groovy - Cannot access JSonSlurper array objects via loop

Question

I am trying to access Jira Rest API using Groovy. (And this question is not Jira-specific.)

There is no problem on connection; I can get the JSON data that I want.

When I tried to iterate over a JSON array in the data; I failed. However, if I tried to access the JSON array's value at specified index; I can get the data.

String out_json = get("https://jiraserver.intra/rest/api/2/search/?jql=project%20%3D%20TEST%20ORDER%20BY%20key%20ASC&startAt=0&maxResults=1", authString); // It returns the json data
def out = new JsonSlurper().parseText(out_json)

def key = out.issues[0].key // I can access the key this way

for(int i = 0; i < size; i++){
    out.issues[i].key // And it returns null
    break;
}

For the one who doesn't know the JSON, it is something like:

{
    "total": 2,
    
    "issues": [
        {
            "key": "TEST-1"
            -- some other key-values --
        },
        {
            "key": "TEST-2"
            -- some other key-values --
        }
    ]
}

What am I missing?

Answer 1

等待大神答复