testmysqlconnection.java

用于JDBC访问MySQL数据库的测试程序

import java.sql.*;

public class TestMysqlConnection {
	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/School?user=root&password=peng");
			stmt = conn.createStatement();
			rs = stmt.executeQuery("select * from teacher");
			while (rs.next()) {
				System.out.println(rs.getString("tno"));
				System.out.println(rs.getString("tname"));
				System.out.println(rs.getString("tsex"));
			}

		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException ex) {
			// handle any errors
			System.out.println("SQLException: " + ex.getMessage());
			System.out.println("SQLState: " + ex.getSQLState());
			System.out.println("VendorError: " + ex.getErrorCode());
		} 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();
			}
		}

	}

}