获取当前站点对象。如果传递subDir参数，则通过子目录查询当前站点；否则通过当前域名获取对应站点对象，无法获取则返回默认站点

{
    "id": 0,
    "parentId": 0,
    "orgId": 0,
    "modelId": 0,
    "name": "string",
    "description": "string",
    "protocol": "string",
    "domain": "string",
    "subDir": "string",
    "theme": "string",
    "mobileTheme": "string",
    "pageSize": 0,
    "logo": "string",
    "seoTitle": "string",
    "seoKeywords": "string",
    "seoDescription": "string",
    "staticFile": "string",
    "mobileStaticFile": "string",
    "editorSettings": "string",
    "status": 0,
    "depth": 0,
    "order": 0,
    "views": 0,
    "selfViews": 0,
    "todayViews": 0,
    "yesterdayViews": 0,
    "maxViews": 0,
    "maxDate": "2019-08-24T14:15:22Z",
    "mainsJson": "string",
    "clobsJson": "string",
    "customs": {
        "property1": {},
        "property2": {}
    },
    "watermark": {
        "enabled": true,
        "overlay": "string",
        "position": 0,
        "dissolve": 0,
        "minWidth": 0,
        "minHeight": 0
    },
    "html": {
        "enabled": true,
        "auto": true,
        "listPages": 0,
        "channel": "string",
        "article": "string",
        "enabledAndAuto": true
    },
    "messageBoard": {
        "enabled": true,
        "loginRequired": true
    },
    "editor": {
        "property1": {},
        "property2": {}
    },
    "copyFromId": 0,
    "copyData": [
        "string"
    ],
    "hasChildren": true,
    "parent": {},
    "org": {
        "id": 0,
        "parentId": 0,
        "name": "string",
        "phone": "string",
        "address": "string",
        "contacts": "string",
        "depth": 0,
        "order": 0,
        "hasChildren": true,
        "names": [
            "string"
        ],
        "paths": [
            {}
        ]
    },
    "model": {
        "id": 0,
        "siteId": 0,
        "name": "string",
        "type": "string",
        "scope": 0,
        "order": 0,
        "mains": "string",
        "asides": "string",
        "customs": "string"
    },
    "enabled": true,
    "url": "string",
    "names": [
        "string"
    ],
    "template": "string",
    "title": "string",
    "staticBase": "string",
    "paths": [
        {}
    ],
    "disabled": true,
    "htmlEnabled": true,
    "filesPath": "string",
    "mobileStaticUrl": "string",
    "api": "string",
    "dy": "string",
    "dynamicUrl": "string",
    "staticUrl": "string",
    "normalStaticUrl": "string",
    "targetBlank": true
}