一般java都是透過jdbc來連接資料庫,為了連接SQLite,就必須要有SQLite JDBC Driver,但SQLite官方並沒有提供這方面的Driver。
這次採用的是xerial:SQLiteJDBC Driver (第一次使用,會挑上它,是因為感覺還有在維護和更新),請選擇最新版本下載,在 Windows, MAC & Linux 都適用。網站上還提供了說明和 Sample code 方便修改測試。
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Sample
{
public static void main(String[] args) throws ClassNotFoundException
{
// load the sqlite-JDBC driver using the current class loader
// 載入與註冊JDBC驅動程式:
// 透過Class類別的forName()來載入,透過DriverManager註冊JDBC驅動程式(驅動程式會自動透過DriverManager.registerDriver()方法註冊)
Class.forName("org.sqlite.JDBC");
Connection connection = null;
try
{
// create a database connection
// 設定JDBC URL(即定義連接資料庫的協定:子協定:資料來源識別)並從DriverManager取得Connection
connection = DriverManager.getConnection("jdbc:sqlite:D:/Study/SQLiteJDBC/sample.db");
Statement statement = connection.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
statement.executeUpdate("drop table if exists person");
statement.executeUpdate("create table person (id integer, name string)");
statement.executeUpdate("insert into person values(1, 'leo')");
statement.executeUpdate("insert into person values(2, 'yui')");
ResultSet rs = statement.executeQuery("select * from person");
while(rs.next())
{
// read the result set
System.out.println("name = " + rs.getString("name"));
System.out.println("id = " + rs.getInt("id"));
}
}
catch(SQLException e)
{
// if the error message is "out of memory",
// it probably means no database file is found
System.err.println(e.getMessage());
}
finally
{
try
{
if(connection != null)
connection.close();
}
catch(SQLException e)
{
// connection close failed.
System.err.println(e);
}
}
}
}
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Sample
{
public static void main(String[] args) throws ClassNotFoundException
{
// load the sqlite-JDBC driver using the current class loader
// 載入與註冊JDBC驅動程式:
// 透過Class類別的forName()來載入,透過DriverManager註冊JDBC驅動程式(驅動程式會自動透過DriverManager.registerDriver()方法註冊)
Class.forName("org.sqlite.JDBC");
Connection connection = null;
try
{
// create a database connection
// 設定JDBC URL(即定義連接資料庫的協定:子協定:資料來源識別)並從DriverManager取得Connection
connection = DriverManager.getConnection("jdbc:sqlite:D:/Study/SQLiteJDBC/sample.db");
Statement statement = connection.createStatement();
statement.setQueryTimeout(30); // set timeout to 30 sec.
statement.executeUpdate("drop table if exists person");
statement.executeUpdate("create table person (id integer, name string)");
statement.executeUpdate("insert into person values(1, 'leo')");
statement.executeUpdate("insert into person values(2, 'yui')");
ResultSet rs = statement.executeQuery("select * from person");
while(rs.next())
{
// read the result set
System.out.println("name = " + rs.getString("name"));
System.out.println("id = " + rs.getInt("id"));
}
}
catch(SQLException e)
{
// if the error message is "out of memory",
// it probably means no database file is found
System.err.println(e.getMessage());
}
finally
{
try
{
if(connection != null)
connection.close();
}
catch(SQLException e)
{
// connection close failed.
System.err.println(e);
}
}
}
}
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