Mailjet API v3 update

Question

I have a serious issue regarding the REST API of Mailjet as used with the recommended v3 library.

When I try to UPDATE I am able to do so for the first time without errors, but when I try to do so again, I got NullPointerException. In spite of that, it does update the stat in the Mailjet Server part.

Also the HTTP Response I get is HTTP/1.1 500 Internal Server Error

Code used:

thisUser=cl.createCall(User.Update).identifiedBy(UserProperty.ID, **myUniqueID**).property(UserProperty.USERNAME, propertyValue).execute();

Any thoughts would be more than welcome.

Ok after the comment, here is the function:

         @Path("/userUpdate/{propertyName}/{propertyValue}")
     @GET
     public Response userUpdate(@PathParam("propertyName") String propertyName, @PathParam("propertyValue") String propertyValue) throws ClientProtocolException, IOException{
         MailJetApiClient cl=null;
         User thisUser=null;
         Response resp=null;

         StringEntity stringEntity = null;

        try {
            cl = MailjetUsersRest.createClient();
        } catch (MailJetClientConfigurationException e2) {
            // TODO Auto-generated catch block
            e2.printStackTrace();
        }

        try {
            thisUser=cl.createCall(User.Get).identifiedBy(UserProperty.ID, ___MY_UNIQUE_ID___).execute();
        } catch (MailJetApiCallException e2) {
            // TODO Auto-generated catch block
            e2.printStackTrace();
        }
        String email = thisUser.getEmail();
        String lastip = thisUser.getLastIp();
        Date lastlogin = thisUser.getLastLoginAt();
        String local = thisUser.getLocale();
        String timezone = thisUser.getTimezone();
        Date warned = thisUser.getWarnedRatelimitAt();          

         try {

            cl = MailjetUsersRest.createClient();

            switch(propertyName){

            case "Username":

                thisUser=cl.createCall(User.Update).identifiedBy(UserProperty.ID, ___MY_UNIQUE_ID___).property(UserProperty.USERNAME, propertyValue).execute();

                resp = Response.status(200).entity(thisUser).build();

                break;

            default:
                System.out.println("Invalid propertyName.");
                break;
            }

        } catch (MailJetClientConfigurationException | MailJetApiCallException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


            return resp;
     }

Answer 1

First of all, thank you for using Mailjet!

After some testing, I was unable to reproduce your issue. You will find below the code I used.

However I strongly suggest that you open a ticket with our support here.

A working code

Please note that it is unnecessary and considered bad practice to rebuild the client before each call.

// Build a Mailjet client config
MailJetClientConfiguration config;

config = new MailJetClientConfiguration()
                .setBaseUrl("https://api.mailjet.com/v3/REST/")
                .setDefaultApiKey(System.getenv("MJ_PROD_PUBLIC"))
                .setDefaultSecretKey(System.getenv("MJ_PROD_PRIVATE"));

// Build a Mailjet client
MailJetApiClient client = config.buildClient();

// Your code (adapted to my environment, ie no 'Response' object 
// and no client factory.)
User thisUser = null;

try
{
    // Note that the 'L' in the 'identifiedBy' value fi is necessary
    thisUser = client
                .createCall(User.Get)
                .identifiedBy(UserProperty.ID, /*Our user's ID*/L)
                .execute();
}
catch (MailJetApiCallException e2)
{
    e2.printStackTrace();
}

String email = thisUser.getEmail();
String lastip = thisUser.getLastIp();
Date lastlogin = thisUser.getLastLoginAt();
String local = thisUser.getLocale();
String timezone = thisUser.getTimezone();
Date warned = thisUser.getWarnedRatelimitAt();

try
{
    thisUser = client
                .createCall(User.Update)
                .identifiedBy(UserProperty.ID, /*Our user's ID*/L)
                .property(UserProperty.USERNAME, "DevRel Team Mailjet")
                .execute();

}
catch (MailJetApiCallException e)
{
    e.printStackTrace();
}

Copy pasting the last bit (the update process) so that the update call is executed twice (without the same new username, of course) doesn't throw any error and certainly not a NullPointerException or a 500 HTTP error code.
And the username is changed accordingly.

So yeah, as written above, please contact our support here. This will allow us to better help you.

If this answer satisfies you, don't forget to accept & upvote it so that others going through similar issues can know this helped :-)