使用JDBC连接到Azure SQL数据仓库时出现SQLException

我正在尝试通过JDBC连接到Azure SQL数据仓库 . 我收到以下异常 .

com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host tcsqldatawh.database.windows.net, port 1433 has failed. Error: "null. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.".
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:191)
at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:242)
    at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2280)
    at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:493)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1387)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1068)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:904)
    at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:451)
    at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1014)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:270)
    at testsqldw.SQLDatabaseConnection.main(SQLDatabaseConnection.java:30)

我已经看到有关连接到SQLServer DB here的类似问题 .

我将数据库配置为允许使用进程here访问我的IP .

请检查以下代码：

package testsqldw;

import java.sql.*;  

    public class SQLDatabaseConnection {  

        // Connect to your database.  
        // Replace server name, username, and password with your credentials  
        public static void main(String[] args) {  


            String connectionString =  
                    "jdbc:sqlserver://databaseserver.database.windows.net:1433;"
                    +"database=databaseserver;"
                    +"user=username@databaseserver;"
                    + "password=password;"
                    + "encrypt=true;"
                    + "trustServerCertificate=false;"
                    + "hostNameInCertificate=*.database.windows.net;"
                    + "loginTimeout=30;";

            System.out.println("Total connection string is---\n"+connectionString);

            // Declare the JDBC objects.  
            Connection connection = null;  
            Statement statement = null;   
            ResultSet resultSet = null;  

            try {  
                connection = DriverManager.getConnection(connectionString);  

                // Create and execute a SELECT SQL statement.  
                String createSql = "create table employee(employee_id varchar(20));";  
                statement = connection.createStatement();  
                boolean status=statement.execute(createSql);

                System.out.println(status);

                // Print results from select statement  

            }  
            catch (Exception e) {  
                e.printStackTrace();  
            }  
            finally {  
                // Close the connections after the data has been handled.  

                if (statement != null) try { statement.close(); } catch(Exception e) {}  
                if (connection != null) try { connection.close(); } catch(Exception e) {}  
            }  
        }  
    }

总连接字符串是

jdbc：sqlserver：//databaseserver.database.windows.net：1433; database = databaseserver; user = username @ databaseserver; password = password; encrypt = true; trustServerCertificate = false; hostNameInCertificate = * .database.windows.net; loginTimeout = 30;

请帮我解决这个问题 .