使用java从数组中过滤id值

Question

I am trying to filter the id value which matches a certain variable and return the id

result = {
    "drives": [{
        "id": "0AEz3mOk9PVA",
        "name": "Dev2020-10"
    }, {
        "id": "0AMEH9PVA",
        "name": "Dev2020-11"
    }, {
        "id": "0AAPUk9PVA",
        "name": "Dev2020-12"
    }
]

folderName = Dev2020-12

code:

if(result.toString().contains(folderName)) {                        
    return result; 
} else {
    // ...
}

I need to match the value in the result and return only the id of the matched drive name.

expected output:

"0AAPUk9PVA"

How can i achieve this

Answer 1

As soon as result appears to be com.google.api.services.drive.model.DriveList , you can try the following:

import com.google.api.services.drive.model.Drive;

Optional<String> folderNameDriveId = result.getDrives().stream()
    .filter(drive -> folderName.equals(drive.getName()))
    .map(Drive::getId)
    .findFirst();

Answer 2

result.stream().filter(i -> i.get("name").equals(foderName)).findAny().orElse(null)

过滤器调用中的检查将取决于您在 ArrayList 中的对象类型