Question

我正在尝试制作一个程序，通过Web API检查公告 - 这连接到远程服务器并读取页面上的JSON - 我无法测试我的代码，因为服务器尚未生效。这会有效吗？是正确的方法吗？

public class AnnouncementChecker implements Runnable{

private final String announcementsURL = "REDACTED";
private String lastAnnouncement = "";

@Override
public void run(){
    try {
        URL url = new URL(announcementsURL);
        HttpURLConnection http = (HttpURLConnection) url.openConnection();
        http.setRequestMethod("conditional GET");
        http.setRequestProperty("Connection", "keep-alive");
        http.setUseCaches(true);
        http.setAllowUserInteraction(false);
        if (lastAnnouncement != ""){
            http.setRequestProperty("If-Modified-Since", lastAnnouncement);
        }
        http.setConnectTimeout(10);
        http.connect();
        int status = http.getResponseCode();
        if (status == 304 || (status == 200 && lastAnnouncement == "")){
            lastAnnouncement = http.getHeaderField("Last-Modified");
            BufferedReader br = new BufferedReader(new InputStreamReader(http.getInputStream()));
            StringBuilder sb = new StringBuilder();
            String line;
            while ((line = br.readLine()) != null) {
                sb.append(line+"\n");
            }
            br.close();
            String json = sb.toString();
            JSONParser parser = new JSONParser();
            JSONObject jsonResponse = (JSONObject) parser.parse(json);
            //String announcement = (String) jsonResponse.get("message");
            //TODO What to do with announcement...
        }
        http.getInputStream().close();
        http.disconnect();

    } catch (IOException | ParseException e) {
        e.printStackTrace();
    }
}

}

Answer 1

我建议设置某种类型的测试，尽管服务器不可用。这将为您提供问题的答案，当您对代码进行更改并更改业务需求时，测试将永远存在，以保护您。

为了帮助您，我建议拆分返回响应的代码和执行解析的代码。这样，您可以独立于进行HTTP连接的部分来测试解析。

如果你不知道怎么做，那么我很乐意为你发一个例子。

如何正确检查JSON更新 - Java

1 个答案: