从 Java 中的 Curl Post 请求中获取 Json / Resonse 正文

阿曼阿加瓦尔

这是我编写的发送 POST 请求以发送电子邮件的方法。我能够发送电子邮件并获得响应代码 200 Ok。但我不知道如何获取 JSON 响应并将其转换为对象。有人可以告诉我该怎么做吗？

public void sendEmail() {
        try {
            URL url = new URL("https://mandrillapp.com/api/1.0/messages/send");

            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setRequestProperty("Content-Type", "application/json");

            String data =
                    "{\"key\": \"" + mailchimpApiKey + "\", " +
                            "\"message\": {" +
                            "\"from_email\": \"[email protected]\", " +
                            "\"subject\": \"Hello World\", " +
                            "\"text\": \"Welcome to Mailchimp Transactional!\", " +
                            "\"to\": [{ \"email\": \"[email protected]\", \"type\": \"to\" }]}}";

            byte[] out = data.getBytes(StandardCharsets.UTF_8);

            OutputStream stream = httpURLConnection.getOutputStream();
            stream.write(out);

            System.out.println(httpURLConnection.getResponseCode() + " " + httpURLConnection.getResponseMessage());

            httpURLConnection.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

mdre

基本搜索显示：https ://www.baeldung.com/httpurlconnection-post#8-read-the-response-from-input-stream

try(BufferedReader br = new BufferedReader(
  new InputStreamReader(con.getInputStream(), "utf-8"))) {
    StringBuilder response = new StringBuilder();
    String responseLine = null;
    while ((responseLine = br.readLine()) != null) {
        response.append(responseLine.trim());
    }
    System.out.println(response.toString());
}

如果响应是 JSON 格式，请使用任何第三方 JSON 解析器，例如 Jackson 库、Gson 或 org.json 来解析响应。

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