将Android应用程序连接到Microsoft SQL Server 2008

首先。 我是Android应用程序开发环境的新手，我正在尝试使用简单的android应用程序使用jtds-1.3.1.jar驱动程序连接到mssqlserver 2008。 我在网上搜索了很多例子，但我没有连接数据库。
我得到的exception是网络错误IOException：连接超时
我不知道我使用Eclipse juno IDE的代码有什么问题。
这是我的代码

package com.example.Testproject1; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast; import android.widget.TextView; import java.sql.*; public class MainActivity extends ActionBarActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); connectTodatabase(); } public void connectTodatabase() { TextView txtView=(TextView)findViewById(R.id.textView2); String url = "jdbc:jtds:sqlserver://XXX.XXX.X.XXX:1433;DatabaseName=VautomateuShoppi"; String driver = "net.sourceforge.jtds.jdbc.Driver"; String userName = "VShopping_User"; String password = "VShopping_Pass"; // Declare the JDBC objects. Connection con = null; Statement stmt = null; ResultSet rs = null; try { // Establish the connection. Class.forName(driver); con = DriverManager.getConnection(url, userName, password); // Create and execute an SQL statement that returns some data. String SQL = "select * from SeoMaster"; stmt = con.createStatement(); rs = stmt.executeQuery(SQL); // Iterate through the data in the result set and display it. while (rs.next()) { txtView.setText(rs.getString(2)); } } catch(Exception ex) { txtView.setText(ex.getMessage().toString()); } } } 

Answer 1

添加这些代码

 StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); 

Answer 2

尝试这个

 public List dbConnect(String Host, String Port, String db_userid, String db_password) { List Db_list = new ArrayList(); try { String ConnectionString = "jdbc:jtds:sqlserver://" + Host + ":" + Port; // Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance(); Connection conn = DriverManager.getConnection(ConnectionString, db_userid, db_password); System.out.println("connected"); Statement statement = conn.createStatement(); String queryString = "select name from sys.databases"; ResultSet rs = statement.executeQuery(queryString); while (rs.next()) { Db_list.add(rs.getString(1)); } } catch (Exception e) { Db_list.add("Error"); e.printStackTrace(); } return Db_list; } 

参考Sql数据库连接使用JDBC驱动程序和android