android json httpclient使用httpresponse向php服务器发送数据

我正在尝试从和android应用程序向php服务器发送一些数据(两者都由我控制)。

应用程序中的表单上收集了大量数据,这些数据将写入数据库。这都管用。

在我的主代码中,首先我创建了一个jsonobject(在本例中,我在这里对它进行了裁剪):

JSONObject j = new JSONObject();
j.put("engineer", "me");
j.put("date", "today");
j.put("fuel", "full");
j.put("car", "mine");
j.put("distance", "miles");

接下来,我将对象传递给发送,并接收响应:

String url = "http://www.server.com/thisfile.php";
HttpResponse re = HTTPPoster.doPost(url, j);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
{
    Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();
}

HttpPoster类:

public static HttpResponse doPost(String url, JSONObject c) throws ClientProtocolException, IOException 
{
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost request = new HttpPost(url);
    HttpEntity entity;
    StringEntity s = new StringEntity(c.toString());
    s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
    entity = s;
    request.setEntity(entity);
    HttpResponse response;
    response = httpclient.execute(request);
    return response;
}

这将得到一个响应,但服务器将返回一个403禁止的响应。

我试着改变dopost函数一点(这实际上更好一点,正如我所说,我有很多要发送的,基本上是同一个表单的3个不同的数据-所以我创建了3个jsonobjects,每个表单条目一个-条目来自db,而不是我使用的静态示例)。

首先我把电话改了一下:

String url = "http://www.myserver.com/ServiceMatalan.php";
Map<String, String> kvPairs = new HashMap<String, String>();
kvPairs.put("vehicle", j.toString());
// Normally I would pass two more JSONObjects.....
HttpResponse re = HTTPPoster.doPost(url, kvPairs);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
{
    Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();
}

好的,对dopost函数的更改:

public static HttpResponse doPost(String url, Map<String, String> kvPairs) throws ClientProtocolException, IOException 
{
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(url);
    if (kvPairs != null && kvPairs.isEmpty() == false) 
    {
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(kvPairs.size());
        String k, v;
        Iterator<String> itKeys = kvPairs.keySet().iterator();
        while (itKeys.hasNext()) 
        {
            k = itKeys.next();
            v = kvPairs.get(k);
            nameValuePairs.add(new BasicNameValuePair(k, v));
        }             
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    }
    HttpResponse response;
    response = httpclient.execute(httppost);
    return response;
}

好的,这返回一个响应200

int statusCode = re.getStatusLine().getStatusCode();

但是,服务器上接收到的数据无法解析为json字符串。我认为格式不好(这是我第一次使用json):

如果在php文件中,我在$_post['vehicle']上执行echo,会得到以下结果:

{\"date\":\"today\",\"engineer\":\"me\"}

有谁能告诉我哪里出错了,或者有没有更好的方法来实现我的目标?希望上面说的有道理!