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jdbc crud的演示代码
2016/4/22
科迅教育
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下面是连接数据库的代码,sqlserver2000需要打上sp3的补丁,jdbc sp2的驱动 注意版本对应 

[table=95%][tr][td][font=FixedSys][color=#000000][color=#0000FF]package[/color] demo[color=#0000CC];[/color] 

[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]Connection[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]DriverManager[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]PreparedStatement[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]ResultSet[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]SQLException[/color][color=#0000CC];[/color] 

[color=#0000FF]public[/color] [color=#0000FF]class[/color] ConnectionManager [color=#0000CC]{[/color] 
    [color=#0000FF]private[/color] [color=#0000FF]static[/color] [color=#FF0000]String[/color] username [color=#0000CC]=[/color] [color=#FF00FF]"sa"[/color][color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#0000FF]static[/color] [color=#FF0000]String[/color] password [color=#0000CC]=[/color] [color=#FF00FF]"secret"[/color][color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#0000FF]static[/color] [color=#FF0000]String[/color] dUrl [color=#0000CC]=[/color] [color=#FF00FF]"jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=demo"[/color][color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#0000FF]static[/color] [color=#FF0000]String[/color] dDriver [color=#0000CC]=[/color] [color=#FF00FF]"com.microsoft.jdbc.sqlserver.SQLServerDriver"[/color][color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#0000FF]static[/color] [color=#FF0000]Connection[/color] conn [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 

    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#FF0000]Connection[/color] [color=#FF0000]getConnection[/color][color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]try[/color][color=#0000CC]{[/color] 
            [color=#0000FF]Class[/color][color=#0000CC].[/color][color=#FF0000]forName[/color][color=#0000CC]([/color]dDriver[color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color][color=#0000FF]catch[/color][color=#0000CC]([/color][color=#FF0000]ClassNotFoundException[/color] e[color=#0000CC])[/color][color=#0000CC]{[/color] 
            e[color=#0000CC].[/color][color=#FF0000]printStackTrace[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] 
        [color=#0000FF]try[/color][color=#0000CC]{[/color] 
            conn[color=#0000CC]=[/color][color=#FF0000]DriverManager[/color][color=#0000CC].[/color][color=#FF0000]getConnection[/color][color=#0000CC]([/color]dUrl[color=#0000CC],[/color]username[color=#0000CC],[/color]password[color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color][color=#0000FF]catch[/color][color=#0000CC]([/color][color=#FF0000]Exception[/color] e[color=#0000CC])[/color][color=#0000CC]{[/color] 
            e[color=#0000CC].[/color][color=#FF0000]printStackTrace[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] 
        [color=#0000FF]return[/color] conn[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 

    [color=#0000FF]public[/color] [color=#0000FF]void[/color] [color=#FF0000]rollback[/color][color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            conn[color=#0000CC].[/color][color=#FF0000]rollback[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
            e[color=#0000CC].[/color][color=#FF0000]printStackTrace[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] 
    [color=#0000CC]}[/color] 

    [color=#0000FF]public[/color] [color=#0000FF]void[/color] [color=#FF0000]commit[/color][color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            conn[color=#0000CC].[/color][color=#FF0000]commit[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
            e[color=#0000CC].[/color][color=#FF0000]printStackTrace[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] 
    [color=#0000CC]}[/color] 

    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#0000FF]void[/color] [color=#FF0000]close[/color][color=#0000CC]([/color][color=#FF0000]ResultSet[/color] rs[color=#0000CC],[/color] [color=#FF0000]PreparedStatement[/color] pstmt[color=#0000CC],[/color] 
            [color=#FF0000]Connection[/color] conn[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            [color=#0000FF]if[/color] [color=#0000CC]([/color]rs [color=#0000CC]![/color][color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
                rs[color=#0000CC].[/color][color=#FF0000]close[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            [color=#0000CC]}[/color] 
            [color=#0000FF]if[/color] [color=#0000CC]([/color]pstmt [color=#0000CC]![/color][color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
                pstmt[color=#0000CC].[/color][color=#FF0000]close[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            [color=#0000CC]}[/color] 
            [color=#0000FF]if[/color] [color=#0000CC]([/color]conn [color=#0000CC]![/color][color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
                conn[color=#0000CC].[/color][color=#FF0000]close[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            [color=#0000CC]}[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
            e[color=#0000CC].[/color][color=#FF0000]printStackTrace[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] 
    [color=#0000CC]}[/color] 
[color=#0000CC]}[/color] 
[/color][/font][/td][/tr][/table]

[ 本帖最后由 freelogin 于 2009-7-2 13:10 编辑 ]


 freelogin 回复于:2009-07-02 13:07:24

下面是实体类代码 

[table=95%][tr][td][font=FixedSys][color=#000000][color=#0000FF]package[/color] demo[color=#0000CC];[/color] 

[color=#0000FF]public[/color] [color=#0000FF]class[/color] Employee [color=#0000CC]{[/color] 
    [color=#0000FF]private[/color] [color=#0000FF]int[/color] e_id[color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#FF0000]String[/color] [color=#FF0000]name[/color][color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#FF0000]String[/color] password[color=#0000CC];[/color] 
    [color=#0000FF]private[/color] [color=#FF0000]String[/color] email[color=#0000CC];[/color] 
     
    [color=#0000FF]public[/color] [color=#0000FF]int[/color] getE_id[color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]return[/color] e_id[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#0000FF]void[/color] setE_id[color=#0000CC]([/color][color=#0000FF]int[/color] e_id[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]this[/color][color=#0000CC].[/color]e_id [color=#0000CC]=[/color] e_id[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#FF0000]String[/color] [color=#FF0000]getName[/color][color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]return[/color] [color=#FF0000]name[/color][color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#0000FF]void[/color] [color=#FF0000]setName[/color][color=#0000CC]([/color][color=#FF0000]String[/color] [color=#FF0000]name[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]this[/color][color=#0000CC].[/color][color=#FF0000]name[/color] [color=#0000CC]=[/color] [color=#FF0000]name[/color][color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#FF0000]String[/color] [color=#FF0000]getPassword[/color][color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]return[/color] password[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#0000FF]void[/color] [color=#FF0000]setPassword[/color][color=#0000CC]([/color][color=#FF0000]String[/color] password[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]this[/color][color=#0000CC].[/color]password [color=#0000CC]=[/color] password[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#FF0000]String[/color] getEmail[color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]return[/color] email[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
    [color=#0000FF]public[/color] [color=#0000FF]void[/color] setEmail[color=#0000CC]([/color][color=#FF0000]String[/color] email[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000FF]this[/color][color=#0000CC].[/color]email [color=#0000CC]=[/color] email[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 
[color=#0000CC]}[/color] 
[/color][/font][/td][/tr][/table] 

下面是数据库访问部分 

[table=95%][tr][td][font=FixedSys][color=#000000][color=#0000FF]package[/color] demo[color=#0000CC];[/color] 

[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]Connection[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]PreparedStatement[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]ResultSet[/color][color=#0000CC];[/color] 
[color=#0000FF]import[/color] [color=#FF0000]java[/color][color=#0000CC].[/color][color=#FF0000]sql[/color][color=#0000CC].[/color][color=#FF0000]SQLException[/color][color=#0000CC];[/color] 

[color=#0000FF]public[/color] [color=#0000FF]class[/color] EmployeeManager [color=#0000CC]{[/color] 

    [color=#0000FF]public[/color] Employee createEmployee[color=#0000CC]([/color]Employee emp[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#FF0000]Connection[/color] conn [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]PreparedStatement[/color] pstmt [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]String[/color] insertSql [color=#0000CC]=[/color] [color=#FF00FF]"insert into employee(name,password,email) values(?,?,?)"[/color][color=#0000CC];[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            conn [color=#0000CC]=[/color] ConnectionManager[color=#0000CC].[/color][color=#FF0000]getConnection[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt [color=#0000CC]=[/color] conn[color=#0000CC].[/color][color=#FF0000]prepareStatement[/color][color=#0000CC]([/color]insertSql[color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setString[/color][color=#0000CC]([/color]1[color=#0000CC],[/color] emp[color=#0000CC].[/color][color=#FF0000]getName[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setString[/color][color=#0000CC]([/color]2[color=#0000CC],[/color] emp[color=#0000CC].[/color][color=#FF0000]getPassword[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setString[/color][color=#0000CC]([/color]3[color=#0000CC],[/color] emp[color=#0000CC].[/color]getEmail[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]executeUpdate[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000CC]}[/color] 
        [color=#0000FF]return[/color] emp[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 

    [color=#0000FF]public[/color] Employee updateEmployee[color=#0000CC]([/color]Employee emp[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#FF0000]Connection[/color] conn [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]PreparedStatement[/color] pstmt [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]String[/color] insertSql [color=#0000CC]=[/color] [color=#FF00FF]"update  employee set name=? , password=? , email=? where e_id = ?"[/color][color=#0000CC];[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            conn [color=#0000CC]=[/color] ConnectionManager[color=#0000CC].[/color][color=#FF0000]getConnection[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt [color=#0000CC]=[/color] conn[color=#0000CC].[/color][color=#FF0000]prepareStatement[/color][color=#0000CC]([/color]insertSql[color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setString[/color][color=#0000CC]([/color]1[color=#0000CC],[/color] emp[color=#0000CC].[/color][color=#FF0000]getName[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setString[/color][color=#0000CC]([/color]2[color=#0000CC],[/color] emp[color=#0000CC].[/color][color=#FF0000]getPassword[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setString[/color][color=#0000CC]([/color]3[color=#0000CC],[/color] emp[color=#0000CC].[/color]getEmail[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setInt[/color][color=#0000CC]([/color]4[color=#0000CC],[/color] emp[color=#0000CC].[/color]getE_id[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]executeUpdate[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000CC]}[/color] 
        [color=#0000FF]return[/color] emp[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 

    [color=#0000FF]public[/color] Employee getEmployee[color=#0000CC]([/color][color=#0000FF]int[/color] [color=#FF0000]id[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#FF0000]Connection[/color] conn [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]PreparedStatement[/color] pstmt [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        Employee emp [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]ResultSet[/color] rs [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]String[/color] insertSql [color=#0000CC]=[/color] [color=#FF00FF]"select * from employee where e_id = ?"[/color][color=#0000CC];[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            conn [color=#0000CC]=[/color] ConnectionManager[color=#0000CC].[/color][color=#FF0000]getConnection[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt [color=#0000CC]=[/color] conn[color=#0000CC].[/color][color=#FF0000]prepareStatement[/color][color=#0000CC]([/color]insertSql[color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setInt[/color][color=#0000CC]([/color]1[color=#0000CC],[/color] [color=#FF0000]id[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            rs [color=#0000CC]=[/color] pstmt[color=#0000CC].[/color][color=#FF0000]executeQuery[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            [color=#0000FF]while[/color] [color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]next[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
                emp [color=#0000CC]=[/color] [color=#0000FF]new[/color] Employee[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
                emp[color=#0000CC].[/color]setE_id[color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getInt[/color][color=#0000CC]([/color][color=#FF00FF]"e_id"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
                emp[color=#0000CC].[/color][color=#FF0000]setName[/color][color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getString[/color][color=#0000CC]([/color][color=#FF00FF]"name"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
                emp[color=#0000CC].[/color][color=#FF0000]setPassword[/color][color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getString[/color][color=#0000CC]([/color][color=#FF00FF]"password"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
                emp[color=#0000CC].[/color]setEmail[color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getString[/color][color=#0000CC]([/color][color=#FF00FF]"email"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            [color=#0000CC]}[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000CC]}[/color] 
        [color=#0000FF]return[/color] emp[color=#0000CC];[/color] 
    [color=#0000CC]}[/color] 

    [color=#0000FF]public[/color] [color=#0000FF]void[/color] removeEmployee[color=#0000CC]([/color][color=#0000FF]int[/color] [color=#FF0000]id[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#FF0000]Connection[/color] conn [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]PreparedStatement[/color] pstmt [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
        [color=#FF0000]String[/color] insertSql [color=#0000CC]=[/color] [color=#FF00FF]"delete from employee where e_id = ?"[/color][color=#0000CC];[/color] 
        [color=#0000FF]try[/color] [color=#0000CC]{[/color] 
            conn [color=#0000CC]=[/color] ConnectionManager[color=#0000CC].[/color][color=#FF0000]getConnection[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt [color=#0000CC]=[/color] conn[color=#0000CC].[/color][color=#FF0000]prepareStatement[/color][color=#0000CC]([/color]insertSql[color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]setInt[/color][color=#0000CC]([/color]1[color=#0000CC],[/color] [color=#FF0000]id[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
            pstmt[color=#0000CC].[/color][color=#FF0000]executeUpdate[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
        [color=#0000CC]}[/color] 
    [color=#0000CC]}[/color] 

[color=#0000CC]}[/color][/color][/font][/td][/tr][/table]

 freelogin 回复于:2009-07-02 13:09:25

这是测试下 可以运行 

[table=95%][tr][td][font=FixedSys][color=#000000][color=#0000FF]package[/color] demo[color=#0000CC];[/color] 

[color=#0000FF]public[/color] [color=#0000FF]class[/color] EmployeeTest [color=#0000CC]{[/color] 
    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#0000FF]void[/color] [color=#FF0000]add[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC]{[/color] 
        Employee emp [color=#0000CC]=[/color] [color=#0000FF]new[/color] Employee[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        EmployeeManager em [color=#0000CC]=[/color] [color=#0000FF]new[/color] EmployeeManager[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color][color=#FF0000]setName[/color][color=#0000CC]([/color][color=#FF00FF]"jack"[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color][color=#FF0000]setPassword[/color][color=#0000CC]([/color][color=#FF00FF]"secret"[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color]setEmail[color=#0000CC]([/color][color=#FF00FF]"god@gmail.com"[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        em[color=#0000CC].[/color]createEmployee[color=#0000CC]([/color]emp[color=#0000CC])[/color][color=#0000CC];[/color]         
    [color=#0000CC]}[/color] 
     
    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#0000FF]void[/color] [color=#FF0000]update[/color][color=#0000CC]([/color][color=#0000FF]int[/color] [color=#FF0000]id[/color][color=#0000CC])[/color][color=#0000CC]{[/color] 
        Employee emp [color=#0000CC]=[/color] [color=#0000FF]new[/color] Employee[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        EmployeeManager em [color=#0000CC]=[/color] [color=#0000FF]new[/color] EmployeeManager[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color][color=#FF0000]setName[/color][color=#0000CC]([/color][color=#FF00FF]"tom"[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color][color=#FF0000]setPassword[/color][color=#0000CC]([/color][color=#FF00FF]"helem"[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color]setEmail[color=#0000CC]([/color][color=#FF00FF]"jack@sina.com"[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC].[/color]setE_id[color=#0000CC]([/color][color=#FF0000]id[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        em[color=#0000CC].[/color]updateEmployee[color=#0000CC]([/color]emp[color=#0000CC])[/color][color=#0000CC];[/color]
    [color=#0000CC]}[/color] 
     
    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#0000FF]void[/color] printEmployee [color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC]{[/color] 
        Employee emp [color=#0000CC]=[/color] [color=#0000FF]new[/color] Employee[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        EmployeeManager em [color=#0000CC]=[/color] [color=#0000FF]new[/color] EmployeeManager[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        emp[color=#0000CC]=[/color]em[color=#0000CC].[/color]getEmployee[color=#0000CC]([/color]2[color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color]getE_id[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color][color=#FF0000]getName[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color][color=#FF0000]getPassword[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color]getEmail[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color]         
    [color=#0000CC]}[/color] 
     
    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#0000FF]void[/color] del[color=#0000CC]([/color][color=#0000FF]int[/color] [color=#FF0000]id[/color][color=#0000CC])[/color][color=#0000CC]{[/color]         
        EmployeeManager em [color=#0000CC]=[/color] [color=#0000FF]new[/color] EmployeeManager[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
        em[color=#0000CC].[/color]removeEmployee[color=#0000CC]([/color][color=#FF0000]id[/color][color=#0000CC])[/color][color=#0000CC];[/color]         
    [color=#0000CC]}[/color] 
     
    [color=#0000FF]public[/color] [color=#0000FF]static[/color] [color=#0000FF]void[/color] main[color=#0000CC]([/color][color=#FF0000]String[/color][color=#0000CC][[/color][color=#0000CC]][/color] args[color=#0000CC])[/color][color=#0000CC]{[/color] 
        [color=#FF9900]//add(); 
[/color] 
        [color=#FF9900]//update(2); 
[/color] 
        [color=#FF9900]//printEmployee(); 
[/color] 
        [color=#FF9900]//del(1); 
[/color] 
        [color=#FF9900]//System.out.println("---"); 
[/color] 
    [color=#0000CC]}[/color] 
[color=#0000CC]}[/color] 
[/color][/font][/td][/tr][/table]

 freelogin 回复于:2009-07-02 17:16:21

加上SQL 语句吧 
[table=95%][tr][td][font=FixedSys][color=#000000][color=#0000FF]create[/color] [color=#0000FF]database[/color] demo[color=#0000CC];[/color] 
use demo 
[color=#0000FF]create[/color] [color=#0000FF]table[/color] employee[color=#0000CC]([/color]e_id identity [color=#0000FF]primary[/color] [color=#0000FF]key[/color][color=#0000CC],[/color]name [color=#0000FF]varchar[/color][color=#0000CC]([/color]30[color=#0000CC])[/color][color=#0000CC],[/color][color=#FF0000]password[/color] [color=#0000FF]varchar[/color][color=#0000CC]([/color]20[color=#0000CC])[/color][color=#0000CC],[/color]email [color=#0000FF]varchar[/color][color=#0000CC]([/color]20[color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color][/color][/font][/td][/tr][/table]

 freelogin 回复于:2009-07-02 17:19:06

刚刚少了获得全部员工信息的方法 
如下 

[table=95%][tr][td][font=FixedSys][color=#000000][color=#0000FF]public[/color] [color=#FF0000]List[/color][color=#0000CC]<[/color]Employee[color=#0000CC]>[/color] getAllEmployees[color=#0000CC]([/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#FF0000]Connection[/color] conn [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#FF0000]PreparedStatement[/color] pstmt [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Employee emp [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#FF0000]ResultSet[/color] rs [color=#0000CC]=[/color] [color=#0000FF]null[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#FF0000]List[/color][color=#0000CC]<[/color]Employee[color=#0000CC]>[/color] [color=#FF0000]list[/color] [color=#0000CC]=[/color] [color=#0000FF]new[/color] [color=#FF0000]ArrayList[/color][color=#0000CC]<[/color]Employee[color=#0000CC]>[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#FF0000]String[/color] querySql [color=#0000CC]=[/color] [color=#FF00FF]"select * from employee"[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000FF]try[/color] [color=#0000CC]{[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;conn [color=#0000CC]=[/color] ConnectionManager[color=#0000CC].[/color][color=#FF0000]getConnection[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pstmt [color=#0000CC]=[/color] conn[color=#0000CC].[/color][color=#FF0000]prepareStatement[/color][color=#0000CC]([/color]querySql[color=#0000CC])[/color][color=#0000CC];[/color]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rs [color=#0000CC]=[/color] pstmt[color=#0000CC].[/color][color=#FF0000]executeQuery[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000FF]while[/color] [color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]next[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color] [color=#0000CC]{[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;emp [color=#0000CC]=[/color] [color=#0000FF]new[/color] Employee[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;emp[color=#0000CC].[/color]setE_id[color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getInt[/color][color=#0000CC]([/color][color=#FF00FF]"e_id"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;emp[color=#0000CC].[/color][color=#FF0000]setName[/color][color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getString[/color][color=#0000CC]([/color][color=#FF00FF]"name"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;emp[color=#0000CC].[/color][color=#FF0000]setPassword[/color][color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getString[/color][color=#0000CC]([/color][color=#FF00FF]"password"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;emp[color=#0000CC].[/color]setEmail[color=#0000CC]([/color]rs[color=#0000CC].[/color][color=#FF0000]getString[/color][color=#0000CC]([/color][color=#FF00FF]"email"[/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#FF0000]list[/color][color=#0000CC].[/color][color=#FF0000]add[/color][color=#0000CC]([/color]emp[color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000CC]}[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000CC]}[/color] [color=#0000FF]catch[/color] [color=#0000CC]([/color][color=#FF0000]SQLException[/color] e[color=#0000CC])[/color] [color=#0000CC]{[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000CC]}[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000FF]return[/color] [color=#FF0000]list[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000CC]}[/color] 
[/color][/font][/td][/tr][/table] 


下面是测试方法 

  [table=95%][tr][td][font=FixedSys][color=#000000] [color=#FF0000]List[/color][color=#0000CC]<[/color]Employee[color=#0000CC]>[/color] [color=#FF0000]list[/color] [color=#0000CC]=[/color]em[color=#0000CC].[/color]getAllEmployees[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000FF]for[/color][color=#0000CC]([/color][color=#0000FF]int[/color] i[color=#0000CC]=[/color]0[color=#0000CC];[/color]i[color=#0000CC]<[/color][color=#FF0000]list[/color][color=#0000CC].[/color][color=#FF0000]size[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC];[/color]i[color=#0000CC]+[/color][color=#0000CC]+[/color][color=#0000CC])[/color][color=#0000CC]{[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  emp[color=#0000CC]=[/color][color=#0000CC]([/color]Employee[color=#0000CC])[/color][color=#FF0000]list[/color][color=#0000CC].[/color][color=#FF0000]get[/color][color=#0000CC]([/color]i[color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color]getE_id[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color][color=#FF0000]getName[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color][color=#FF0000]getPassword[/color][color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  [color=#FF0000]System[/color][color=#0000CC].[/color]out[color=#0000CC].[/color][color=#FF0000]println[/color][color=#0000CC]([/color]emp[color=#0000CC].[/color]getEmail[color=#0000CC]([/color][color=#0000CC])[/color][color=#0000CC])[/color][color=#0000CC];[/color] 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[color=#0000CC]}[/color] 
[/color][/font][/td][/tr][/table]
77
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