?? dao.java
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package com.wsy.dao;
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import com.wsy.model.Back;
import com.wsy.model.BookInfo;
import com.wsy.model.BookType;
import com.wsy.model.Borrow;
import com.wsy.model.Operater;
import com.wsy.model.Order;
import com.wsy.model.OrderAndBookInfo;
import com.wsy.model.Reader;
import com.wsy.model.user;
public class Dao {
protected static String dbClassName = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
protected static String dbUrl = "jdbc:microsoft:sqlserver://localhost:1433;"
+ "DatabaseName=db_library;SelectMethod=Cursor";
protected static String dbUser = "sa";
protected static String dbPwd = "";
protected static String second = null;
private static Connection conn = null;
private Dao() {
try {
if (conn == null) {
Class.forName(dbClassName).newInstance();
conn = DriverManager.getConnection(dbUrl, dbUser, dbPwd);
}
else
return;
} catch (Exception ee) {
ee.printStackTrace();
}
}
private static ResultSet executeQuery(String sql) {
try {
if(conn==null)
new Dao();
return conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE).executeQuery(sql);
} catch (SQLException e) {
e.printStackTrace();
return null;
} finally {
}
}
private static int executeUpdate(String sql) {
try {
if(conn==null)
new Dao();
return conn.createStatement().executeUpdate(sql);
} catch (SQLException e) {
System.out.println(e.getMessage());
//if(e.getMessage().equals("[Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]DELETE 語句與 COLUMN REFERENCE 約束 'FK_TB_BORRO_REFERENCE_TB_BOOKI' 沖突。該沖突發生于數據庫 'db_library'，表 'tb_borrow', column 'bookISBN'。"))
return -1;
} finally {
}
}
public static void close() {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
conn = null;
}
}
/*
* 管理員登錄方法
*/
public static Operater check(String name, String password) {
int i = 0;
Operater operater=new Operater();
String sql = "select * from tb_operator where name='" + name
+ "' and password='" + password + "'and admin=1";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
String names = rs.getString(1);
operater.setId(rs.getString("id"));
operater.setName(rs.getString("name"));
operater.setGrade(rs.getString("admin"));
operater.setPassword(rs.getString("password"));
if (names != null) {
i = 1;
}
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return operater;
}
/*
* 查詢類別方法
*/
public static List selectBookCategory() {
List list=new ArrayList();
String sql = "select * from tb_bookType";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
BookType bookType=new BookType();
bookType.setId(rs.getString("id"));
bookType.setTypeName(rs.getString("typeName"));
bookType.setDays(rs.getString("days"));
bookType.setFk(rs.getString("fk"));
list.add(bookType);
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return list;
}
public static List selectBookCategory(String bookType) {
List list=new ArrayList();
String sql = "select days from tb_bookType where typeName='"+bookType+"'";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
BookType type=new BookType();
type.setDays(rs.getString("days"));
list.add(type);
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return list;
}
/*
* 圖書類別表相關操作
*
*/
public static int InsertBookType(String bookTypeName,String days,Double fk){
int i=0;
try{
String sql="insert into tb_bookType(typeName,days,fk) values('"+bookTypeName+"','"+days+"',"+fk+")";
i=Dao.executeUpdate(sql);
}catch(Exception e){
e.printStackTrace();
}
return i;
}
public static int UpdatebookType(String id,String typeName,String days,String fk){
int i=0;
try{
String sql="update tb_bookType set typeName='"+typeName+"',days='"+days+"',fk='"+fk+"' where id='"+id+"'";
//System.out.println(sql);
i=Dao.executeUpdate(sql);
}catch(Exception e){
e.printStackTrace();
}
Dao.close();
return i;
}
// public static int DelbookType(String id){
// int i=0;
// try{
// String sql="delete from tb_bookType where id='"+id+"'";
// //System.out.println(sql);
// i=Dao.executeUpdate(sql);
// }catch(Exception e){
// e.printStackTrace();
// }
// Dao.close();
// return i;
// }
public static List selectBookTypeFk(String bookType) {//取每種書超過規定時間罰款金額
List list=new ArrayList();
String sql = "select * from tb_bookType where typeName='"+bookType+"'";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
BookType type=new BookType();
type.setFk(rs.getString("fk"));
type.setDays(rs.getString("days"));
list.add(type);
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return list;
}
/*
* 圖書信息表相關操作
*/
/*
* 插入圖書信息方法
*/
public static int Insertbook(String ISBN,String typeId,String bookname,String writer,String translator,String publisher,Date date,Double price){
int i=0;
try{
String sql="insert into tb_bookInfo(ISBN,typeId,bookname,writer,translator,publisher,date,price) values('"+ISBN+"','"+typeId+"','"+bookname+"','"+writer+"','"+translator+"','"+publisher+"','"+date+"',"+price+")";
//System.out.println(sql);
i=Dao.executeUpdate(sql);
}catch(Exception e){
System.out.println(e.getMessage());
}
Dao.close();
return i;
}
/*
* 查詢圖書相關信息
*
*/
public static List selectBookInfo() {
List list=new ArrayList();
String sql = "select * from tb_bookInfo";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
BookInfo bookinfo=new BookInfo();
bookinfo.setISBN(rs.getString("ISBN"));
bookinfo.setTypeid(rs.getString("typeid"));
bookinfo.setBookname(rs.getString("bookname"));
bookinfo.setWriter(rs.getString("writer"));
bookinfo.setTranslator(rs.getString("translator"));
bookinfo.setPublisher(rs.getString("publisher"));
bookinfo.setDate(rs.getDate("date"));
bookinfo.setPrice(rs.getDouble("price"));
list.add(bookinfo);
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return list;
}
public static List selectBookInfo(String ISBN) {
List list=new ArrayList();
String sql = "select * from tb_bookInfo where ISBN='"+ISBN+"'";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
BookInfo bookinfo=new BookInfo();
bookinfo.setISBN(rs.getString("ISBN"));
bookinfo.setTypeid(rs.getString("typeid"));
bookinfo.setBookname(rs.getString("bookname"));
bookinfo.setWriter(rs.getString("writer"));
bookinfo.setTranslator(rs.getString("translator"));
bookinfo.setPublisher(rs.getString("publisher"));
bookinfo.setDate(rs.getDate("date"));
bookinfo.setPrice(rs.getDouble("price"));
list.add(bookinfo);
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return list;
}
/*
* 修改圖書信息方法
*/
public static int Updatebook(String ISBN,String typeId,String bookname,String writer,String translator,String publisher,Date date,Double price){
int i=0;
try{
String sql="update tb_bookInfo set ISBN='"+ISBN+"',typeId='"+typeId+"',bookname='"+bookname+"',writer='"+writer+"',translator='"+translator+"',publisher='"+publisher+"',date='"+date+"',price="+price+" where ISBN='"+ISBN+"'";
//System.out.println(sql);
i=Dao.executeUpdate(sql);
}catch(Exception e){
e.printStackTrace();
}
Dao.close();
return i;
}
// /*
// * 刪除圖書信息方法
// */
// public static int Delbook(String ISBN){
// int i=0;
// try{
// String sql="delete from tb_bookInfo where ISBN='"+ISBN+"'";
// //System.out.println(sql);
// i=Dao.executeUpdate(sql);
// }catch(Exception e){
// e.printStackTrace();
//
// }
// Dao.close();
// return i;
// }
/*
* 對讀者信息表執行的相關操作
*/
public static int InsertReader(String name,String sex,String age,String identityCard,Date date,String maxNum,String tel,Double keepMoney,String zj,String zy,Date bztime,String ISBN){
int i=0;
try{
String sql="insert into tb_reader(name,sex,age,identityCard,date,maxNum,tel,keepMoney,zj,zy,bztime,ISBN) values('"+name+"','"+sex+"','"+age+"','"+identityCard+"','"+date+"','"+maxNum+"','"+tel+"',"+keepMoney+",'"+zj+"','"+zy+"','"+bztime+"','"+ISBN+"')";
System.out.println(sql);
i=Dao.executeUpdate(sql);
}catch(Exception e){
e.printStackTrace();
}
Dao.close();
return i;
}
public static List selectReader() {
List list=new ArrayList();
String sql = "select * from tb_reader";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
Reader reader=new Reader();
//reader.setId(rs.getString("id"));
reader.setName(rs.getString("name"));
reader.setSex(rs.getString("sex"));
reader.setAge(rs.getString("age"));
reader.setIdentityCard(rs.getString("identityCard"));
reader.setDate(rs.getDate("date"));
reader.setMaxNum(rs.getString("maxNum"));
reader.setTel(rs.getString("tel"));
reader.setKeepMoney(rs.getDouble("keepMoney"));
reader.setZj(rs.getInt("zj"));
reader.setZy(rs.getString("zy"));
reader.setISBN(rs.getString("ISBN"));
reader.setBztime(rs.getDate("bztime"));
list.add(reader);
}
} catch (Exception e) {
e.printStackTrace();
}
Dao.close();
return list;
}
public static List selectReader(String readerISBN) {
List list=new ArrayList();
String sql = "select * from tb_reader where ISBN='"+readerISBN+"'";
ResultSet rs = Dao.executeQuery(sql);
try {
while (rs.next()) {
Reader reader=new Reader();
reader.setName(rs.getString("name"));
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