- package com.test;
- import java.sql.Connection;
- import java.sql.PreparedStatement;
- import java.sql.ResultSet;
- import java.sql.Statement;
- import java.util.Date;
- import java.util.Properties;
- /**
- * 数据库连接对象管理类
- * @说明
- * @author cuisuqiang
- * @version 1.0
- * @since
- */
- public class ConnectionManager {
- private static final String url = "jdbc:mysql://localhost:3306/test";
- private static final String username = "root";
- private static final String userpass = "root";
- @SuppressWarnings("deprecation")
- public static void main(String[] args) throws Exception{
- Connection conn = getConnection();
- if (null != conn) {
- String sql = "insert into common_user (name) values(?)";
- // 指定返回生成的主键
- PreparedStatement pstmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
- // 如果使用静态的SQL,则不需要动态插入参数
- pstmt.setString(1, new Date().toLocaleString());
- pstmt.executeUpdate();
- // 检索由于执行此 Statement 对象而创建的所有自动生成的键
- ResultSet rs = pstmt.getGeneratedKeys();
- if (rs.next()) {
- Long id = rs.getLong(1);
- System.out.println("数据主键:" + id);
- }
- }
- }
- public static Connection getConnection() {
- Connection conn = null;
- try {
- com.mysql.jdbc.Driver driver = new com.mysql.jdbc.Driver();
- Properties properties = new Properties();
- properties.put("user", username);
- properties.put("password", userpass);
- conn = driver.connect(url, properties);
- } catch (Exception e) {
- e.printStackTrace();
- }
- return conn;
- }
- }