原生JDBC编程的六个步骤

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=null;
         Statement stat=null;
        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!=null)stat.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            try {
                if(conn!=null)conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }