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

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Here is the source code for com.glaf.wechat.sdk.message.handler.ImageMessageHandler.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 java.util.StringTokenizer;

import org.apache.commons.lang3.StringUtils;
import org.dom4j.Element;

import com.glaf.wechat.sdk.message.Message;
import com.glaf.wechat.sdk.message.ImageMessage;
import com.glaf.wechat.sdk.message.filter.IMessageFilter;
import com.glaf.wechat.sdk.message.filter.MessageFilterChain;
import com.glaf.wechat.sdk.message.filter.DefaultResponseMessageFilter;

/**
 * handle image message
 * 
 */
public class ImageMessageHandler extends AbstractMessageHandler {

    @Override
    public Message handleSpecialMessage(Message message) {
        MessageFilterChain filterChain = new MessageFilterChain();
        if (StringUtils.isNotEmpty(conf.get("image.messageFilter"))) {
            String str = conf.get("image.messageFilter");
            StringTokenizer token = new StringTokenizer(str);
            while (token.hasMoreTokens()) {
                String className = token.nextToken();
                Object object = com.glaf.core.util.ReflectUtils.instantiate(className);
                if (object instanceof IMessageFilter) {
                    IMessageFilter filter = (IMessageFilter) object;
                    filterChain.addFilter(filter);
                }
            }
        }
        //??
        filterChain.addFilter(new DefaultResponseMessageFilter());
        return filterChain.doFilterChain(message);
    }

    @Override
    protected void parseSpecialMessage(Message message, Element root) {
        ImageMessage msg = (ImageMessage) message;
        msg.setPicUrl(root.elementText(TAG_PICURL));
    }

}