我正在使用谷歌自定义搜索API搜索图像。当我请求图像时，搜索结果总是为0。我正在按照下面链接中的文档进行操作:
https://developers.google.com/custom-search/json-api/v1/reference/cse/list
根据文档，通过指定searchType=images，API只会寻找图片。下面是我的URL样式：
结果如下所示：
{
"kind": "customsearch#search",
"url": {
"type": "application/json",
"template": "https://www.googleapis.com/customsearch/v1?q={searchTerms}&num={count?}&start={startIndex?}&lr={language?}&safe={safe?}&cx={cx?}&cref={cref?}&sort={sort?}&filter={filter?}&gl={gl?}&cr={cr?}&googlehost={googleHost?}&c2coff={disableCnTwTranslation?}&hq={hq?}&hl={hl?}&siteSearch={siteSearch?}&siteSearchFilter={siteSearchFilter?}&exactTerms={exactTerms?}&excludeTerms={excludeTerms?}&linkSite={linkSite?}&orTerms={orTerms?}&relatedSite={relatedSite?}&dateRestrict={dateRestrict?}&lowRange={lowRange?}&highRange={highRange?}&searchType={searchType}&fileType={fileType?}&rights={rights?}&imgSize={imgSize?}&imgType={imgType?}&imgColorType={imgColorType?}&imgDominantColor={imgDominantColor?}&alt=json"
},
"queries": {
"request": [
{
"title": "Google Custom Search - cars",
"totalResults": "0",
"searchTerms": "cars",
"count": 10,
"inputEncoding": "utf8",
"outputEncoding": "utf8",
"safe": "off",
"cx": "017576662512468239146:omuauf_lfve",
"searchType": "image"
}
]
},
"searchInformation": {
"searchTime": 0.049329,
"formattedSearchTime": "0.05",
"totalResults": "0",
"formattedTotalResults": "0"
}
}
如果我从请求中删除searchType，那么我会收到以网页形式返回的结果。这里出了什么问题？