java - 如何在Java中的GET方法的HttpRequest中添加 header

Question

我必须传递一个 token 作为每个 GET 请求验证的一部分才能访问 RESTful Web 服务。下面是我使用它访问 REST api 的代码:

public static String httpGet(String urlStr, String[] paramName, String[] paramVal) throws Exception {
        URL url = new URL(urlStr);
        HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setDoOutput(true);
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 

        OutputStream out = conn.getOutputStream();
        Writer writer = new OutputStreamWriter(out, "UTF-8");
        for (int i = 0; i < paramName.length; i++) {
            writer.write(paramName[i]);
            writer.write("=");
            writer.write(URLEncoder.encode(paramVal[i], "UTF-8"));
            writer.write("&");
        }
        writer.close();
        out.close();

        if (conn.getResponseCode() != 200) {
            System.out.println("Response code: "+conn.getResponseCode());
            throw new IOException(conn.getResponseMessage());
        }

        BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = rd.readLine()) != null) {
            sb.append(line);
        }
        rd.close();

        conn.disconnect();
        return sb.toString();
    }

我看不到任何为 HttpsURLConnection 提供的设置 header conn.setHeader() 的方法。它应该类似于 X-Cookie: token={token}; 请帮我找到一种设置 header 的方法。

Answer 1

您可以使用:

conn.addRequestProperty("X-Cookie", "token={token}");

或setRequestProperty()也有效