1、数据交互方式：http；

2、使用技术【引入jar依赖】

<dependency><groupId>commons-httpclient</groupId><artifactId>commons-httpclient</artifactId><version>3.1</version>
</dependency>
<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.13</version>
</dependency>

3、java代码

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;import java.io.IOException;/*** httpClient工具类*/
public class HttpClientUtil {/*** Post请求方法** @param uri     请求地址* @param content 发送内容* @return*/public static String doPost(String uri, String content) {HttpClient client = new DefaultHttpClient();HttpPost post = new HttpPost(uri);post.addHeader("Accept", "application/json");post.addHeader("Content-Type", "application/json");StringEntity reqEntity = new StringEntity(content, "utf-8");reqEntity.setContentEncoding("UTF-8");reqEntity.setContentType("application/json");post.setEntity(reqEntity);   // 设置请求的数据try {HttpResponse resp = client.execute(post);HttpEntity httpEntity = resp.getEntity();return EntityUtils.toString(httpEntity, "UTF-8").trim();} catch (Exception e) {return e.getMessage();}}/*** 发送get请求* @param uri     请求地址* @return*/public static String doGet(String uri) {CloseableHttpClient httpClient = HttpClients.createDefault();HttpGet httpGet = new HttpGet(uri);httpGet.setHeader("User-Agent", "Mozilla/5.0");CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);HttpEntity httpEntity = response.getEntity();return EntityUtils.toString(httpEntity, "UTF-8").trim();} catch (IOException e) {return e.getMessage();}}
}