().isDelimiterParsingDisabled();
                    writer.writeProperty(key, getConfiguration().getProperty(
                            key), singleLine);
                }
            }
            writer.flush();
        }
        catch (IOException ioex)
        {
            throw new ConfigurationException(ioex);
        }
    }
}

Kelas untuk menulis properti ke file:

    File file = new File("base_ch.properties");
    PropertiesConfigurationExtended config = new PropertiesConfigurationExtended();
    PropertiesConfigurationLayoutExtended layout = new PropertiesConfigurationLayoutExtended(config);

    try(InputStreamReader in = new InputStreamReader(new FileInputStream(file), "UTF-8"))
    {
        layout.load(in);    
        OutputStreamWriter out =new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
        config.setProperty("key","アカウント ナビゲーション コンポーネント");
        layout.save(out, false));       
    }
    catch (ConfigurationException | IOException e) {
        e.printStackTrace();
    }

Jika ini hanya tentang menambahkan properti ke file yang ada maka Anda bisa menambahkannya:

    Properties props = new Properties();
    OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream("file", true), "UTF-8");
    props.put("key", "アカウント ナビゲーション コンポーネント");
    props.store(out, null);