jdbc连接mysql数据库时出现了如下问题，求各位大神帮帮忙

package com.bl.db;

import java.sql.DriverManager;
import java.sql.SQLException;

import com.blog.port.*;
import java.sql.*;

public class DBTool implements IDBTool {

Connection conn;

public Connection getConn(){
try {
DriverManager.registerDriver(new com.microsoft.jdbc.sqlserver.SQLServerDriver());
conn = DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;databasename=Data","sa","");
} catch (SQLException e) {
// TODO 自动生成 catch 块
e.printStackTrace();
}
return conn;

网不通，超时了