java的get请求

Java中发送GET请求可以使用HttpURLConnection或者HttpClient两种方式。下面是使用HttpURLConnection发送GET请求的示例代码：

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

public class HttpGetExample {
    public static void main(String[] args) {
        try {
            URL url = new URL("http://example.com/api/getData");
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            con.setRequestMethod("GET");

            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());
        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}

其中，URL为请求的地址，HttpURLConnection是Java中用于发送HTTP请求的类，setRequestMethod("GET")表示发送GET请求，getResponseCode()可以获取响应状态码，getInputStream()可以获取响应内容的输入流。