欧美bbbwbbbw肥妇,免费乱码人妻系列日韩,一级黄片

利用java和sqlserver建立簡(jiǎn)易圖書(shū)管理系統(tǒng)的完整步驟

 更新時(shí)間：2022年06月13日 11:02:31   作者：0°ic  
圖書(shū)館管理系統(tǒng)是圖書(shū)館管理工作中不可缺少的部分,它對(duì)于圖書(shū)館的管理者和使用者都非常重要,下面這篇文章主要給大家介紹了關(guān)于利用java和sqlserver建立簡(jiǎn)易圖書(shū)管理系統(tǒng)的完整步驟,需要的朋友可以參考下

1.所需功能：

游覽所有圖書(shū)、查找書(shū)籍、建立新圖書(shū)，借出和歸還圖書(shū)，刪除某一圖書(shū)

2.流程：

數(shù)據(jù)庫(kù)連接

  • 選擇需要的操作
  • 釋放連接

3.環(huán)境及其語(yǔ)言：

Idea，JDK13，驅(qū)動(dòng)包Microsoft JDBC Driver 8.2.2 for SQL Server

4.數(shù)據(jù)庫(kù)建立

  • 數(shù)據(jù)庫(kù)：sqlserver2019
  • Database：library
  • Table：Book
  • Book：書(shū)籍編號(hào)，書(shū)籍名稱，書(shū)籍作者，庫(kù)存量
  • 管理員名：sa
  • 密碼：123456

5.操作：

數(shù)據(jù)庫(kù)連接：sql.T3.Test1.java

官網(wǎng)下載驅(qū)動(dòng)包Microsoft JDBC Driver 8.2.2 for SQL Server并加載到程序中。

//注冊(cè)驅(qū)動(dòng)
	DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
//建立連接
String dbUL="jdbc:sqlserver://localhost:1433;DatabaseName=Library";
String Name="sa";
String Paw="123456";
conn=DriverManager.getConnection(dbUL,Name,Paw);

選擇需要的操作：sql.T3.Test1.java

1.游覽所有圖書(shū)

try{
    DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
    conn = DriverManager.getConnection(dbUL, Name, Paw);
    st = conn.createStatement();
    sql = "select * from Book";
    rs = st.executeQuery(sql);
    while (rs.next()){
        int id = rs.getInt("id");
        String name = rs.getString("name");
        String aut = rs.getString("aut");
        int num = rs.getInt("num");
        System.out.println("id=" + id + " name=" + name + " aut:" + aut + " num:" + num);
    }
}catch (SQLException e){
    e.printStackTrace();
}finally{
    JDBCUtil.release(conn, st, rs);
}

2.查找書(shū)籍

try{
    DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
    conn = DriverManager.getConnection(dbUL, Name, Paw);
    st = conn.createStatement();
    System.out.println("查找方式:1.按編號(hào)查找;2.按書(shū)名查找;3.按作者查找;4.放棄操作;");
    b_h2 = sc.nextInt();
    f_l = true;
    switch (b_h2){
    case 1:
        System.out.println("輸入書(shū)籍編號(hào):");
        book_num = sc.nextInt();
        sql1 = "select * from Book where id=" + book_num;
        break;
    case 2:
        System.out.println("輸入書(shū)籍名稱:");
        book_name = sc.next();
        sql1 = "select * from Book where name='" + book_name + "'";
        break;
    case 3:
        System.out.println("輸入書(shū)籍作者:");
        author = sc.next();
        sql1 = "select * from Book where id='" + author + "'";
        break;
    case 4:
        f_l = false;
        break;
    }
    if (f_l){
        sql = sql1;
        rs = st.executeQuery(sql);
        while (rs.next()){
            int id = rs.getInt("id");
            String name = rs.getString("name");
            String aut = rs.getString("aut");
            int num = rs.getInt("num");
            System.out.println("id=" + id + " name=" + name + " aut:" + aut + " num:" + num);
        }
    }
    else
        System.out.println("對(duì)象已放棄操作");
}catch (SQLException e){
    e.printStackTrace();
}finally{
    JDBCUtil.release(conn, st, rs);
}

3.建立新圖書(shū)

try{
    DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
    conn = DriverManager.getConnection(dbUL, Name, Paw);
    st = conn.createStatement();
    System.out.println("書(shū)籍導(dǎo)入：請(qǐng)依次輸入書(shū)籍的編號(hào)、書(shū)名、作者和導(dǎo)入數(shù)量:");
    book_id = sc.nextInt();
    book_name = sc.next();
    author = sc.next();
    book_num = sc.nextInt();
    sql1 = "insert into Book values(" + book_id + ",'" + book_name + "','" + author + "'," + book_num + ")";
    st.executeUpdate(sql1);
}catch (SQLException e){
    e.printStackTrace();
}finally{
    JDBCUtil.release(conn, st);
}

4借出圖書(shū)

try{
    DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
    conn = DriverManager.getConnection(dbUL, Name, Paw);
    st = conn.createStatement();
    System.out.println("查找方式:1.按編號(hào)查找;2.按書(shū)名查找;3.按作者查找;4.放棄操作;");
    b_h2 = sc.nextInt();
    f_l = true;
    switch (b_h2){
    case 1:
        System.out.println("輸入書(shū)籍編號(hào):");
        book_num = sc.nextInt();
        sql1 = "select * from Book where id=" + book_num;
        break;
    case 2:
        System.out.println("輸入書(shū)籍名稱:");
        book_name = sc.next();
        sql1 = "select * from Book where name='" + book_name + "'";
        break;
    case 3:
        System.out.println("輸入書(shū)籍作者:");
        author = sc.next();
        sql1 = "select * from Book where id='" + author + "'";
        break;
    case 4:
        f_l = false;
        break;
    }
    if (f_l){
        sql = sql1;
        rs = st.executeQuery(sql);
        while (rs.next()){
            int id = rs.getInt("id");
            String name = rs.getString("name");
            String aut = rs.getString("aut");
            int num = rs.getInt("num");
            System.out.println("id=" + id + " name=" + name + " aut:" + aut + " num:" + num);
            b_h = num;
            book_id = id;
        }
        System.out.println("確認(rèn)借出:確認(rèn):1,取消:2");
        b_h2 = sc.nextInt();
        if (b_h2 == 1){
            if (b_h == 0)
                System.out.println("館藏書(shū)目為0，無(wú)法借出");
            else{
                b_h--;
                sql1 = "UPDATE Book SET num=" + b_h + "WHERE id =" + book_id;
                st.executeUpdate(sql1);
            }
        }
        else
            System.out.println("你已取消操作");
    }
    else
        System.out.println("對(duì)象已放棄操作");
}catch (SQLException e)
{
    e.printStackTrace();
}finally{
    JDBCUtil.release(conn, st, rs);
}

5. 歸還圖書(shū)刪除某一圖書(shū)

try{
    DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
    conn = DriverManager.getConnection(dbUL, Name, Paw);
    st = conn.createStatement();
    System.out.println("輸入歸還書(shū)id:");
    book_id = sc.nextInt();
    sql = "select * from Book where id=" + book_id;
    rs = st.executeQuery(sql);
    while (rs.next()){
        int id = rs.getInt("id");
        String name = rs.getString("name");
        String aut = rs.getString("aut");
        int num = rs.getInt("num");
        System.out.println("id=" + id + " name=" + name + " aut:" + aut + " num:" + num);
        b_h = num;
    }
    b_h++;
    sql1 = "UPDATE Book SET num=" + b_h + "WHERE id =" + book_id;
    st.executeUpdate(sql1);
}catch (SQLException e){
    e.printStackTrace();
}finally{
    JDBCUtil.release(conn, st, rs);
}

6.刪除某一圖書(shū)

try{
    DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
    conn = DriverManager.getConnection(dbUL, Name, Paw);
    st = conn.createStatement();
    System.out.println("輸入刪除書(shū)id:");
    book_id = sc.nextInt();
    sql1 = "delete from Book where id=" + book_id;
    st.executeUpdate(sql1);
}catch (SQLException e){
    e.printStackTrace();
}finally{
    JDBCUtil.release(conn, st, rs);
}

釋放連接: sql.T1.JDBCUtil.java

public static void release(Connection conn, Statement st, ResultSet rs)//當(dāng)rs不為空時(shí)
{
    closeRs(rs);
    closeSt(st);
    closeConn(conn);
}

public static void release(Connection conn, Statement st)// 當(dāng)rs為空時(shí)
{
    closeSt(st);
    closeConn(conn);
}

6.運(yùn)行結(jié)果演示

sqlserver中的部分?jǐn)?shù)據(jù)：

idea中的演示結(jié)果：

顯示書(shū)籍：

查找書(shū)籍及借出：

歸還書(shū)籍及刪除書(shū)籍：

總結(jié)

到此這篇關(guān)于利用java和sqlserver建立簡(jiǎn)易圖書(shū)管理系統(tǒng)的文章就介紹到這了,更多相關(guān)java和sqlserver圖書(shū)管理系統(tǒng)內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

相關(guān)文章

最新評(píng)論