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  • JDBC连接MySQL

    JDBC连接MySQL:
    
    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/mydata?user=root&password=abc123");
                stmt = conn.createStatement();
                rs = stmt.executeQuery("select * from dept");
                while (rs.next()) {
                    System.out.println(rs.getString("deptno"));
                }
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (SQLException ex) {
                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();
                }
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/mosquito-woo/p/3633710.html
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