android 如何连接sqlserver数据库

Posted 2020-10-17 奔跑小王子

步骤如下：

1.下载jar包：jtds-1.3.1.jar；

2.将jtds-1.3.1.jar直接拷贝到项目下的app下的libs文件夹下；

3.创建java类：

package com.example.zhouy.mytest01;

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

/**
 * Created by Administrator on 2017/12/14.
 */

public class DBUtil {
    private static Connection getSQLConnection(String ip,String user,String pwd,String db)
    {
        Connection con =null;
        try {
            Class.forName("net.sourceforge.jtds.jdbc.Driver");
            con = DriverManager.getConnection("jdbc:jtds:sqlserver://"+ip+":1433/"+db+";charset=utf-8",user,pwd);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return con;

    }

    public static String QuerySQL(){

        String result="";

        try {
            Connection conn = getSQLConnection("192.168.1.xx","xx","xxx","DATABASE");
            String sql = "select top 10 * from users";
            Statement stmt = conn.createStatement();
            ResultSet rs = stmt.executeQuery(sql);
            while(rs.next())
            {
                String s1 = rs.getString("USRNAM");
                String s2 = rs.getString("FULLNAME");
                result += s1+" - " + s2 + "\n";
                System.out.println(s1+" - "+s2);
            }
            rs.close();
            stmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
            result += "查询数据异常！"+e.getMessage();
        }
        return result;
    }

    public static void main(String[] args){
        QuerySQL();

    }
}

直接运行即可测试是否连接成功；

如果出现failed to create directory错误请看上一篇博文；

如果出现android 中Network error IOException: failed to connect to /127.0.0.1 (port 1433): connect failed: ECONNREFUSED (Connection refused)错误请看上一篇博文；