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java怎么发送get请求header传参

小亿
465
2023-10-26 10:02:08
栏目: 编程语言

在Java中发送GET请求并传递header参数,可以使用java.net.HttpURLConnection类。下面是一个示例代码:

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

public class Main {
    public static void main(String[] args) {
        try {
            // 创建URL对象
            URL url = new URL("http://example.com/api?param1=value1&param2=value2");

            // 打开连接
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // 设置请求方法为GET
            connection.setRequestMethod("GET");

            // 设置header参数
            connection.setRequestProperty("Header1", "Value1");
            connection.setRequestProperty("Header2", "Value2");

            // 获取响应代码
            int responseCode = connection.getResponseCode();

            // 读取响应内容
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            StringBuilder response = new StringBuilder();
            while ((line = bufferedReader.readLine()) != null) {
                response.append(line);
            }
            bufferedReader.close();

            // 打印响应内容
            System.out.println(response.toString());

            // 关闭连接
            connection.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

在上述代码中,通过setRequestProperty方法设置了header参数,然后通过getInputStream方法获取响应内容。注意,需要将http://example.com/api?param1=value1&param2=value2替换为实际的请求URL,并根据需要设置自定义的header参数。

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