title: JDBC筆記
date: 2017-02-24 22:20:15
tags: JDBC

JDBC筆記

1. JDBC獲取新插入數據自動生成的ID

public static <T> T executeInsert(String sql, ResultSetHandler<T> resultSetHandler,Object...param){
        Connection connection = ConnectionManage.getConnection();
        QueryRunner runner = new QueryRunner();
        try {
            return runner.insert(connection,sql,resultSetHandler,param);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        finally {
            close(connection);
        }
        return null;
    }
//返回自動生成的鍵值

2. ConnectionManager類

public class ConnectionMananger {
    public static Connection getConnection(){
        try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection connection = DriverManager.getConnection("jdbc:mysql:///RUNOOB","root","****");
            return connection;
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }
}