Using ArrayList with JavaScript in OH3 to send mail with attachment using sendHtmlMail

Setup, Configuration and Use Scripts & Rules
1
  • Platform information:
    • Hardware: Raspberry Pi 4
    • OS: Raspbian
    • openHAB version: 3.0.1

I’m trying to call the sendHtmlMail method from a smtp-thing, while adding an attachment as ArrayList in JavaScript.
I had done this previously successfully in OH 2.5 using the default rule-languge, so following example works perfectly in OH 2.5:

val List<String> attachmentUrlList = newArrayList("file:///C:/openhab/conf/html/carport/ipcamera.gif")
val mailActions = getActions("mail","mail:smtp:16158a15")
mailActions.sendHtmlMail("my@mail.com", "subject", "body", attachmentUrlList)

I’m currently in a process of moving to OH 3.0.1 and would prefer using JavaScript for all my scripts/rules, which I’m way more familiar in, but for some reason I can’t get that array list working and always end up with the a log message explaining me that the fourth parameter does not exist in the method signature:

var mailActions = actions.get("mail","mail:smtp:5041fc7916");
mailActions.sendHtmlMail("my@mail.com", "subject", "body", ["/tmp/test"]);

2021-03-24 10:56:54.006 [ERROR] [internal.handler.ScriptActionHandler] - Script execution of rule with UID 'c2e0c762c4' failed: TypeError: Can not invoke method [jdk.dynalink.beans.SimpleDynamicMethod Boolean org.openhab.binding.mail.internal.action.SendMailActions.sendHtmlMail(String,String,String)] with the passed arguments; they do not match any of its method signatures. in <eval> at line number 11

As soon as I leave out the fourth parameter the mail is successfully send, but I obviously want to have that attachment in the mail as well.

2

Bear in mind the Action expects a Java List type object. I expect it chokes on a different javascript object type. I don’t have a cure to offer, but you must somehow create a java.util.List I think.
“stream” might be a clue word here? (or is that going the other direction?!)

3

Thanks that helped me already in understanding way more of the internals how to create Java types in JavaScript, but even an ArrayList or ListString didn’t change the log-output.

var arrayListType = Java.type("java.util.ArrayList")
var arrayList = new arrayListType();
arrayList.add("/tmp/test");

var listType = Java.type("java.util.List")
var list = new listType(new String("/tmp/test"));
4

may be this helps, it seems as if the function names changed …
JavaScript cannot attach file to email