Snowflake JDBC 如何检查主机名/服务器的有效性？

编程问答 2022-04-30

问题描述

我正在测试我的 SNowflake JDBC 连接，但遇到了一个问题： 如何处理无效的 SNowflake 主机名？

例如正确的主机名应该是 123abc.us-east-1 但我输入了 123123.us-east-1

代码如下：

public static Connection getConnection(connectConfigs sfconfig) {
        try {
            Class.forName("com.sNowflake.client.jdbc.SNowflakeDriver");
        } catch (ClassNotFoundException ex) {
            System.err.println("Driver not found");
        }

        try {
            // build connection properties
            Properties properties = new Properties();
            properties.put("user",sfconfig.getSfUser());     // replace "" with your username
            properties.put("password",sfconfig.getSfPassword()); // replace "" with your password
            properties.put("account",sfconfig.getSfURL());  // replace "" with your account name
            properties.put("db",sfconfig.getSfDatabase().toupperCase());       // replace "" with target database name
            properties.put("schema",sfconfig.getSfSchema().toupperCase());   // replace "" with target schema name
            properties.put("loginTimeout",30);
            //properties.put("tracing","on");

            // create a new connection
            String connectStr = System.getenv("SF_JDBC_CONNECT_STRING");

            // use the default connection string if it is not set in environment
            if (connectStr == null) {
                connectStr = "jdbc:sNowflake://" + sfconfig.getSfURL() + ".sNowflakecomputing.com"; // replace accountName with your account name
            }
            return DriverManager.getConnection(connectStr,properties);
        } catch (sqlException e) {
            System.err.println("some error here");
        }
        return null;
    }

如果我提供无效的主机名，所有这些都会打印到控制台：

May 24,2021 4:34:05 PM net.sNowflake.client.jdbc.RestRequest execute
SEVERE: Stop retrying since elapsed time due to network issues has reached timeout. Elapsed: 69,280(ms),timeout: 60,000(ms)
May 24,2021 4:34:05 PM net.sNowflake.client.jdbc.RestRequest execute
SEVERE: Error response: HTTP Response code: 403,request: POST https://123123.us-east-1.sNowflakecomputing.com:443/session/v1/login-request?databaseName=TEST_CONNECT&schemaName=FRIEND&requestId=b4c13959-cbbf-45b8-acf6-f758176545e5 HTTP/1.1
May 24,2021 4:34:05 PM net.sNowflake.client.core.HttpUtil executeRequestInternal
SEVERE: Error executing request: POST https://123123.us-east-1.sNowflakecomputing.com:443/session/v1/login-request?databaseName=TEST_CONNECT&schemaName=FRIEND&requestId=b4c13959-cbbf-45b8-acf6-f758176545e5 HTTP/1.1
May 24,2021 4:34:05 PM net.sNowflake.client.jdbc.SNowflakeUtil logResponseDetails
SEVERE: Response status line reason: Forbidden
May 24,2021 4:34:05 PM net.sNowflake.client.jdbc.SNowflakeUtil logResponseDetails
SEVERE: Response content: <html>
<head><title>403 Forbidden</title></head>
<body>
<center><h1>403 Forbidden</h1></center>
</body>
</html>

我该如何优雅地处理这个问题，而不是将这个巨大的混乱打印到控制台？

提前致谢！

解决方法

将这一行添加到连接属性解决了我的问题。

properties.put("tracing","OFF");
connectorjavajavajdbcsnowflake-cloud-data-platform