"[{"poll_watcher_id":5,"precinct_id":"","candidate_id":1,"count":"123"},
{"poll_watcher_id":5,"precinct_id":"","candidate_id":9},
{"poll_watcher_id":5,"precinct_id":"","candidate_id":6},
{"poll_watcher_id":5,"precinct_id":"","candidate_id":3},
{"poll_watcher_id":5,"precinct_id":"","candidate_id":7},
{"poll_watcher_id":5,"precinct_id":"","candidate_id":4}]"
这个输出只是一个字符串，我想要的是将它转换为对象数组供我使用此输出中的数据