推特API（Twitter API）V2 用户关注

前面章节已经介绍使用code换取Token的整个流程了，这里不再重复阐述了，下面我们获取到用户token以后如何帮用户自动关注别人。需要参数关注者的用户ID（token授权用户）以及关注的目标用户ID。用户ID如何获取可以看上一章节获取用户信息里面就有用户ID参数。

1.引入相关依赖Maven

<dependency>
    <groupId>oauth.signpost</groupId>
    <artifactId>signpost-core</artifactId>
    <version>1.2.1.2</version>
</dependency>

<dependency>
    <groupId>oauth.signpost</groupId>
    <artifactId>signpost-commonshttp4</artifactId>
    <version>1.2.1.2</version>
</dependency>

<dependency>
    <groupId>com.twitter</groupId>
    <artifactId>twitter-api-java-sdk</artifactId>
    <version>1.1.4</version>
</dependency>

<dependency>
    <groupId>commons-httpclient</groupId>
    <artifactId>commons-httpclient</artifactId>
    <version>3.1</version>
</dependency><dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>29.0-jre</version>
</dependency>

2.相关的配置类

java 复制代码

/**
 * 推特相关配置
 */
public class TwitterConfig {
 
    /**
     * 客户id和客户私钥
     */
    public static final String CLIENT_ID = "c3dqY111tjbnFPNDM6MTpjaQ";
    public static final String CLIENT_SECRET = "kf1119fmdeXZHpOV-fjv9umx55ZdccCkNONjea";
 
 
    /**
     * 应用KYE和私钥
     */
    public static final String CONSUMER_KEY = "lhyfiD111MffGeHMR";
    public static final String CONSUMER_SECRET = "BRNxnV5Lx111jtptduIkcwjB";
 
    /**
     * 应用的TOKEN
     */
    public static final String ACCESS_TOKEN = "14821111633-A8xyN5111FgkbStu";
    public static final String ACCESS_TOKEN_SECRET = "oZaKBphpoo111SZvzoXPAQ";
 
}

java 复制代码

@Data
@Accessors(chain = true)
public class AttentionDto {

    /**
     * true 表示关注成功  false 表示关注失败（目标用户没有公开推文的情况，因为他们必须批准关注者请求）
     */
    private Boolean following;

    /**
     * 指示目标用户是否需要批准关注请求。请注意，只有当目标用户批准传入的关注者请求时，经过身份验证的用户才会关注目标用户  false就是正常的
     */
    private Boolean pending_follow;

}

java 复制代码

  /**
     * 用户关注
     * @param token 授权换取的用户token
     * @param userId 用户自己的ID
     * @return
     * @throws Exception
     */
    public AttentionDto attention(String token, String userId) throws Exception {
        String urlAdress = "https://api.twitter.com/2/users/" + userId + "/following";
        URL url12 = new URL(urlAdress);
        HttpURLConnection connection = (HttpURLConnection) url12.openConnection();
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/json");
        connection.setRequestProperty("Authorization", "Bearer " + token);
        JSONObject requestBody = new JSONObject();
        //需要关注的用户ID
        requestBody.put("target_user_id", "148294855969111111");
        String requestBodyString = requestBody.toString();
        connection.setDoOutput(true);
        OutputStream outputStream = connection.getOutputStream();
        outputStream.write(requestBodyString.getBytes());
        outputStream.flush();
        outputStream.close();

        int responseCode = connection.getResponseCode();
        InputStream inputStream;
        if (responseCode >= 200 && responseCode < 400) {
            inputStream = connection.getInputStream();
        } else {
            inputStream = connection.getErrorStream();
        }

        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        String line;
        StringBuilder responseBuilder = new StringBuilder();
        while ((line = reader.readLine()) != null) {
            responseBuilder.append(line);
        }
        reader.close();
        String response = responseBuilder.toString();
        if(JSON.parseObject(response).get("data") != null){
            JSONObject json = JSON.parseObject(JSON.parseObject(response).get("data").toString());
            AttentionDto attentionDto = new AttentionDto();
            Object ret = json.get("following");
            attentionDto.setFollowing(Boolean.parseBoolean(ret == null ? "false" : ret.toString()));
            ret = json.get("pending_follow");
            attentionDto.setPending_follow(Boolean.parseBoolean(ret == null ? "false" : ret.toString()));
            return attentionDto;
        }
        return null;
    }