Java tutorial
/** * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. */ package com.liferay.portal.json; import com.liferay.portal.json.jabsorb.serializer.LiferayJSONDeserializationWhitelist; import com.liferay.portal.json.jabsorb.serializer.LiferayJSONSerializer; import com.liferay.portal.json.jabsorb.serializer.LiferaySerializer; import com.liferay.portal.json.jabsorb.serializer.LocaleSerializer; import com.liferay.portal.kernel.json.JSONArray; import com.liferay.portal.kernel.json.JSONDeserializer; import com.liferay.portal.kernel.json.JSONException; import com.liferay.portal.kernel.json.JSONFactory; import com.liferay.portal.kernel.json.JSONObject; import com.liferay.portal.kernel.json.JSONSerializer; import com.liferay.portal.kernel.json.JSONTransformer; import com.liferay.portal.kernel.log.Log; import com.liferay.portal.kernel.log.LogFactoryUtil; import com.liferay.portal.kernel.util.ClassUtil; import com.liferay.portal.kernel.util.Validator; import java.lang.reflect.InvocationTargetException; import java.util.Arrays; import java.util.Collection; import java.util.List; import org.jabsorb.serializer.MarshallException; import org.json.JSONML; /** * @author Brian Wing Shun Chan */ public class JSONFactoryImpl implements JSONFactory { public JSONFactoryImpl() { JSONInit.init(); _jsonSerializer = new LiferayJSONSerializer(_liferayJSONDeserializationWhitelist); try { _jsonSerializer.registerDefaultSerializers(); _jsonSerializer.registerSerializer(new LiferaySerializer()); _jsonSerializer.registerSerializer(new LocaleSerializer()); } catch (Exception e) { _log.error(e, e); } } @Override public String convertJSONMLArrayToXML(String jsonml) { try { org.json.JSONArray jsonArray = new org.json.JSONArray(jsonml); return JSONML.toString(jsonArray); } catch (Exception e) { if (_log.isWarnEnabled()) { _log.warn(e, e); } throw new IllegalStateException("Unable to convert to XML", e); } } @Override public String convertJSONMLObjectToXML(String jsonml) { try { org.json.JSONObject jsonObject = new org.json.JSONObject(jsonml); return JSONML.toString(jsonObject); } catch (Exception e) { if (_log.isWarnEnabled()) { _log.warn(e, e); } throw new IllegalStateException("Unable to convert to XML", e); } } @Override public String convertXMLtoJSONMLArray(String xml) { try { org.json.JSONArray jsonArray = JSONML.toJSONArray(xml); return jsonArray.toString(); } catch (Exception e) { if (_log.isWarnEnabled()) { _log.warn(e, e); } throw new IllegalStateException("Unable to convert to JSONML", e); } } @Override public String convertXMLtoJSONMLObject(String xml) { try { org.json.JSONObject jsonObject = JSONML.toJSONObject(xml); return jsonObject.toString(); } catch (Exception e) { if (_log.isWarnEnabled()) { _log.warn(e, e); } throw new IllegalStateException("Unable to convert to JSONML", e); } } @Override public JSONTransformer createJavaScriptNormalizerJSONTransformer(List<String> javaScriptAttributes) { throw new UnsupportedOperationException("Temporally disabled until alloy-taglib.jar is updated"); } @Override public JSONArray createJSONArray() { return new JSONArrayImpl(); } @Override public JSONArray createJSONArray(Collection<?> collection) { return new JSONArrayImpl(collection); } @Override public JSONArray createJSONArray(String json) throws JSONException { return new JSONArrayImpl(json); } @Override public <T> JSONArray createJSONArray(T[] array) { return new JSONArrayImpl(Arrays.asList(array)); } @Override public <T> JSONDeserializer<T> createJSONDeserializer() { return new JSONDeserializerImpl<>(); } @Override public JSONObject createJSONObject() { return new JSONObjectImpl(); } @Override public JSONObject createJSONObject(String json) throws JSONException { return new JSONObjectImpl(json); } @Override public JSONSerializer createJSONSerializer() { return new JSONSerializerImpl(); } @Override public Object deserialize(JSONObject jsonObj) { return deserialize(jsonObj.toString()); } @Override public Object deserialize(String json) { try { return _jsonSerializer.fromJSON(json); } catch (Exception e) { if (_log.isWarnEnabled()) { _log.warn(e, e); } throw new IllegalStateException("Unable to deserialize object", e); } } public LiferayJSONDeserializationWhitelist getLiferayJSONDeserializationWhitelist() { return _liferayJSONDeserializationWhitelist; } @Override public String getNullJSON() { return _NULL_JSON; } @Override public JSONObject getUnmodifiableJSONObject() { return _unmodifiableJSONObject; } @Override public Object looseDeserialize(String json) { try { JSONDeserializer<?> jsonDeserializer = createJSONDeserializer(); return jsonDeserializer.deserialize(json); } catch (Exception e) { if (_log.isWarnEnabled()) { _log.warn(e, e); } throw new IllegalStateException("Unable to deserialize object", e); } } @Override public <T> T looseDeserialize(String json, Class<T> clazz) { JSONDeserializer<?> jsonDeserializer = createJSONDeserializer(); jsonDeserializer.use(null, clazz); return (T) jsonDeserializer.deserialize(json); } @Override public String looseSerialize(Object object) { JSONSerializer jsonSerializer = createJSONSerializer(); return jsonSerializer.serialize(object); } @Override public String looseSerialize(Object object, JSONTransformer jsonTransformer, Class<?> clazz) { JSONSerializer jsonSerializer = createJSONSerializer(); jsonSerializer.transform(jsonTransformer, clazz); return jsonSerializer.serialize(object); } @Override public String looseSerialize(Object object, String... includes) { JSONSerializer jsonSerializer = createJSONSerializer(); jsonSerializer.include(includes); return jsonSerializer.serialize(object); } @Override public String looseSerializeDeep(Object object) { JSONSerializer jsonSerializer = createJSONSerializer(); return jsonSerializer.serializeDeep(object); } @Override public String looseSerializeDeep(Object object, JSONTransformer jsonTransformer, Class<?> clazz) { JSONSerializer jsonSerializer = createJSONSerializer(); jsonSerializer.transform(jsonTransformer, clazz); return jsonSerializer.serializeDeep(object); } @Override public String serialize(Object object) { try { return _jsonSerializer.toJSON(object); } catch (MarshallException me) { if (_log.isWarnEnabled()) { _log.warn(me, me); } throw new IllegalStateException("Unable to serialize object", me); } } @Override public String serializeThrowable(Throwable throwable) { JSONObject jsonObject = createJSONObject(); if (throwable instanceof InvocationTargetException) { throwable = throwable.getCause(); } String throwableMessage = throwable.getMessage(); if (Validator.isNull(throwableMessage)) { throwableMessage = throwable.toString(); } JSONObject errorJSONObject = createJSONObject(); errorJSONObject.put("message", throwableMessage).put("type", ClassUtil.getClassName(throwable)); jsonObject.put("error", errorJSONObject).put("exception", throwableMessage).put("throwable", throwable.toString()); if (throwable.getCause() == null) { return jsonObject.toString(); } Throwable rootCauseThrowable = throwable; while (rootCauseThrowable.getCause() != null) { rootCauseThrowable = rootCauseThrowable.getCause(); } JSONObject rootCauseJSONObject = createJSONObject(); throwableMessage = rootCauseThrowable.getMessage(); if (Validator.isNull(throwableMessage)) { throwableMessage = rootCauseThrowable.toString(); } rootCauseJSONObject.put("message", throwableMessage).put("type", ClassUtil.getClassName(rootCauseThrowable)); jsonObject.put("rootCause", rootCauseJSONObject); return jsonObject.toString(); } private static final String _NULL_JSON = "{}"; private static final Log _log = LogFactoryUtil.getLog(JSONFactoryImpl.class); private final org.jabsorb.JSONSerializer _jsonSerializer; private final LiferayJSONDeserializationWhitelist _liferayJSONDeserializationWhitelist = new LiferayJSONDeserializationWhitelist(); private final JSONObject _unmodifiableJSONObject = new UnmodifiableJSONObjectImpl(); }