Java handles UnresolvedAddressException and solves the problem

Java handles UnresolvedAddressException exception

When encountering in a Java programUnresolvedAddressExceptionIn the event of an exception, it can be processed from the aspects of exception capture, exception logging, input verification, retry mechanism, alternate address processing, etc.

The following is a detailed introduction to you:

1. Catch and handle exceptions

Use in codetry-catchBlock CaptureUnresolvedAddressExceptionException is then processed according to the specific situation.

For example, output error messages or take other recovery measures.

import ;
import ;
import ;
import ;

public class ExceptionHandlingExample {
    public static void main(String[] args) {
        try {
            DatagramChannel channel = ();
            // Assume that this is a possible unresolved address            InetSocketAddress address = new InetSocketAddress("invalidaddress", 8080);
            ByteBuffer buffer = ("Hello".getBytes());
            (buffer, address);
        } catch (UnresolvedAddressException e) {
            ("Address resolution failed: " + ());
            // More processing logic can be added here, such as prompting the user to check the address        } catch (Exception e) {
            ();
        }
    }
}

2. Record exception logs

Use log frameworks (such as Log4j, SLF4J, etc.) to record exception information, which will help follow-up problem troubleshooting and system maintenance.

import org.;
import org.;
import ;
import ;
import ;
import ;

public class LoggingExample {
    private static final Logger logger = ();

    public static void main(String[] args) {
        try {
            DatagramChannel channel = ();
            InetSocketAddress address = new InetSocketAddress("invalidaddress", 8080);
            ByteBuffer buffer = ("Hello".getBytes());
            (buffer, address);
        } catch (UnresolvedAddressException e) {
            ("Address resolution failed", e);
        } catch (Exception e) {
            ("Other exception occurred", e);
        }
    }
}

3. Provide an alternate address

When an address resolution fails, you can try using an alternate address.

import ;
import ;
import ;
import ;

public class BackupAddressExample {
    public static void main(String[] args) {
        String primaryAddress = "invalidaddress";
        String backupAddress = "validaddress";

        try {
            DatagramChannel channel = ();
            InetSocketAddress address = new InetSocketAddress(primaryAddress, 8080);
            ByteBuffer buffer = ("Hello".getBytes());
            (buffer, address);
        } catch (UnresolvedAddressException e) {
            ("Main address resolution failed, try alternate address");
            try {
                DatagramChannel channel = ();
                InetSocketAddress backup = new InetSocketAddress(backupAddress, 8080);
                ByteBuffer buffer = ("Hello".getBytes());
                (buffer, backup);
            } catch (Exception ex) {
                ();
            }
        } catch (Exception e) {
            ();
        }
    }
}

Summarize

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