连接前的三个条件:下载好JDK环境、Mysql、数据库驱动jar包
jar包也去MySQL官网上下就可以
然后创建数据库,我是在Navicat上建的数据库然后创建的表。也尝试在小黑框那创建了但总出错。跟着up主改配置改了一通up主是成果了,我也没成功。。。、
然后在eclipse上新建项目,连上之前下载好的jar包,打上代码,连接
package connect;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class ConnectTest {
private final static String url = "jdbc:mysql://localhost:3306/demo?serverTimezone=GMT";
private final static String username = "root";
private final static String password = "123456";
public static void main(String args[]) {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (Exception e) {
e.printStackTrace();
}
try {
Connection connect = DriverManager.getConnection(url, username, password);
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from student");
while (rs.next()) {
System.out.print("id:" + rs.getInt("id")+"\n");
System.out.print("name:" + rs.getString("name")+"\n");
System.out.println("gender:" + rs.getString("gender")+"\n");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
创建的表
运行连接数据库输出内容
标签:java,String,rs,数据库,static,mysql,import,连接 From: https://www.cnblogs.com/guozichan/p/18539364