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Signed-off-by: uboger
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@uboger
uboger committed Aug 10, 2016
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261 changes: 261 additions & 0 deletions Back.java
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//Back.java;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.util.Date;
import java.util.*;
import java.text.*;
import javax.swing.JOptionPane;

public class Back extends Frame {
/**
*
*/
private static final long serialVersionUID = 7670129939284773294L;
Label bookidlb = new Label("图书编号"), readeridlb = new Label("读者编号");
TextField bookidtxt = new TextField(), readeridtxt = new TextField();
Button querybtn = new Button("查询"), borrowbtn = new Button("还书"),
closebtn = new Button("清除");
String SepLine = "--------------------------------------------------";
String[] sep = { "图书信息", "读者信息", "借阅信息" };
Label[] seplabel = new Label[3];
String[] optionname = { "书名：", "作者：", "出版社：", "出版时间：", "定价：", "存量：", "姓名：","类型：", "可借数：", "可借天数：", "借阅日期：","阅读天数：","还书日期" };
Label[] alloption = new Label[13];
Label[] showoption = new Label[13];

public Back() {
setTitle("图书归还");
setLayout(null);
setSize(500, 470);
setResizable(false);
this.setForeground(Color.BLACK);
bookidlb.setBounds(50, 50, 50, 20);
bookidtxt.setBounds(110, 50, 100, 20);
readeridlb.setBounds(220, 50, 50, 20);
readeridtxt.setBounds(280, 50, 100, 20);
querybtn.setBounds(400, 50, 50, 20);
add(bookidlb);
add(bookidtxt);
add(readeridlb);
add(readeridtxt);
add(querybtn);
int lx = 50, ly = 90, i = 0, k = 0;
for (int j = 0; j < alloption.length; j++) {
if (lx > 300) {
lx = 50;
ly = ly + 30;
}
if (ly == 90 || ly == 210 || ly == 300) {
System.out.println(i);// /太奇怪了
seplabel[i] = new Label(SepLine + sep[i] + SepLine);
seplabel[i].setBounds(20, ly, 440, 20);
add(seplabel[i]);
j--;
k++;
if (k <= 1) {
i = 0;
}
if (k == 2 || k == 3) {
i = 1;
}
if (k == 4) {
i = 2;
}
} else {
alloption[j] = new Label(optionname[j]);
showoption[j] = new Label("");
alloption[j].setBounds(lx, ly, 70, 20);
showoption[j].setBounds(lx + 70, ly, 150, 20);
add(alloption[j]);
add(showoption[j]);
}
lx = lx + 250;
}
borrowbtn.setBounds(110, 400, 50, 20);
closebtn.setBounds(310, 400, 50, 20);
add(borrowbtn);
add(closebtn);
borrowbtn.setEnabled(false);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
dispose();
//System.exit(0);
}
});
querybtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
queryActionPerformed(e);
}
});

borrowbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
borrowActionPerformed(e);
}
});
closebtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
setInitialize();
}
});

setLocationRelativeTo(null);
setVisible(true);
}
public void borrowActionPerformed(ActionEvent e) {
String bookid = bookidtxt.getText(), readerid = readeridtxt.getText();
if (!bookid.equals("") && !readerid.equals("")) {
Date currentdate = new Date();
String borrowbackdate = showoption[12].getText();
String sql = "update borrow set back_date='"+borrowbackdate+"',if_back='是'";
sql=sql+"where book_id='"+bookid+"'and reader_id='"+readerid+"'and if_back='否'";
String sql1 = "update book set stock='"
+ (Integer.parseInt(showoption[5].getText()) + 1) + "'"
+ "where id='" + bookid + "'";
int success = DbOp.executeUpdate(sql);
if (success == 1) {
DbOp.executeUpdate(sql1);
JOptionPane.showMessageDialog(null, "还书成功");

} else {
JOptionPane.showMessageDialog(null, "还书数据登记失败！");
}
setInitialize();
}
}

public void queryActionPerformed(ActionEvent e) {
String bookid = bookidtxt.getText(), readerid = readeridtxt.getText();
if (!bookid.equals("") && !readerid.equals("")) {
} else {
JOptionPane.showMessageDialog(null, "图书编号和读者编号都不可以为空");
setInitialize();
return;
}
Book book = BookSelect.SelectBookByID(bookid);
Reader reader = ReaderSelect.SelectReaderByID(readerid);
if (!IfBorrowBack.findBook(bookid, readerid)) {
JOptionPane.showMessageDialog(null,"查询不到该读者借阅这本书");
setInitialize();
return;

} else {

}
if (book != null && reader != null) {
showoption[0].setText(book.getBookname().toString());
showoption[1].setText(book.getAuthor().toString());
showoption[2].setText(book.getPublisher().toString());
showoption[3].setText(book.getPublish_time().toString());
showoption[4].setText(String.valueOf(book.getPrice()));
showoption[5].setText(String.valueOf(book.getStock()));
showoption[6].setText(reader.getReadername());
showoption[7].setText(reader.getReadertype());
showoption[8].setText(String.valueOf(reader.getMax_num()));
showoption[9].setText(String.valueOf(reader.getDays_num()));
} else {
JOptionPane.showMessageDialog(null, "不存在该图书或该读者");
setInitialize();
return;

}
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date currentdate = new Date();
Date thisbookborrowdate=getBorrowDate(bookid,readerid);
String daycutearlyday=getReaderBorrowDays(thisbookborrowdate,currentdate);
showoption[10].setText(sdf.format(thisbookborrowdate));
showoption[12].setText(sdf.format(currentdate));
showoption[11].setText(daycutearlyday);
borrowbtn.setEnabled(true);
bookidtxt.setEditable(false);
readeridtxt.setEditable(false);
}
public boolean IfLeapYear(int year) {// 是否闰年，用于计算时间差
if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) {
return true;
}
return false;
}

public String getReaderBorrowDays(Date date1, Date date2) {// 计算时间差
String sum = "";
int year1 = 0, month1 = 0, day1 = 0;
int year2 = 0, month2 = 0, day2 = 0;
int[] monthdays = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
Calendar cal1 = new GregorianCalendar();
Calendar cal2 = new GregorianCalendar();
cal1.setTime(date1);
year1 = cal1.get(Calendar.YEAR);
month1 = cal1.get(Calendar.MONTH);
day1 = cal1.get(Calendar.DAY_OF_MONTH);
cal2.setTime(date2);
year2 = cal2.get(Calendar.YEAR);
month2 = cal2.get(Calendar.MONTH);
day2 = cal2.get(Calendar.DAY_OF_MONTH);
if (IfLeapYear(year1)) {
monthdays[1] = 29;
} else {
monthdays[1] = 28;
}
int a = 3, count = 0;
while (a > 0) {
if (month1 > monthdays.length - 1) {
year1++;
month1 = 0;
}
if (IfLeapYear(year1)) {
monthdays[1] = 29;
} else {
monthdays[1] = 28;
}
if (day1 > monthdays[month1]) {
month1++;
day1 = 1;
}
day1++;
count++;
if (year1 >= year2 && month1 >= month2 && day1 >= day2) {
a = -1;

}
}
sum = String.valueOf(count);
return sum;
}
public Date getBorrowDate(String bookid, String readerid) {// 获取读者借书日期
String sql, mydate = "";
Date readerdate = new Date();
sql = "select * from borrow where book_id='" + bookid
+ "' and reader_id='" + readerid + "' and if_back='否'";
ResultSet rs = DbOp.executeQuery(sql);
try {
if (rs.next()) {
mydate = rs.getString("borrow_date");
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
readerdate = sdf.parse(mydate);
DbOp.close();
} catch (SQLException e) {
JOptionPane.showMessageDialog(null, "借书日期查询失败");
} catch (ParseException e2) {
JOptionPane.showMessageDialog(null, "借书日期异常");
}
return readerdate;
}

public void setInitialize() {
for (int i = 0; i < showoption.length; i++) {
showoption[i].setText("xxxxx");

}
bookidtxt.setText("");
readeridtxt.setText("");
bookidtxt.setEditable(true);
readeridtxt.setEditable(true);
borrowbtn.setEnabled(false);
}

public static void main(String[] args){
new Back();
}
}
110 changes: 110 additions & 0 deletions Back.java.java
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//Back.java;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.util.Date;
import java.util.*;
import java.text.*;
import javax.swing.JOptionPane;

public class Back extends Frame {
/**
*
*/
private static final long serialVersionUID = 7670129939284773294L;
Label bookidlb = new Label("图书编号"), readeridlb = new Label("读者编号");
TextField bookidtxt = new TextField(), readeridtxt = new TextField();
Button querybtn = new Button("查询"), borrowbtn = new Button("还书"),
closebtn = new Button("退出");
String SepLine = "--------------------------------------------------";
String[] sep = { "图书信息", "读者信息", "借阅信息" };
Label[] seplabel = new Label[3];
String[] optionname = { "书名：", "作者：", "出版社：", "出版时间：", "定价：", "存量：", "姓名：",
"类型：", "可借数：", "可借天数：", "还书日期：" };
Label[] alloption = new Label[11];
Label[] showoption = new Label[11];

public Back() {
setTitle("Book Back");
setLayout(null);
setSize(500, 470);
setResizable(false);
this.setForeground(Color.BLACK);
bookidlb.setBounds(50, 50, 50, 20);
bookidtxt.setBounds(110, 50, 100, 20);
readeridlb.setBounds(220, 50, 50, 20);
readeridtxt.setBounds(280, 50, 100, 20);
querybtn.setBounds(400, 50, 50, 20);
add(bookidlb);
add(bookidtxt);
add(readeridlb);
add(readeridtxt);
add(querybtn);
int lx = 50, ly = 90, i = 0, k = 0;
for (int j = 0; j < alloption.length; j++) {
if (lx > 300) {
lx = 50;
ly = ly + 30;
}
if (ly == 90 || ly == 210 || ly == 300) {
System.out.println(i);// /太奇怪了
seplabel[i] = new Label(SepLine + sep[i] + SepLine);
seplabel[i].setBounds(20, ly, 440, 20);
add(seplabel[i]);
j--;
k++;
if (k <= 1) {
i = 0;
}
if (k == 2 || k == 3) {
i = 1;
}
if (k == 4) {
i = 2;
}
} else {
alloption[j] = new Label(optionname[j]);
showoption[j] = new Label("");
alloption[j].setBounds(lx, ly, 70, 20);
showoption[j].setBounds(lx + 70, ly, 150, 20);
add(alloption[j]);
add(showoption[j]);
}
lx = lx + 250;
}
borrowbtn.setBounds(110, 400, 50, 20);
closebtn.setBounds(310, 400, 50, 20);
add(borrowbtn);
add(closebtn);
borrowbtn.setEnabled(false);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
dispose();
//System.exit(0);
}
});
querybtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//queryActionPerformed(e);
}
});

borrowbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//borrowActionPerformed(e);
}
});
closebtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
DbOp.close();
dispose();
}
});

setLocationRelativeTo(null);
setVisible(true);
}
public static void main(String[] args){
new Back();
}
}
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