在 Java javafx 中为 Web 视图控制器提供 url

Question

我正在尝试使用 JavaFX 应用向 Google API 发送请求。我正在使用 Google 道路 API。问题是我要求用户导入一个带坐标的 excel 文档，该文档可以包含尽可能多的纬度和经度数据，但是 Google API 只允许少于 100 对坐标。那么我如何提供数组列表中从索引位置 0 到 99 的数据，并在按下按钮时提供从 100 到 199 或更小的下一组坐标。我目前能够提供 arraylist.sublist(0to99) 并返回 json 响应。提前致谢

Answer 1

    //On fx button click the following happens
    @FXML public void loadURL(Event event){ 
    co_ordinates = Excel_Exchange.value;
    if(!next){
        limit = (int)co_ordinates.size();
        next = true;//some global boolean variable so that this is done once
    }
    if(co_ordinates.size()<100){
        StringBuilder urlCaseOne = new StringBuilder(co_ordinates.subList(start, co_ordinates.size()).toString().replaceAll("[\[\]]","").replaceAll(", ",""));
        url_link = "https://roads.googleapis.com/v1/snapToRoads?path="+urlCaseOne.deleteCharAt(urlCaseOne.length()-1)+"&interpolate=true&key="+API_KEY;
    }else{
        if(limit>100){
            StringBuilder urlCaseTwo = new StringBuilder(co_ordinates.subList(start, end).toString().replaceAll("[\[\]]","").replaceAll(", ",""));
            url_link = "https://roads.googleapis.com/v1/snapToRoads?path="+urlCaseTwo.deleteCharAt(urlCaseTwo.length()-1)+"&interpolate=true&key="+API_KEY;
            //System.out.println("l"+limit+" s"+start+" e"+end);
            start+=100; end+=100; limit-=100;
        }else if(limit<100){
            StringBuilder urlCaseThree = new StringBuilder(co_ordinates.subList(start, co_ordinates.size()).toString().replaceAll("[\[\]]","").replaceAll(", ",""));
            url_link = "https://roads.googleapis.com/v1/snapToRoads?path="+urlCaseThree.deleteCharAt(urlCaseThree.length()-1)+"&interpolate=true&key="+API_KEY;
        }
    }
    //System.out.println(co_ordinates.size());
    //System.out.println(url_link);
    //System.out.println(co_ordinates.toString().lastIndexOf("|"));
    //System.out.println(co_ordinates.subList(0, 99).size());
    startLoadState.apply();
    this.engine.load(url_link);
}// i have another method that navigates back by to the first url

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