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package cn.conset.cm;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
/*用字符缓冲流实现用户登录和注册*/
public class Demo06 {
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
while(true){
Scanner sc=new Scanner(System.in);
System.out.println("请选择功能 A(登录) B(注册)");
String option=sc.next();
if("a".equals(option)){
System.out.println("选择了登录功能");
String name=sc.next();
String password=sc.next();
String info=name+" "+password;
String line=null;
FileReader input=new FileReader("C:\\Users\\Administrator\\Desktop\\a.txt");
BufferedReader bufr=new BufferedReader(input);
boolean flag=false;
while((line=bufr.readLine())!=null){
if(info.equals(line)){
flag=true;
break;
}
}
if(flag==true){
System.out.println("登录成功");
}else{
System.out.println("登录失败");
}
}
else if("b".equals(option)){
System.out.println("选择了注册功能");
String name=sc.next();
String password=sc.next();
String info=name+" "+password;
FileWriter input=new FileWriter("C:\\Users\\Administrator\\Desktop\\a.txt");
BufferedWriter buf=new BufferedWriter(input);
buf.write(info);
buf.close();
}else{
System.out.println("您的输入有误");
}
}
}
}