eventlistenerconfigloader.java

这个是使用java开发的一个平台

package com.exp.web.util.config;

import com.exp.fcl.configs.ConfigLoaderSupport;
import com.exp.fcl.util.StringUtil;
import com.exp.fcl.xml.EXPXMLNode;
import com.exp.web.util.navigation.ForwardMap;
import com.exp.web.util.validator.ValidatorMap;

public class EventListenerConfigLoader extends ConfigLoaderSupport {

    private static final String DEFAULT_EVENTLISTENER = "com.exp.web.support.EmptyPageEventListener";

    public Object load(String pagePackagePath) {
        if (this.document != null) {
            String state = this.document.getRoot().getAttributeValue("debug");
            boolean isDebug = StringUtil.equalsIgnoreCase(state, "true");
            EXPXMLNode item = this.document.getRoot().getChildNode(
                    pagePackagePath);
            EventListenerCfg listenerCfg = null;
            if (item != null) {
                listenerCfg = parseConfig(item, isDebug);

            } else {
                System.out.println("警告：" + pagePackagePath + " 事件监听器配置不存在！");
            }
            if (listenerCfg == null) {
                listenerCfg = new EventListenerCfg();
                listenerCfg.setListenerClass(DEFAULT_EVENTLISTENER);
            }

            return listenerCfg;
        } else {
            throw new RuntimeException("not found config file of listener!");
        }
    }

    protected EventListenerCfg parseConfig(EXPXMLNode node, boolean isDebug) {
        String listenerClass = node.getAttributeValue("listener");
        if ("".equals(listenerClass)) {
            listenerClass = DEFAULT_EVENTLISTENER;
        }

        EventListenerCfg listener = new EventListenerCfg();
        listener.setListenerClass(listenerClass);

        //处理导航信息
        EXPXMLNode forwardNode = node.getChildNode("forwards");
        if (forwardNode != null) {
            ForwardMap fMap = new ForwardMap(forwardNode);
            listener.setForwardMap(fMap);
        }
        //处理验证信息
        EXPXMLNode validatorsNode = node.getChildNode("validators");
        if (validatorsNode != null) {
            ValidatorMap vMap = new ValidatorMap(validatorsNode);
            listener.setValidatorMap(vMap);
        }

        EXPXMLNode params = node.getChildNode("params");
        if (params != null) {
            int count = params.getChildNodesCount();
            for (int i = 0; i < count; i++) {
                EXPXMLNode param = params.getChildNode(i);
                String name = param.getAttributeValue("name");
                String value = param.getNodeValue();
                listener.addParam(name, value);
            }
        }
        return listener;
    }

}