test.java

此ｊａｖａ代码用以实现图书租赁系统

package edu.sccp.lhq.test;


import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;

import edu.sccp.lhq.domain.AdminInfo;

public class Test {
	public static void main(String[] args){
		AdminInfo admin = new AdminInfo();
		admin.setUserName("lhq");
		admin.setUserPassword("123");
		admin.setUserPower(1);
		
		HashMap hashMap = new HashMap();
		
		hashMap.put(admin.getUserName(), admin);
		System.out.println(hashMap);
		AdminInfo admin1 = new AdminInfo();
		admin1.setUserName("admin");
		admin1.setUserPassword("123");
		admin1.setUserPower(0);
		
		hashMap.put(admin1.getUserName(), admin1);
		System.out.println(hashMap);
		ObjectOutputStream out;
		ObjectInputStream  in;
		try {
			out = new ObjectOutputStream(new FileOutputStream("c:/adminInfo.txt"));
			out.writeObject(hashMap);
		} catch (FileNotFoundException e) {
			
			e.printStackTrace();
		} catch (IOException e) {
		
			e.printStackTrace();
		}
		
		try{
			in = new ObjectInputStream(new FileInputStream("c:/adminInfo.txt"));
			hashMap = (HashMap)in.readObject();
	    	Set set = hashMap.keySet();
	    	Iterator it = set.iterator();
	    	while(it.hasNext()){
	    		String s = (String)it.next();
	    		AdminInfo adminInfo = (AdminInfo)hashMap.get(s);
	    		System.out.println(adminInfo);
	    	}

			
		}catch(Exception e){
			e.printStackTrace();
		}
		
		
	}
}