标签:nts tps 接口 mysq demo encoding html color bubuko
调用过程可以当作函数理解,具体参考本人博文https://www.cnblogs.com/xixixing/p/9720261.html
MySQL的test数据库中已经创建好存储过程p2(n),实现筛选school表id>n的信息
CallableStatement callStatement=con.prepareCall("{call p2(?)}"); 调用test数据库的调用过程p2
callStatement.setString(1,"2"); 赋值,筛选school表id>2的信息
ResultSet rs=callStatement.executeQuery(); 结果展示
import java.sql.*; public class Demo { public static void main(String[] args) { //定义为null,因为它们是数据流,之后要finally依次关闭 Connection con = null;//连接 CallableStatement call=null;//调用过程语句接口 ResultSet rs = null;//结果集接口 try { Class.forName("com.mysql.cj.jdbc.Driver");//加载驱动 String url = "jdbc:mysql://localhost:3306/test?serverTimezone=UTC&characterEncoding=utf8&useSSL=false"; con = DriverManager.getConnection(url, "root", "123456");//连接数据库test //System.out.println(con);//查看结果,确认是否连接成功 call=con.prepareCall("{call p2(?)}"); call.setString(1,"2");//给通配符?赋值,即n=2 rs=call.executeQuery(); System.out.println("id\tname\tsex\tbirthday"); while (rs.next()) {//下一行 int id = rs.getInt("id");//或1,第一列值 String name = rs.getString(2); String sex = rs.getString(3); String birthday = rs.getString(4); System.out.println(id + "\t" + name + "\t" + sex + "\t" +birthday); } } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); } finally {//注意流的关闭顺序 if (rs != null) { try { rs.close(); } catch (SQLException e) { e.printStackTrace(); } } if (call != null) { try { call.close(); } catch (SQLException e) { e.printStackTrace(); } } if (con != null) { try { con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } }
JDBC调用MySQL的调用过程CallableStatement
标签:nts tps 接口 mysq demo encoding html color bubuko
原文地址:https://www.cnblogs.com/xixixing/p/9720427.html