Question

如何把二维数组放到mysql中

Answer 1

import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.util.LinkedList;import java.util.List;public class DataToArray { public static void main(String[] args) throws Exception { String url = "jdbc:mysql://localhost:3306/test";// 改成你的数据库连接 Connection conn = DriverManager.getConnection(url, "root", "fuhaiwei");// 改成你用户名密码 String sql = "select * from user";// 改成你的查询语句 PreparedStatement prestmt = conn.prepareStatement(sql); ResultSet rs = prestmt.executeQuery(); Object[][] data = getDataArray(rs); printArray(data); rs.close(); prestmt.close(); conn.close(); } private static void printArray(Object[][] data) { for (int i = 0; i < data.length; i++) { for (int j = 0; j < data[i].length; j++) { System.out.print(data[i][j] + " "); } Syste...