Question

我试图解析仍然无法做到的数据。

String jsonData = "[{\"id\":\"7\",\"customer_id\":\"1\",\"product_type_id\":\"1\",\"quantity\":\"1\",\"ordered_on\":\"2015-12-01\",\"product_consumption_type\":\"general\",\"reason\":\"\",\"productType\":{\"id\":\"1\",\"name\":\"Full Cream Milk\",\"description\":\"\",\"measurement\":\"\"}},{\"id\":\"3\",\"customer_id\":\"1\",\"product_type_id\":\"1\",\"quantity\":\"0\",\"ordered_on\":\"2015-12-02\",\"product_consumption_type\":\"general\",\"reason\":\"\",\"productType\":{\"id\":\"1\",\"name\":\"Full Cream Milk\",\"description\":\"\",\"measurement\":\"\"}}]";

这是我迄今为止所尝试过的：

try {
    JsonArrayRequest req = new JsonArrayRequest(jsonData, new Response.Listener<JSONArray>() {
        @Override
        public void onResponse(JSONArray response) {
            Log.d(TAG, response.toString());
            try {
                //parsing the value of jsaon array
                for (int i = 0; i < response.length(); i++) {
                    JSONObject details = (JSONObject) response.get(i);
                    String da = details.getString("ordered_on");
                    int qty = Integer.parseInt(details.getString("quantity"));
                    JSONObject prod_det = details.getJSONObject("productType");
                    String na = prod_det.getString("name");
                    ProductType pt = new ProductType(na, qty);
                    Product prod = new Product(da, pt);
                    list.add(prod);
                }
            } catch (JSONException e) {
                e.printStackTrace();
                Toast.makeText(MonthlySummaryActivity.this, "ERROR" + e.getMessage(), Toast.LENGTH_SHORT).show();
                adapter.notifyDataSetChanged();
            }
        }
    }, new Response.ErrorListener() {

        @Override
        public void onErrorResponse(VolleyError error) {
            Toast.makeText(MonthlySummaryActivity.this, "error::" + error.getMessage(), Toast.LENGTH_LONG).show();

        }
    });
} catch (Exception ex) {
    ex.printStackTrace();
}
loading.hide();
return list;

Answer 1

您可以通过两种方式解析JSON数据。

1）创建自己的解析器类。

2）使用库来解析json字符串。

1）如果json字符串很短，那么您应该使用自己的解析器类，如下所示。

String name;

        try {
            JSONArray array = new JSONArray(YOUR JSON STRING);
            JSONObject obj;
            for (int i = 0; i < array.length(); i++) {
                obj = array.getJSONObject(i);
                name = obj.getString(KEY_NAME);
                ......
            }

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

2）使用Gson库。对于Gson，您可以使用this。

Answer 2

希望我能帮助你。

public List<Product> parse(String jsonData) throws JSONException {
    List<Product> productList = new ArrayList();
    JSONArray orderArray = new JSONArray(jsonData);
    for (int i = 0, count = orderArray.length(); i < count; i++) {
        JSONObject productJO = orderArray.getJSONObject(i);

        ProductType productType = new ProductType();
        // parse the product type
        JSONObject productTypeJO = productJO.getJSONObject("productType");
        String typeId = productTypeJO.getString("id");
        String name = productTypeJO.getString("name");
        String description = productTypeJO.getString("description");
        String measurement = productTypeJO.getString("measurement");

        productType.setId(typeId);
        productType.setName(name);
        productType.setDescription(description);
        productType.setMeasurement(measurement);

        // parse the product
        String id = productJO.getString("id");
        String customerId = productJO.getString("customer_id");
        String productTypeId = productJO.getString("product_type_id");
        String quantity = productJO.getString("quantity");
        String orderedOn = productJO.getString("ordered_on");
        String productConsumptionType = productJO.getString("product_consumption_type");
        String reason = productJO.getString("reason");

        Product product = new Product();
        product.setId(id);
        product.setCustomerId(customerId);
        product.setProductTypeId(productTypeId);
        product.setQuantity(quantity);
        product.setOrderedOn(orderedOn);
        product.setProductConsumptionType(productConsumptionType);
        product.setReason(reason);
        product.setProductType(productType);

        productList.add(product);
    }
    return productList;
}

Answer 3

简单高效：使用Googlle的 Gson库

将此内容放入 build.gradle 文件中：implementation 'com.google.code.gson:gson:2.6.2'
现在像这样在 2行中将JSON字符串转换为方便的数据结构，例如HashMap。

Type type = new TypeToken<Map<String, String>>(){}.getType();
Map<String, String> myMap = gson.fromJson(JsonString , type);

稍后谢谢：）

如何在Android中解析此JSON响应？

3 个答案: