httpclient get请求java

您可以使用 Apache HttpClient 库来发送 GET 请求。以下是一个示例代码：

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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;

public class HttpClientExample {
    public static void main(String[] args) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpGet httpGet = new HttpGet("http://example.com/api");

        try {
            HttpResponse response = httpClient.execute(httpGet);
            HttpEntity entity = response.getEntity();

            if (entity != null) {
                String responseBody = EntityUtils.toString(entity);
                System.out.println(responseBody);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

在上面的代码中，我们首先创建一个 `CloseableHttpClient` 对象，然后使用 `HttpGet` 类来创建一个 GET 请求对象，并将目标 URL 传递给构造函数。接下来，我们使用 `httpClient.execute(httpGet)` 发送请求，并获取响应对象。通过检查响应对象的实体是否为空，