+++ /dev/null
-/*
- * Copyright (C) 2007-2012 Argeo GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.argeo.server.json;
-
-import java.io.IOException;
-import java.io.StringWriter;
-import java.io.Writer;
-
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.argeo.ArgeoException;
-import org.argeo.server.Serializer;
-import org.argeo.server.ServerSerializer;
-import org.codehaus.jackson.JsonFactory;
-import org.codehaus.jackson.JsonGenerator;
-import org.codehaus.jackson.map.JsonMappingException;
-import org.codehaus.jackson.map.JsonSerializer;
-import org.codehaus.jackson.map.ObjectMapper;
-import org.codehaus.jackson.map.SerializationConfig;
-import org.codehaus.jackson.map.SerializerFactory;
-import org.codehaus.jackson.map.SerializerProvider;
-import org.codehaus.jackson.map.ser.StdSerializerProvider;
-
-public class JsonServerSerializer implements ServerSerializer, Serializer {
- private final static Log log = LogFactory
- .getLog(JsonServerSerializer.class);
-
- private JsonFactory jsonFactory = new JsonFactory();
- private ObjectMapper objectMapper = new ObjectMapper();
- private SerializerProvider serializerProvider = new CustomSerializerProvider();
-
- private Boolean prettyPrint = false;
-
- private Boolean asHtml = false;
-
- private String contentTypeCharset = "UTF-8";
-
- // private Map<Class<?>,String> ignoredFields = new HashMap<Class<?>,
- // String>();
-
- public JsonServerSerializer() {
- objectMapper.setSerializerProvider(serializerProvider);
- }
-
- @SuppressWarnings("restriction")
- public void serialize(Object obj, HttpServletRequest request,
- HttpServletResponse response) {
- if (asHtml)
- response.setContentType("text/html;charset=" + contentTypeCharset);
- else
- response.setContentType("application/json;charset="
- + contentTypeCharset);
-
- try {
- if (asHtml)
- response.getWriter().append("<pre>");
-
- serialize(obj, response.getWriter());
-
- if (asHtml)
- response.getWriter().append("</pre>");
-
- } catch (IOException e) {
- throw new ArgeoException("Cannot open response stream.", e);
- }
- }
-
- public void serialize(Object obj, Writer writer) {
- serializeAndLog(obj);
-
- JsonGenerator jsonGenerator = null;
- try {
- jsonGenerator = jsonFactory.createJsonGenerator(writer);
-
- if (prettyPrint)
- jsonGenerator.useDefaultPrettyPrinter();
-
- objectMapper.writeValue(jsonGenerator, obj);
- jsonGenerator.flush();
- } catch (Exception e) {
- throw new ArgeoException("Cannot serialize " + obj, e);
- } finally {
- if (jsonGenerator != null)
- try {
- jsonGenerator.close();
- } catch (IOException e) {
- if (log.isTraceEnabled())
- log.error("Cannot close JSON generator", e);
- }
- }
- }
-
- @Deprecated
- public void serialize(Writer writer, Object obj) {
- serialize(obj, writer);
- }
-
- protected void serializeAndLog(Object obj) {
- if (!log.isTraceEnabled())
- return;
-
- JsonGenerator jsonGenerator = null;
- try {
- StringWriter stringWriter = new StringWriter();
- jsonGenerator = jsonFactory.createJsonGenerator(stringWriter);
- jsonGenerator.useDefaultPrettyPrinter();
- objectMapper.writeValue(jsonGenerator, obj);
- jsonGenerator.close();
- log.debug(stringWriter.toString());
- } catch (Exception e) {
- throw new ArgeoException("Cannot log JSON", e);
- } finally {
- if (jsonGenerator != null)
- try {
- jsonGenerator.close();
- } catch (IOException e) {
- if (log.isTraceEnabled())
- log.error("Cannot close JSON generator", e);
- }
-
- }
- }
-
- public void setPrettyPrint(Boolean prettyPrint) {
- this.prettyPrint = prettyPrint;
- }
-
- protected ObjectMapper getObjectMapper() {
- return objectMapper;
- }
-
- public void setContentTypeCharset(String contentTypeCharset) {
- this.contentTypeCharset = contentTypeCharset;
- }
-
- static class CustomSerializerProvider extends StdSerializerProvider {
-
- public CustomSerializerProvider() {
- super();
- }
-
- public CustomSerializerProvider(SerializationConfig config,
- StdSerializerProvider src, SerializerFactory f) {
- super(config, src, f);
- }
-
- protected StdSerializerProvider createInstance(
- SerializationConfig config, SerializerFactory jsf) {
- return new CustomSerializerProvider(config, this, jsf);
- }
-
- @Override
- public JsonSerializer<Object> getUnknownTypeSerializer(
- Class<?> unknownType) {
- JsonSerializer<Object> res = new JsonSerializer<Object>() {
- public void serialize(Object value, JsonGenerator jgen,
- SerializerProvider provider)
- throws JsonMappingException {
- if (log.isDebugEnabled())
- log.warn("Unknown serializer for "
- + value.getClass().getName());
- try {
- jgen.writeNull();
- } catch (Exception e) {
- throw new ArgeoException("Cannot write null", e);
- }
- }
-
- };
-
- return res;
- }
-
- }
-}
projects / lgpl / argeo-commons.git / blobdiff