学生登录与查看成绩+验证是否是注册的用户所绑定的信息
将一些登录查看成绩的代码写在前面了。。。学生基本信息的获取在后面直接生成了。。
package StudentMajor;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Comparator;
import java.util.Set;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
// 学生要实现Comparable接口--->以便后期可以使用TreeSet排序(因为涉及到成绩嘛)
public class StudentUser implements Comparable<StudentUser> {
private JFrame jf;
private JButton jb1,jb2;
private JTextField jtf2,jtf3;
private JPanel jp1,jp2,jp3;
private JLabel jlb2,jlb3;//标签
final private File file = new File("e:\\abc\\file\\UserName.txt");
private String name;// 姓名
private String num;// 学号
private int score1,score2,score3;// 成绩
private int sum;// 总成绩
private JTable jtable;
private JScrollPane jsp;
private int countAStudentShow;
private String UserName;
public StudentUser(String name,String num,int a,int b,int c) {
this.name = name;
this.num = num;
this.score1 = a;
this.score2 = b;
this.score3 = c;
this.sum = a+b+c;
}
public StudentUser() {
}
public StudentUser(String name,String num) {
this.name = name;
this.num = num;
}
public void init(String UserName) {
if(!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
this.UserName = UserName;
jf = new JFrame("学生信息绑定");
jf.setSize(300,150);
jf.setLocationRelativeTo(null);
jf.setLayout(new FlowLayout());
jf.setResizable(false);
jb1 = new JButton("确定");
jb2 = new JButton("返回");
jlb2 = new JLabel("请绑定学号：");
jtf2 = new JTextField(10);
jlb3 = new JLabel("请绑定姓名：");
jtf3 = new JTextField(10);
jp1 = new JPanel();
jp2 = new JPanel();
jp3 = new JPanel();
jp1.add(jlb3);
jp1.add(jtf3);
jp2.add(jlb2);
jp2.add(jtf2);
jp3.add(jb1);
jp3.add(jb2);
jf.add(jp2);
jf.add(jp1);
jf.add(jp3);
myEvent();
jf.setVisible(true);
}
public void myEvent() {
//窗体关闭
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jb1.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
// jtf1.getText();
int option;
if(countAStudentShow==0) {
StudentUser stu = StudentTools.searchForStudentByName(jtf2.getText(),jtf3.getText());
if(stu==null)
JOptionPane.showMessageDialog(null, "姓名和学号输入错误！", "提示信息", JOptionPane.WARNING_MESSAGE);
else{
boolean flag = false;
flag = WriteToFile(file,UserName,jtf2.getText());
if(!flag)
return;
option = JOptionPane.showConfirmDialog(null, "请核实您的信息 学号："+jtf2.getText()+"姓名是"+
jtf3.getText());
if(option==JOptionPane.YES_OPTION) {
jlb2.setVisible(false);
jtf2.setVisible(false);
jtf3.setVisible(false);
jp1.setVisible(false);
jb1.setVisible(false);
jsp = jspOfAStudent(stu);
jf.add(jsp);
jf.pack();
countAStudentShow++;
}
}
}else {
jf.remove(jsp);
StudentUser stu = StudentTools.searchForStudentByName(jtf2.getText(),jtf3.getText());
if(stu==null)
JOptionPane.showMessageDialog(null, "没有该学号的学生！", "提示信息", JOptionPane.WARNING_MESSAGE);
else {
option = JOptionPane.showConfirmDialog(null, "请核实您的信息： 学号:"+jtf2.getText()+"姓名是"+
jtf3.getText());
if(option==JOptionPane.YES_NO_OPTION) {
jtf3.getText();
jsp = jspOfAStudent(stu);
jf.add(jsp);
jf.pack();
}
}
}
}
});
jb2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new Login().init();
jf.dispose();
}
});
}
// 学生输入都正确，证明已经注册过或者新注册的用户--》可查看成绩
public JScrollPane jspOfAStudent(StudentUser s) {
if(s==null)
return null;
// 定义二维数组作为表格数据
Object[][] tableData =
{
new Object[]{"","","","","",""},
};
// 定义一维数据作为列标题
Object[] columnTitle = {"姓名", "学号" , "数学","语文","英语","总分"};
//给表格中填入数据
tableData[0][0] = s.getName();
tableData[0][1] = s.getNum();
tableData[0][2] = s.getScore1();
tableData[0][3] = s.getScore2();
tableData[0][4] = s.getScore3();
tableData[0][5] = s.getSum();
jtable = new JTable(tableData,columnTitle);
jtable.enable(false);//让这个表格不可编辑
return new JScrollPane(jtable);
}
public boolean WriteToFile(File file,String name,String num) {
if(file==null) {
System.out.println("没有文件");
return false;
}
BufferedWriter bufw = null;
try {
bufw = new BufferedWriter(new FileWriter(file,true));
int temp = readFileOfStudent(file,name,num);
System.out.println(temp);
if(temp==-1) {
JOptionPane.showMessageDialog(null, "学号输入错误！", "提示信息", JOptionPane.ERROR_MESSAGE);
//jtf.setText("");
//jpf.setText("");
return false;
}else if(temp==1){
return true;
}
// temp=0，该学生没有注册过,则写到注册信息的文件里面
bufw.write(name+" "+num);
bufw.newLine();
} catch (IOException e) {
e.printStackTrace();
}finally {
try {
if(bufw!=null)
bufw.close();
} catch (IOException e) {
System.out.println("文件关闭失败");
}
}
return true;
}
// 学生里面有个读文件方法
public int readFileOfStudent(File file,String UserName,String num) {
BufferedReader bufr = null;
int flag = -1;
try {
bufr = new BufferedReader(new FileReader(file));
} catch (FileNotFoundException e) {
new RuntimeException("该文件不存在！");
}
int count=0;
// 此处用到泛型
String len = null;
String infoReg = " +";
String[]s = null;
try {
while((len = bufr.readLine())!=null) {
count++;//计数-->因为你不仅一个学生去登录。文件里面存了好多学生
// 如果这个学生没有注册过的话（判断时要将文件便利完）
// 取出姓名和学号
s = len.split(infoReg);
// System.out.println(s[0]+" "+s[1]);
// 用户输入的姓名和学号都存在
if(s[0].equals(UserName)&&s[1].equals(num)) {
flag=1;
return flag;
// 用户输入的 姓名学号都不存在（此用户没用绑定过）-->就要将此信息写入到文件
}else if((!s[0].equals(UserName))&&(!s[1].equals(num))) {
flag = 0;
// System.out.println(UserName+num);
// 用户已经绑定过了。但是有些信息输入错误
}else {
return -1;
}
}
} catch (IOException e) {
System.out.println("读取失败！");
e.printStackTrace();
}finally {
try {
if(bufr!=null)
bufr.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(count==0)
return 0;
return flag;
}
// 以下为自动生成的代码
public int getScore1() {
return score1;
}
public void setScore1(int score1) {
this.score1 = score1;
}
public int getScore2() {
return score2;
}
public void setScore2(int score2) {
this.score2 = score2;
}
public int getScore3() {
return score3;
}
public void setScore3(int score3) {
this.score3 = score3;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getNum() {
return num;
}
public void setNum(String num) {
this.num = num;
}
public int getSum() {
return sum;
}
public void setSum(int sum) {
this.sum = sum;
}
@Override // 万一要是采用HashSet的话，就可以用上了，顺便就复写掉方法
public int hashCode() {
return this.hashCode() + this.num.hashCode();
}
@Override // 要用TreeSet肯定要复写equals方法啦
public boolean equals(Object obj) {
if (!(obj instanceof StudentUser))
return false;
StudentUser stu = (StudentUser) obj;
// 此处认为姓名跟学号相同的视为同一个学生
return this.getName().equals(stu.getName()) && this.getNum().equals(stu.getNum());
}
@Override // 按照成绩降序比较（最后逆转比较器就ok了成绩就升序了）
public int compareTo(StudentUser o) {
int num = new Integer(this.sum).compareTo(new Integer(o.sum));
if (num == 0)
return this.name.compareTo(o.name);
return num;
}
}