java - 哪些参数最适合在 android studio 上发布包含 JSONArray 的 JSONObjetc？

Question

构建一个新的 Android 项目，已尝试使用改造从 woocoomerce REST API Web 服务将数据写入 JSON 中。

这些是用于包含要发送的数据的 POJO 类，请注意 lineitem 包含在 Pedido 内:

public class Pedido {

@SerializedName("id")
@Expose
private int id;
@SerializedName("status")
@Expose
private String status;
@SerializedName("date_created")
@Expose
private String dateCreated;
private String dateModified;
private int customerId;
private String total;
@SerializedName("customer_note")
@Expose
private String customerNote;
private String dateCompleted;
private String datePaid;
@SerializedName("line_items")
@Expose
private ArrayList<LineItem> line_items;


public int getId() {
    return id;
}


public void setId(int id) {
    this.id = id;
}


public String getStatus() {
    return status;
}


public void setStatus(String status) {
    this.status = status;
}


public String getDateCreated() {
    return dateCreated;
}


public void setDateCreated(String dateCreated) {
    this.dateCreated = dateCreated;
}


public String getDateModified() {
    return dateModified;
}


public void setDateModified(String dateModified) {
    this.dateModified = dateModified;
}


public int getCustomerId() {
    return customerId;
}


public void setCustomerId(int customerId) {
    this.customerId = customerId;
}


public String getTotal() {
    return total;
}


public void setTotal(String total) {
    this.total = total;
}


public String getCustomerNote() {
    return customerNote;
}


public void setCustomerNote(String customerNote) {
    this.customerNote = customerNote;
}


public String getDateCompleted() {
    return dateCompleted;
}


public void setDateCompleted(String dateCompleted) {
    this.dateCompleted = dateCompleted;
}


public String getDatePaid() {
    return datePaid;
}


public void setDatePaid(String datePaid) {
    this.datePaid = datePaid;
}


public List<LineItem> getLineItems() {
    return line_items;
}


public void setLineItems(ArrayList<LineItem> line_items) {
    this.line_items = line_items;
}

}

public class LineItem {

@SerializedName("id")
@Expose
private int id;
private String itemname;
@SerializedName("quantity")
@Expose
private int quantity;
private double price;
private String total;

public int getidprod(){return id;}

public void setIdprod(int id){this.id = id;}

public String getitemname(){return itemname;}

public int getQuantity(){return quantity;}

public void setQuantity(int quantity){this.quantity = quantity;}

public double getPrice(){return price;}

public String gettotal(){return total;}

}

接下来，用于 POST 数据的 Endpoint 方法(这就是问题所在)，它仅创建空寄存器

@POST("orders"+ ConstantesAPI.ACCES_TOKEN)
Call<Pedido> Crearpedido(@Body Pedido pedido);

最后，这是方法实例的调用方式:

pedido.setCustomerId(id_cliente_np);
    pedido.setDateCreated(df.format(c.getTime()));
    pedido.setLineItems(lineitems);

Call<Pedido> peticionpedido = pedidoapi.Crearpedido(pedido);
    peticionpedido.enqueue(new Callback<Pedido>() {
        @Override
        public void onResponse(Call<Pedido> call, Response<Pedido> response) {
            Toast.makeText(getApplicationContext(), "Pedido de cliente:  "+ pedido.getcustomerId() +"   Realizado con Éxito", Toast.LENGTH_LONG).show();
        }

        @Override
        public void onFailure(Call<Pedido> call, Throwable t) {
            Toast.makeText(getApplicationContext(), "Error: el Pedido no pudo ser realizado", Toast.LENGTH_LONG).show();
        }
    });

JSON 响应如下，其中“customer_id”为 0 并且未发布“line_items”:

{

"id": 261,
"parent_id": 0,
"status": "pending",
"order_key": "wc_order_58a26745d6579",
"number": 261,
"currency": "MXN",
"version": "2.6.7",
"prices_include_tax": false,
"date_created": "2017-02-14T02:11:17",
"date_modified": "2017-02-14T02:11:17",
"customer_id": 0,
"discount_total": "0.00",
"discount_tax": "0.00",
"shipping_total": "0.00",
"shipping_tax": "0.00",
"cart_tax": "0.00",
"total": "0.00",
"total_tax": "0.00",
"billing": {
    "first_name": "",
    "last_name": "",
    "company": "",
    "address_1": "",
    "address_2": "",
    "city": "",
    "state": "",
    "postcode": "",
    "country": "",
    "email": "",
    "phone": ""
},
"shipping": {
    "first_name": "",
    "last_name": "",
    "company": "",
    "address_1": "",
    "address_2": "",
    "city": "",
    "state": "",
    "postcode": "",
    "country": ""
},
"payment_method": "",
"payment_method_title": "",
"transaction_id": "",
"customer_ip_address": "187.167.213.178",
"customer_user_agent": "okhttp/3.3.0",
"created_via": "rest-api",
"customer_note": "",
"date_completed": "2017-02-14T02:11:17",
"date_paid": "",
"cart_hash": "",
"line_items": [ ],
"tax_lines": [ ],
"shipping_lines": [ ],
"fee_lines": [ ],
"coupon_lines": [ ],
"refunds": [ ],

}

像这样更改端点的方法参数:

@FormUrlEncoded
@POST("orders"+ ConstantesAPI.ACCES_TOKEN)
Call<Pedido> Crearpedido(
        @Field("date_created")String date,
        @Field("customer_id") int idcliente,
        @Field("line_items[]")  ArrayList<LineItem> line_items);


EndpointsAPI pedidoapi = apiadapter.conectarRestAPI(gsonBuilder.create());
    Call<Pedido> peticionpedido = pedidoapi.Crearpedido(pedido.getDateCreated(),pedido.getCustomerId(), lineitems);
    peticionpedido.enqueue(new Callback<Pedido>() {
        @Override
        public void onResponse(Call<Pedido> call, Response<Pedido> response) {
            Toast.makeText(getApplicationContext(), "Pedido de cliente:  "+ id_cliente_np +"   Realizado con Éxito", Toast.LENGTH_LONG).show();
        }

        @Override
        public void onFailure(Call<Pedido> call, Throwable t) {
            Toast.makeText(getApplicationContext(), "Error: el Pedido no pudo ser realizado", Toast.LENGTH_LONG).show();
        }
    });

JSON 响应正确发布了“customer_id”字段 (5)，但仍然缺少“line_items:”字段

{

"id": 279,
"parent_id": 0,
"status": "pending",
"order_key": "wc_order_58a3c50135a4f",
"number": 279,
"currency": "MXN",
"version": "2.6.7",
"prices_include_tax": false,
"date_created": "2017-02-15T03:03:29",
"date_modified": "2017-02-15T03:03:29",
"customer_id": 5,
"discount_total": "0.00",
"discount_tax": "0.00",
"shipping_total": "0.00",
"shipping_tax": "0.00",
"cart_tax": "0.00",
"total": "0.00",
"total_tax": "0.00",
"billing": {
    "first_name": "",
    "last_name": "",
    "company": "",
    "address_1": "",
    "address_2": "",
    "city": "",
    "state": "",
    "postcode": "",
    "country": "",
    "email": "eugenio_atocpan@panaderiaelrollo.com.mx",
    "phone": ""
},
"shipping": {
    "first_name": "",
    "last_name": "",
    "company": "",
    "address_1": "",
    "address_2": "",
    "city": "",
    "state": "",
    "postcode": "",
    "country": ""
},
"payment_method": "",
"payment_method_title": "",
"transaction_id": "",
"customer_ip_address": "187.167.213.178",
"customer_user_agent": "okhttp/3.3.0",
"created_via": "rest-api",
"customer_note": "",
"date_completed": "2017-02-15T03:03:29",
"date_paid": "",
"cart_hash": "",
"line_items": [ ],
"tax_lines": [ ],
"shipping_lines": [ ],
"fee_lines": [ ],
"coupon_lines": [ ],
"refunds": [ ],

}

非常感谢!

Answer 1

你在服务器端使用相同的GSON吗？如前所述，这可能是因为以下字段:

@SerializedName("line_items")
@Expose
private ArrayList<LineItem> line_items;

因为您使用了 SerializedName，所以此列表的 JSON 序列化将为:

{“line_items”:[..]}

当这个 JSON 到达服务器端时，服务器端可能不会反序列化这个字段，因为它有点不遵循约定。

要解决此问题，您可以:1)将@SerializedName(“line_items”)更改为@SerializedName(“lineItems”)或

2) 将 line_items 更改为 lineItems 以遵循约定并删除 @SerializedName("line_items") 或

3)更改服务器代码以指示它将“line_items”字段反序列化为对象属性。(如果服务器端是Java并且您在服务器端使用Jackson，请将其添加到line_items对象:@JsonProperty(“line_items”)。