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JDBC • Ada 7 lanhkah untuk mengakses database: 1. Load the JDBC Driver 2. Define the connection URL 3. Establish the connection 4. Create a statement object 5. Execute a query or update 6. Process the result 7. Close the connection JDBC try { // Class.forName("org.gjt.mm.mysql.Driver"); // Step 1 Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); // step1 } catch (Exception E) { E.printStackTrace(); } // end catch JDBC try { con = DriverManager.getConnection("jdbc:odbc:Datab ase1");//,"root",""); // step 2 and 3 JDBC stmt = con.createStatement(); // step 4 rs = stmt.executeQuery("SQL Query'"); // step 5 while (rs.next()) { // step 6 : : } // while JDBC stmt.close(); // step7 con.close(); Access Database • Microsoft Acess Database : db1 Setting Access Database • Menset Database yang dipakai sebagai acuan dalam Program • Start -> Control Panel -> ODBC Data Source Setting Access Database • Tampil jendela ODBC Data Source Administrator • Click System DSN-> Add-> pilih Driver (Microsoft Access Driver) -> Finish. Dalam hal ini kita memakai Access Database. • Tentukan Letak File Database yang digunakan Setting Access Database • Click OK • Data base db1 siap diakses oleh Program JDBC Program package jdbc01; import java.sql.*; public class JDBCTest01 { public static void main(String[] args) { Connection conn = null; Statement stmt = null; ResultSet rs = null; try { Class.forName("sun.jdbc.odbc.JdbcOd bcDriver"); // step1 } catch (ClassNotFoundException cnfe) { System.err.println(cnfe); } catch (Exception E) { E.printStackTrace(); } // end catch try { conn = DriverManager.getConnection("jdbc:odbc:db1"); // step 2 and 3 stmt = conn.createStatement(); // step 4 rs = stmt.executeQuery("SELECT * FROM tabel02"); while (rs.next()) { // step 6 System.out.print(rs.getString("Nomer") + " "); System.out.print(rs.getString("Judul") + " "); System.out.print(rs.getString("Pengarang") + " "); System.out.print(rs.getString("Penerbit") + " "); System.out.print(rs.getString("harga") + " "); System.out.println("Oke"); } // while stmt.close(); conn.close(); } catch(SQLException sqle) { System.err.println("SQLException : " + sqle.getMessage()); } // end cacth } } JDBC Program • Hasil Program 1 Java 2 Complete Reference Patrick Naughton McGraw Hill 600000 Oke 2 Distributed Systems Tanenbaum Prentice Hall 500000 Oke 3 Home Networking Bible Plumley IDG Books 375000 Oke • Bandingkan JDBC Program dengan Access • Setting perlu dilakukan pada Control Panel, untuk menset Database yang dipakai • Pada Java Program tidak diperlukan setting apapun • Sun telah menyediakan driver secara otomatis untuk Access • Hal ini tidak berlaku untuk Sistem Database yang lain, misal: mysql, oracle, dll. Mysql Database • Mysql dapat didownload di : www.mysql.com/downloads • Extract and Just install it: Setup.exe • Mysql terletak di C:\mysql • Aktifkan mysql admin dengan double click di : C:\mysql\bin\winmysqladmin Mysql Database • Inilah tampilannya • Atau tampak di pojok kanan bawah Mysql Database • Mysql database : test002 • Tabel : tabel02 Java to mysql • JDBC Driver for MySQL dapat di-download di : www.mysql.com/downloads dengan nama : MySQL Connector/J 2.0.14 • Extract ke C:\ • JDBC Driver akan terletak di subdirectory C:\mysql-connector-java-2.0.14 Java to mysql • Dengan JBUILDER, buat program (class) Java misalnya : JDBCTest01.java • Project -> Project Properties -> Path -> Required Libraries -> Add... -> New, tuliskan nama library-nya, misal mysql-connectorjava, click Add... Java to mysql • Pilih subdirectory C:\mysql-connector-java-..., di mana JDBC driver untuk mysql diletakkan, click OK Java to mysql • Library yang baru akan tampak seperti pada gambar, click OK JDBC Program package jdbc01; import java.sql.*; public class JDBCTest01 { public static void main(String[] args) { Connection conn = null; Statement stmt = null; ResultSet rs = null; try { Class.forName("org.gjt.mm.mysql.Driver") ; // Step 1 } catch (ClassNotFoundException cnfe) { System.err.println(cnfe); } catch (Exception E) { E.printStackTrace(); } // end catch try { conn = DriverManager.getConnection("jdbc:mysql://localhost: 3306/test002","rsn","risanuri"); stmt = conn.createStatement(); // step 4 rs = stmt.executeQuery("SELECT * FROM tabel02"); while (rs.next()) { // step 6 System.out.print(rs.getString("Nomer") + " "); System.out.print(rs.getString("Judul") + " "); System.out.print(rs.getString("Pengarang") + " "); System.out.print(rs.getString("Penerbit") + " "); System.out.print(rs.getString("harga") + " "); System.out.println("Oke"); } // while stmt.close(); conn.close(); } catch(SQLException sqle) { System.err.println("SQLException : " + sqle.getMessage()); } // end cacth } } Hasil JDBC mysql 1 Core Servlets and JSP Marty Hall Prentice Hall 350000 Oke 2 Java 2 Complete Reference Patrick Naughton McGraw Hill 600000 Oke 3 J2EE Unleashed Bambara Allen Sams 600000 Oke • Bandingkan JDBC Program dengan mysql • Setting tidak perlu dilakukan pada Control Panel • Perlu dilakukan setting pada Java Program • Driver JDBC disediakan oleh mysql dan harus di-download secara terpisah • Mysql memungkinkan memanggil Database lewat jaringan Tambahan con = DriverManager.getConnection("jdbc:mysql://localhost:3306/pasiendreritta","r oot",""); stmt = con.createStatement(); stmt.executeUpdate("INSERT INTO catatanpasien VALUES('"+ navn[0] +"','"+ navn[1] +"','"+ navn[2] +"','"+ navn[3] +"','"+ navn[4] +"','"+ navn[5] +"');"); Mysql tools • Dbtools • Mysql-front Java to mysql • Setting Classpath, prosesnya sama dengan setting classpath yang lain – Pada Win98, Start ->Run (sysedit), kemudian pada autoexec.bat tambahkan C:\mysqlconnector-java-2.0.14, yang merupakan letak subdir JDBC Driver Java to mysql Java to mysql • Compile – myjava>javac JDBCTest01.java • Buat subdir jdbc01 di dalam :\myjava • Letakkan JDBCTest01.class pada subdir :\myjava\jdbc01 • Eksekusi – \myjava>java jdbc01.JDBCTest01 1 Routing TCP/IP Jeff Doyle null 900000 Oke 2 Top Down Network Design Oppenheimer 0 600000 Oke 3 Java Security Jess Gams 0 500000 Oke