使用 Apache HttpClient 发送 HTTP GET 请求 - Java 代码示例

以下是使用 Apache HttpClient 来实现的代码示例：

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class HttpClientExample {
    public static void main(String[] args) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        try {
            HttpGet httpGet = new HttpGet('https://api.github.com/users/octocat');
            CloseableHttpResponse response = httpClient.execute(httpGet);
            try {
                HttpEntity entity = response.getEntity();
                if (entity != null) {
                    System.out.println(EntityUtils.toString(entity));
                }
            } finally {
                response.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

这段代码使用了 Apache HttpClient 来发送 HTTP GET 请求，并获取响应体的内容。需要注意的是，在使用完响应对象后需要手动关闭。