jdbc連接MariaDB數據庫
1、準備好MariaDB驅動
下載鏈接: https://dwz.cn/YrEJbBFg
2、在數據庫中創建數據庫test以及表
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for tb_demo1
-- ----------------------------
DROP TABLE IF EXISTS `tb_demo1`;
CREATE TABLE `tb_demo1` (
`id` int(30) NOT NULL AUTO_INCREMENT,
`username` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
`password` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 3 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of tb_demo1
-- ----------------------------
INSERT INTO `tb_demo1` VALUES (1, 'admin', 'pass');
INSERT INTO `tb_demo1` VALUES (2, 'user1', 'user1');
SET FOREIGN_KEY_CHECKS = 1;
3、新建項目
準備好鏈接之後,這裏用的jdk1.8,eclipse新建一個項目
項目目錄結構
下面直接貼代碼
package com.mariadb.connect;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ConnectDemo1 {
public static void main(String[] args) {
// 數據庫驅動
String driver ="org.mariadb.jdbc.Driver";
// url
String url = "jdbc:mariadb://localhost:3306/test";
// 用戶名
String user = "root";
// 密碼
String pass = "root";
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
// 註冊數據庫驅動
Class.forName(driver);
// 獲取數據庫連接
conn = DriverManager.getConnection(url,user,pass);
// 創建Statement對象
stmt = conn.createStatement();
// 要查詢的語句
String sql = "select username,password from tb_demo1";
// 執行查詢
rs = stmt.executeQuery(sql);
// 輸出查詢結果
while(rs.next()) {
System.out.println("用戶名: "+rs.getString(1)
+"\t 密碼: "+rs.getString(2));
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
// 關閉結果
if(rs!=null) {
rs.close();
}
// 關閉載體
if(stmt!=null) {
stmt.close();
}
// 關閉連接
if(conn!=null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}