无法通过 java 连接到 SQL Server 2014

Question

问题已更新（DriverManager 不再手动加载，而是使用 getConnection() 方法）：

package guii;

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.SQLException;

/**
 * This program demonstrates how to establish database connection to Microsoft
 * SQL Server.
 * @author www.codejava.net
 *
 */
public class JdbcSQLServerConnection {

public static void main(String[] args) {

    Connection conn = null;

    try {

        String dbURL = "jdbc:sqlserver://ASUS\YES:1433";
        String user = "TestingUser";
        String pass = "12345";
        conn = DriverManager.getConnection(dbURL, user, pass);
        if (conn != null) {
            DatabaseMetaData dm = (DatabaseMetaData) conn.getMetaData();
            System.out.println("Driver name: " + dm.getDriverName());
            System.out.println("Driver version: " + dm.getDriverVersion());
            System.out.println("Product name: " + dm.getDatabaseProductName());
            System.out.println("Product version: " + dm.getDatabaseProductVersion());
        }

    } catch (SQLException ex) {
        ex.printStackTrace();
    } finally {
        try {
            if (conn != null && !conn.isClosed()) {
                conn.close();
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }
}
}

问题是这段代码产生的异常。我不知道抛出该特定异常的原因。

用户名、密码和服务器名已经过双重检查，完全正确。

当前抛出异常：

com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'TestingUser'.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:196)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:246)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:83)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:2532)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:1929)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access[=13=]0(SQLServerConnection.java:41)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:1917)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:4026)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1416)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1061)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:833)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:716)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:841)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at guii.JdbcSQLServerConnection.main(JdbcSQLServerConnection.java:25)

Answer 1

故障排除说明

再次使用 integratedSecurity=true
检查您的 system32 文件夹中是否有 sqljdbc_auch.dll 查看 this link 确保使用正确的（32 位与 64 位）确保 sqljdbc_auch.dll 在 Windows 系统路径中
检查您的服务器实例的属性是否设置正确：访问权限，确保它实际侦听端口 1433，... 查看 this link，不要只查看已接受的答案，还要查看其他两个答案。
确保您的防火墙不会阻止任何连接
检查您的 Java 版本是否与您使用的 jdbc 版本匹配 sqljdbc4.2 需要 Java 1.8，jdbc4.1 需要 java1.7。 look here

无法通过 java 连接到 SQL Server 2014

Cannot connect to SQL Server 2014 via java

java

sql-server

jdbc

database-connection

sql-server-2014-express