killclass.java~21~

此程序是用Java实现的一个图书管理系统,再加以可以做毕业设计用而,而且实现的工能相对效全.

package bookmanager;

import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;

public class killclass {
    public killclass() {
    }
    public int rtu(borrownote j,int tr3)
    {
        Statement t1;
        int u1=0,u2=0,u3=0;
        dbconnection rd=new dbconnection();
        try {
            t1 = rd.getconnection().createStatement();
            String sr="insert into borrownote(notid,redid,notdata,nottada) values('"+j.getnotid()+
                      "','"+j.getredid()+"','"+j.getnotdata()+"','"+j.getnottada()+"')";
            String rs="update bookinfo set onoutctrl='否' where bookid='"+j.getnotid()+"'";
            String rt="update borrowinfo set amount=amount+"+tr3+" where borrowid='"+j.getredid()+"'";
            System.out.println(rs);
            System.out.println(sr);
            System.out.println(rt);
            u1=t1.executeUpdate(sr);
            u2=t1.executeUpdate(rs);
            u3=t1.executeUpdate(rt);
        } catch (SQLException ex) {
        }
        return (u1+u2+u3);
    }
    public int readopen(readinfo r)
  {
      Statement s1;
      int up=0;
      dbconnection u=new dbconnection();
      try {
          s1 =u.getconnection().createStatement();
                  String str="insert into readinfo(readid,readname,readsex,readtelephone,readaddress,readdatetime) values('"+
                           r.getreadid()+"','"+r.getreadname()+"','"+r.getsex()+"','"+r.getreadtelephone()+"','"+
                           r.getreadaddress()+"',"+r.getreaddatetime()+")";
                 up=s1.executeUpdate(str);
      } catch (SQLException ex) {
      }
      return up;
  }
  public ArrayList checkbookinfo()
  {
      Statement s1;
      ResultSet s2;
      dbconnection u=new dbconnection();
      ArrayList list=new ArrayList();
    try {
        s1 = u.getconnection().createStatement();
        s2=s1.executeQuery("select bookid,bookname from bookinfo");
        while(s2.next())
        {
            bookinfo info=new bookinfo();
            info.setbookid(s2.getString(1));
            info.setbookname(s2.getString(2));
            list.add(info);
        }
    } catch (SQLException ex) {
    }
    return list;
  }
  public ArrayList checkreadinfo()
  {
      Statement s1;
      ResultSet s2;
      dbconnection u=new dbconnection();
      ArrayList list=new ArrayList();
    try {
        s1 = u.getconnection().createStatement();
        s2=s1.executeQuery("select readid,readname,readdatetime from readinfo");
        while(s2.next())
        {
            readinfo info=new readinfo();
            info.setreadid(s2.getString(1));
            info.setreadname(s2.getString(2));
            info.setreaddatetime(s2.getInt(3));
            list.add(info);
        }
    } catch (SQLException ex) {
    }
    return list;
  }
  public void insertmodel(borrowinfo b)
  {
      Statement s1;
      dbconnection u=new dbconnection();
    try {
        s1 = u.getconnection().createStatement();
        s1.executeUpdate("insert into borrowinfo(borrowid,borrowname,boamount,amount,moneyfee) values('"+
                b.getborrowid()+"','"+b.getborrowname()+"',"+b.getboamount()+","+b.getamount()+","+b.getmoneyfee()+")");
    } catch (SQLException ex) {
    }
  }
  public ArrayList addrt(String rt)
  {
      Statement s1;
      ResultSet t1;
      ArrayList li=new ArrayList();
      dbconnection u=new dbconnection();
    try {
        s1 = u.getconnection().createStatement();
        t1 = s1.executeQuery("select notdata,nottada from borrownote where redid='" +
                             rt + "'");
        while(t1.next())
        {
            borrownote note=new borrownote();
            note.setnotdata(t1.getString(1));
            note.setnottada(t1.getString(2));
            li.add(note);
        }
    } catch (SQLException ex) {
    }
    return li;
  }
  public int adder(browbook b,String num)
  {
      Statement s1;
      int r1=0,r2=0,r3=0;
       dbconnection u=new dbconnection();
        try {
            s1 = u.getconnection().createStatement();
            r1=s1.executeUpdate(
                    "insert into browbook(browid,rdid,nota,tada,dataot) values('" +
                    b.getbrowid() + "','" + b.getrdid() + "','" + b.getnota() +
                    "','" + b.gettada() + "','"+b.getdataot()+"')");
            r2=s1.executeUpdate("update borrowinfo set amount=amount-"+Integer.parseInt(num)
                             +" where borrowid='"+b.getrdid()+"'");
            r3=s1.executeUpdate("update bookinfo set onoutctrl='是' where bookid='"+b.getbrowid()+"'");
           String str1= b.gettada();
           String str2=b.getdataot();
           int f1=Integer.parseInt(str1.substring(0,4));
             int f2=Integer.parseInt(str1.substring(5,7));
             int f3=Integer.parseInt(str1.substring(8,10));
            int num1=Integer.parseInt(str2.substring(0,4));
            int num2=Integer.parseInt(str2.substring(5,7));
            int num3=Integer.parseInt(str2.substring(8,10));
            if((f1*365+f2*30+f3)>(num1*365+num2*30+num3))
            {
                s1.executeUpdate("update borrowinfo set moneyfee=moneyfee-10 where borrowid='"+b.getrdid()+"'");
            }
        } catch (SQLException ex) {
        }
        return (r1+r2+r3);
  }
}