Troubleshooting

Error Handling

Our generated clients raise exceptions defined in com.azure.core.exception. While the base for all exceptions is AzureException, HttpResponseException is also a common base catch-all for exceptions, as these errors are thrown in the case of a request being made, and a non-successful status code being received from the service.

A very basic form of error handling looks like this

package com.azure.pets;

import com.azure.identity.DefaultAzureCredentialBuilder;
import com.azure.pets.models.Dog;

public static void main(String args[])
{
    PetsClient client = new PetsClientBuilder()
        .credential(new DefaultAzureCredentialBuilder().build())
        .buildClient();

    try {
        Dog dog = client.getDog();
    } catch (HttpResponseException e) {
        System.out.println(e.getMessage());
    }

}

You can also catch errors with more granularity, i.e. just catching a ResourceNotFoundException.

package com.azure.pets;

import com.azure.identity.DefaultAzureCredentialBuilder;
import com.azure.pets.models.Dog;

public static void main(String args[])
{
    PetsClient client = new PetsClientBuilder()
        .credential(new DefaultAzureCredentialBuilder().build())
        .buildClient();

    try {
        Dog dog = client.getDog();
    } catch (ResourceNotFoundException e) {
        System.out.println(e.getMessage());
    }

}

Logging

You can set the AZURE_LOG_LEVEL environment variable to view logging statements made in the client library. For example, setting AZURE_LOG_LEVEL=LogLevel.ERROR would show all error log messages. The log levels can be found here: log levels.

View our logging wiki for more detailed instructions on enabling logging.