文件读取出现失败，不知道要怎么改，能帮我修改一下吗
TeacherInformation：
package dzy;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
public class TeacherInformation {
private String name;
private String age;
private String account;
private String password;
ArrayList<Student> array = new ArrayList<>();
static Scanner scan=new Scanner(System.in);
@Override
public String toString() {
return "TeacherInformation [name=" + name + ", age=" + age + ", account=" + account + ", password=" + password
+ "]";
}
public TeacherInformation() {
super();
}
public TeacherInformation(String name, String age, String account, String password) {
super();
this.name = name;
this.age = age;
this.account = account;
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
void AdmLogin() {
BufferedReader br = null;
try {
String str;
br = new BufferedReader(new FileReader("D:\\java-student\\学生管理系统\\学生.txt"));
while((str=br.readLine())!=null) {
byte[] bytes = str.getBytes();
str = new String(bytes,"UTF-8");
String num = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String name = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String sid = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String dorm = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String classes = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String score = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String password = str;
array.add(new Student(num,name,sid,dorm,classes,score,password));
}
}catch(Exception e1 ) {
System.out.println("读取失败");
e1.printStackTrace();
}finally {
if(br !=null) {
try {
br.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
while(true) {
System.out.println(" -------------------------教师管理系统-------------------------");
System.out.println("\t 0:退出系统并保存\t");
System.out.println("\t 1:查看个人信息\t");
System.out.println("\t 2:修改密码\t");
System.out.println("\t 3:添加学生信息\t");
System.out.println("\t 4:查询某个学生的成绩.");
System.out.println("\t 5.查询某个学生的信息");
System.out.println("\t 6.查看所有学生的信息");
System.out.println("\t 7:修改学生的成绩.");
System.out.println(" --------------------------------------------------------------");
System.out.println("请输入0~7");
String line=scan.nextLine();
switch(line){
case"1":
System.out.println("用户名:"+name+"密码:"+password+"年龄:"+age+"密码:"+account);
break;
case"2":
System.out.println("输入你的新密码:");
String str = scan.nextLine();
password = str;
System.out.println("修改成功，新密码为:"+password);
break;
case"3":
addStudent();
break;
case"4":
System.out.println("输入要查询学生的学号");
String tsid = scan.nextLine();
int i;
for( i = 0;i<array.size();i++) {
if(tsid.equals(array.get(i).getSid())) {
break;
}
}
if(i>=array.size()) {
System.out.println("学生不存在");
}else {
System.out.println("该学生的成绩"+array.get(i).getScore());
}
break;
case"5":
System.out.println("输入查询学生的学号：");
String tsid1 = scan.nextLine();
int i1;
for( i1 = 0;i1<array.size();i1++) {
if(tsid1.equals(array.get(i1).getSid())) {
break;
}
}
if(i1>=array.size()) {
System.out.println("学生不存在");
}else {
System.out.println("该学生的成绩："+array.get(i1).toString());
}
break;
case"6":
for(int j = 0;j<array.size();j++) {
System.out.println("学生:"+array.get(j).getName()+"成绩："+array.get(j).getScore());
}
break;
case"7":
updateStudent();
break;
case"0":
try {
Thread.sleep(1500);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//BufferedWriter wr = null;
try {
String strs;
BufferedWriter wr =new BufferedWriter(new FileWriter("D:\\java-student\\学生管理系统\\学生.txt",false));
for(int d=0;d<array.size();d++) {
Student stu=array.get(d);
str="姓名："+stu.getName()+",序号："+stu.getNum()+",学号："+stu.getSid()+",班级："+stu.getCclass()+",成绩："+stu.getScore()+",密码："+stu.getPassword();
wr.newLine();
wr.write(str);
}
wr.close();
}catch(IOException e) {
e.printStackTrace();
}
try{
BufferedWriter wr = null;
br = new BufferedReader(new FileReader("D:\\java-student\\学生管理系统\\学生.txt"));
while((str=br.readLine())!=null) {
System.out.println(str);
System.out.println(str.length());
byte[] bytes = str.getBytes();
str = new String(bytes,"UTF-8");
String num = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String name = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String sid = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String dorm = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String classes = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String score = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String password = str;
array.add(new Student(num,name,sid,dorm,classes,score,password));
}
}catch(Exception e1 ) {
System.out.println("读取失败");
e1.printStackTrace();
}
finally {
if(br !=null) {
try {
br.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
System.out.println("谢谢使用");
System.exit(0);
}
default:
System.out.println("输入有误，请重新输入！");
}
}
}
void addStudent() {
System.out.println("输入用户名：");
String name =scan.nextLine();
for(int i = 0 ;i<array.size();i++) {
if(name.equals(array.get(i).getName())) {
System.out.println("用户名已存在！");
return;
}
}
System.out.println("输入序号：");
String num = scan.nextLine();
System.out.println("输入学号：");
String sid = scan.nextLine();
System.out.println("输入宿舍：");
String dorm = scan.nextLine();
System.out.println("输入班级：");
String classes = scan.nextLine();
System.out.println("输入成绩：");
String score = scan.nextLine();
System.out.println("输入密码：");
String password = scan.nextLine();
array.add(new Student(num,name,sid,dorm,classes,score,password));
System.out.println("添加成功！");
}
//修改学生信息
public void updateStudent(){
Scanner sc=new Scanner(System.in);
if(array.size()==0){
System.out.println("无信息，请先添加信息再查询！");
return;
}
System.out.println("请输入你要修改的学生学号：");
String sid=sc.nextLine();
System.out.println("输入序号：");
String num = scan.nextLine();
System.out.println("输入姓名：");
String name = scan.nextLine();
System.out.println("输入宿舍：");
String dorm = scan.nextLine();
System.out.println("输入班级：");
String classes = scan.nextLine();
System.out.println("输入成绩：");
String score = scan.nextLine();
System.out.println("输入密码：");
String password = scan.nextLine();
Student s=new Student();
s.setNum(num);
s.setName(name);
s.setSid(sid);
s.setDorm(dorm);
s.setCclass(classes);
s.setScore(score);
s.setPassword(password);
for(int i=0;i<array.size();i++) {
Student student=array.get(i);
if(student.getSid().equals(sid)) {
array.set(i, s);
System.out.println("修改学生信息成功！");
return;
}
}
System.out.println("输入学生信息有误，请重新输入！");
}
}
Login：
package dzy;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import javax.swing.*;
public class Login {
LoginFrame loginFrame=new LoginFrame() ;
void login() {
loginFrame.LoginFrame();
}
}
class LoginFrame extends JFrame {
JFrame thisWindow = this;
private ArrayList <Users> ulists = new ArrayList();
private ArrayList <Student> slists = new ArrayList();
private ArrayList <TeacherInformation> tlists = new ArrayList();
private static final Integer FRAME_WIDTH=375;
private static final Integer FRAME_HEIGHT=300;
private JPanel panel;
private JLabel lblUid;
private JLabel lblPsw;
private JRadioButton administrtor;
private JRadioButton teacher;
private JRadioButton student;
private JButton login;
private Administrator administrator;
private TeacherInformation teac;
private Student stu;
public void LoginFrame() {
this.setTitle("学生管理系统");
this.setBackground(Color.black);
setSize(FRAME_WIDTH,FRAME_HEIGHT);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false);
Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();//获得屏幕大小
int width=screenSize.width;
int height=screenSize.height;
setLocation((width-FRAME_WIDTH)/2,(height-FRAME_HEIGHT)/2);
panel=new JPanel();
panel.setBounds(0,0,FRAME_WIDTH,FRAME_HEIGHT);
panel.setLayout(null);
this.add(panel);
lblUid=new JLabel("账号");
lblUid.setBounds(60,38,120,30);
lblUid.setFont(new Font("宋体",0,16));
lblUid.setForeground(Color.BLACK);
panel.add(lblUid);
lblPsw=new JLabel("密码");
lblPsw.setBounds(60,80,120,30);
lblPsw.setFont(new Font("宋体",0,16));
lblPsw.setForeground(Color.BLACK);
panel.add(lblPsw);
JTextField textUid=new JTextField();//定义账号文本框
textUid.setBounds(120,40,160,30);
this.add(textUid);
JPasswordField textPsw=new JPasswordField();//定义密码文本框
textPsw.setBounds(120,80,160,30);
this.add(textPsw);
login=new JButton("确定");
login.setBounds(115,150,80,25);
panel.add(login);
JButton cannel=new JButton("取消");
cannel.setBounds(205,150,80,25);
panel.add(cannel);
//设置三个按钮位置
administrtor=new JRadioButton("管理员");
teacher=new JRadioButton("教师");
student=new JRadioButton("学生");
teacher.setSelected(true);
ButtonGroup group=new ButtonGroup();
group.add(administrtor);
group.add(teacher);
group.add(student);
administrtor.setBounds(100,210,75,50);
teacher.setBounds(185,210,75,50);
student.setBounds(260,210,75,50);
panel.add(administrtor);
panel.add(teacher);
panel.add(student);
this.add(panel);
login.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String un = textUid.getText();
String pw = textPsw.getText();
String str;
BufferedReader br = null;
try {
br = new BufferedReader(
new FileReader("D:\\java-student\\学生管理系统\\管理员.txt"));
while((str = br.readLine())!=null) {
byte[] bytes = str.getBytes();
str = new String(bytes,"UTF-8");
String us = str.substring(0,str.indexOf(" "));
str = str.substring(str.indexOf(" ")+1);
String ps = str.substring(0,str.indexOf(" "));
str = str.substring(str.indexOf(" ")+1);
String px = str;
ulists.add(new Users(us,ps,px));
}
}catch(Exception e2) {
e2.printStackTrace();
}finally {
if(br !=null) {
try {
br.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
try {
br = new BufferedReader(new FileReader("D:\\java-student\\学生管理系统\\学生.txt"));
while((str=br.readLine())!=null) {
byte[] bytes = str.getBytes();
str = new String(bytes,"UTF-8");
String num = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String name = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String sid = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String dorm = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String classes = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String score = str.substring(0,str.indexOf(","));
str = str.substring(str.indexOf(",")+1);
String password = str;
slists.add(new Student(num,name,sid,dorm,classes,score,password));
}
}catch(Exception e1 ) {
e1.printStackTrace();
}finally {
if(br !=null) {
try {
br.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
try {
br = new BufferedReader(new FileReader("D:\\java-student\\学生管理系统\\teacher.txt"));
while((str=br.readLine())!=null) {
byte[] bytes = str.getBytes();
str = new String(bytes,"UTF-8");
String name = str.substring(0,str.indexOf(" "));
str = str.substring(str.indexOf(" ")+1);
String age = str.substring(0,str.indexOf(" "));
str = str.substring(str.indexOf(" ")+1);
String account = str.substring(0,str.indexOf(" "));
str = str.substring(str.indexOf(" ")+1);
String password = str;
tlists.add(new TeacherInformation(name,age,account,password));
}
}catch(Exception e1) {
e1.printStackTrace();
}finally {
if(br !=null) {
try {
br.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
if(administrtor.isSelected()) {
for(int i=0;i<ulists.size();i++) {
if(
ulists.get(i).getUn().equals(un)&&
ulists.get(i).getPs().equals(pw)) {
JOptionPane.showMessageDialog(panel,"登录成功");
thisWindow.dispose();
administrator = new Administrator(un,pw,"管理");
administrator.AdmLogin();
return;
}
}
JOptionPane.showMessageDialog(panel,"用户名或密码错误");
return;
}
else if(teacher.isSelected()) {
for(int i=0;i<tlists.size();i++) {
if(
tlists.get(i).getName().equals(un)&&
tlists.get(i).getPassword().equals(pw)) {
JOptionPane.showMessageDialog(panel,"登录成功");
thisWindow.dispose();
teac = tlists.get(i);
teac.AdmLogin();
return;
}
}
JOptionPane.showMessageDialog(panel,"用户名或密码错误");
return;
}
else if(student.isSelected()) {
for(int i=0;i<slists.size();i++) {
System.out.println(slists.get(i));
if(
slists.get(i).getName().equals(un)&&
slists.get(i).getPassword().equals(pw)) {
JOptionPane.showMessageDialog(panel,"登录成功");
thisWindow.dispose();
stu = slists.get(i);
stu.AdmLogin();
return;
}
}
JOptionPane.showMessageDialog(panel,"用户名或密码错误");
return;
}
}
});
//取消按钮功能实现
cannel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
thisWindow.dispose();
}
});
setVisible(true);
}
}
