HttpClient post 请求传参实例

您好，以下是使用 HttpClient 进行 post 请求传参的示例：

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.util.EntityUtils;

public class Example {
  public static void main(String[] args) {
    CloseableHttpClient httpClient = HttpClients.createDefault();

    try {
      URIBuilder builder = new URIBuilder("https://example.com/api");

      List<NameValuePair> params = new ArrayList<NameValuePair>();
      params.add(new BasicNameValuePair("param1", "value1"));
      params.add(new BasicNameValuePair("param2", "value2"));

      URI uri = builder.build();
      HttpPost request = new HttpPost(uri);
      request.setEntity(new UrlEncodedFormEntity(params));

      CloseableHttpResponse response = httpClient.execute(request);

      try {
        int statusCode = response.getStatusLine().getStatusCode();
        String responseBody = EntityUtils.toString(response.getEntity());
        System.out.println(statusCode);
        System.out.println(responseBody);
      } finally {
        response.close();
      }
    } catch (Exception e) {
      System.err.println(e);
    } finally {
      try {
        httpClient.close();
      } catch (IOException e) {
        System.err.println(e);
      }
    }
  }
}