java 输入操作 EOFException困扰良久无法解决

java 输入操作 EOFException困扰好久无法解决
package Wardrobe;

import java.io.EOFException;
import java.io.File;
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.ArrayList;
import java.util.Scanner;
源代码：

package Wardrobe;

import java.io.EOFException;
import java.io.File;
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.ArrayList;
import java.util.Scanner;


public class Test {
	
	public static void main(String args[]) throws IOException, ClassNotFoundException, EOFException{
		/**
		 * Data initialization
		 */
		ArrayList<FamilyMember> userData=new ArrayList<FamilyMember>();
		StorageLocation bedroom=new StorageLocation("BedRoom",1);//initialize the default storageLocation
		Wardrobe w1=new Wardrobe(bedroom,1);//initialize the wardrobe
		FamilyMember father=new FamilyMember("Jack",1000,1000);
		FamilyMember mother=new FamilyMember("Rose",1001,1001);
		FamilyMember son=new FamilyMember("Billy",1002,1002);//three default familyMembers
		userData.add(mother);
		userData.add(father);
		userData.add(son);//add default familyMembers to arrayList
		Item i1=new Item("Nike","Black",500,2013,175,father,"Cloth","Nice");
		Item i2=new Item("Adidas","White",300,2012,75,mother,"Bag","Too big");//two default items
		w1.addItem(i1);
		w1.addItem(i2);//add default items to wardrobe
		
		/**
		 * login window
		 */
		System.out.println("===============================");
		System.out.println("|       Wardrobe System       |");
		System.out.println("===============================");
		Scanner scanner=new Scanner(System.in);
		int tempID=0,tempPassword=0;
		boolean userCheckState=false;
		System.out.printf("Please Input The UserID:");
		tempID=scanner.nextInt();
		System.out.printf("Please Input The Password:");
		tempPassword=scanner.nextInt();//scan the ID number and password the user types in
		for(FamilyMember i:userData){//check if it suits one of FamilyMember
			if(i.getID()==tempID&&i.getPassword()==tempPassword){
				System.out.println("Successfully login!");
				userCheckState=true;
				break;
			}
		}
		if(!userCheckState){
			System.out.println("Wrong ID or Password!");
		}
		

	

		FileInputStream fi=new FileInputStream("file");
		ObjectInputStream oi=new ObjectInputStream(fi);

		ArrayList<Wardrobe> SL=new ArrayList<Wardrobe>();
		while(oi.readObject()!=null){
			SL.add((Wardrobe)oi.readObject());//就是这行代码出错。。
		}

		
		/**
		 * function view for users to
		 * find the command which they
		 * want to operate
		 */
		System.out.println("================================");