eclipse连接sql数据库测试

sql的jar包下载：mysql-connector-java.jar

打开以下网址免费下载:

www.codingutil.com/searchJar.html?jarName=mysql-connector-java

打开eclipse，创建工程，工程名称用鼠标右键点击，选择Build Path–>Add External Archives–>选择刚才下载的驱动即可，接下来要验证是否连接成功

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySqlTest {
       static String exec = "select * from table01";
       public static void main(String[] args) {
             link();//连接测试
       }

       public static void link() {
             try {
                    conn();
             } catch (SQLException e) {
                    e.printStackTrace();
             } catch (ClassNotFoundException e) {
                  e.printStackTrace();
        }
       }

       public static void conn() throws SQLException ,ClassNotFoundException {
               //注册jdbc
               Class.forName("com.mysql.jdbc.Driver");
               //这里是连接的路径与用户名密码，本机默认是localhost:3306，database01是我在上面命令行界面创建的数据库名称
             Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/database01","root","11111");
             System.out.println("login mysql ok");
             Statement sm = conn.createStatement();
               //写查询语句
             ResultSet re = sm.executeQuery(exec);
               //获取指针对象，做相应的操作
             while (re.next()) {
                    System.out.println("查询:"+re.getString("name"));
             }
             re.close();
            sm.close();
            conn.close();
       }
}