用jtds连接sqlserver问题,在eclipse下连接成功在android studio下失败
近来想学习android studio连接sql2008在网上都是eclipse的例子,下面的例子我在eclipse中测试成功,在android studio中无论是jtds-1.3.1还是jtds-1.2.7都不成功, 加载驱动Class.forName("net.sourceforge.jtds.jdbc.Driver");是成功的,连接数据库 con = DriverManager.getConnection("jdbc:jtds:sqlserver://" + ip + ":1433/" + db + ";charset=utf8", user, pwd);是不成功的,而为什么在eclipse下就能成功呢,刚学 android studio 请各位高手指点,谢谢
DataBaseUtil.java类
package com.example.administrator.myapplication1;
/**
* Created by Administrator on 2017/8/26.
*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class DataBaseUtil
{
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=utf8", user, pwd);
} catch (ClassNotFoundException e)
{
e.printStackTrace();
} catch (SQLException e)
{
e.printStackTrace();
}
return con;
}
public static String testSQL()
{
String result = "字段1 - 字段2\n";
try
{
Connection conn = getSQLConnection("192.168.0.103", "sa", "******", "zxks");
String sql = "select top 10 * from ry100";
Statement stmt = conn.createStatement();// 閸掓稑缂揝tatement
ResultSet rs = stmt.executeQuery(sql);
while (rs.next())
{// <code>ResultSet</code>
String s1 = rs.getString("test_id");
String s2 = rs.getString("test_name");
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)
{
testSQL();
}
}
MainActivity1.java
package com.example.administrator.myapplication1;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
import android.support.v7.app.AppCompatActivity;
//import java.sql.Connection;
public class MainActivity1 extends AppCompatActivity
{
private View btnTest;
private View btnClean;
private View button1;
private TextView tvTestResult;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main1);
btnTest=findViewById(R.id.btnTestSql);
btnClean=findViewById(R.id.btnClean);
tvTestResult = (TextView)findViewById(R.id.tvTestResult);
// button1 = findViewById(R.id.button1);
btnTest.setOnClickListener(getClickEvent());
btnClean.setOnClickListener(getClickEvent());
// button1.setOnClickListener(getClickEvent());
// Thread thread = new Thread(cont);
// thread.start();
}
private View.OnClickListener getClickEvent(){
return new View.OnClickListener()
{
@Override
public void onClick(View v)
{
tvTestResult.setText("...");
if(v==btnTest){
test();
}
}
};
}
private void test()
{
Runnable run = new Runnable()
{
@Override
public void run()
{
String ret = DataBaseUtil.testSQL();
Message msg = new Message();
msg.what=1001;
Bundle data = new Bundle();
data.putString("result", ret);
msg.setData(data);
mHandler.sendMessage(msg);
}
};
new Thread(run).start();
}
Handler mHandler = new Handler(){
public void handleMessage(android.os.Message msg) {
switch (msg.what)
{
case 1001:
String str = msg.getData().getString("result");
tvTestResult.setText(str);
break;
default:
break;
}
};
};
}
activity_main1
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.administrator.myapplication1.MainActivity1">
<Button
android:id="@+id/btnTestSql"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/testSQL"/>
<Button
android:id="@+id/btnClean"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="@string/clean"/>
<TextView
android:id="@+id/tvTestResult"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/btnTestSql"
android:text="@string/hello_world" />
</RelativeLayout>