Please help me convert XML string to Json string

Question

I'm try converting from xml string to json string as below:

 

I have xml string structure like this. 

<items>
    <item>
        <id>1</id>
        <name>Name 1</name>
    </item>
    <item>
        <id>2</id>
        <name>Name 2</name>
    </item>
</items>

When I try convert to  json. I got result as array of item. It's good result.

{
  "items": {
    "item": [
      {
        "id": "1",
        "name": "Name 1"
      },
      {
        "id": "2",
        "name": "Name 2"
      }
    ]
  }
}

 But when my xml have only one item.

<items>
    <item>
        <id>1</id>
        <name>Name 1</name>
    </item>
</items>

I got result as object of item.

{
  "items": {
    "item": {
      "id": "1",
      "name": "Name 1"
    }
  }
}

 But the exactly result I want to get like this.

{
  "items": {
    "item": [
      {
        "id": "1",
        "name": "Name 1"
      }
    ]
  }
}