JDBC编程步骤:
----java与Oracle数据的连接(lomboz_eclipse环境下)
1.在Oracle数据库安装文件夹中找到jdbc文件夹→lib文件夹→classesl2.jar
2.lomboz_eclipse中导入此Jar包
导入方法:
建立一个项目,在项目名称上右键鼠标选择Build Path→Add External Archives→
选择classesl2.jar进行导入
3.新建一程序编写与Oracle连接的代码
步骤如下:
1.实例话驱动类
class.forName("Oracle.jdbc.driver.OracleDriver");
2.建立到数据库的连接
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:
@192.168.8.1:1521:yuewei","scott","tiger");
3.将数据发送到数据库中
Statement stm = conn.CreatStatement();
4.执行语句(select语句)
ResultSet rs = stm.executeQuery(select * from dept);
5.显示语句
rs.getString("deptno");
完整代码如下:
[java] view plaincopy
- import java.sql.*;
- public class TestJDBC {
- public static void main(String[] args) {
- ResultSet rs = null;
- Statement stmt = null;
- Connection conn = null;
- try {
- Class.forName("oracle.jdbc.driver.OracleDriver");
- //new oracle.jdbc.driver.OracleDriver();
- conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.0.1:1521:yuewei", "scott", "tiger");
- stmt = conn.createStatement();
- rs = stmt.executeQuery("select * from dept");
- while(rs.next()) {
- System.out.println(rs.getString("deptno"));
- //System.out.println(rs.getInt("deptno"));
- }
- } catch (ClassNotFoundException e) {
- e.printStackTrace();
- } catch (SQLException e) {
- e.printStackTrace();
- } finally {
- try {
- if(rs != null) {
- rs.close();
- rs = null;
- }
- if(stmt != null) {
- stmt.close();
- stmt = null;
- }
- if(conn != null) {
- conn.close();
- conn = null;
- }
- } catch (SQLException e) {
- e.printStackTrace();
- }
- }
- }
- }
时间: 2024-10-27 14:34:11