连接sql server 数据库

已经过测试验证！！~~

import com.artx.entity.DataAnalysis;

import java.sql.*;
import java.util.ArrayList;
import java.util.List;

public class MysqlConn {
　　// 如果想想连接mysql数据库 将url换成"jdbc:mysql://127.0.0.1:3306/数据库名称"
    private static String url = "jdbc:sqlserver://localhost:1433; DatabaseName=数据库名称";
    private static String user = "sa";
    private static String pwd = "chyxd";
    private static Connection conn;
    private static PreparedStatement pstmt;
    private static ResultSet rs;
　　 // 加载sql server驱动，如果想连接mysql，改成mysql加载的驱动即可"com.mysql.jdbc.Driver" 
    static {
        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void findDA() throws SQLException {
        Connection conn = DriverManager.getConnection(url, user, pwd);
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery("select * from DataAnalysis");
        while(rs.next()){//如果对象中有数据，就会循环打印出来
            system.out.println(rs.getString("数据库字段"))；
        }
        close();
        
    }
    private static void close(){
        if(rs != null){
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }finally {
                rs = null;
            }
        }
        if(pstmt != null){
            try {
                pstmt.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }finally {
                pstmt = null;
            }
        }
        if(conn != null){
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }finally {
                conn = null;
            }
        }
    }
}

注意：sqlserver连接时需要下载一个jar包放到工程当中否则会一个异常，我用的是sqljdbc4-2.0.jar，在网上找一下就能找到，mysql可能也需要，但没测试mysql
！！！~~~~