org.politaktiv.communitynewsletter.application.CommunityNewsletterPortlet.java Source code

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Here is the source code for org.politaktiv.communitynewsletter.application.CommunityNewsletterPortlet.java

Source

/**
 * 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.politaktiv.communitynewsletter.application;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Date;

import javax.portlet.MimeResponse;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;

import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.portlet.PortletResponseUtil;
import com.liferay.portal.kernel.util.MimeTypesUtil;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.service.UserLocalServiceUtil;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.util.bridges.mvc.MVCPortlet;
import com.liferay.portal.model.User;

public class CommunityNewsletterPortlet extends MVCPortlet {
    @Override
    public void serveResource(ResourceRequest resourceRequest, ResourceResponse resourceResponse) {

        ThemeDisplay themeDisplay = (ThemeDisplay) resourceRequest.getAttribute(WebKeys.THEME_DISPLAY);
        List<User> currentGroupUserList = null;
        try {
            currentGroupUserList = UserLocalServiceUtil.getGroupUsers(themeDisplay.getScopeGroupId());

            StringBuilder csvStringBuilder = new StringBuilder();
            ByteArrayOutputStream csvByteArrayOutputStream = new ByteArrayOutputStream();

            csvStringBuilder.append("first name");
            csvStringBuilder.append(",");
            csvStringBuilder.append("last name");
            csvStringBuilder.append(",");
            csvStringBuilder.append("email adress");
            csvStringBuilder.append("\n");

            for (User user : currentGroupUserList) {
                csvStringBuilder.append(user.getFirstName());
                csvStringBuilder.append(",");
                csvStringBuilder.append(user.getLastName());
                csvStringBuilder.append(",");
                csvStringBuilder.append(user.getEmailAddress());
                csvStringBuilder.append("\n");
            }

            csvByteArrayOutputStream.write(csvStringBuilder.toString().getBytes());

            Date todayDate = new Date();
            resourceResponse.setCharacterEncoding("utf-8");
            resourceResponse.setContentType("text/csv");

            PortletResponseUtil.sendFile(resourceRequest, resourceResponse,
                    themeDisplay.getScopeGroupName() + "-" + todayDate.toString() + "-CommunityMemberList.csv",
                    csvByteArrayOutputStream.toByteArray());
            csvByteArrayOutputStream.close();

        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (PortalException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}