JDBC编程的六个步骤:
准备工作中导入ojdbc文件,然后右键选中添加路径
build path-->到oracle安装目录里添加oracle的ojdbc.jar包
(1).注册驱动
Class.forName("oracle.jdbc.OracleDriver");
(2).连接数据库
String url = "jdbc:oracle:thin:@localhost:1521:xe";//其中xe为sid
String user = "XXX";
String password = "XXX";
Connection conn = DriverManager.getConnection(url,name,password);
(3).创建搬运工statement
Statement state = conn.createStatement();
(4).搬运数据,执行SQL语句
String sql = "select id,name from s_emp"; //"insert into s_emp(id,name) values(12,'zhangsan')";
ResultSet rs = state.executeQuery(sql);
(5).处理结果集
while(rs.next()){
int id = rs.getInt("id");
String name = rs.getString(2);
System.out.println(id+" "+name);
}
(6).关闭连接
rs.close();
state.close();
conn.close();
如下面所示代码,实现插入操作
- public void test_insert()
- {
- String driver="oracle.jdbc.driver.OracleDriver";
- String url="jdbc:oracle:thin:@127.0.0.1:1521:orcl";//orcl为sid
- String user="briup";
- String password="briup";
- Connection conn=;
- Statement stat=;
- try {
- //1、注册驱动
- Class.forName(driver);
- //2、获取连接
- conn= DriverManager.getConnection(url, user, password);
- //System.out.println(conn);
- //3、创建statement对象
- stat=conn.createStatement();
- //4、执行sql语句
- String sql="insert into lover values(5,'suxingxing',to_date('21-9-2016','dd-mm-yyyy'))";
- stat.execute(sql);
- //System.out.println(stat.execute(sql));
- //5、处理结果集,如果有的话就处理,没有就不用处理,当然insert语句就不用处理了
- } catch (Exception e) {
- e.printStackTrace();
- }
- finally{
- //6、关闭资源
- try {
- if(stat!=)stat.close();
- } catch (SQLException e) {
- e.printStackTrace();
- }
- try {
- if(conn!=)conn.close();
- } catch (SQLException e) {
- e.printStackTrace();
- }
- }
- }