Java HTTPPost未发送正确的值

Java HTTPPost未发送正确的值,java,php,android,http-post,Java,Php,Android,Http Post,这是今天关于Android的第三个问题,这开始让人尴尬了。我正在尝试向此PHP页面发送HTTP POST请求,我正在尝试从MySQL数据库检索相册信息: <?php if (isset($_POST['req']) && $_POST['req'] != '') { $request = $_POST['req']; // Including the handler for the database require_once 'include/d

这是今天关于Android的第三个问题,这开始让人尴尬了。我正在尝试向此PHP页面发送HTTP POST请求,我正在尝试从MySQL数据库检索相册信息:

<?php

if (isset($_POST['req']) && $_POST['req'] != '') {
    $request = $_POST['req'];

    // Including the handler for the database
    require_once 'include/db_functions.php';
    $db = new db_functions();

    // Array for response
    $response = array("req" => $request, "success" => 0, "error" => 0);

    // Check the request type

    // Obtains a list of medias for the listview.
    if ($request == 'listemedias'){
        $mediaList = $db->getMediasList();
        // Parse the media list
        for($i = 0; $i < count($mediaList); $i++){
            $response["mediaList"][$i]["id"] = $mediaList[$i]['idmedia'];
            $response["mediaList"][$i]["titre"] = $mediaList[$i]['titre'];
            $response["mediaList"][$i]["annee"] = $mediaList[$i]['annee'];
            $response["mediaList"][$i]["duree"] = $mediaList[$i]['duree'];
            $response["mediaList"][$i]["jaquette"] = $mediaList[$i]['jaquette'];
        }
        $response["success"] = 1;
        echo json_encode($response);
        exit;
    }

    // Obtains specific informations for a specific media.
    if ($request == 'media') {
        if (isset($_POST['no']) && $_POST['no'] != '') {
            $no = $_POST['no'];
            $media = $db->getMedia($no);
            if ($media != false){
                $response["success"] = 1;
                $response["media"]["id"] = $media["idmedia"];
                $response["media"]["titre"] = $media["titre"];
                $response["media"]["annee"] = $media["annee"];
                $response["media"]["duree"] = $media["duree"];
                $response["media"]["jaquette"] = $media["jaquette"];
                $response["media"]["genre"] = $media["nomgenre"];
                $response["media"]["editeur"] = $media["nomediteur"];
                $response["media"]["collection"] = $media["nomcollection"];
            } else {
                echo 'Media does not exist';
                exit;
            }
            echo json_encode($response);
            exit;
        } else {
            echo 'Access Denied';
            exit;
        }
    }


} else {
    echo 'Access Denied';
    exit;
}
?>

问题是,我只能从HTTP请求中得到“Access Deniedn”(是的,带有n)作为回复。以下是我的android java代码:

以下是为请求设置参数的函数:

public JSONObject getMediaList(){
        List<NameValuePair> params = new ArrayList<NameValuePair>(1);

        // We add the request name to get all medias from the API service
        params.add(new BasicNameValuePair("req","listemedias"));

        // We get the JSON Object from the API service
        JSONObject json = jsonParser.getJSONFromUrl(url, params);

        return json;
    }
公共JSONObject getMediaList(){ 列表参数=新的ArrayList(1); //我们添加请求名称以从API服务获取所有媒体 添加(新的BasicNameValuePair(“req”、“ListMedias”); //我们从API服务获取JSON对象 JSONObject json=jsonParser.getJSONFromUrl(url,参数); 返回json; } 下面是执行实际请求的JSONParser类的getJSONFromURL函数:

public JSONObject getJSONFromUrl (String url, List<NameValuePair> params) {

        // Making HTTP request
        try {
            // defaultHttpClient
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(url);
            httpPost.setEntity(new UrlEncodedFormEntity(params));

            HttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            is = httpEntity.getContent();

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    is, "iso-8859-1"), 8);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line + "n");
            }
            is.close();
            json = sb.toString();
            Log.e("JSON", json);
        } catch (Exception e) {
            Log.e("Buffer Error", "Error converting result " + e.toString());
        }

        // try parse the string to a JSON object
        try {
            jObj = new JSONObject(json);            
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        // return JSON String
        return jObj;

    }
publicJSONObject getJSONFromUrl(字符串url,列表参数){
//发出HTTP请求
试一试{
//defaultHttpClient
DefaultHttpClient httpClient=新的DefaultHttpClient();
HttpPost HttpPost=新的HttpPost(url);
setEntity(新的UrlEncodedFormEntity(参数));
HttpResponse HttpResponse=httpClient.execute(httpPost);
HttpEntity HttpEntity=httpResponse.getEntity();
is=httpEntity.getContent();
}捕获(不支持的编码异常e){
e、 printStackTrace();
}捕获(客户端协议例外e){
e、 printStackTrace();
}捕获(IOE异常){
e、 printStackTrace();
}
试一试{
BufferedReader reader=新的BufferedReader(新的InputStreamReader(
is,“iso-8859-1”),8);
StringBuilder sb=新的StringBuilder();
字符串行=null;
而((line=reader.readLine())!=null){
sb.附加(第+行“n”);
}
is.close();
json=sb.toString();
Log.e(“JSON”,JSON);
}捕获(例外e){
Log.e(“缓冲区错误”,“错误转换结果”+e.toString());
}
//尝试将字符串解析为JSON对象
试一试{
jObj=新的JSONObject(json);
}捕获(JSONException e){
Log.e(“JSON解析器”,“错误解析数据”+e.toString());
}
//返回JSON字符串
返回jObj;
}
我很抱歉发布了这篇文章,我是Android新手,几天来我一直在努力想办法解决这个问题

编辑:经过多次调试后,参数确实包含“req”作为名称和与之关联的“ListMedias”。为什么它根本不起作用?这是一个编码问题吗?是否有任何方法可以验证为请求发送的标头


EDIT2:经过一些额外的修补,我就是想不出来,我要认输了。有没有其他方法可以让我使用呢?

你可以发布日志吗?请在php文件的开头给echo$\u post。它将为您提供发布的参数。试试这个。