android - 在 Get HttpURLConnection 请求中获取 POST 响应

Question

我不知道为什么，但我在执行 GET 请求时收到了 POST 响应，这是我的方法:

public String performGetBrandCall(String requestURL) {

    URL url;
    String response = "";
    try {
        url = new URL(requestURL);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Authorization", "Bearer " + MainActivity.TOKEN);
        conn.setDoInput(true);
        conn.setDoOutput(true);

        int responseCode=conn.getResponseCode();
        Log.d(TAG, "Response Code: " + responseCode);


        if (responseCode == HttpsURLConnection.HTTP_OK || responseCode == HttpsURLConnection.HTTP_CREATED) {
            String line;
            BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
            while ((line=br.readLine()) != null) {
                response+=line;
            }
        } else {
            if (responseCode >= 400 && responseCode < 500){
                String line;
                BufferedReader br=new BufferedReader(new InputStreamReader(conn.getErrorStream()));
                while ((line=br.readLine()) != null) {
                    response+=line;
                }
            } else {
                response="";
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return response;
} 

我正在使用 setRequestProperty 添加 header ，这是我为请求设置的唯一“参数”，但我收到了帖子响应，但我不知道为什么。有什么建议吗？

Answer 1

根据 Android 开发者指南:

SetDoOutput 设置指示此 URLConnection 是否允许输出的标志。建立连接后无法设置。

仅当您使用 POST 请求时才必须调用此方法...如果您正在执行 GET 请求并且 SetDoOutput 为真，则您的请求将是 POST 请求。

我只删除了那一行，现在我得到了我的 GET 响应:

public String performGetCall(String requestURL) {

    URL url;
    String response = "";
    try {
        url = new URL(requestURL);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Authorization", "Bearer "+ MainActivity.TOKEN);
        conn.setDoInput(true);

        int responseCode=conn.getResponseCode();
        Log.d(TAG, "Response Code: "+responseCode);

        if (responseCode == HttpsURLConnection.HTTP_OK || responseCode == HttpsURLConnection.HTTP_CREATED) {
            String line;
            BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
            while ((line=br.readLine()) != null) {
                response+=line;
            }
        } else {
            if (responseCode >= 400 && responseCode < 500){
                String line;
                BufferedReader br=new BufferedReader(new InputStreamReader(conn.getErrorStream()));
                while ((line=br.readLine()) != null) {
                    response+=line;
                }
            } else {
                response="";
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return response;
}