2019-3-8

第一题：

package com.io;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;

public class WriterDOme2 {

    public static void main(String[] args) {
        InputStreamReader f = null;
        BufferedReader br = null;
        Writer w = null;
        BufferedWriter bw = null;
        try {
            f = new InputStreamReader(new FileInputStream("d:/chenxiaolong/你说呢.txt"),"GBK");
            w= new FileWriter("d:/chenxiaolong/我说的.txt");
            br = new BufferedReader(f);
            StringBuffer s = new StringBuffer();
            bw = new BufferedWriter(w);
            String str = null;
            while((str=br.readLine())!=null) {
                s.append(str);
            }
            System.out.println("没替换:"+s);
            String a =s.toString().replace("（x）", "是小明").toString().replace("（y）", "这话");
            bw.write(a);
            bw.flush();
            System.out.println("替换后:"+a);
            br.close();
            bw.close();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }    
    }
}

输出结果图：

 

第二题：

package com.io;

import java.io.Serializable;

/**
 * 会员类
 * @author 陈明
 *
 */
public class User implements Serializable{
    private String nome;
    private int ID ;
    private  String mima;
    public String getNome() {
        return nome;
    }
    public void setNome(String nome) {
        this.nome = nome;
    }
    public int getID() {
        return ID;
    }
    public void setID(int iD) {
        ID = iD;
    }
    public String getMima() {
        return mima;
    }
    public void setMima(String mima) {
        this.mima = mima;
    }
    
}

package com.io;

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.HashMap;
import java.util.Map;
import java.util.Scanner;

/**
 * 登陆测试类
 * @author 陈明
 *
 */
public class UserObjDome {
    User user = new User();
    Scanner sc = new Scanner(System.in);
    Map<Integer,User> map = new HashMap();
    
    /**
     * 系列化方法
     * 
     * */
    public void xuliehua(Map map) {
        ObjectOutputStream obj = null;
        FileOutputStream f = null;
        try {
            f = new FileOutputStream("d:/chenxiaolong/map.txt");
            obj = new ObjectOutputStream(f);
            obj.writeObject(map);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                obj.close();
                f.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
        
    }
    /**
     * 反序列化方法
     */
    public Map fanxuliehua() {
        ObjectInputStream obj2 = null;
        FileInputStream f2 = null;
        try {
            f2 = new FileInputStream("d:/chenxiaolong/map.txt");
            obj2 = new ObjectInputStream(f2);
            map =(Map)obj2.readObject();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }finally {
            try {
                obj2.close();
                f2.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            
        }
        return map;

    }
    /**
     * 注册方法
     * 
     */
    public void   zhuci() {
        
        //调用反序列化方法
        Map m =fanxuliehua();
        System.out.println("请输入用户命");
        user.setMima(sc.next());
        System.out.println("请输入登入ID");
        int id=sc.nextInt();
        while(true) {
            if(map.containsKey(id)) {
                System.out.println("ID已经存在请重新输入");
            }else {
                user.setID(id);
                break;
            }
        }
        System.out.println("请输入用密码");
        user.setMima(sc.next());
        //把信息存在Map集合中
        m.put(id, user);
        //调用系列化方法
        xuliehua(m);
    }
    /**
     * 登入方法
     */
    public void  dnenglu() {
        //掉用反序列化方法
        
        Map<Integer, User> m =fanxuliehua();
        System.out.println("请输入您的ID");
        int id = sc.nextInt();
        
        
        if(map.containsKey(id)) {
            System.out.println("请输入您的密码");
            String  mima = sc.next();
            if(mima.equals(map.get(id).getMima())) {
                System.out.println("登录成功");
            }else {
                System.out.println("密码不正确");
            }
        }else {
            System.out.println("没有此ID重新请输入");
        }
    }
    
    /**
     * 操作界面方法
     */
    public void jiem() {
        System.out.println("请输入您要操作的功能   1，注册      2，登录");
        int s =sc.nextInt();
        if(s==1) {
            zhuci();
        }else {
            dnenglu();
        }
    }
}

package com.io;
/**
 * 
 * @author 陈明
 *
 */
public class UserTest {

    public static void main(String[] args) {
        UserObjDome user = new UserObjDome();
        user.jiem();
    }

}

输出结果图：