Example usage for com.google.gson.stream JsonReader JsonReader

Introduction

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

Prototype

public JsonReader(Reader in)

Source Link

Document

Creates a new instance that reads a JSON-encoded stream from in .

Usage

From source file:bmw.assigment.BMWAssigment.java

/**
 * For this reading I used GSON, a library made by google to parse JSON objects
 * In order for this to run propertly, a file employees.json must be in the path /resources/employees.json
 * //from w  ww  .  ja v  a  2s  .  c om
 * @return JsonObject
 */
public JsonObject readJsonFile() {

    JsonObject employeeRoot = null;

    try {
        InputStream str = BMWAssigment.class.getResourceAsStream("/resources/employees.json");
        JsonReader reader = new JsonReader(new InputStreamReader(str));
        JsonParser jsonParser = new JsonParser();
        employeeRoot = jsonParser.parse(reader).getAsJsonObject();

        reader.close();
        str.close();

    } catch (IOException ex) {
        Logger.getLogger(BMWAssigment.class.getName()).log(Level.SEVERE, null, ex);
    }

    return employeeRoot;
}

From source file:brooklyn.networking.cloudstack.CloudstackNew40FeaturesClient.java

License:Apache License

public static JsonElement json(InputStream is) {
    JsonParser parser = new JsonParser();
    JsonReader reader = null;/*from w ww.  j a  va  2 s. c o m*/
    try {
        reader = new JsonReader(new InputStreamReader(is, "UTF-8"));
    } catch (UnsupportedEncodingException e) {
        throw Exceptions.propagate(e);
    }
    JsonElement el = parser.parse(reader);
    return el;
}

From source file:brooklyn.storage.softlayer.SoftLayerRestClient.java

License:Apache License

public static JsonElement json(InputStream is) {
    JsonParser parser = new JsonParser();
    JsonReader reader = null;// w ww .  j av a2 s .  c o  m
    try {
        reader = new JsonReader(new InputStreamReader(is, "UTF-8"));
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    JsonElement el = parser.parse(reader);
    return el;
}

From source file:bytehala.flowmortarexample.GsonParceler.java

License:Apache License

private Path decode(String json) throws IOException {
    JsonReader reader = new JsonReader(new StringReader(json));

    try {/*from ww w .j  a  va  2 s.  com*/
        reader.beginObject();

        Class<?> type = Class.forName(reader.nextName());
        return gson.fromJson(reader, type);
    } catch (ClassNotFoundException e) {
        throw new RuntimeException(e);
    } finally {
        reader.close();
    }
}

From source file:ca.mcgill.cs.creco.data.CRDeadlinks.java

License:Apache License

private void tryreadingthejson() throws IOException {
    InputStream in = new FileInputStream(DataPath.get() + "dead_links.json");
    JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8"));
    reader.beginArray();//from   www  . j  a v a 2 s. c o m
    while (reader.hasNext()) {

    }

    reader.endArray();
    reader.close();
    in.close();
}

From source file:ca.mcgill.cs.creco.data.CRDeadlinks.java

License:Apache License

private static void readFile(String pFilePath) throws IOException, InterruptedException {
    InputStream in = new FileInputStream(pFilePath);
    JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8"));
    reader.beginArray();/*  ww w  .  j av a2s .c om*/
    while (reader.hasNext()) {

        ProductStub prodStub = new Gson().fromJson(reader, ProductStub.class);
        writeToFile = writeToFile.concat("{\"product_id\":" + prodStub.id + ",");
        String urltext = prodStub.modelOverviewPageUrl;
        // Write 404 error if no URL exists
        if (urltext == null) {
            writeToFile = writeToFile.concat("\"state\":" + "404" + "},");
            continue;
        }

        Thread.sleep(SLEEP);
        URL url = new URL(urltext);
        // Attempt a connection and see the resulting response code it returns
        int responseCode = ((HttpURLConnection) url.openConnection()).getResponseCode();
        writeToFile = writeToFile.concat("\"state\":" + responseCode + "},");
    }
    reader.endArray();
    reader.close();
    in.close();
}

From source file:ca.mcgill.cs.creco.data.json.JsonLoadingService.java

License:Apache License

private static void readFile(String filePath, IDataCollector pCollector) throws IOException {
    InputStream in = new FileInputStream(filePath);
    JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8"));

    reader.beginArray();/* w  ww.j a v  a2 s  . c  om*/
    while (reader.hasNext()) {
        ProductStub prodStub = new Gson().fromJson(reader, ProductStub.class);
        pCollector.addProduct(buildProduct(prodStub));

    }
    reader.endArray();
    reader.close();
    in.close();
}

From source file:ca.mcgill.cs.creco.data.json.JsonLoadingService.java

License:Apache License

private void readDeadLinks() throws FileNotFoundException, IOException {
    // Try to read the dead links file
    InputStream in;/*from  w  w  w. ja  v  a2s  . com*/
    try {
        in = new FileInputStream(aPath + aDeadLinksFileName);
    } catch (FileNotFoundException e) {
        return;
    }

    // Flag that we were succesful finding the deadlins file, so deadlinks
    // will be checked while building products
    aDoCheckDeadLinks = true;

    // Make a json reader for the deadlinks file
    JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8"));
    reader.beginArray();

    // Iterate over each entry in the deadlinks file, putting a records in a HashTable
    while (reader.hasNext()) {
        LinkResponseStub responseStub = new Gson().fromJson(reader, LinkResponseStub.class);
        aDeadLinks.put(responseStub.product_id, responseStub.state);
    }

    reader.endArray();
    reader.close();
    in.close();
}

From source file:cern.c2mon.shared.client.request.ClientRequestImpl.java

License:Open Source License

/**
 * @param json Json string representation of a <code>TransferTagRequestImpl</code> class
 * @return The deserialized Json message
 * @throws JsonSyntaxException This exception is raised when Gson attempts to read
 *                             (or write) a malformed JSON element.
 *//*from   w  ww .  java  2 s.  co m*/
public static final ClientRequest fromJson(final String json) {
    JsonReader jsonReader = new JsonReader(new StringReader(json));
    jsonReader.setLenient(true);
    return getGson().fromJson(jsonReader, ClientRequestImpl.class);
}

From source file:cern.c2mon.shared.client.request.ClientRequestImpl.java

License:Open Source License

@Override
public final Collection<T> fromJsonResponse(final String jsonString) throws JsonSyntaxException {
    Type collectionType;//from  w ww  .  j  a  v  a 2 s  .  co  m
    TypeReference jacksonCollectionType;
    JsonReader jsonReader = new JsonReader(new StringReader(jsonString));
    jsonReader.setLenient(true);

    try {
        switch (resultType) {
        case TRANSFER_TAG_LIST:
            jacksonCollectionType = new TypeReference<Collection<TransferTagImpl>>() {
            };
            return TransferTagSerializer.fromCollectionJson(jsonString, jacksonCollectionType);
        case TRANSFER_TAG_VALUE_LIST:
            jacksonCollectionType = new TypeReference<Collection<TransferTagValueImpl>>() {
            };
            return TransferTagSerializer.fromCollectionJson(jsonString, jacksonCollectionType);
        case SUPERVISION_EVENT_LIST:
            collectionType = new TypeToken<Collection<SupervisionEventImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_DAQ_XML:
            collectionType = new TypeToken<Collection<ProcessXmlResponseImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_TAG_CONFIGURATION_LIST:
            collectionType = new TypeToken<Collection<TagConfigImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_CONFIGURATION_REPORT_HEADER:
            collectionType = new TypeToken<Collection<ConfigurationReportHeader>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_CONFIGURATION_REPORT:
            collectionType = new TypeToken<Collection<ConfigurationReport>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_ACTIVE_ALARM_LIST:
            collectionType = new TypeToken<Collection<AlarmValueImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_ALARM_LIST:
            collectionType = new TypeToken<Collection<AlarmValueImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_COMMAND_HANDLES_LIST:
            collectionType = new TypeToken<Collection<CommandTagHandleImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_COMMAND_REPORT:
            collectionType = new TypeToken<Collection<CommandReportImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_PROCESS_NAMES:
            collectionType = new TypeToken<Collection<ProcessNameResponseImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_DEVICE_CLASS_NAMES:
            collectionType = new TypeToken<Collection<DeviceClassNameResponseImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_DEVICE_LIST:
            collectionType = new TypeToken<Collection<TransferDeviceImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        case TRANSFER_TAG_STATISTICS:
            collectionType = new TypeToken<Collection<TagStatisticsResponseImpl>>() {
            }.getType();
            return getGson().fromJson(jsonReader, collectionType);
        default:
            throw new JsonSyntaxException("Unknown result type specified");
        }
    } finally {
        try {
            jsonReader.close();
        } catch (IOException e) {
        }
    }
}