将JSON数组转换为String和JSON再次android

Question

我正在向我创建的本地 php 服务器发送一些帖子数据。我希望帖子数据采用 json 格式，以便以后从 php 中轻松获取这些数据。 使用Namevaluepairs，我将我的 jsonArray 转换为字符串，并在 php 中的文本文件中获得以下结果：

[{"name":"Relojes 2018 Watch Men LIGE Fashion Sport","price":"US $18.19"},{"name":"Relojes 2018 Watch Men LIGE Fashion Sport","price":"US $18.19"},{"name":"Relojes 2018 Watch Men LIGE Fashion Sport","price":"US $18.19"}]

在 android studio 中，我将一些代码格式化为 json，然后在字符串中为：

private void postData() {
        try {
            String postReceiverUrl = "http://192.168.1.104/bot/post.php";
            Log.v(TAG, "postURL: " + postReceiverUrl);

            HttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost(postReceiverUrl);

            List<NameValuePair> nameValuePairs = new ArrayList();

            DatabaseHandler db = new DatabaseHandler(this);
            db.openDB();
            Cursor c = db.getAllDatas();

            JSONObject jsonObject = new JSONObject();
            JSONArray jsonArray = new JSONArray();

            while (c.moveToNext()) {
                String name = c.getString(1);
                String price = c.getString(2);
                //nameValuePairs.add(new BasicNameValuePair("name", name));
                //nameValuePairs.add(new BasicNameValuePair("price", price));

                jsonObject.put("name", name);
                jsonObject.put("price", price);

                jsonArray.put(jsonObject);


                //httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

                //HttpResponse response = httpClient.execute(httpPost);
            }

            //System.out.println("jsonObj" + jsonArray.toString());
            //StringEntity se = new StringEntity( jsonObject.toString());
            //se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
            //httpPost.setEntity(se);

            nameValuePairs.add(new BasicNameValuePair("data", jsonArray.toString()));
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

            HttpResponse response = httpClient.execute(httpPost);

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

在我的接收器 php 代码中：

<?php

$name=$_POST["data"]; 
//$price = $_POST["price"];

//$result = '<br>' . $name . ' ' . $price;


$result = $name;

$filename="submitted-msg.txt";
file_put_contents($filename,$result,FILE_APPEND);

$androidmessages=file_get_contents($filename);

echo $androidmessages;

?>

现在我的疑问是，我可以像以前那样将字符串转换为 json 数组吗？或者可以在php中做这样的事情吗？要做，怎么做？ 提前致谢！

Answer 1

使用带有“JSON_UNESCAPED_SLASHES”标志的 json_encode 来删除反斜杠。

json_encode($androidmessages, JSON_UNESCAPED_SLASHES);

或者你也可以使用stripslashes

stripslashes(json_encode($androidmessages));

你会得到响应的json格式。

[{"name":"Relojes 2018 Watch Men LIGE Fashion Sport","price":"US $18.19"},{"name":"Relojes 2018 Watch Men LIGE Fashion Sport","price":"US $18.19"},{"name":"Relojes 2018 Watch Men LIGE Fashion Sport","price":"US $18.19"}]

Answer 2

试试这个：

echo json_encode($androidmessages);