lab7.java

来自「加拿大达内科技有限公司配需java程序员的上课时的代码」· Java 代码 · 共 52 行

package day02;

import java.sql.*;

public class Lab7 {

	public static void main(String[] args) {
		Connection con = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		String sql = null;
		try {
			// 取得连接对象
			con = JdbcUtil.getConnection();
			// 预编译SQL语句
//			sql = "insert into xun " + "values(?,?)";
//			ps = con.prepareStatement(sql);
//			for (int i = 100; i < 110; i++) {
//				// 准备一组参数
//				ps.setInt(1, i);
//				ps.setString(2, "Rose" + i);
//				// 提交参数，数据库执行相应的操作
//				// ps.executeUpdate();
//				ps.execute();
//			}
			JdbcUtil.release(ps);
			sql = "select * from xun where studentId >?";
			ps = con.prepareStatement(sql);
			ps.setInt(1, 10);
			// rs = ps.executeQuery();
			if (ps.execute()) {
				rs = ps.getResultSet();
			}
			int id = 0;
			String name = null;
			StringBuffer sb = new StringBuffer();
			while (rs.next()) {
				id = rs.getInt(1);
				name = rs.getString(2);
				sb.append("id = " + id);
				sb.append("	name = " + name + "\n");
			}
			System.out.println(sb.toString());

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			JdbcUtil.release(rs, ps, con);
		}
	}
}