请求：
{OKAYAPI_API_HOST}/?s=App.Scws.GetWords&text=我爱你中国&app_key={你的app_key}&sign={动态签名}

返回：
{
    "ret": 200,
    "data": {
        "err_code": 0,
        "err_msg": "",
        "words": [
        {
            "word": "我爱你",
            "off": 0,
            "len": 9,
            "idf": 4.929999828338623,
            "attr": "n"
        },
        {
            "word": "中国",
            "off": 9,
            "len": 6,
            "idf": 6.260000228881836,
            "attr": "ns"
        }
        ]
    },
    "msg": "小白开放接口：App.Scws.GetWords"
}