com.jaspersoft.jasperserver.war.webflow.JsonModelView.java Source code

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Here is the source code for com.jaspersoft.jasperserver.war.webflow.JsonModelView.java

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/*
 * Copyright (C) 2005 - 2014 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com.
 *
 * Unless you have purchased  a commercial license agreement from Jaspersoft,
 * the following license terms  apply:
 *
 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License  as
 * published by the Free Software Foundation, either version 3 of  the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero  General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public  License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.jaspersoft.jasperserver.war.webflow;

import java.util.LinkedHashMap;
import java.util.Map;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.web.servlet.View;

/**
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 * @version $Id: JsonModelView.java 47331 2014-07-18 09:13:06Z kklein $
 */
public class JsonModelView implements View {

    private static final Log log = LogFactory.getLog(JsonModelView.class);

    private final String[] modelNames;

    public JsonModelView(String... modelNames) {
        this.modelNames = modelNames;
    }

    public String getContentType() {
        return "application/json; charset=UTF-8";
    }

    public void render(Map<String, ?> model, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("rendering json model view");
        }

        LinkedHashMap<String, Object> responseMap = new LinkedHashMap<String, Object>();
        for (String modelName : modelNames) {
            Object modelObject = model.get(modelName);
            if (modelObject != null) {
                responseMap.put(modelName, modelObject);
            }
        }

        response.setContentType("application/json; charset=UTF-8");

        ObjectMapper jsonMapper = new ObjectMapper();
        ServletOutputStream out = response.getOutputStream();
        jsonMapper.writeValue(out, responseMap);
    }

}