[Java SDK V2] How to find out whether file exists or not

Question

Spoiler

Hello,

we are migrating from Java SDK API V1 to Java SDK V2 and I am writing some integration tests.

For example, after I delete a file I need to check, that this file is no longer present on Drobpox or after upload I need to check, that file is there. What is the recommended way, how to do that?

My current ****** workaround is this:

private boolean fileExistsOnDbx(String dropboxPath, DbxClientWrapper dbxClientWrapper) throws DbxException {
        try{
            dbxClientWrapper.files().getMetadata(dropboxPath);
            return true;
        }catch (GetMetadataErrorException e){
            if (e.getMessage().contains("{\".tag\":\"path\",\"path\":\"not_found\"}")) {
                return false;
            } else {
                throw e;
            }
        }
    }

Thank you,

Michal

Greg-DB · Accepted Answer

You can access the structured error information like this:

try {
            client.files().getMetadata(dropboxPath);
        } catch (GetMetadataErrorException e){
            if (e.errorValue.isPath() && e.errorValue.getPathValue().isNotFound()) {
                System.out.println("File not found.");
            } else {
                throw e;
            }
        }