安卓4.0 ICS转向HttpURLConnection的GET请求到POST请求 [英] Android 4.0 ICS turning HttpURLConnection GET requests into POST requests

问题描述

我的Galaxy Nexus的今天到了，我做的第一件事就是加载我的应用程序上，所以我可以证明它给我的朋友。它的功能包括部分进口RSS订阅，从谷歌阅读器。然而，在尝试此，我得到405不允许的方法错误。

My Galaxy Nexus arrived today, and one of the first things I did was to load my app onto it so I could demonstrate it to my friends. Part of its functionality involves importing RSS Feeds from Google Reader. However, upon trying this, I was getting 405 Method Not Allowed errors.

这个问题是冰淇淋三明治专用。在code我已经连接正常工作的姜饼和蜂窝。我跟踪的错误下来的那一刻建立连接，当GET请求神奇地变成了POST请求。

This problem is Ice Cream Sandwich-specific. The code I've attached works fine on Gingerbread and Honeycomb. I've traced the error down to the moment the connection is made, when the GET request magically turns into a POST request.

/**
 * Get the authentication token from Google
 * @param auth The Auth Key generated in getAuth()
 * @return The authentication token
 */
private String getToken(String auth) {
    final String tokenAddress = "https://www.google.com/reader/api/0/token";
    String response = "";
    URL tokenUrl;

    try {
        tokenUrl = new URL(tokenAddress);
        HttpURLConnection connection = (HttpURLConnection) tokenUrl.openConnection();

        connection.setRequestMethod("GET");
        connection.addRequestProperty("Authorization", "GoogleLogin auth=" + auth);
        connection.setRequestProperty("Content-Type","application/x-www-form-urlendcoded");
        connection.setUseCaches(false);
        connection.setDoOutput(true);
        Log.d(TAG, "Initial method: " + connection.getRequestMethod()); // Still GET at this point

        try {
            connection.connect();
            Log.d(TAG, "Connected. Method is: " + connection.getRequestMethod());  // Has now turned into POST, causing the 405 error
            InputStream in = new BufferedInputStream(connection.getInputStream());
            response = convertStreamToString(in);
            connection.disconnect();
            return response;

        }
        catch (Exception e) {
            Log.d(TAG, "Something bad happened, response code was " + connection.getResponseCode()); // Error 405
            Log.d(TAG, "Method was " + connection.getRequestMethod()); // POST again
            Log.d(TAG, "Auth string was " + auth);
            e.printStackTrace();
            connection.disconnect();
            return null;
        }
    }
    catch(Exception e) {
        // Stuff
        Log.d(TAG, "Something bad happened.");
        e.printStackTrace();
        return null;
    }
}

这有什么可能会造成这个问题？难道这个功能会更好codeD，以避免这个问题？

Is there anything that could be causing this problem? Could this function be better coded to avoid this problem?

在预先感谢。

推荐答案

此行为在 Android开发人员：HttpURLConnection的

HttpURLConnection的默认使用GET方法。它将使用后，如果   setDoOutput（真）被调用。

HttpURLConnection uses the GET method by default. It will use POST if setDoOutput(true) has been called.

有什么奇怪的是，虽然这并没有实际上是直到4.0的行为，所以我会想象它会破坏许多现有的应用程序发布的

What's strange though is that this has not actually been the behaviour until 4.0, so I would imagine it's going to break many existing published apps.

还有更多关于这个在 Android 4.0的轮流进入POST 。

这篇关于安卓4.0 ICS转向HttpURLConnection的GET请求到POST请求的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！