JSON转换为字符串格式

Question

我有一个像将JSON数据转换成字符串的要求，请你帮我解决。

来自服务的我的JSON数据：

{
    "chathistory": [
        {
            "broadcastId": "123",
            "caption": "",
            "chattype": "CHAT_SINGLE",
            "delivered": "2015-03-23T10:20",
            "duration": "0"
        },
        {
            "broadcastId": "124",
            "caption": "",
            "chattype": "CHAT_SINGLE",
            "delivered": "2015-03-23T10:20",
            "duration": "5"
        }
    ],
    "status": "success"
}

我需要将其转换为以下格式

chathistory: [
    {
        broadcastId: '123',
        caption: '',
        chattype: 'CHAT_SINGLE',
        delivered: '2015-03-23T10: 20',
        duration: '0'
    },
    {
        broadcastId: '124',
        caption: '',
        chattype: 'CHAT_SINGLE',
        delivered: '2015-03-23T10: 30',
        duration: '5'
    }
]

谢谢， 斯里达尔