Question

我有一个关于从自定义JSON响应转换为WP V2 API的WordPress标准JSON响应的问题。

我的自定义json响应看起来像这样 - 它是在

中构建的

 {
  "categories":
  [26]
  0:
  {
    "term_id": 12
    "name": "Android"
    "slug": "android"
    "term_group": 0
    "term_taxonomy_id": 12
    "taxonomy": "category"
    "description": ""
    "parent": 463
    "count": 10
    "filter": "raw"
    "cat_ID": 12
    "category_count": 10
    "category_description": ""
    "cat_name": "Android"
    "category_nicename": "android"
    "category_parent": 463
   }
}

我的代码看起来像这样

    // Preparing volley's json object request
    JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.GET, url, null, new Response.Listener<JSONObject>() {

        @Override
        public void onResponse(JSONObject response) {
            List<Category> categories = new ArrayList<Category>();

            try {
                if (response.has("error")) {
                    String error = response.getString("error");
                    Toast.makeText(getApplicationContext(), error, Toast.LENGTH_LONG).show();
                }else {
                    // Parsing the json response
                    JSONArray entry = response.getJSONArray(TAG_CATEGORIES);

                    // loop through categories and add them to
                    // list
                    for (int i = 0; i < entry.length(); i++) {
                        JSONObject catObj = (JSONObject) entry.get(i);
                        // album id
                        String catID = catObj.getString(TAG_TERM_ID);

                        // album title
                        String catTitle = catObj.getString(TAG_TERM_NAME);

                        Category category = new Category();
                        category.setId(catID);
                        category.setTitle(catTitle);

                        // add album to list
                        categories.add(category);
                    }

WordPress RST API V2的JSON响应如下所示：

[10]
 0:  {
    "id": 12
    "count": 10
    "description": ""
    "link": "https://torbjornzetterlund.com/category/technology/mobile-apps/android/"
    "name": "Android"
    "slug": "android"
    "taxonomy": "category"
    "parent": 463
    "img": false
    "_links": {
       "self": [1]
        0:  {
          "href": "https://torbjornzetterlund.com/wp-json/wp/v2/categories/12"
        }-
         - "collection": [1]
        0:  {
          "href": "https://torbjornzetterlund.com/wp-json/wp/v2/categories"
        }-
        - "about": [1]
        0:  {
          "href": "https://torbjornzetterlund.com/wp-json/wp/v2/taxonomies/category"
        }-
        - "up": [1]
       0:  {
       "embeddable": true
         "href": "https://torbjornzetterlund.com/wp-json/wp/v2/categories/463"
       }-
       -"wp:post_type": [1]
       0:  {
       "href": "https://torbjornzetterlund.com/wp-json/wp/v2/posts?categories=12"
       }-
       - "curies": [1]
       0:  {
        "name": "wp"
        "href": "https://api.w.org/{rel}"
        "templated": true
       }
    }
  }
}

新的JSO响应没有类别类别，因此我不能使用此声明。

     // Parsing the json response
      JSONArray entry = response.getJSONArray(TAG_CATEGORIES);

我找不到任何关于volley库或示例的好文档，我当前的代码从url获取一个对象，然后代码使用response.getJSONArray从对象中获取数组。

如果我无法在对象中识别数组，我需要做什么，我得到的json响应是一个数组，我应该将请求从对象更改为数组。我不确定这一点有点丢失。感谢任何帮助。

Answer 1

您正在使用JsonObjectRequest，适合您的api，但现在它来自您的api的JsonArray。

Volley Toolbox中还有一个JsonArrayRequest。如果您更改了“请求类型”，那么它将起作用。

如果事情不明确，请随时提出。

Answer 2

这是我从JsonObjectRequest更改为JsonArrayRequest后的代码片段的样子 JsonArrayRequest jsonArrReq = new JsonArrayRequest（url，new Response.Listener（）{

        @Override
        public void onResponse(JSONArray response) {
            Log.d(TAG, response.toString());
            List<Category> categories = new ArrayList<Category>();

            for (int i = 0; i < response.length(); i++) {
                try {
                    JSONObject catObj = response.getJSONObject(i);
                    // album id
                    String catID = catObj.getString(TAG_TERM_ID);

                    // album title
                    String catTitle = catObj.getString(TAG_TERM_NAME);

                    Category category = new Category();
                    category.setId(catID);
                    category.setTitle(catTitle);

                    // add album to list
                    categories.add(category);

                    // Store categories in shared pref
                    AppController.getInstance().getPrefManger().storeCategories(categories);

                    // String the main activity
                    Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                    startActivity(intent);

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

            }
        }
    }, new Response.ErrorListener() {

将JSON响应从自定义切换到WP API V2

2 个答案: