Examples with GsonBuilder com.google.gson.GsonBuilder used on opensource projects

Example 96 with GsonBuilder

use of com.google.gson.GsonBuilder in project Java-Tutorial by gpcodervn.

the class JsonAdapterExample method main.

public static void main(String[] args) {
    final GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeAdapter(AmazonBook.class, new CustomTypeAdapter());
    gsonBuilder.setPrettyPrinting();
    final Gson gson = gsonBuilder.create();
    final AmazonBook book = new AmazonBook();
    book.setTitle("Head First Design Patterns");
    book.setIsbn10("0596007124");
    book.setIsbn13("978-0596007126");
    book.setPrice(52.41);
    Calendar c = Calendar.getInstance();
    c.set(2004, Calendar.OCTOBER, 1);
    book.setPublishedDate(c.getTime());
    String[] authors = new String[] { "Eric Freeman", "Bert Bates", "Kathy Sierra", "Elisabeth Robson" };
    book.setAuthors(authors);
    System.out.println("Convert Book object to JSON string: ");
    final String json = gson.toJson(book);
    System.out.println(json);
    System.out.println("Convert JSON String to Book object: ");
    final AmazonBook parsedBook1 = gson.fromJson(json, AmazonBook.class);
    System.out.println(parsedBook1);
}

Example 97 with GsonBuilder

use of com.google.gson.GsonBuilder in project Java-Tutorial by gpcodervn.

the class SerializedNameExample method main.

public static void main(String[] args) {
    final GsonBuilder builder = new GsonBuilder();
    final Gson gson = builder.create();
    final Student student = new Student(1, "GP Coder", "Java Dev");
    final String json = gson.toJson(student);
    System.out.println("Json: " + json);
    final Student student2 = gson.fromJson(json, Student.class);
    System.out.println("Java Object: " + student2);
}

Example 98 with GsonBuilder

use of com.google.gson.GsonBuilder in project Java-Tutorial by gpcodervn.

the class LargeDataSerializerStreamingTest method main.

public static void main(final String[] args) throws IOException {
    StopWatch stopWatch = new StopWatch();
    stopWatch.start();
    // Configure GSON
    final GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeAdapter(LargeData.class, new LargeDataSerializer());
    gsonBuilder.setPrettyPrinting();
    final Gson gson = gsonBuilder.create();
    final LargeData data = new LargeData();
    data.create(10485760);
    final File dir = new File("data");
    dir.mkdirs();
    try (OutputStream os = new FileOutputStream(new File(dir, "outputSerialiserStreaming.json"));
        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"))) {
        gson.toJson(data, out);
    }
    stopWatch.stop();
    System.out.println("Done in " + stopWatch.getTime());
}

Example 99 with GsonBuilder

use of com.google.gson.GsonBuilder in project Java-Tutorial by gpcodervn.

the class LargeDataSerializerTest method main.

public static void main(final String[] args) throws IOException {
    StopWatch stopWatch = new StopWatch();
    stopWatch.start();
    // Configure GSON
    final GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeAdapter(LargeData.class, new LargeDataSerializer());
    gsonBuilder.setPrettyPrinting();
    final Gson gson = gsonBuilder.create();
    final LargeData data = new LargeData();
    data.create(10485760);
    final String json = gson.toJson(data);
    final File dir = new File("data");
    dir.mkdirs();
    try (PrintStream out = new PrintStream(new File(dir, "outputSerialiser.json"), "UTF-8")) {
        out.println(json);
    }
    stopWatch.stop();
    System.out.println("Done in " + stopWatch.getTime());
}

Example 100 with GsonBuilder

use of com.google.gson.GsonBuilder in project epadd by ePADD.

the class LabelManager method writeObjectToStream.

/*
    argument is the directory where json and csv files will be generated. Label meta data will be stored
    in a json file whereas the mapping of docids to labelids will be stored as csv.
     */
public void writeObjectToStream(String dirname) {
    // writing labelinfo map to json format
    FileWriter writer = null;
    try {
        String str = dirname + File.separator + JSONFILENAME;
        writer = new FileWriter(str);
        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        gson.toJson(labelInfoMap, writer);
        writer.close();
    } catch (IOException e) {
        log.warn("Unable to write labelinfo file");
    } finally {
        try {
            writer.close();
        } catch (IOException e) {
        }
    }
    // writing docToLabelIDmap to csv
    try {
        FileWriter fw = new FileWriter(dirname + File.separator + CSVFILENAME);
        CSVWriter csvwriter = new CSVWriter(fw, ',', '"', '\n');
        // write the header line: "DocID,LabelID ".
        List<String> line = new ArrayList<>();
        line.add("DocID");
        line.add("LabelID");
        csvwriter.writeNext(line.toArray(new String[line.size()]));
        // write the records
        for (String docid : docToLabelID.keySet()) {
            for (String labid : docToLabelID.get(docid)) {
                line = new ArrayList<>();
                line.add(docid);
                line.add(labid);
                csvwriter.writeNext(line.toArray(new String[line.size()]));
            }
        }
        csvwriter.close();
        fw.close();
    } catch (IOException e) {
        log.warn("Unable to write docid to label map in csv file");
        return;
    }
}