Java swing图书管理系统无注释美化皮肤包版1：含SQL部分和效果图
SQL：
select ts_shuliang,jnum from tushu t join jieyue j on t.ts_id=j.ts_id where j.ts_id='1'
j.ts_id='1'和j.ts_id=1等价
select * from jieyue a inner join yonghu b on a.yh_id=b.yh_id inner join tushu c on a.ts_id=c.ts_id where yh_uname='1';
select ts_shuliang,jnum from tushu t join jieyue j on t.ts_id=j.ts_id where j.ts_id='1'
j.ts_id='1'和j.ts_id=1等价
select *from yonghu
drop table yonghu
create table yonghu(
yh_ID int primary key identity(1,1),
yh_Uname varchar(30) not null,
yh_Pwd varchar(30) not null,
yh_Name varchar(30) not null,
yh_Age int,
yh_Sex varchar(20),
yh_Phone varchar(100),
yh_Address varchar(200),
yh_chubanshe varchar(500),
yh_Q varchar(500),
yh_A varchar(500),
yh_type nvarchar(20) check(yh_type='普通用户' or yh_type='管理员用户'),
);
select * from yh_type
drop table yh_type
create table yh_Type(
yh_typeid int primary key identity(1,1),
yh_typename varchar(100) not null
);
insert into yh_Type values('普通用户');
insert into yh_Type values('管理员用户');
insert into yonghu values('1','11','诗书画唱1',21,'男','19999999999','江西','阳光帅气的男孩子','你爱好多吗？','多','普通用户');
insert into yonghu values('2','22','诗书画唱2',22,'男','29999999999','北京','阳光帅气的男孩子','你看过的书多吗？','多','普通用户');
insert into yonghu values('3','33','诗书画唱3',23,'男','39999999999','上海','阳光帅气的男孩子','你会的技能多吗？','多','普通用户');
insert into yonghu values('4','44','诗书画唱4',24,'男','49999999999','湖南','阳光帅气的男孩子','你喜欢的动漫吗？','多','普通用户');
insert into yonghu values('5','55','诗书画唱5',25,'男','59999999999','浙江','阳光帅气的男孩子','你喜欢的歌曲多吗？','多','管理员用户');
drop table ts_Type
create table ts_Type(
ts_leixingid int primary key identity(1,1),
ts_leixing varchar(100) not null
);
insert into ts_Type values('奇幻');
insert into ts_Type values('爱情');
insert into ts_Type values('日常');
insert into ts_Type values('科普');
drop table tushu
create table tushu(
ts_ID int primary key identity(1,1),
ts_Name varchar(100) not null,
ts_shuliang int,
--ts_leixing varchar(100) not null,
ts_chubanshe varchar(300),
ts_leixingid int
);
--insert into tushu values('《奥秘》',12,'奇幻','人民出版社',1);
--insert into tushu values('《爱你》',2,'爱情','人民出版社',2);
--insert into tushu values('《诗书》',4,'日常','人民出版社',3);
--insert into tushu values('《科普》',3,'科普','人民出版社',4);
insert into tushu values('《奥秘》',12,'人民出版社',1);
insert into tushu values('《爱你》',2,'人民出版社',2);
insert into tushu values('《诗书》',4,'人民出版社',3);
insert into tushu values('《科普》',3,'人民出版社',4);
drop table yonghu, tushu,dingdanxiangqing,ts_Type
drop table tushu
select * from yonghu
select * from yonghu where yh_name='1' and yh_pwd='1' and yh_type='管理员用户'
select * from tushu
select * from ts_Type
select * from dingdan,dingdanxiangqing
select * from dingdanxiangqing
drop table dingdan
create table dingdan(
dingdan_ID int primary key identity(1,1),
yh_ID int,
dingdanxiangqing_ID int
)
insert into dingdan values(1,1);
insert into dingdan values(1,2);
insert into dingdan values(1,3);
insert into dingdan values(2,4);
insert into dingdan values(2,5);
insert into dingdan values(2,6);
insert into dingdan values(3,7);
create table dingdanxiangqing(
dingdanxiangqing_ID int primary key identity(1,1),
sp_ID int,
sp_num int
)
insert into dingdanxiangqing values(1,3);
insert into dingdanxiangqing values(2,4);
insert into dingdanxiangqing values(1,5);
insert into dingdanxiangqing values(3,5);
insert into dingdanxiangqing values(4,2);
insert into dingdanxiangqing values(5,1);
insert into dingdanxiangqing values(3,3);
insert into dingdanxiangqing values(4,3);
select * from yonghu;
select * from shangpin;
select * from sp_Type;
drop table jieyue
create table jieyue(
jid int primary key identity(1,1),
jnum int,
jday int,
yh_id int,
ts_id int
--ALTER TABLE 表名1 add constraint 自己取的约束名 foreign key（字段) references 表名2（字段）
)
insert into jieyue values(3,3,1,1)
insert into jieyue values(2,2,2,2)
insert into jieyue values(4,5,3,3)
insert into jieyue values(5,1,1,4)
--alter table tushu add constraint tushuAndts_type foreign key(yh_leixing) references typetushu (ts_leixing)
--alter table jieyue add constraint jieyueAndyonghu foreign key (yh_id) references users(yh_id)
--alter table jieyue add constraint jieyueAndtushu foreign key(tid) references tushu
select * from tushu a inner join ts_type b on a.ts_leixingid=b.ts_leixingid
select * from ts_type
select * from jieyue a inner join yonghu b on a.yh_id=b.yh_id inner join tushu c on a.ts_id=c.ts_id
select * from jieyue a inner join yonghu b on a.yh_id=b.yh_id inner join tushu c on a.ts_id=c.ts_id
update yonghu set yh_type='管理员用户' where yh_id<4
Java：
1：
package denglu;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
public class chongzhimimajiemian extends JFrame {
static JButton JButton_QuRen = null;
static JLabel JLabel1, JLabel2 = null;
static JPasswordField JPasswordField_qslmm1, JPasswordField_qslmm2 = null;
public chongzhimimajiemian() {
this.setLayout(null);
this.setTitle("重置密码页面");
this.setSize(500, 500);
this.setLocationRelativeTo(null);
this.setVisible(true);
JLabel1 = new JLabel("请输入密码");
JLabel2 = new JLabel("请再次输入密码");
JLabel1.setBounds(100, 100, 100, 30);
this.add(JLabel1);
JLabel2 = new JLabel("请再次输入密码");
JLabel2.setBounds(100, 140, 100, 30);
this.add(JLabel2);
JButton_QuRen = new JButton("确认修改");
JButton_QuRen.setBounds(100, 290, 150, 30);
this.add(JButton_QuRen);
JButton_QuRen.addActionListener(new shijian_queRenXiuGai(this));
JPasswordField_qslmm1 = new JPasswordField();
JPasswordField_qslmm2 = new JPasswordField();
JPasswordField_qslmm1.setBounds(280, 100, 100, 30);
JPasswordField_qslmm2.setBounds(280, 140, 100, 30);
this.add(JPasswordField_qslmm1);
this.add(JPasswordField_qslmm2);
}
}
class shijian_queRenXiuGai implements ActionListener {
static chongzhimimajiemian chuangKou = null;
public shijian_queRenXiuGai(chongzhimimajiemian chuanzhi) {
this.chuangKou = chuanzhi;
}
@Override
public void actionPerformed(ActionEvent arg0) {
if (arg0.getActionCommand().equals("确认修改")) {
JOptionPane.showMessageDialog(null, "点击了修改密码按钮");
String pwd1 = chuangKou.JPasswordField_qslmm1.getText();
String pwd2 = chuangKou.JPasswordField_qslmm2.getText();
if (pwd1.equals(pwd2)) {
String uname = gongjvClass.uname;
String sql = "update yonghu set yh_pwd='" + pwd1
+ "' where yh_uname= '" + uname + "'";
if (DBUtils.ZSG(sql)) {
JOptionPane.showMessageDialog(null, "密码重置成功");
} else {
JOptionPane.showMessageDialog(null, "出现了未知的错误，请重试!");
}
} else {
JOptionPane.showMessageDialog(null, "两次密码输入不一致");
return;
}
}
}
}
2：
package denglu;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class DBUtils {
private static Connection con = null;
private static ResultSet res = null;
private static Statement sta = null;
static {
try {
Class.forName("com.microsoft.sqlserver." + "jdbc.SQLServerDriver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
public static Connection getCon() {
if (con == null) {
try {
con = DriverManager.getConnection(
"jdbc:sqlserver://DESKTOP-49FTFSP;"
+ "databaseName=yonghu", "sa", "1234abcd");
} catch (SQLException e) {
e.printStackTrace();
}
}
return con;
}
public static ResultSet Select(String sql) {
con = getCon();
try {
sta = con.createStatement();
res = sta.executeQuery(sql);
} catch (SQLException e) {
e.printStackTrace();
}
return res;
}
public static boolean ZSG(String sql) {
boolean b = false;
con = getCon();
try {
sta = con.createStatement();
int num = sta.executeUpdate(sql);
if (num > 0) {
b = true;
}
} catch (SQLException e) {
e.printStackTrace();
}
return b;
}
}
