Question

以下是运行Android 4.1.2的Android设备中的HTTP POST请求的代码。我有疑问：

此代码在三星设备上运行良好，而在HTC设备上提供“Content-type is not application / json”。

public static String POST（String url，JSONObject obj） { Log.i（“JSONPOSTBEGIN”，“JSON POST的开头”）; InputStream inputStream = null; 字符串结果=“”;

HttpClient httpclient = new DefaultHttpClient();

try {
    HttpPost post = new HttpPost(url);
    post.setHeader("Content-type", "application/json");
    post.setHeader("Accept", "application/json");

    StringEntity se = new StringEntity(obj.toString()); 
    se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
    post.setEntity(se);

    HttpResponse httpResponse = mHhttpclient.execute(post);

    // receive response as inputStream
    inputStream = httpResponse.getEntity().getContent();

    // convert inputstream to string
    if(inputStream != null) {
        result = convertInputStreamToString(inputStream);
    } else
        result = "Did not work!";
} catch (Exception e) {
    Log.d("InputStream", e.getLocalizedMessage());
}
Log.i("JSONPOSTEND", "End of JSON data post methos...");
return result;

}

Answer 1

要使其适用于HTC和所有设备，您必须执行此操作

private static HttpEntity getHttpEntity(String stringEntity) {
    HttpEntity entity = null;
    try {
        entity = new StringEntity(stringEntity, HTTP.UTF_8);
        ((StringEntity) entity).setContentType("application/json;charset=UTF-8");
        ((StringEntity) entity).setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json;charset=UTF-8"));

    } catch (Exception e) {
        Log.d("error creating entity: " + stringEntity);
    }
    return entity;
}

Answer 2

请注意，标题可能是由此

设置的

新的HttpPost（网址）;

并且在添加“内容类型”之类的新标题之前，您可能必须首先调用删除标题（Content-type）....

你需要记录才能把它全部弄清楚。有关详细信息，请参阅接受的ans here

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Android中内容类型的JSON对象的HTTP POST请求问题

2 个答案: