[Java案例]学生管理系统
作者：互联网
环境
jdk 1.8
开发工具-eclipse ide 2018-12
目录
代码
- Student.java
package manger;
public class Student {
private String sno;
private String name;
private String xueyuan;
private String zhuanye;
private String nianji;
private String pwd;
public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getXueyuan() {
return xueyuan;
}
public void setXueyuan(String xueyuan) {
this.xueyuan = xueyuan;
}
public String getZhuanye() {
return zhuanye;
}
public void setZhuanye(String zhuanye) {
this.zhuanye = zhuanye;
}
public String getNianji() {
return nianji;
}
public void setNianji(String nianji) {
this.nianji = nianji;
}
public void print_self()
{
System.out.println("学号:"+sno+" 姓名:"+name+" 学院:"+xueyuan+" 专业:"+zhuanye+" 年级:"+nianji);
}
}
- Award.java
package manger;
public class Award {
private String sno;
private String date;
private String name;
private String level;
private String teacher;
private String department;
public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLevel() {
return level;
}
public void setLevel(String level) {
this.level = level;
}
public String getTeacher() {
return teacher;
}
public void setTeacher(String teacher) {
this.teacher = teacher;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public void show()
{
System.out.println(sno+" "+date+" "+name+" "+level+" "+teacher+" "+department);
}
}
- Teacher.java
package manger;
public class Teacher {
private String tno;
private String name;
private String xueyuan;
private String pwd;
public String getTno() {
return tno;
}
public void setTno(String tno) {
this.tno = tno;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getXueyuan() {
return xueyuan;
}
public void setXueyuan(String xueyuan) {
this.xueyuan = xueyuan;
}
public void print_self()
{
System.out.println(tno+"\t"+name+"\t"+xueyuan);
}
}
- Main.java
package manger;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
private static ArrayList<String> list = new ArrayList<String>();
private static ArrayList<String> list_teacher = new ArrayList<String>();
private static ArrayList<String> award_list = new ArrayList<String>();
private static ArrayList<Student> students = new ArrayList<Student>();
private static ArrayList<Teacher> teachers = new ArrayList<Teacher>();
private static ArrayList<Award> awards = new ArrayList<Award>();
static String student_file = "C:\\Users\\sd\\Documents\\hanaworkspace\\manger\\src\\manger\\student.txt";
static String teacher_file = "C:\\Users\\sd\\Documents\\hanaworkspace\\manger\\src\\manger\\teacher.txt";
static String award_file = "C:\\Users\\sd\\Documents\\hanaworkspace\\manger\\src\\manger\\award.txt";
private static Scanner in;
static void selectOption()
{
System.out.println("-----学生获奖信息收集系统------");
System.out.println("-----1.学生登陆------");
System.out.println("-----2.辅导员登陆------");
System.out.println("-----0.退出------");
}
//加载文件数据到内存中
static void load(String filePath) throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream(filePath)));
for (String line = br.readLine(); line != null; line = br.readLine()) {
list.add(line);
String[] arrOfStr = line.split("\t");
Student s= new Student();
s.setSno(arrOfStr[0]);
s.setName(arrOfStr[1]);
s.setXueyuan(arrOfStr[2]);
s.setZhuanye(arrOfStr[3]);
s.setNianji(arrOfStr[4]);
s.setPwd(arrOfStr[5]);
students.add(s);
}
br.close();
}
//加载文件数据到内存中
static void load_teacher(String filePath) throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream(filePath)));
for (String line = br.readLine(); line != null; line = br.readLine()) {
list.add(line);
String[] arrOfStr = line.split("\t");
Teacher s= new Teacher();
s.setTno(arrOfStr[0]);
s.setName(arrOfStr[1]);
s.setXueyuan(arrOfStr[2]);
s.setPwd(arrOfStr[3]);
teachers.add(s);
}
br.close();
}
static void student_menu()
{
System.out.println("-----学生获奖信息收集系统_学生------");
System.out.println("-----1.查看个人信息-----");
System.out.println("-----2.修改密码------");
System.out.println("-----3.添加个人获奖信息------");
System.out.println("-----4.查看个人获奖信息------");
System.out.println("-----5.删除个人获奖信息------");
System.out.println("-----6.修改个人获奖信息------");
System.out.println("-----0.返回上一菜单------");
}
static void teacher_menu()
{
System.out.println("-----学生获奖信息收集系统_老师------");
System.out.println("-----1.查看个人信息-----");
System.out.println("-----2.修改密码------");
System.out.println("-----3.添加学生获奖信息------");
System.out.println("-----4.查看学生获奖信息------");
System.out.println("-----5.删除学生获奖信息------");
System.out.println("-----6.修改学生获奖信息------");
System.out.println("-----0.返回上一菜单------");
}
//显示学生信息
static void show_student_info(String sno)
{
for(Student s:students)
{
if(sno.equals(s.getSno()))
{
s.print_self();
break;
}
}
}
//显示老师的信息
static void show_teacher_info(String tno)
{
for(Teacher s:teachers)
{
if(tno.equals(s.getTno()))
{
s.print_self();
break;
}
}
}
//更新密码
static void update(String sno_ ,String pwd) throws FileNotFoundException, IOException
{
FileOutputStream fos=new FileOutputStream(new File(student_file));
OutputStreamWriter osw=new OutputStreamWriter(fos);
BufferedWriter bw=new BufferedWriter(osw);
String info;
for(Student s:students)
{
String sno = s.getSno();
String name = s.getName();
String xueyuan = s.getXueyuan();
String zhuanye = s.getZhuanye();
String nianji = s.getNianji();
if(sno_.equals(s.getSno())) {
info = sno + "\t"+name +"\t"+xueyuan+"\t"+zhuanye+"\t"+nianji+"\t"+pwd;
}
else
{
String password = s.getPwd();
info = sno + "\t"+name +"\t"+xueyuan+"\t"+zhuanye+"\t"+nianji+"\t"+password;
}
bw.write(info+"\t\n");
}
bw.close();
osw.close();
fos.close();
}
//更新密码
static void update_teacher(String tno_ ,String pwd) throws FileNotFoundException, IOException
{
FileOutputStream fos=new FileOutputStream(new File(teacher_file));
OutputStreamWriter osw=new OutputStreamWriter(fos);
BufferedWriter bw=new BufferedWriter(osw);
String info;
for(Teacher s:teachers)
{
String tno = s.getTno();
String name = s.getName();
String xueyuan = s.getXueyuan();
if(tno_.equals(s.getTno())) {
info = tno + "\t"+name +"\t"+xueyuan+"\t"+pwd;
}
else
{
String password = s.getPwd();
info = tno + "\t"+name +"\t"+xueyuan+"\t"+password;
}
bw.write(info+"\t\n");
}
bw.close();
osw.close();
fos.close();
}
//更新密码
static void update_pwd(String sno,String old_pwd) throws IOException
{
do
{
String pwd;
System.out.println("请输入新密码");
pwd = in.next();
if(old_pwd.equals(pwd))
{
System.out.println("原密码与新密码相同,请重新输入");
}
else
{
System.out.println("更新密码");
update(sno,pwd);
break;
}
}while(true);
}
//更新密码
static void update_teacher_pwd(String tno,String old_pwd) throws IOException
{
do
{
String pwd;
System.out.println("请输入新密码");
pwd = in.next();
if(old_pwd.equals(pwd))
{
System.out.println("原密码与新密码相同,请重新输入");
}
else
{
System.out.println("更新密码");
update_teacher(tno,pwd);
break;
}
}while(true);
}
static void add_award(String sno) throws IOException
{
FileWriter writer = new FileWriter(award_file, true);
BufferedReader buf = null;
buf = new BufferedReader(new InputStreamReader(System.in));
String date;
String name;
String level;
String teacher;
String department;
System.out.println("请输入获奖时间:");
date= buf.readLine();
System.out.println("请输入奖项名称:");
name= buf.readLine();
System.out.println("请输入获奖等级:");
level= buf.readLine();
System.out.println("请输入指导老师:");
teacher= buf.readLine();
System.out.println("请输入授奖部门:");
department= buf.readLine();
System.out.println(date);
System.out.println(name);
System.out.println(level);
System.out.println(teacher);
System.out.println(department);
Award award = new Award();
award.setSno(sno);
award.setDate(date);
award.setName(name);
award.setLevel(level);
award.setTeacher(teacher);
award.setDepartment(department);
String info;
info = sno + "\t"+date +"\t"+name+"\t"+level+"\t"+teacher+"\t"+department;
awards.add(award);
writer.write(info+"\n");
writer.close();
}
static void print_list()
{
for(int i = 0;i < list.size(); i ++){
System.out.println(list.get(i));
}
}
static void show_award(String sno) throws IOException
{
for(Award a:awards) {
if(a.getSno().equals(sno))
{
a.show();
}
}
}
static void show_all_award() throws IOException
{
for(Award a:awards) {
a.show();
}
}
static void load_award() throws IOException
{
awards.clear();
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream(award_file)));
for (String line = br.readLine(); line != null; line = br.readLine()) {
award_list.add(line);
String[] arrOfStr = line.split("\t");
Award award = new Award();
award.setSno(arrOfStr[0]);
award.setDate(arrOfStr[1]);
award.setName(arrOfStr[2]);
award.setLevel(arrOfStr[3]);
award.setTeacher(arrOfStr[4]);
award.setDepartment(arrOfStr[5]);
awards.add(award);
}
br.close();
}
static void save_awards() throws IOException
{
FileWriter writer = new FileWriter(award_file, false);
for(Award a:awards) {
String info =null;
info = a.getSno()+"\t"+a.getDate()+"\t"+a.getName()+"\t"+a.getLevel()+"\t"+a.getTeacher()+"\t"+a.getDepartment();
writer.write(info+"\n");
}
writer.close();
}
static void delete_award(int del)
{
int step =1;
Award dela=null;
for(Award a:awards) {
if(del==step) {
dela=a;
}
step++;
}
if(dela!=null)
{
awards.remove(dela);
try {
save_awards();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
static void update_award_info(String sno)
{
try {
show_award(sno);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("enter you need to update record:");
int choice = in.nextInt();
int step =1;
Award dela=null;
for(Award a:awards) {
if(choice==step) {
dela=a;
}
step++;
}
if(dela!=null)
{
System.out.println("请输入新的获奖项:");
String name = in.next();
dela.setName(name);
try {
save_awards();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
static void show_student_info()
{
for(Student s:students) {
s.print_self();
}
}
public static void main(String[] args){
int choice = 2;
try {
load(student_file);
load_teacher(teacher_file);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
in = new Scanner(System.in);
do
{
selectOption();
choice = in.nextInt();
System.out.println(choice);
//System.out.println(choice);
if(choice== 1)//学生登陆
{
String sno ;
String pwd;
System.out.println("请输入学号:");
sno=in.next();
System.out.println("请输入密码:");
pwd=in.next();
System.out.println("student_login...");
int flag =-1;
//查找该学号和密码的正确性
for(Student s:students)
{
if(sno.equals(s.getSno()) && pwd.equals(s.getPwd()))
{
flag = 1;
System.out.println("欢迎进入");
break;
}
else
{//失败退出
flag = 0;
System.out.println("学号或密码错误");
break;
}
}
if(flag == 1)
{
//正确,进入学生菜单
System.out.println("student menu");
int choice2 =0;
do
{
student_menu();
System.out.print("enter choice:");
choice2 = in.nextInt();
System.out.println(choice2);
switch(choice2)
{
case 1://查看个人信息
show_student_info(sno);
break;
case 2://修改密码
try {
update_pwd(sno,pwd);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 3://添加个人获奖信息
try {
add_award(sno);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 4://查看个人获奖信息
try {
load_award();
show_award(sno);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 5://删除个人获奖信息
try {
load_award();
show_award(sno);
System.out.println("请输入要删除的行号:");
int del;
del=in.nextInt();
delete_award(del);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 6://修改个人获奖信息
update_award_info(sno);
break;
}
}while(choice2!=0);
}
else {
return;
}
}
if(choice == 2)//辅导员登陆
{
String tno ;
String pwd;
System.out.println("请输入工号:");
tno=in.next();
System.out.println("请输入密码:");
pwd=in.next();
System.out.println("teacher_login...");
int flag =-1;
for(Teacher s:teachers)
{
if(tno.equals(s.getTno()) && pwd.equals(s.getPwd()))
{
flag = 1;
System.out.println("欢迎进入");
break;
}
else
{//失败退出
flag = 0;
System.out.println("工号或密码错误");
break;
}
}
if(flag == 1)
{
//正确,进入教师菜单
System.out.println("tacher menu");
int choice2 =0;
do
{
teacher_menu();
System.out.print("enter choice:");
choice2 = in.nextInt();
System.out.println(choice2);
switch(choice2)
{
case 1://查看个人信息
show_teacher_info(tno);
break;
case 2://修改密码
try {
update_teacher_pwd(tno,pwd);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 3://添加学生获奖信息
try {
show_student_info();
System.out.println("请输入学生学号:");
String sno = in.next();
add_award(sno);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 4://查看学生获奖信息
try {
load_award();
show_all_award();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 5://删除学生获奖信息
try {
load_award();
show_all_award();
System.out.println("请输入要删除的行号:");
int del;
del=in.nextInt();
delete_award(del);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case 6://修改学生获奖信息
try {
load_award();
show_all_award();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("请输入学生学号:");
String sno = in.next();
update_award_info(sno);
break;
}
}while(choice2!=0);
}
else {
return;
}
}
}while(choice!=0);
in.close();
}
}
标签：Java,String,管理系统,sno,System,award,案例,println,out 来源： https://www.cnblogs.com/tailiang/p/11660885.html