我正在尝试通过localhost上的JDBC连接到我的数据库.通过Windows身份验证连接没问题,但是我想通过SQL身份验证连接.因此,我在数据库中创建了一个登录名和一个与此登录名相对应的用户.我通常可以登录SSMS：

我的JDBC连接字符串：

jdbc：sqlserver：// localhost：1433; databaseName = TestBazyDanych; user = doszke; password = doszke123

抛出异常：

com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'doszke'. ClientConnectionId:b7005fe3-904d-40c5-a89e-af0cb61250d6

at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:254)

at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:258)

at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:104)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:4772)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:3581)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:81)

at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:3541)

at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7240)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:2869)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2395)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:2042)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1889)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1120)

at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:700)

at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:677)

at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:251)

at main.Main.main(Main.java:38)

用户名和密码与用于登录SSMS的用户名和密码相同.

这是我的班级代码：

package main;

import java.sql.*;

public class Main {

private static ResultSet selectStan(Connection connection) throws SQLException {

String sql_stmt = "SELECT * FROM STAN;";

Statement statement = connection.createStatement();

ResultSet result = statement.executeQuery(sql_stmt);

System.out.println("Select executed");

return result;

}

public static void main(String[] args) {

try {

Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

} catch (ClassNotFoundException e) {

e.printStackTrace();

}

String userName = "doszke";

String password = "doszke123";

String url = "jdbc:sqlserver://localhost:1433;databaseName=TestBazyDanych;user=doszke;password=doszke123";

try (Connection con = DriverManager.getConnection(url)) {

if(con != null){

System.out.println("connected");

} else {

System.out.println("unable to connect");

}

}

catch (SQLException e) {

e.printStackTrace();

}

}

}