1 package object.io; 2  3 import java.io.FileInputStream; 4 import java.io.FileNotFoundException; 5 import java.util.Scanner; 6  7 public class Login { 8     public static void main(String[] args) throws Exception { 9         Scanner sc=new Scanner(System.in);10         FileInputStream input=new FileInputStream("D:\\Program Files (x86)\\io\\login.txt");11         int length=0;12         String string=null;13         14         byte[] array=new byte[input.available()+1024];15         while((length=input.read(array))!=-1){16             string=new String(array,0,length);17             System.out.println(string);18         }19         20         String[] users=string.split("&&");//每个人的登录信息称为一组21         22         System.out.println("请输入账户名：");23         String name=sc.next();24         25         System.out.println("请输入密码：");26         String pwd=sc.next();27         //拼接输入的账号密码28          String inputUser=name+"，"+pwd;29         //循环数组判断是否有当前账号密码30                 boolean flag=false;31                for(String u:users){32                    if(inputUser.equals(u)){33                        System.out.println("登录成功");34                        flag=true;35                        break;36                    }37                }38                //***********39                if(flag==false){40                    System.out.println("失败");41                }42             43     44     }45 }