sqlite的基本使用示例
发布时间:2020-12-12 20:19:14 所属栏目:百科 来源:网络整理
导读:To:上一篇文章 上一文章写得有点复杂,需要创建datasource,然后还有一大堆的封装方法,这里参考官网上(https://bitbucket.org/xerial/sqlite-jdbc#markdown-header-usage)的示例,如下: 具体流程 (1)Connection conn = DriverManager.getConnection("
To:上一篇文章 上一文章写得有点复杂,需要创建datasource,然后还有一大堆的封装方法,这里参考官网上(https://bitbucket.org/xerial/sqlite-jdbc#markdown-header-usage)的示例,如下: 具体流程 (2)Statement statement = conn.createStatement(); (3)statement.executeUpdate("select/insert/drop/delete等sql语句"); (4)conn.close()
注意:关于在windows/Linux/以及在内存上创建sqlite数据库有一下集中方法: (1)Windows上创建connection Connection connection = DriverManager.getConnection("jdbc:sqlite:C:/work/mydatabase.db"); (2)Linux上创建connection Connection connection = DriverManager.getConnection("jdbc:sqlite:/home/leo/work/mydatabase.db"); (3)没有db文件,只在内存上临时创建 Connection connection = DriverManager.getConnection("jdbc:sqlite::memory:"); 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 Class.forName("org.sqlite.JDBC"); Connection connection = null; try { // create a database connection connection = DriverManager.getConnection("jdbc:sqlite: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); } } } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |