Swift WKWebView POST传参数

    func postRequest(urlStr: String,body: String) -> URLRequest? {
        let method: HTTPMethod = LoginSessionManager.shared.isLogin() ? .post : .get
        let postData = APIUtils.getAuthKey() ?? ""
        guard var request = try? URLRequest.init(url: urlStr, method: method) else {
            return nil
        }
        request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
        request.httpBody = Data(postData.utf8)
        return request
    }

接下来使用WKWebView发起请求就可以了

var request = self.postRequest(urlStr: urlString, body: APIUtils.getAuthKey() ?? "")
                request?.cachePolicy = URLRequest.CachePolicy.reloadIgnoringCacheData
                if (request != nil) {
                    self.webView.load(request!)
                }

APIUtils.getAuthKey() ?? "" 是要传到服务器的参数
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type") 这句话比较重要, 没有的话容易失败.