获取地区

{
    "code": 1,
    "msg": "获取成功",
    "data": [{
                "value": 100000,
                "pid": 0,
                "label": "中国",
                "children": [{
                        "value": 110000,
                        "pid": 100000,
                        "label": "北京",
                        "children": [{
                            "value": 110100,
                            "pid": 110000,
                            "label": "北京市",
                            "children": [{
                                    "value": 110101,
                                    "pid": 110100,
                                    "label": "东城区",
                                    "children": []
                                },
                                {
                                    "value": 110102,
                                    "pid": 110100,
                                    "label": "西城区",
                                    "children": []
                                },
                                {
                                    "value": 110105,
                                    "pid": 110100,
                                    "label": "朝阳区",
                                    "children": []
                                },
                                {
                                    "value": 110106,
                                    "pid": 110100,
                                    "label": "丰台区",
                                    "children": []
                                },
                                {
                                    "value": 110107,
                                    "pid": 110100,
                                    "label": "石景山区",
                                    "children": []
                                },
                                {
                                    "value": 110108,
                                    "pid": 110100,
                                    "label": "海淀区",
                                    "children": []
                                },
                                {
                                    "value": 110109,
                                    "pid": 110100,
                                    "label": "门头沟区",
                                    "children": []
                                },
                                {
                                    "value": 110111,
                                    "pid": 110100,
                                    "label": "房山区",
                                    "children": []
                                },
                                {
                                    "value": 110112,
                                    "pid": 110100,
                                    "label": "通州区",
                                    "children": []
                                },
                                {
                                    "value": 110113,
                                    "pid": 110100,
                                    "label": "顺义区",
                                    "children": []
                                },
                                {
                                    "value": 110114,
                                    "pid": 110100,
                                    "label": "昌平区",
                                    "children": []
                                },
                                {
                                    "value": 110115,
                                    "pid": 110100,
                                    "label": "大兴区",
                                    "children": []
                                },
                                {
                                    "value": 110116,
                                    "pid": 110100,
                                    "label": "怀柔区",
                                    "children": []
                                },
                                {
                                    "value": 110117,
                                    "pid": 110100,
                                    "label": "平谷区",
                                    "children": []
                                },
                                {
                                    "value": 110118,
                                    "pid": 110100,
                                    "label": "密云区",
                                    "children": []
                                },
                                {
                                    "value": 110119,
                                    "pid": 110100,
                                    "label": "延庆区",
                                    "children": []
                                },
                                {
                                    "value": 110120,
                                    "pid": 110100,
                                    "label": "中关村科技园区",
                                    "children": []
                                }
                            ]
                        }]
                    }

                }
            }