【JAVA】科研信息管理系统

2017-01-13 08:18:52来源:CSDN作者:pointer_y人点击

一、前言
本学期学习了JAVA语言,在学期的结束,写一个有操作界面,与数据库关联的管理系统,用来巩固自己本学习所学的知识。
用到的知识:JAVA基础,JAVA界面设计(GUI),Oracle数据库(需要掌握数据库的基本操作语句),链接数据库。
使用的开发工具:MyEclipse Professional 2014
二、设计
我们管理的属性有:项目编号,项目名称,参与人员,负责人,项目开始时间,结束时间。科研项目系统主要有四个功能,对科研项目的增加、删除、修改、查询。以及为增加系统安全性所设计的登陆模式。
2.1 增加:向数据库的表中增加科研项目的所有信息

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添加后在控制台使用SQL语句查找,验证是否已添加至数据库中。
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2.2 查询:通过具有唯一性的项目编号查找该项目的所有信息

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2.3 修改:根据项目编号选中要修改的项目,并重新输入项目信息进行修改

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2.4 删除:通过具有唯一性的项目编号删除对应项目的所有信息
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三、窗体源码
3.1 登录界面

package 科研信息管理系统;import java.awt.*;import java.awt.event.*;import javax.swing.*;public  class LoginWindows extends Frame implements WindowListener,ActionListener {    public Label lgLabel;   //用户名标签    public Label pwdLabel;    //密码标签    public TextField lgText;   //用户名文本框    public TextField pwdText;    //密码文本框    public Button lgBt;          //登录按钮    public Button quitBt;      //退出按钮      public LoginWindows()      {          super();          this.setSize(400, 300);          this.setTitle("科研信息管理系统");          this.setLayout(null);          lgLabel=new Label();          lgLabel.setText("登录账号:");          lgLabel.setSize(60, 30);          lgLabel.setLocation(70,70);          pwdLabel=new Label();          pwdLabel.setText("密      码:");          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("登录");          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,"账号或密码为空");            }            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, "没有权限");                }            }}}    @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主窗体源码

package 科研信息管理系统;import javax.swing.*;import java.awt.*;import java.awt.event.*;import javax.swing.event.*;import javax.swing.tree.*;public class WindowsView implements TreeSelectionListener,ActionListener  //窗口类{    JFrame main;    JPanel leftPa;    JPanel upPa;    JPanel downPa;    ///查询用控件    JLabel numLa;  //通过项目编号查询    JTextField numTxt;    JButton numBt;    JTextField nameTxt;  //显示项目名称的文本框    JTextField peopleTxt;   //显示参与人员    JTextField principalTxt;  //显示主要负责人    JTextField timeStartTxt;  //显示开始时间的文本框    JTextField timeEndTxt;    //显示预期结束时间的文本框    //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;    //删除用控件    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={"查询","增加","删除","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("查询"))        {            initUpDownPaWhenSearch();        }        if(str.equals("增加"))        {            initUpDownPaWhenAdd();        }        if(str.equals("删除"))        {            initUpDownPaWhenDelete();        }        if(str.equals("修改"))        {            initUpDownPaWhenAlert();        }    }    private void initUpDownPaWhenSearch()    {        //清空上下面板上的控件        upPa.removeAll();        downPa.removeAll();        //动态的加载上面板的控件        upPa.setLayout(null);        numLa=new JLabel();        numLa.setText("请输入项目编号");        numLa.setLocation(40, 60);        numLa.setSize(100, 40);        numTxt=new JTextField();        numTxt.setLocation(180, 60);        numTxt.setSize(200, 30);        numBt=new JButton();        numBt.setText("查询");        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);        //动态的加载下面板的控件        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("查询"))        {            if(numTxt.getText().equals(""))            {                JOptionPane.showMessageDialog(null, "请输入项目编号");            }            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, "输入中不能有空值!!");            }            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("删除"))        {            if(Integer.parseInt(dnumTxt.getText())==0)            {                JOptionPane.showMessageDialog(null, "不能删除空的项目编号!!");            }            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, "不能修改空的项目编号!!");            }            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, "输入中不能有空值!!");            }            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();        //动态的加载上面板的控件        upPa.setLayout(null);        anumLa=new JLabel();        anumLa.setText("请输入要增加的项目编号");        anumLa.setLocation(30, 50);        anumLa.setSize(150, 40);        anumTxt=new JTextField();        anumTxt.setLocation(200, 50);        anumTxt.setSize(250, 30);        anameLa=new JLabel();        anameLa.setText("请输入要增加的项目名称");        anameLa.setLocation(30, 100);        anameLa.setSize(150, 40);        anameTxt=new JTextField();        anameTxt.setLocation(200, 100);        anameTxt.setSize(250, 30);        apeopleLa=new JLabel();        apeopleLa.setText("请输入项目参与人员");        apeopleLa.setLocation(30, 150);        apeopleLa.setSize(150, 40);        apeopleTxt=new JTextField();        apeopleTxt.setLocation(200, 150);        apeopleTxt.setSize(250, 30);        aprincipalLa=new JLabel();        aprincipalLa.setText("请输入项目负责人");        aprincipalLa.setLocation(30, 200);        aprincipalLa.setSize(150, 40);        aprincipalTxt=new JTextField();        aprincipalTxt.setLocation(200, 200);        aprincipalTxt.setSize(250, 30);        atimeStartLa=new JLabel();        atimeStartLa.setText("请输入项目开始时间");        atimeStartLa.setLocation(30, 250);        atimeStartLa.setSize(150, 40);        atimeStartTxt=new JTextField();        atimeStartTxt.setLocation(200, 250);        atimeStartTxt.setSize(250, 30);        atimeEndLa=new JLabel();        atimeEndLa.setText("请输入项目结束时间");        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();        //动态的加载上面板的控件        upPa.setLayout(null);        numLa=new JLabel();        numLa.setText("请输入要删除的项目编号");        numLa.setLocation(40, 60);        numLa.setSize(150, 40);        dnumTxt=new JTextField();        dnumTxt.setLocation(200, 60);        dnumTxt.setSize(250, 30);        dnumBt=new JButton();        dnumBt.setText("删除");        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();        //动态的加载上面板的控件        upPa.setLayout(null);        alnumLa=new JLabel();        alnumLa.setText("请输入要修改的项目编号");        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("请输入修改后的项目编号");        allnumLa.setLocation(30, 00);        allnumLa.setSize(150, 40);        alnumTxt=new JTextField();        alnumTxt.setLocation(180, 00);        alnumTxt.setSize(250, 30);*/        alnameLa=new JLabel();        alnameLa.setText("请输入修改后项目名称");        alnameLa.setLocation(30, 50);        alnameLa.setSize(150, 40);        alnameTxt=new JTextField();        alnameTxt.setLocation(180, 50);        alnameTxt.setSize(250, 30);        alpeopleLa=new JLabel();        alpeopleLa.setText("请重设参与人员");        alpeopleLa.setLocation(30, 100);        alpeopleLa.setSize(150, 40);        alpeopleTxt=new JTextField();        alpeopleTxt.setLocation(180, 100);        alpeopleTxt.setSize(250, 30);        alprincipalLa=new JLabel();        alprincipalLa.setText("请重设项目负责人");        alprincipalLa.setLocation(30, 150);        alprincipalLa.setSize(150, 40);        alprincipalTxt=new JTextField();        alprincipalTxt.setLocation(180, 150);        alprincipalTxt.setSize(250, 30);        altimeStartLa=new JLabel();        altimeStartLa.setText("请重设项目开始时间");        altimeStartLa.setLocation(30, 200);        altimeStartLa.setSize(150, 40);        altimeStartTxt=new JTextField();        altimeStartTxt.setLocation(180, 200);        altimeStartTxt.setSize(250, 30);        altimeEndLa=new JLabel();        altimeEndLa.setText("请重设项目结束时间");        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 组织SQL语句,链接数据库部分

package 科研信息管理系统;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("修改异常");      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 增删查改对应处理的源码

//处理增加package 科研信息管理系统;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, "该项目已存在,请重新输入!");        }        else        {            sql.AddScienceProject(s);            JOptionPane.showMessageDialog(null,"增加成功");        }    }}由设计部分可以看到,删除时需要先提交项目编号,所以,需要处理提交事件//处理提交package 科研信息管理系统;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, "不存在该项目");        }        else        {            JOptionPane.showMessageDialog(null, "请在下方填写修改后的项目信息");        }    }}//处理删除package 科研信息管理系统;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, "不存在该项目~");        }        else        {            s=sql.Findbynum(num);            sql.DelScienceProject(s);            JOptionPane.showMessageDialog(null, "删除成功~");        }    }}//处理修改package 科研信息管理系统;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");    }}//处理查询package 科研信息管理系统;public class DealSearch   //处理查询事件{    public DealSearch()       {}    public String findProByNum(int num)//通过项目编号查询    {        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 主函数调用登录窗口

package 科研信息管理系统;public class Test {    public static void main(String[] args)    {        LoginWindows v=new LoginWindows();    }}

四、总结

还是有一些的缺陷存在的,由于对科研项目的不熟悉,有些属性设计得不合理,还有很多没有考虑到的地方,另外对GUI的不熟悉也限制了我们在窗口上的设计。还需要在项目属性及窗口等方面进行修改。

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