Example usage for com.google.gson GsonBuilder GsonBuilder

List of usage examples for com.google.gson GsonBuilder GsonBuilder

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Introduction

In this page you can find the example usage for com.google.gson GsonBuilder GsonBuilder.

Prototype

public GsonBuilder()

Source Link

Document

Creates a GsonBuilder instance that can be used to build Gson with various configuration settings.

Usage

From source file:ca.live.hk12.numera.server.database.FileService.java

License:Open Source License

public static <T> T readData(String fileLocation, Class<T> dataClass) {
    T t = null;//w ww  .  java2 s . c  o  m
    try (Reader reader = new InputStreamReader(new FileInputStream(fileLocation), "UTF-8")) {
        Gson gson = new GsonBuilder().create();
        t = gson.fromJson(reader, dataClass);
        reader.close();
    } catch (Exception e) {
        return t;
    }
    return t;
}

From source file:ca.live.hk12.numera.server.database.FileService.java

License:Open Source License

public static <T> boolean writeData(String fileLocation, T t) {
    try (Writer writer = new OutputStreamWriter(new FileOutputStream(fileLocation), "UTF-8")) {
        Gson gson = new GsonBuilder().create();
        gson.toJson(t, writer);//from w  w  w. j a va 2 s  .c  o  m
        writer.close();
        return true;
    } catch (Exception e) {
        e.printStackTrace();
        throw new ServerException("Could not write to:<br/>" + fileLocation);
    }
}

From source file:ca.magenta.pi.remote.common.WiringPiReturnStatus.java

License:Apache License

public String returnJSonAsString(boolean pretty) {
    String r_string = null;// w w  w. ja va2s .c o m

    try {
        if (pretty) {
            r_string = (new GsonBuilder().setPrettyPrinting().create()).toJson(this);
        } else {
            r_string = (new Gson()).toJson(this);
        }

    } catch (Throwable e) {
        r_string = this.returnRuntimeExceptionJSonStr(e);
    }

    return r_string;
}

From source file:ca.oson.json.Oson.java

License:Open Source License

public Gson getGson() {
    if (gson == null) {
        GsonBuilder gsonBuilder = new GsonBuilder();

        switch (getDefaultType()) {
        case ALWAYS:
            gsonBuilder.serializeNulls();
            break;
        case NON_NULL:
            break;
        case NON_EMPTY:
            break;
        case DEFAULT:
            gsonBuilder.serializeNulls();
            break;
        default:/* w  w  w .j  a v a  2 s .co  m*/
            gsonBuilder.serializeNulls();
            break;
        }

        switch (getFieldNaming()) {
        case FIELD: // original field name: someField_name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.IDENTITY);
            break;
        case LOWER: // somefield_name -> some_field_name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
            break;
        case UPPER: //SOMEFIELD_NAME -> SomeFieldName
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE);
            break;
        case CAMELCASE: // someFieldName
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.IDENTITY);
            break;
        case UPPER_CAMELCASE: // SomeFieldName
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE);
            break;
        case UNDERSCORE_CAMELCASE: // some_Field_Name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
            break;
        case UNDERSCORE_UPPER_CAMELCASE: // Some_Field_Name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
            break;
        case UNDERSCORE_LOWER: // some_field_name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
            break;
        case UNDERSCORE_UPPER: // SOME_FIELD_NAME
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES);
            break;
        case SPACE_CAMELCASE: // some Field Name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES);
            break;
        case SPACE_UPPER_CAMELCASE: // Some Field Name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES);
            break;
        case SPACE_LOWER: // some field name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES);
            break;
        case SPACE_UPPER: // SOME FIELD NAME
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES);
            break;
        case DASH_CAMELCASE: // some-Field-Name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
            break;
        case DASH_UPPER_CAMELCASE: // Some-Field-Name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
            break;
        case DASH_LOWER: // some-field-name
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
            break;
        case DASH_UPPER: // SOME-FIELD-NAME
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
            break;
        default:
            gsonBuilder.setFieldNamingPolicy(FieldNamingPolicy.IDENTITY);
            break;
        }

        if (getPrettyPrinting() && getIndentation() > 0) {
            gsonBuilder.setPrettyPrinting();
        }

        gsonBuilder.setDateFormat(options.getSimpleDateFormat());

        Set<FieldMapper> mappers = getFieldMappers();
        Map<Class, ClassMapper> classMappers = getClassMappers();
        List<ExclusionStrategy> strategies = new ArrayList<>();
        if (mappers != null) {
            gsonBuilder.setFieldNamingStrategy(new FieldNamingStrategy() {
                @Override
                public String translateName(Field f) {
                    String fieldName = f.getName();
                    String serializedName = java2Json(f);
                    if (!fieldName.equalsIgnoreCase(serializedName)) {
                        // if null returned, this field is ignored
                        return serializedName;
                    }
                    return json2Java(f);
                }
            });

            for (FieldMapper mapper : mappers) {
                if (mapper.java == null || mapper.json == null || mapper.ignore) {
                    strategies.add(new ExclusionStrategy() {

                        @Override
                        public boolean shouldSkipField(FieldAttributes f) {
                            String name = f.getName();
                            Class cls = f.getClass();

                            if (mapper.java == null) {
                                if (mapper.json.equals(name)) {
                                    if (mapper.getType() == null || cls.equals(mapper.getType())) {
                                        return true;
                                    }
                                }

                            } else if (mapper.json == null || mapper.ignore) {
                                if (mapper.java.equals(name)) {
                                    if (mapper.getType() == null || cls.equals(mapper.getType())) {
                                        return true;
                                    }
                                }

                            }

                            return false;
                        }

                        @Override
                        public boolean shouldSkipClass(Class<?> clazz) {
                            return false;
                        }
                    });
                }
            }
        }

        if (classMappers != null) {
            for (Entry<Class, ClassMapper> entry : classMappers.entrySet()) {
                ClassMapper mapper = entry.getValue();
                if (mapper.getType() == null) {
                    mapper.setType(entry.getKey());
                }
                if (mapper.ignore != null && mapper.ignore) {
                    strategies.add(new ExclusionStrategy() {

                        @Override
                        public boolean shouldSkipField(FieldAttributes f) {
                            return false;
                        }

                        @Override
                        public boolean shouldSkipClass(Class<?> clazz) {
                            if (clazz.equals(mapper.getType())) {
                                return true;
                            }
                            return false;
                        }
                    });
                }
            }

            for (Entry<Class, ClassMapper> entry : classMappers.entrySet()) {
                ClassMapper mapper = entry.getValue();
                if (!mapper.ignore && mapper.constructor != null) {
                    gsonBuilder.registerTypeAdapter(entry.getKey(), mapper.constructor);
                }
            }
        }

        int size = strategies.size();
        if (size > 0) {
            gsonBuilder.setExclusionStrategies(strategies.toArray(new ExclusionStrategy[size]));
        }

        Double version = getVersion();
        if (version != null) {
            gsonBuilder.setVersion(version);
        }

        if (isUseGsonExpose()) {
            gsonBuilder.excludeFieldsWithoutExposeAnnotation();
        }

        if (!DefaultValue.isDefault(getPatterns())) {
            gsonBuilder.setLenient();
        }

        gson = gsonBuilder.create();
    }

    return gson;
}

From source file:ca.thoughtfire.metastats.StatsServer.java

License:Open Source License

public static void main(final String[] args) throws Exception {

    Gson gson = new GsonBuilder().setPrettyPrinting().serializeNulls().create();

    System.out.println("metaStats Core Server Version " + version.getBuildNumber() + " ("
            + version.getBuildName() + ") - Code By " + version.getAuthor());
    System.out.println("");
    OptionParser parser = new OptionParser("c:");
    parser.accepts("config").withRequiredArg();

    try {//from   ww  w.  j ava2s. com
        OptionSet options = parser.parse(args);

        String configFileName = options.valueOf("config").toString();
        File file = new File(configFileName);
        if ((!file.isFile()) || (!file.canRead())) {
            System.out.println("Error - cannot read configuration \"" + file + "\" - aborting.");
            System.exit(1);
        }
        try {
            String jsonInput = new String(readAllBytes(get(configFileName)));
            config = gson.fromJson(jsonInput, SystemConfiguration.class);

        } catch (IOException | JsonSyntaxException ex) {
            System.out.println("Error - cannot parse configuration \"" + file + "\" - error is \"" + ex
                    + "\" - aborting.");
            System.exit(1);
        }

    } catch (Exception ex) {
        System.out.println("Error processing command line arguments: " + ex);
        System.exit(1);
    }
    try {
        logger.addAppender(new DailyRollingFileAppender(new PatternLayout("%d{ISO8601} [%-5p] %m%n"),
                config.getLogDir() + "/" + config.getLogFileName(), "'.'yyyy-MM-dd"));
    } catch (Exception ex) {
        System.out.println("FATAL - COULD NOT SETUP LOG FILE APPENDER - CHECK CONFIGURATION.");
        logger.fatal("Could not setup appender?");
    }
    logger.setAdditivity(false);
    logger.setLevel(Level.DEBUG);

    logger.info("metaStats Core Server Version " + version.getBuildNumber() + " (" + version.getBuildName()
            + ") - Code By " + version.getAuthor());

    /* Light up database */
    Class.forName("org.postgresql.Driver"); // load the DB driver
    BoneCPConfig boneCPconfig = new BoneCPConfig(); // create a new configuration object
    boneCPconfig.setJdbcUrl("jdbc:postgresql://" + config.getDbServer() + "/" + config.getDbName()); // set the JDBC url
    boneCPconfig.setUsername(config.getDbUser()); // set the username
    boneCPconfig.setPassword(config.getDbPass()); // set the password

    logger.info("Database Connection Online");
    connectionPool = new BoneCP(boneCPconfig); // setup the connection pool

    Server server = new Server(config.getListenPort());
    ServletContextHandler context = new ServletContextHandler();
    context.setContextPath("/");
    server.setHandler(context);

    context.addServlet(new ServletHolder(new MetricsServlet()), "/metrics");
    DefaultExports.initialize();

    logger.info("Creating timer thread to poll Metaswitch.");
    timer = new Timer();

    timer.schedule(dbTask, 300, 300 * 1000); // Run every 5 minutes
    logger.info("Timer created - ready to rock");

    // Put your application setup code here.
    server.start();
    server.join();
    logger.info("Listening on port " + config.getListenPort());

}

From source file:ca.tokenize.sally.api.SallyService.java

License:Open Source License

private static <T> T buildService(String baseUrl, String authToken, Class<T> service) {
    Gson gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
            .registerTypeAdapter(Date.class, new DateDeserializer()).create();

    AuthInterceptor interceptor = new AuthInterceptor(authToken);

    RestAdapter restAdapter = new RestAdapter.Builder().setEndpoint(baseUrl)
            .setConverter(new GsonConverter(gson)).setRequestInterceptor(interceptor)
            .setErrorHandler(new SallyErrorHandler()).build();

    return restAdapter.create(service);
}

From source file:ca.tonsaker.workschedu.employee.Employee.java

License:Apache License

public boolean save() throws IOException {
    String path = System.getenv("APPDATA") + "\\WorkSchedU\\Employees\\user" + this.EMPLOYEE_USERNAME + ".json";
    new File(System.getenv("APPDATA") + "\\WorkSchedU\\Employees").mkdirs();
    Writer writer = new OutputStreamWriter(new FileOutputStream(path));
    Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().setPrettyPrinting().create();

    writer.write(gson.toJson(this));
    writer.flush();/*from w w  w  .j a  v a  2 s.  co m*/
    writer.close();

    System.out.println("Employee JSON file successfully saved to: " + path);
    return true;
}

From source file:ca.tonsaker.workschedu.employee.Employee.java

License:Apache License

public static Employee load(String username) throws FileNotFoundException {
    Employee e = new Employee();
    String path = System.getenv("APPDATA") + "\\WorkSchedU\\Employees\\user" + username + ".json";
    FileInputStream file = new FileInputStream(path);

    Reader reader = new InputStreamReader(file);
    Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().setPrettyPrinting().create();

    e = gson.fromJson(reader, Employee.class);
    return e;/*from w  ww  .  ja  va  2s.c om*/
}

From source file:ca.tonsaker.workschedu.employee.Employee.java

License:Apache License

public static Employee[] load() throws FileNotFoundException {
    String path = System.getenv("APPDATA") + "\\WorkSchedU\\Employees\\";
    File folder = new File(path);
    File[] listOfFiles = folder.listFiles();

    Employee[] temp_employeesArray = new Employee[listOfFiles.length];
    int empIdx = 0;
    for (int i = 0; i < listOfFiles.length; i++) {
        if (listOfFiles[i].isFile()
                && listOfFiles[i].getName().substring(listOfFiles[i].getName().indexOf('.')).equals(".json")) {

            FileInputStream file = new FileInputStream(listOfFiles[i]);

            Reader reader = new InputStreamReader(file);
            Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().setPrettyPrinting().create();

            Employee temp_employee = gson.fromJson(reader, Employee.class);
            if (temp_employee != null) {
                temp_employeesArray[i] = temp_employee;
                System.out.println("Loaded file " + listOfFiles[i].getName());
                empIdx++;//  w  w w.ja  v  a2s  .co  m
            } else {
                try {
                    throw new Exception("Json File " + path + listOfFiles[i].getName()
                            + " is an invalid Employee.class json file");
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }
        }
    }
    Employee[] employeesArray = new Employee[empIdx];
    int empIdx2 = 0;
    for (Employee e : temp_employeesArray) {
        if (e != null) {
            employeesArray[empIdx2] = e;
            empIdx2++;
        }
    }
    return employeesArray;
}

From source file:ca.travelagency.utils.JsonUtils.java

License:Apache License

public JsonUtils() {
    gson = new GsonBuilder().registerTypeAdapter(Date.class, new DateSerializer())
            .registerTypeAdapter(Date.class, new DateDeserializer())
            .registerTypeAdapter(byte[].class, new ByteArraySerializer())
            .registerTypeAdapter(byte[].class, new ByteArrayDeserializer()).create();
}