testjdbc.java

这是一个测试java jdbc数据库编程的标准程序模板

import java.sql.*;

public class TestJDBC {
	public static void main(String[] args) {
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		
		try {
			Class.forName("com.mysql.jdbc.Driver");
			conn = DriverManager.getConnection("jdbc:mysql://localhost/temp?user=root&password=root");
			stmt = conn.createStatement();
			String sql = "select * from dept";
			rs = stmt.executeQuery(sql);
			
			while(rs.next()){
				System.out.println(rs.getInt("deptno"));
				System.out.println(rs.getString("dname"));
				System.out.println(rs.getString("loc"));
			}
			
		}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();
			}
		}
	}
}