java访问第三方接口需要请求头携带token Authorization your token并且提交类型 Content-Type ：applicationjson 为post请求代码

下面是一个Java中使用POST请求访问第三方接口并携带请求头的示例代码：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class APIRequest {

    public static void main(String[] args) {
        String url = "https://api.example.com/endpoint";
        String token = "<your token>";
        String requestBody = "{\"key1\":\"value1\", \"key2\":\"value2\"}";

        try {
            URL apiUrl = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) apiUrl.openConnection();

            connection.setRequestMethod("POST");
            connection.setRequestProperty("Authorization", token);
            connection.setRequestProperty("Content-Type", "application/json");

            connection.setDoOutput(true);
            OutputStream outputStream = connection.getOutputStream();
            outputStream.write(requestBody.getBytes());
            outputStream.flush();
            outputStream.close();

            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                String response;
                StringBuilder responseContent = new StringBuilder();

                while ((response = reader.readLine()) != null) {
                    responseContent.append(response);
                }

                reader.close();
                System.out.println(responseContent.toString());
            } else {
                System.out.println("Request failed with response code: " + responseCode);
            }

            connection.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

请注意替换url和token的值以及根据需要修改requestBody的内容。这个示例代码使用HttpURLConnection进行HTTP请求，并且设置了Authorization和Content-Type请求头，并以JSON格式发送POST请求。最后，它打印出了API的响应结果