Android错误解析后响应org.json.jsonException：输入结束在字符0处

Question

我正在编写一个Android应用程序，可以解析从PHP网页返回的JSON，并且在Logcat中不断得到“org.JSON.jsonException：在字符0处结束输入”。代码如下：

public class HttpConnect {
    HttpClient httpClient = new DefaultHttpClient();
    final String url = "http://foo/bar/handler.php";
    HttpPost httpPost = new HttpPost(url);
    HttpParams httpParams = new BasicHttpParams();
    HttpResponse httpResponse;
    List<NameValuePair> params = new ArrayList<NameValuePair>();
    JSONObject resultJson;
    boolean status;

    public boolean sendJson(String value) {
        try {
        params.add(new BasicNameValuePair("jsonString", URLEncoder.encode(
                value, "utf-8")));
        httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
        httpResponse = httpClient.execute(httpPost);
        if (httpResponse.getStatusLine().getStatusCode() == 200) {
            String result = EntityUtils.toString(httpResponse.getEntity());
            resultJson = new JSONObject(result);
        }
        if (resultJson.getString("success") == "true")
            status = true;
        else
            status = false;
        } catch (Exception e) {
        e.printStackTrace();
        }
        return status;
    }
    //...
}

$arr = array('success' => 'true', 'status' => 'RegSuccess', 'userid' => $userid, 'authkey' => $authKey);
$jsonString = json_encode($arr);
echo $jsonString;

{
    "success": "true",
    "status": "RegSuccess",
    "userid": "2",
    "authkey": "OvOWwCjIXoYtbjsIdTVI"
}

感谢任何帮助：）

Answer 1

我的建议是使用凌空网络操作。它是为了更快更好的网络。

它可以很好地处理各种Json请求和字符串请求。