怎么在java中调用postman的地址

在Java中，你可以使用HttpURLConnection、HttpClient或者其他HTTP客户端库来发送POST请求到Postman测试接口。这里是一个基本的例子，使用`java.net.HttpURLConnection`：

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

public class PostmanRequest {
    public static void main(String[] args) throws Exception {
        String url = "https://postman-echo.com/post"; // 替换为你需要的Postman测试接口URL
        String requestBody = "{ \"key\": \"value\" }"; // 请求体数据，也可以替换为你实际的JSON或其他格式

        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        con.setRequestMethod("POST"); // 设置请求方法为POST
        con.setRequestProperty("Content-Type", "application/json; charset=utf-8");
        con.setDoOutput(true); // 表示需要向服务器发送数据

        try (OutputStream os = con.getOutputStream()) {
            byte[] outputBytes = requestBody.getBytes("utf-8");
            os.write(outputBytes);
        }

        int responseCode = con.getResponseCode();
        System.out.println("Response Code : " + responseCode);

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        System.out.println(response.toString());
    }
}

运行这个程序，它会发送一个POST请求到指定的Postman接口，并打印出响应结果。