package com.xgj.oxm.xstream.quickDemo.streamObject;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.PrintWriter;
import java.util.Date;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.xgj.oxm.xstream.quickDemo.domain.LoginLog;
import com.xgj.oxm.xstream.quickDemo.domain.User;
public class ObjectStreamDemo {
    private static XStream xstream;
    static {
        xstream = new XStream();
    }
    /**
     * 
     * 
     * @Title: objectToXml
     * 
     * @Description: JAVA对象转化为XML
     * 
     * @throws Exception
     * 
     * @return: void
     */
    public void objectToXml() throws Exception {
        // （1）实例化序列化对象
        User user = getUser();
        // （2）创建一个PrintWriter对象，用于输出。
        PrintWriter pw = new PrintWriter("D:\\ObjectStreamSample.xml");
        // （3）创建一个HierarchicalStreamWriter的实现类来创建输出
        PrettyPrintWriter ppw = new PrettyPrintWriter(pw);
        // （4）创建对象输出流
        ObjectOutputStream out = xstream.createObjectOutputStream(ppw);
        out.writeObject(user);
        out.close();
    }
    /**
     * 
     * 
     * @Title: xmlToObject
     * 
     * @Description: XML转化为JAVA对象
     * 
     * @return
     * @throws Exception
     * 
     * @return: User
     */
    public User xmlToObject() throws Exception {
        // （1）我们需要通过对象流进行输入操作，需要FileReader和BufferedReader
        FileReader fr = new FileReader("D:\\ObjectStreamSample.xml");
        BufferedReader br = new BufferedReader(fr);
        //（2）创建对象输入流
        ObjectInputStream input = xstream.createObjectInputStream(br);
        // （3）创建对象，通过ObjectInputStream中的readObject()方法将对象从XML文件中读取出来。
        User user = (User) input.readObject();
        return user;
    }
    /**
     * 
     * 
     * @Title: getUser
     * 
     * @Description: 初始化转换对象
     * 
     * @return
     * 
     * @return: User
     */
    public static User getUser() {
        LoginLog log1 = new LoginLog();
        LoginLog log2 = new LoginLog();
        log1.setIp("192.168.1.91");
        log1.setLoginDate(new Date());
        log2.setIp("192.168.1.92");
        log2.setLoginDate(new Date());
        User user = new User();
        user.setId(1);
        user.setUserName("xstream");
        user.addLoginLog(log1);
        user.addLoginLog(log2);
        return user;
    }
    public static void main(String[] args) throws Exception {
        ObjectStreamDemo converter = new ObjectStreamDemo();
        converter.objectToXml();
        User u = converter.xmlToObject();
        for (LoginLog log : u.getLogs()) {
            if (log != null) {
                System.out.println("访问IP: " + log.getIp());
                System.out.println("访问时间: " + log.getLoginDate());
            }
        }
    }
}