java - 在 Youtube HTTP 请求中指定空格字符

Question

这是我向 Youtube 发出 HTTP 数据请求的代码:

 String apiKey =MY_KEY;
//variable input contains search keyword
    String query = "";
    if(input.contains(" "))
        query = "https://www.googleapis.com/youtube/v3/search?part=snippet&q="+input.replace(" ","+")+"&type=video&videoCaption=closedCaption&key="+apiKey;
    else
        query = "https://www.googleapis.com/youtube/v3/search?part=snippet&q="+input+"&type=video&videoCaption=closedCaption&key="+apiKey;
    try {
        response = makeHTTPRequest.sendGet(query);
    }
    catch (Exception e){
        e.printStackTrace();
    }

    System.out.println("Youtube results : "+response);

所以我试图用 + 符号替换 Electronics City 等关键字中的空格字符。这是错误的吗？应该进行哪些更改才能仅获取电子城的搜索结果，而不是仅获取电子或城市的搜索结果？

目前我正在获取电子城和电子产品的搜索结果。

Answer 1

您需要url encode某些字符。幸运的是，有 URLEncoder你可以通过做类似的事情来使用它，

try {
    String query = String.format("https://www.googleapis.com/" //
                + "youtube/v3/search?part=snippet&q=%s&type=video&" //
                + "videoCaption=closedCaption&key=%s", URLEncoder.encode( //
            input, "UTF-8"), URLEncoder.encode(apiKey, "UTF-8"));
    response = makeHTTPRequest.sendGet(query);
    System.out.printf("Youtube results : %s%n", response);
} catch (Exception e) {
    e.printStackTrace();
}