delimiter // drop procedure add_pro // create procedure add_pro(a int , b int , out sum int ) begin set sum = a * b; end; //

package com.zhanggaosong; import java.sql.CallableStatement; import java.sql.Connection; import java.sql.DriverManager; import java.sql.Types; public class CallableStatementTest { public static final String DRIVER_CLASS = "com.mysql.jdbc.Driver"; public static final String URL = "jdbc:mysql://127.0.0.1:3306/test"; public static final String USERNAME = "root"; public static final String PASSWORD = "123456"; public static void main(String[] args) throws Exception { Class.forName(DRIVER_CLASS); Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD); String sql = "{CALL add_pro(?,?,?)}"; //调用存储过程 CallableStatement cstm = connection.prepareCall(sql); //实例化对象cstm cstm.setInt(1, 122); cstm.setInt(2, 2); // cstm.registerOutParameter(3, Types.INTEGER); // 设置返回值类型 cstm.execute(); // 执行存储过程 System.out.println(cstm.getInt(3)); cstm.close(); connection.close(); } }