求教各位大侠，如何在不用字符截取的方法截取data数组下面的json字符（范围：从data的'['开始到']'）

{
    "code": 200,
    "message": null,
    "data": [
        {
            "ecode": "TmuGsj",
            "terminalAppId": "e128201a907e48acbf54acebcdf9492a",
            "code": "yx_test2",
            "name": "越秀首页2",
            "terminalCode": "Web",
            "description": null,
            "isEnabled": true,
            "appId": "0698bed2-97a4-4cdd-bd88-c46a7bac51e3",
            "versionId": null,
            "images": [],
            "eCode": "TmuGsj",
            "sourceId": null
        },
        {
            "ecode": "TmuGsj",
            "terminalAppId": "28f684070eab45c1bc5dbde54ed9f7fd",
            "code": "yx_test2",
            "name": "越秀首页2",
            "terminalCode": "1",
            "description": null,
            "isEnabled": true,
            "appId": "0698bed2-97a4-4cdd-bd88-c46a7bac51e3",
            "versionId": null,
            "images": [],
            "eCode": "TmuGsj",
            "sourceId": null
        }
    ],
    "total": 0,
    "count": 2
}![图片说明](https://img-ask.csdn.net/upload/201901/01/1546331295_874720.jpg)