改造 2 POST JSON 到 ThingSpeak 频道

Question

我是 Android 新手，正在开发一个应用程序，该应用程序会定期向 ThingSpeak 频道发送数据。
数据将是 Person 类型的对象列表。我想以 JSON 格式发送它们，因此为此我使用带有 POST 功能的 Retrofit 2。
假设我有一个频道号 123456 和 api_key APIKEY123 和 ThingSpeak api: api.thingspeak.com 。我的 POST 函数如下所示：

POST(URL_STRING)
Call<List<Person>> postData(para1, para2);

请问URL_STRING、para1和para2应该放什么？我应该使用什么类型的编码标签？提前谢谢你。

Answer 1

你见过这个吗？ https://www.mathworks.com/help/thingspeak/rest-api.html。

您需要将 Person、para1、para2 替换为您喜欢做的事情。

例如 - “更新频道”https://www.mathworks.com/help/thingspeak/update-a-channel.html

您将用 api_key 和名称替换 para1,para2。

而 Person 将被替换为包含 json 对象的 Channel 类

{
  "id": 4,
  "name": "Updated Channel",
  "description": null,
  "metadata": null,
  "latitude": null,
  "longitude": null,
  "created_at": "2014-03-25T13:12:50-04:00",
  "elevation": null,
  "last_entry_id": null,
  "ranking": 15,
  "username": "hans",
  "tags": [],
  "api_keys":
  [
    {
      "api_key": "XXXXXXXXXXXXXXXX",
      "write_flag": true
    }
  ]
}

Implementing Retrofit2 service interface 会告诉你如何实现服务接口。

编辑
以下将有你需要的东西。阅读Implementing Retrofit2 service interface 了解如何使用它。

服务接口语法

interface InterfaceTS {

    @GET
    Call<Channel> updateChannel(
            @Query("api_key") String key,
            @Query("name") String name);

}

频道语法：

package com.example;

import java.util.List;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class Channel {

    @SerializedName("id")
    @Expose
    private Integer id;
    @SerializedName("name")
    @Expose
    private String name;
    @SerializedName("description")
    @Expose
    private Object description;
    @SerializedName("metadata")
    @Expose
    private Object metadata;
    @SerializedName("latitude")
    @Expose
    private Object latitude;
    @SerializedName("longitude")
    @Expose
    private Object longitude;
    @SerializedName("created_at")
    @Expose
    private String createdAt;
    @SerializedName("elevation")
    @Expose
    private Object elevation;
    @SerializedName("last_entry_id")
    @Expose
    private Object lastEntryId;
    @SerializedName("ranking")
    @Expose
    private Integer ranking;
    @SerializedName("username")
    @Expose
    private String username;
    @SerializedName("tags")
    @Expose
    private List<Object> tags = null;
    @SerializedName("api_keys")
    @Expose
    private List<ApiKey> apiKeys = null;

    public Integer getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Object getDescription() {
        return description;
    }

    public void setDescription(Object description) {
        this.description = description;
    }

    public Object getMetadata() {
        return metadata;
    }

    public void setMetadata(Object metadata) {
        this.metadata = metadata;
    }

    public Object getLatitude() {
        return latitude;
    }

    public void setLatitude(Object latitude) {
        this.latitude = latitude;
    }

    public Object getLongitude() {
        return longitude;
    }

    public void setLongitude(Object longitude) {
        this.longitude = longitude;
    }

    public String getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(String createdAt) {
        this.createdAt = createdAt;
    }

    public Object getElevation() {
        return elevation;
    }

    public void setElevation(Object elevation) {
        this.elevation = elevation;
    }

    public Object getLastEntryId() {
        return lastEntryId;
    }

    public void setLastEntryId(Object lastEntryId) {
        this.lastEntryId = lastEntryId;
    }

    public Integer getRanking() {
        return ranking;
    }

    public void setRanking(Integer ranking) {
        this.ranking = ranking;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public List<Object> getTags() {
        return tags;
    }

    public void setTags(List<Object> tags) {
        this.tags = tags;
    }

    public List<ApiKey> getApiKeys() {
        return apiKeys;
    }

    public void setApiKeys(List<ApiKey> apiKeys) {
        this.apiKeys = apiKeys;
    }

}

API 密钥的语法

package com.example;

import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class ApiKey {

    @SerializedName("api_key")
    @Expose
    private String apiKey;
    @SerializedName("write_flag")
    @Expose
    private Boolean writeFlag;

    public String getApiKey() {
        return apiKey;
    }

    public void setApiKey(String apiKey) {
        this.apiKey = apiKey;
    }

    public Boolean getWriteFlag() {
        return writeFlag;
    }

    public void setWriteFlag(Boolean writeFlag) {
        this.writeFlag = writeFlag;
    }

}