关于XMl小故事——建模

package com.zking.xmlmodel.entity;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

/**
 * 对应config.xml中action节点所建立的建模实体
 * <config> ->ConfigModel
 * 包含关系：ConfigModel ->ConfigModel ->ForwardModel(0~N)
 * @author Administrator
 *
 */
public class ConfigModel implements Serializable {

	//key:代表action节点中的path属性，唯一
	//value:代表action节点本身
	private Map<String,ActionModel> actions=new HashMap<>();
	
	public void push(ActionModel action) {
		actions.put(action.getPath(),action);
	}
	public ActionModel get(String path) {
		return actions.get(path);
	}
}

package com.zking.xmlmodel.entity;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

/**
 * 对应config.xml中action节点所建立的建模实体
 * <action> ->ActionModel
 * 包含关系：ActionModel ->ActionModel(0~N)
 * @author Administrator
 *
 */
public class ActionModel implements Serializable {

	private String path;
	private String type;
	
	//key:代表forward节点中的name属性，唯一
	//value:代表forward节点本身
	private Map<String, ForwardModel> forwards=new HashMap<>();
	
	public void push(ForwardModel forword) {
		forwards.put(forword.getName(), forword);
	}
	
	public ForwardModel get(String name) {
		return forwards.get(name);
	}
	
	public String getPath() {
		return path;
	}
	public void setPath(String path) {
		this.path = path;
	}
	public String getType() {
		return type;
	}
	public void setType(String type) {
		this.type = type;
	}
	public ActionModel() {
		super();
	}
	@Override
	public String toString() {
		return "ActionModel [path=" + path + ", type=" + type + "]";
	}
	
	
}

package com.zking.xmlmodel.entity;

import java.io.Serializable;

/**
 * 对应config.xml中forward节点所建立的建模实体
 * <forward> ->ForwardModel
 * @author zjjt
 *
 */
public class ForwardModel implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String name;
	private String path;
	private boolean redirect;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPath() {
		return path;
	}
	public void setPath(String path) {
		this.path = path;
	}
	public boolean isRedirect() {
		return redirect;
	}
	public void setRedirect(boolean redirect) {
		this.redirect = redirect;
	}
	public ForwardModel() {
		super();
	}
	@Override
	public String toString() {
		return "ForwardModel [name=" + name + ", path=" + path + ", redirect=" + redirect + "]";
	}
	
}

package com.zking.xmlmodel.util;

import java.io.InputStream;
import java.io.Serializable;
import java.util.List;


import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;

import com.zking.xmlmodel.entity.ActionModel;
import com.zking.xmlmodel.entity.ConfigModel;
import com.zking.xmlmodel.entity.ForwardModel;

public class ConfigModelFactory implements Serializable {

	public static final String DEFAULT_PATH="/config.xml";
	
	private ConfigModelFactory() {}
	
	public static ConfigModel createConfigModel() {
		return createConfigModel(DEFAULT_PATH);
	}
	
	public static ConfigModel createConfigModel(String path) {
		ConfigModel configModel = new ConfigModel();
		ActionModel actionModel=null;
		ForwardModel forwardmodel=null;
		try {
			//1.获取文件输入流
			InputStream is = ConfigModelFactory.class.getResourceAsStream(path);
			//2.创建SAXReader对象
			SAXReader saxReader=new SAXReader();
			//3.读取文件输入流并换成Document对象
			//注：Document包含整个XML中的元素、属性以及文本信息
			Document doc= saxReader.read(is);
			//4.解析XML
			//注意：
			//1）获取多个节点：selectNode
			//2）获取单个节点：selectSingNode
			List<Node> actionNodes =doc.selectNodes("/config/action");
			//5.循环遍历
			for (Node action : actionNodes) {
				//6.将action节点转换成元素节点（<action>）
				Element actionElem=(Element) action;
				//7.获取action节点中所有属性信息（path、type）
				String actionPath=actionElem.attributeValue("path");
				String actionType=actionElem.attributeValue("type");
				//8.初始化ActionModel
				actionModel=new ActionModel();
				actionModel.setPath(actionPath);
				actionModel.setType(actionType);
				//9.获取action节点所有forward节点（0~N）
				List<Node> forwarNodes=actionElem.selectNodes("forward");
				//10.循环遍历forward
				for (Node forward : forwarNodes) {
					//11.将forwar节点转化成元素节点（<forward>）
					Element forwarElem=(Element) forward;
					//12.获取forward节点中的所有属性（name,path以及redirect）
					String forwardName=forwarElem.attributeValue("name");
					String forwardPath=forwarElem.attributeValue("path");
					String forwardRedirect=forwarElem.attributeValue("redirect");
					//13.初始化ForwardModel
					forwardmodel=new ForwardModel();
					forwardmodel.setName(forwardName);
					forwardmodel.setPath(forwardPath);
					forwardmodel.setRedirect(Boolean.parseBoolean(forwardRedirect));
					//14.将ForwardModel存入到对应的actionModel下
					actionModel.push(forwardmodel);
				}
				//15.将actionModel存入对应的ConfigModel下
				configModel.push(actionModel);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return configModel;
	}
	public static void main(String[] args) {
		ConfigModel configModel=ConfigModelFactory.createConfigModel();
		//要求：获取config节点下的action节点的path属性等于/loginAction的节点对象
		ActionModel actionModel=configModel.get("/loginAction");
		System.out.println("path="+actionModel.getPath());
		System.out.println("type="+actionModel.getType());
		//要求：获取action节点下的forward节点的name属性等于success
		ForwardModel forwardModel=actionModel.get("success");
		System.out.println("name="+forwardModel.getName());
		System.out.println("path="+forwardModel.getPath());
		System.out.println("redirect="+forwardModel.isRedirect());
	}
}