import java.sql.*;

public class GetConn {
Connection con;
public Connection getConnection() { // 建立返回值为Connection的方法
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); //加载数据库驱动
System.out.println("数据库驱动加载成功");
con = DriverManager.getConnection("jdbc:sqlserver://localhost;1433"
+ "DatabaseName=student", "sa", ""); //获取数据库连接
if (con != null) {
System.out.println("数据库连接成功");
}
} catch (Exception e) {
e.printStackTrace();
}
return con; // 按方法要求返回个Connection对象
}
public static void main(String[] args) {
GetConn getConn = new GetConn(); // 创建本类对象
getConn.getConnection(); // 调用数据库连接方法
}
}


----------------------------------------------------
数据库驱动加载成功
com.microsoft.sqlserver.jdbc.SQLServerException: 用户 'sa' 登录失败。 ClientConnectionId:d92c913f-c0f0-459c-a701-a6c7a90886d7
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:216)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:254)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:84)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:2908)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:2234)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:41)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:2220)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:5696)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1715)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1326)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:991)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:827)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1012)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at GetConn.getConnection(GetConn.java:9)
at GetConn.main(GetConn.java:21)