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一、前言
本學期學習了JAVA語言，在學期的結束，寫一個有操作界面，與數據庫關聯的管理系統，用來鞏固自己本學習所學的知識。
用到的知識：JAVA基礎，JAVA界面設計（GUI），Oracle數據庫（需要掌握數據庫的基本操作語句），鏈接數據庫。
使用的開發工具：MyEclipse Professional 2014
二、設計
我們管理的屬性有：項目編號，項目名稱，參與人員，負責人，項目開始時間，結束時間。科研項目系統主要有四個功能，對科研項目的增加、刪除、修改、查詢。以及為增加系統安全性所設計的登陸模式。
2.1 增加：向數據庫的表中增加科研項目的所有信息
添加后在控制臺使用SQL語句查找，驗證是否已添加至數據庫中。
2.2 查詢：通過具有唯一性的項目編號查找該項目的所有信息
2.3 修改：根據項目編號選中要修改的項目，并重新輸入項目信息進行修改
2.4 刪除：通過具有唯一性的項目編號刪除對應項目的所有信息
三、窗體源碼
3.1 登錄界面
package 科研信息管理系統;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LoginWindows extends Frame implements WindowListener,ActionListener
{
public Label lgLabel; //用戶名標簽
public Label pwdLabel; //密碼標簽
public TextField lgText; //用戶名文本框
public TextField pwdText; //密碼文本框
public Button lgBt; //登錄按鈕
public Button quitBt; //退出按鈕
public LoginWindows()
{
super();
this.setSize(400, 300);
this.setTitle("科研信息管理系統");
this.setLayout(null);
lgLabel=new Label();
lgLabel.setText("登錄賬號:");
lgLabel.setSize(60, 30);
lgLabel.setLocation(70,70);
pwdLabel=new Label();
pwdLabel.setText("密 碼:");
pwdLabel.setSize(60,30);
pwdLabel.setLocation(70, 150);
lgText=new TextField();
lgText.setSize(180, 30);
lgText.setLocation(140, 70);
pwdText=new TextField();
pwdText.setSize(180,30);
pwdText.setLocation(140, 150);
lgBt=new Button();
lgBt.setLabel("登錄");
lgBt.setSize(60,30);
lgBt.setLocation(120, 220);
quitBt=new Button();
quitBt.setLabel("退出");
quitBt.setSize(60,30);
quitBt.setLocation(220,220);
quitBt.addActionListener(this);
lgBt.addActionListener(this);
this.addWindowListener(this);
this.add(lgLabel);
this.add(pwdLabel);
this.add(lgText);
this.add(pwdText);
this.add(lgBt);
this.add(quitBt);
this.setVisible(true);
}
public static void main(String args[])
{
LoginWindows main=new LoginWindows();
}
@Override
public void actionPerformed(ActionEvent e) {
Button bt=(Button) e.getSource();
if(bt.getLabel().equals("退出"))
{
System.exit(0);
}
else {
if ((lgText.getText().equals(""))||(pwdText.getText().equals("")))
{
JOptionPane.showMessageDialog(this,"賬號或密碼為空");
}
else
{
if ((lgText.getText().equals("admin"))&&(pwdText.getText().equals("111")))
//if((lgText.getText().equals(""))||(pwdText.getText().equals("")))
{
this.setVisible(false);
// Sqlwindow sql=new Sqlwindow();
WindowsView w=new WindowsView();
w.SciencePro();
}
else {
JOptionPane.showMessageDialog(this, "沒有權限");
}
}}}
@Override
public void windowOpened(WindowEvent e) {
// TODO Auto-generated method busb
}
@Override
public void windowClosing(WindowEvent e) {
// TODO Auto-generated method busb
System.exit(0);
}
@Override
public void windowClosed(WindowEvent e) {
// TODO Auto-generated method busb
}
@Override
public void windowIconified(WindowEvent e) {
// TODO Auto-generated method busb
}
@Override
public void windowDeiconified(WindowEvent e) {
// TODO Auto-generated method busb
}
@Override
public void windowActivated(WindowEvent e) {
// TODO Auto-generated method busb
}
@Override
public void windowDeactivated(WindowEvent e) {
// TODO Auto-generated method busb
}
}
3.2主窗體源碼
package 科研信息管理系統;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.tree.*;
public class WindowsView implements TreeSelectionListener,ActionListener //窗口類
{
JFrame main;
JPanel leftPa;
JPanel upPa;
JPanel downPa;
///查詢用控件
JLabel numLa; //通過項目編號查詢
JTextField numTxt;
JButton numBt;
JTextField nameTxt; //顯示項目名稱的文本框
JTextField peopleTxt; //顯示參與人員
JTextField principalTxt; //顯示主要負責人
JTextField timeStartTxt; //顯示開始時間的文本框
JTextField timeEndTxt; //顯示預期結束時間的文本框
//增加用控件
JLabel anumLa;
JLabel anameLa;
JLabel apeopleLa;
JLabel aprincipalLa;
JLabel atimeStartLa;
JLabel atimeEndLa;
JTextField anumTxt;
JTextField anameTxt;
JTextField apeopleTxt;
JTextField aprincipalTxt;
JTextField atimeStartTxt;
JTextField atimeEndTxt;
JButton addBt;
JTable showTable;
//刪除用控件
JLabel dnumLa;
JButton dnumBt;
JTextField dnumTxt;
//修改用控件
JLabel alnumLa;
JTextField allnumTxt;
JButton alseBt;
JButton alBt;
JLabel allnumLa;
JLabel alnameLa;
JLabel alpeopleLa;
JLabel alprincipalLa;
JLabel altimeStartLa;
JLabel altimeEndLa;
JTextField alnumTxt;
JTextField alnameTxt;
JTextField alpeopleTxt;
JTextField alprincipalTxt;
JTextField altimeStartTxt;
JTextField altimeEndTxt;
public void SciencePro()
{
main=new JFrame();
main.setSize(800,800);
main.setTitle("科研信息管理");
main.setLayout(null);
leftPa=new JPanel();
leftPa.setSize(150, 600);
leftPa.setLocation(0, 0);
leftPa.setBackground(Color.white);
initLeftPanel();
main.add(leftPa);
upPa=new JPanel();
upPa.setSize(650, 400);
upPa.setLocation(150, 0);
upPa.setBackground(Color.gray);
main.add(upPa);
downPa=new JPanel();
downPa.setSize(650, 400);
downPa.setLocation(150, 400);
downPa.setBackground(Color.orange);
main.add(downPa);
main.setVisible(true);
}
private void initLeftPanel()
{
String[] strs={"查詢","增加","刪除","修改"};
JTree tree=new JTree(strs);
tree.addTreeSelectionListener(this);
leftPa.add(tree);
}
public void valueChanged(TreeSelectionEvent e)
{
JTree tree=(JTree)e.getSource();
DefaultMutableTreeNode selectionNode =(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
String str=selectionNode.toString();
if(str.equals("查詢"))
{
initUpDownPaWhenSearch();
}
if(str.equals("增加"))
{
initUpDownPaWhenAdd();
}
if(str.equals("刪除"))
{
initUpDownPaWhenDelete();
}
if(str.equals("修改"))
{
initUpDownPaWhenAlert();
}
}
private void initUpDownPaWhenSearch()
{
//清空上下面板上的控件
upPa.removeAll();
downPa.removeAll();
//動態的加載上面板的控件
upPa.setLayout(null);
numLa=new JLabel();
numLa.setText("請輸入項目編號");
numLa.setLocation(40, 60);
numLa.setSize(100, 40);
numTxt=new JTextField();
numTxt.setLocation(180, 60);
numTxt.setSize(200, 30);
numBt=new JButton();
numBt.setText("查詢");
numBt.addActionListener(this);
numBt.setLocation(250, 160);
numBt.setSize(60, 30);
upPa.add(numLa);
upPa.add(numTxt);
upPa.add(numBt);
upPa.validate();
upPa.repaint();
numBt.addActionListener(this);
//動態的加載下面板的控件
nameTxt=new JTextField();
nameTxt.setLocation(80, 50);
nameTxt.setSize(300, 30);
peopleTxt=new JTextField();
peopleTxt.setLocation(80, 100);
peopleTxt.setSize(300, 30);
principalTxt=new JTextField();
principalTxt.setLocation(80, 150);
principalTxt.setSize(300, 30);
timeStartTxt=new JTextField();
timeStartTxt.setLocation(80, 200);
timeStartTxt.setSize(300, 30);
timeEndTxt=new JTextField();
timeEndTxt.setLocation(80,250);
timeEndTxt.setSize(300, 30);
downPa.setLayout(null);
downPa.add(nameTxt);
downPa.add(peopleTxt);
downPa.add(principalTxt);
downPa.add(timeStartTxt);
downPa.add(timeEndTxt);
downPa.validate();
downPa.repaint();
}
public void actionPerformed(ActionEvent e)
{
JButton bt=(JButton)e.getSource();
//bt.addActionListener(this);
if(bt.getText().equals("查詢"))
{
if(numTxt.getText().equals(""))
{
JOptionPane.showMessageDialog(null, "請輸入項目編號");
}
else
{
DealSearch deal=new DealSearch();
String inf=deal.findProByNum(Integer.parseInt(numTxt.getText().trim()));
if((inf!=null)&&(!inf.equals("")))
{
String[] strs=inf.split(",");
nameTxt.setText(strs[1]);
peopleTxt.setText(strs[2]);
principalTxt.setText(strs[3]);
timeStartTxt.setText(strs[4]);
timeEndTxt.setText(strs[5]);
}
}
}
if(bt.getText().equals("新增"))
{
if (anumTxt.getText().equals("")||anameTxt.getText().equals("")||apeopleTxt.getText().equals("")||aprincipalTxt.getText().equals("")||atimeStartTxt.getText().equals("")||atimeEndTxt.getText().equals(""))
{
JOptionPane.showMessageDialog(null, "輸入中不能有空值！！");
}
else
{
ScienceProject s=new ScienceProject();
s.SetNum(Integer.parseInt(anumTxt.getText()));
s.SetName(anameTxt.getText());
s.SetPeople(apeopleTxt.getText());
s.SetLeader(aprincipalTxt.getText());
s.SetTimeStart(atimeStartTxt.getText());
s.SetTimeFinish(atimeEndTxt.getText());
DealAdd deal=new DealAdd();
deal.add(s);
}
}
if(bt.getText().equals("刪除"))
{
if(Integer.parseInt(dnumTxt.getText())==0)
{
JOptionPane.showMessageDialog(null, "不能刪除空的項目編號！！");
}
else
{
DealDelete deal=new DealDelete();
deal.delete(Integer.parseInt(dnumTxt.getText().trim()));
}
}
if(bt.getText().equals("提交"))
{
if(Integer.parseInt(allnumTxt.getText())==0)
{
JOptionPane.showMessageDialog(null, "不能修改空的項目編號！！");
}
else
{
DealSub deal=new DealSub();
deal.submit(Integer.parseInt(allnumTxt.getText()));
}
}
if(bt.getText().equals("修改"))
{
if (alnameTxt.getText().equals("")||alpeopleTxt.getText().equals("")||alprincipalTxt.getText().equals("")||altimeStartTxt.getText().equals("")||altimeEndTxt.getText().equals(""))
{
JOptionPane.showMessageDialog(null, "輸入中不能有空值！！");
}
else
{
ScienceProject s=new ScienceProject();
s.SetNum(Integer.parseInt(allnumTxt.getText()));
s.SetName(alnameTxt.getText());
s.SetPeople(alpeopleTxt.getText());
s.SetLeader(alprincipalTxt.getText());
s.SetTimeStart(altimeStartTxt.getText());
s.SetTimeFinish(altimeEndTxt.getText());
DealAlter deal=new DealAlter();
deal.alter(s);
}
}
}
private void initUpDownPaWhenAdd()
{
//清空上下面板上的控件
upPa.removeAll();
downPa.removeAll();
//動態的加載上面板的控件
upPa.setLayout(null);
anumLa=new JLabel();
anumLa.setText("請輸入要增加的項目編號");
anumLa.setLocation(30, 50);
anumLa.setSize(150, 40);
anumTxt=new JTextField();
anumTxt.setLocation(200, 50);
anumTxt.setSize(250, 30);
anameLa=new JLabel();
anameLa.setText("請輸入要增加的項目名稱");
anameLa.setLocation(30, 100);
anameLa.setSize(150, 40);
anameTxt=new JTextField();
anameTxt.setLocation(200, 100);
anameTxt.setSize(250, 30);
apeopleLa=new JLabel();
apeopleLa.setText("請輸入項目參與人員");
apeopleLa.setLocation(30, 150);
apeopleLa.setSize(150, 40);
apeopleTxt=new JTextField();
apeopleTxt.setLocation(200, 150);
apeopleTxt.setSize(250, 30);
aprincipalLa=new JLabel();
aprincipalLa.setText("請輸入項目負責人");
aprincipalLa.setLocation(30, 200);
aprincipalLa.setSize(150, 40);
aprincipalTxt=new JTextField();
aprincipalTxt.setLocation(200, 200);
aprincipalTxt.setSize(250, 30);
atimeStartLa=new JLabel();
atimeStartLa.setText("請輸入項目開始時間");
atimeStartLa.setLocation(30, 250);
atimeStartLa.setSize(150, 40);
atimeStartTxt=new JTextField();
atimeStartTxt.setLocation(200, 250);
atimeStartTxt.setSize(250, 30);
atimeEndLa=new JLabel();
atimeEndLa.setText("請輸入項目結束時間");
atimeEndLa.setLocation(30, 300);
atimeEndLa.setSize(150, 40);
atimeEndTxt=new JTextField();
atimeEndTxt.setLocation(200, 300);
atimeEndTxt.setSize(250, 30);
addBt=new JButton();
addBt.setText("新增");
addBt.addActionListener(this);
//addBt.addMouseListener(this);
addBt.setLocation(250, 340);
addBt.setSize(60, 30);
upPa.add(addBt);
upPa.add(anumLa);
upPa.add(anameLa);
upPa.add(apeopleLa);
upPa.add(aprincipalLa);
upPa.add(atimeStartLa);
upPa.add(atimeEndLa);
upPa.add(anameTxt);
upPa.add(anumTxt);
upPa.add(apeopleTxt);
upPa.add(aprincipalTxt);
upPa.add(atimeStartTxt);
upPa.add(atimeEndTxt);
upPa.validate();
upPa.repaint();
downPa.validate();
downPa.repaint();
}
private void initUpDownPaWhenDelete()
{
//清空上下面板上的控件
upPa.removeAll();
downPa.removeAll();
//動態的加載上面板的控件
upPa.setLayout(null);
numLa=new JLabel();
numLa.setText("請輸入要刪除的項目編號");
numLa.setLocation(40, 60);
numLa.setSize(150, 40);
dnumTxt=new JTextField();
dnumTxt.setLocation(200, 60);
dnumTxt.setSize(250, 30);
dnumBt=new JButton();
dnumBt.setText("刪除");
dnumBt.addActionListener(this);
dnumBt.setLocation(270, 170);
dnumBt.setSize(60, 30);
upPa.add(numLa);
upPa.add(dnumTxt);
upPa.add(dnumBt);
upPa.validate();
upPa.repaint();
downPa.validate();
downPa.repaint();
}
private void initUpDownPaWhenAlert()
{
//清空上下面板上的控件
upPa.removeAll();
downPa.removeAll();
//動態的加載上面板的控件
upPa.setLayout(null);
alnumLa=new JLabel();
alnumLa.setText("請輸入要修改的項目編號");
alnumLa.setLocation(40, 60);
alnumLa.setSize(150, 40);
alseBt=new JButton();
alseBt.setText("提交");
alseBt.addActionListener(this);
alseBt.setLocation(270, 170);
alseBt.setSize(60, 30);
allnumTxt=new JTextField();
allnumTxt.setLocation(200, 60);
allnumTxt.setSize(200, 30);
upPa.add(alnumLa);
upPa.add(alseBt);
upPa.add(allnumTxt);
upPa.validate();
upPa.repaint();
alBt=new JButton();
alBt.setText("修改");
alBt.addActionListener(this);
alBt.setLocation(450, 170);
alBt.setSize(60, 30);
/* allnumLa=new JLabel();
allnumLa.setText("請輸入修改后的項目編號");
allnumLa.setLocation(30, 00);
allnumLa.setSize(150, 40);
alnumTxt=new JTextField();
alnumTxt.setLocation(180, 00);
alnumTxt.setSize(250, 30);*/
alnameLa=new JLabel();
alnameLa.setText("請輸入修改后項目名稱");
alnameLa.setLocation(30, 50);
alnameLa.setSize(150, 40);
alnameTxt=new JTextField();
alnameTxt.setLocation(180, 50);
alnameTxt.setSize(250, 30);
alpeopleLa=new JLabel();
alpeopleLa.setText("請重設參與人員");
alpeopleLa.setLocation(30, 100);
alpeopleLa.setSize(150, 40);
alpeopleTxt=new JTextField();
alpeopleTxt.setLocation(180, 100);
alpeopleTxt.setSize(250, 30);
alprincipalLa=new JLabel();
alprincipalLa.setText("請重設項目負責人");
alprincipalLa.setLocation(30, 150);
alprincipalLa.setSize(150, 40);
alprincipalTxt=new JTextField();
alprincipalTxt.setLocation(180, 150);
alprincipalTxt.setSize(250, 30);
altimeStartLa=new JLabel();
altimeStartLa.setText("請重設項目開始時間");
altimeStartLa.setLocation(30, 200);
altimeStartLa.setSize(150, 40);
altimeStartTxt=new JTextField();
altimeStartTxt.setLocation(180, 200);
altimeStartTxt.setSize(250, 30);
altimeEndLa=new JLabel();
altimeEndLa.setText("請重設項目結束時間");
altimeEndLa.setLocation(30, 250);
altimeEndLa.setSize(150, 40);
altimeEndTxt=new JTextField();
altimeEndTxt.setLocation(180, 250);
altimeEndTxt.setSize(250, 30);
downPa.add(alBt);
//downPa.add(allnumLa);
downPa.add(alnameLa);
downPa.add(alpeopleLa);
downPa.add(alprincipalLa);
downPa.add(altimeStartLa);
downPa.add(altimeEndLa);
downPa.add(alnameTxt);
//downPa.add(alnumTxt);
downPa.add(alpeopleTxt);
downPa.add(alprincipalTxt);
downPa.add(altimeStartTxt);
downPa.add(altimeEndTxt);
downPa.setLayout(null);
downPa.validate();
downPa.repaint();
}
}
3.3 組織SQL語句，鏈接數據庫部分
package 科研信息管理系統;
import java.sql.*;
import java.util.Scanner;
public class Sql {
public void AddScienceProject(ScienceProject scienceProject)
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String conStr="jdbc:oracle:thin:@localhost:1521:XE";
Connection con=DriverManager.getConnection(conStr,"system","1");
StringBuffer sql=new StringBuffer("insert into science values("+scienceProject.GetNum()+",'"+scienceProject.GetName()+"','"+scienceProject.GetPeople()+"','"+scienceProject.GetLeader()+"','"+scienceProject.GetTimeStart()+"','"+scienceProject.GetTimeFinish()+"')");
Statement st=con.createStatement();
st.execute(sql.toString());
st.close();
con.close();
}
catch (Exception e)
{
// TODO: handle exception
System.out.println(e.toString());
}
}
public void DelScienceProject(ScienceProject scienceProject)
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String conStr="jdbc:oracle:thin:@localhost:1521:XE";
Connection con=DriverManager.getConnection(conStr,"system","1");
StringBuffer sql=new StringBuffer("delete from science where num="+scienceProject.GetNum()+"");
Statement st=con.createStatement();
st.execute(sql.toString());
st.close();
con.close();
}
catch (Exception e)
{
// TODO: handle exception
System.out.println(e.toString());
}
}
public void UpdScienceProject(ScienceProject scienceProject)
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String conStr="jdbc:oracle:thin:@localhost:1521:XE";
Connection con=DriverManager.getConnection(conStr,"system","1");
StringBuffer sql =new StringBuffer("update science set name='"+scienceProject.GetName()+"',workpeople='"+scienceProject.GetPeople()+"',manager='"+scienceProject.GetLeader()+"',timestart='"+scienceProject.GetTimeStart()+"',timeend='"+scienceProject.GetTimeFinish()+"' where num="+scienceProject.GetNum()+"");
Statement st=con.createStatement();
st.execute(sql.toString());
st.close();
con.close();
}
catch (Exception e)
{
// TODO: handle exception
System.out.println("修改異常");
System.out.println(e.toString());
}
}
public ScienceProject Findbynum(int num)
{
ScienceProject scienceProject=new ScienceProject();
try
{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String conStr="jdbc:oracle:thin:@localhost:1521:XE";
Connection con=DriverManager.getConnection(conStr,"system","1");
StringBuffer sql=new StringBuffer("select * from science where num="+num+"");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery(sql.toString());
while(rs.next())
{
scienceProject.SetNum(rs.getInt(1));
scienceProject.SetName(rs.getString(2));
scienceProject.SetPeople(rs.getString(3));
scienceProject.SetLeader(rs.getString(4));
scienceProject.SetTimeStart(rs.getString(5));
scienceProject.SetTimeFinish(rs.getString(6));
}
st.close();
con.close();
}
catch (Exception e) {
// TODO: handle exception
System.out.println(e.toString());
}
return scienceProject;
}
public ScienceProject Look()
{
ScienceProject scienceProject=new ScienceProject();
try
{
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String conStr="jdbc:oracle:thin:@localhost:1521:XE";
Connection con=DriverManager.getConnection(conStr,"system","1");
StringBuffer sql=new StringBuffer("select *from science");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery(sql.toString());
while(rs.next())
{
scienceProject.SetNum(rs.getInt(1));
scienceProject.SetName(rs.getString(2));
scienceProject.SetPeople(rs.getString(3));
scienceProject.SetLeader(rs.getString(4));
scienceProject.SetTimeStart(rs.getString(5));
scienceProject.SetTimeFinish(rs.getString(6));
}
st.close();
con.close();
}
catch (Exception ex)
{
// TODO: handle exception
System.out.println(ex.toString());
}
return scienceProject;
}
public static void main(String args[])
{
}
}
3.4 增刪查改對應處理的源碼
//處理增加
package 科研信息管理系統;
import javax.swing.JOptionPane;
public class DealAdd
{
public DealAdd()
{}
public void add(ScienceProject s)
{
Sql sql=new Sql();
if(sql.Findbynum(s.GetNum()).GetNum()!=0)
{
JOptionPane.showMessageDialog(null, "該項目已存在，請重新輸入！");
}
else
{
sql.AddScienceProject(s);
JOptionPane.showMessageDialog(null,"增加成功");
}
}
}
由設計部分可以看到，刪除時需要先提交項目編號，所以，需要處理提交事件
//處理提交
package 科研信息管理系統;
import javax.swing.JOptionPane;
public class DealSub
{
DealSub()
{}
public void submit(int num)
{
Sql sql =new Sql();
if(sql.Findbynum(num).GetNum()==0)
{
JOptionPane.showMessageDialog(null, "不存在該項目");
}
else
{
JOptionPane.showMessageDialog(null, "請在下方填寫修改后的項目信息");
}
}
}
//處理刪除
package 科研信息管理系統;
import javax.swing.JOptionPane;
public class DealDelete
{
public DealDelete()
{}
public void delete(int num)
{
ScienceProject s=new ScienceProject();
Sql sql=new Sql();
if(sql.Findbynum(num).GetNum()==0)
{
JOptionPane.showMessageDialog(null, "不存在該項目~");
}
else
{
s=sql.Findbynum(num);
sql.DelScienceProject(s);
JOptionPane.showMessageDialog(null, "刪除成功~");
}
}
}
//處理修改
package 科研信息管理系統;
import javax.swing.JOptionPane;
public class DealAlter
{
public DealAlter()
{}
public void alter(ScienceProject s)
{
Sql sql=new Sql();
sql.UpdScienceProject(s);
JOptionPane.showMessageDialog(null,"修改成功");
}
}
//處理查詢
package 科研信息管理系統;
public class DealSearch //處理查詢事件
{
public DealSearch()
{}
public String findProByNum(int num)//通過項目編號查詢
{
String result="";
ScienceProject s=new ScienceProject();
Sql sql=new Sql();
s=sql.Findbynum(num);
result=s.GetNum()+","+s.GetName()+","+s.GetPeople()+","+s.GetLeader()+","+s.GetTimeStart()+","+s.GetTimeFinish();
return result;
}
}
3.5 主函數調用登錄窗口
package 科研信息管理系統;
public class Test {
public static void main(String[] args)
{
LoginWindows v=new LoginWindows();
}
}
四、總結
還是有一些的缺陷存在的，由于對科研項目的不熟悉，有些屬性設計得不合理，還有很多沒有考慮到的地方，另外對GUI的不熟悉也限制了我們在窗口上的設計。還需要在項目屬性及窗口等方面進行修改。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。
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