com.glaf.wechat.sdk.message.handler.EventMessageHandler.java Source code

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Here is the source code for com.glaf.wechat.sdk.message.handler.EventMessageHandler.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 com.glaf.wechat.sdk.message.handler;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Element;

import com.glaf.wechat.sdk.message.Message;
import com.glaf.wechat.sdk.message.EventMessage;
import com.glaf.wechat.sdk.message.filter.LocationMessageFilter;
import com.glaf.wechat.sdk.message.filter.MenuMessageFilter;
import com.glaf.wechat.sdk.message.filter.MessageFilterChain;
import com.glaf.wechat.sdk.message.filter.DefaultResponseMessageFilter;
import com.glaf.wechat.sdk.message.filter.SubscribeMessageFilter;
import com.glaf.wechat.sdk.message.filter.UnsubscribeMessageFilter;

/**
 * handle event message
 */
public class EventMessageHandler extends AbstractMessageHandler {
    protected static final Log logger = LogFactory.getLog(EventMessageHandler.class);

    @Override
    public Message handleSpecialMessage(Message message) {
        MessageFilterChain filterChain = new MessageFilterChain();
        EventMessage msg = (EventMessage) message;
        logger.debug("event:" + msg.getEvent());
        logger.debug("eventKey:" + msg.getEventKey());
        if (StringUtils.equalsIgnoreCase(msg.getEvent(), "subscribe")) {
            // 
            filterChain.addFilter(new SubscribeMessageFilter());
        } else if (StringUtils.equalsIgnoreCase(msg.getEvent(), "unsubscribe")) {
            // ?
            filterChain.addFilter(new UnsubscribeMessageFilter());
        } else if (StringUtils.equalsIgnoreCase(msg.getEvent(), "CLICK")) {
            // ??
            String eventKey = msg.getEventKey();
            if (StringUtils.isNotEmpty(eventKey)) {
                filterChain.addFilter(new MenuMessageFilter());
                logger.debug("??:" + eventKey);
            }
        } else if (StringUtils.equalsIgnoreCase(msg.getEvent(), "LOCATION")) {
            // ??
            filterChain.addFilter(new LocationMessageFilter());
        }

        // ??
        filterChain.addFilter(new DefaultResponseMessageFilter());
        return filterChain.doFilterChain(message);
    }

    @Override
    protected void parseSpecialMessage(Message message, Element root) {
        EventMessage msg = (EventMessage) message;
        msg.setEvent(root.elementText(TAG_EVENT));
        msg.setEventKey(root.elementText(TAG_EVENTKEY));
    }

}