Read a Java array in Javascript

Question

I've a method that returns a 2d-array in java : public Object[][] getArray1() {}

I used println() to print it's content and i see that its well created.

On Javascript i assign this array to a var:

var content ="#{BDEStats.getArray1()}";

But i dont seem able to acess it's data. it always returns java.Lang.object; @... How can i do to display the content this array holds?

I've tried to cycle the array but i dont know how to refer to the objects it is holding. if i use content[1] to returns a char in that índex..! Kinda lost here

Answer 1

I think you may convert the array to JSON format before assigning it to javascript.

You can use some JSON framework to do this convert like:

• JSON-lib
• Jackson

Here a tiny Jackson demo:

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

...

public static void main(String[] args) throws JsonProcessingException {
    String[][] data = new String[1][2];
    data[0][0] = "abc";
    data[0][1] = "def";
    System.out.println(new ObjectMapper().writeValueAsString(data));
}