JDBC

Main.java

package chap05app;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.apache.commons.codec.digest.DigestUtils;

public class Main {

	private static void loadJDBCDriver() {
		try {
			Class.forName("org.postgresql.Driver");
		} catch (ClassNotFoundException e) {
			throw new RuntimeException(e);
		}
	}

	private static Connection getConnection() {
		try {
			return( DriverManager.getConnection(
				"jdbc:postgresql://localhost:5432/BookStore", "okada",
				"okada") );
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}

	private static void closeConnection(Connection con) {
		try {
			con.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	private static String getStringDigest( String inString ){
		return( DigestUtils.md5Hex( inString + "digested" ) );
	}
	
	public static void main(String[] args) {
		loadJDBCDriver();

		Connection con = getConnection();
		try {
			PreparedStatement ps = con.prepareStatement(
					"insert into t_customer ( uid, passwordmd5, name, email ) " +
					"values( ?, ?, ?, ? )" );
			ps.setString( 1, "gonta" );
			ps.setString( 2, getStringDigest( "gontapass" ) );
			ps.setString( 3, "岡田　賢治" );
			ps.setString( 4, "gonta@bar.com" );
			
			ps.executeUpdate();
			ps.close();

		} catch (SQLException e) {
			e.printStackTrace();
			// エラー処理を行う。
		} finally {
			closeConnection(con);
		}
	}
}

代码来自日本的技术图书 ：http://www.shuwasystem.co.jp/products/7980html/2197.html