java - jdbc 连接到 SQL Server

Question

我连接到 SQL Server 时遇到问题。我已经尝试检查网络上的其他代码和资源，但它不起作用。

JDBC 代码

Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn = DriverManager.getConnection("jdbc:sqlserver://IP_ADD;databaseName=DB_NAME", "MY_USER", "MY_PASS");

错误日志

Error during process run: The TCP/IP connection to the host IP_ADDRESS, port
1433 has failed. Error: "connect timed out. Verify the connection properties, check that an instance of SQL Server
is running on the host and accepting TCP/IP connections at the port, and that no firewall is blocking TCP connections to the port.".

com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host IP_ADDRESS, port 1433 has failed.
Error: "connect timed out. Verify the connection properties, check that an instance of SQL Server is running on the host
and accepting TCP/IP connections at the port, and that no firewall is blocking TCP connections to the port.".
        at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:170)
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1049)
        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(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at LoadTextFile.main(LoadTextFile.java:40)

Answer 1

错误中很清楚:

The TCP/IP connection to the host IP_ADDRESS, port 1433 has failed. 

您似乎正在为服务器使用 IP_ADDRESS 常量。确保 IP_ADDRESS 具有正确的主机名，(或)将其替换为数据库 URL 中的实际服务器名称/IP 地址。