Httpclient编写微信高级群发接口

最新推荐文章于 2025-08-20 22:19:22 发布

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本文介绍了如何使用Httpclient库发送JSON数据，并提供了发送消息到微信公众平台API的示例。

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学习如何使用Httpclient发送json数据

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;

import net.sf.json.JSONObject;


import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

/**
 * 对应微信公众平台API的:发送消息
 * @author zyk
 *
 */
public class SendMessage {
	
	/**
	 * 高级群发接口-上传图文消息素材【订阅号与服务号认证后均可用】
	 * @param access_token
	 * @param map
	 * @throws IOException
	 */
	public static String uploadnews(String access_token, HashMap map)
			throws IOException {
		String media_id = null;
		String url = "https://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token="
				+ access_token;
		JSONObject jo = JSONObject.fromObject(map);
		@SuppressWarnings("deprecation")
		CloseableHttpClient client = HttpClients.createDefault();
		HttpPost httpPost = new HttpPost(url);
		StringEntity params = new StringEntity(jo.toString(),"UTF-8");
		httpPost.setEntity(params);
		CloseableHttpResponse httpResponse = null;
		try {
			httpResponse = client.execute(httpPost);
			HttpEntity entity = httpResponse.getEntity();
			String jsonString = EntityUtils.toString(entity);
			JSONObject fromObject = JSONObject.fromObject(jsonString);
			Object media_idObject = fromObject.get("media_id");
			if (media_idObject != null) {
				media_id = media_idObject.toString();
			}
			System.out.println("上传图文消息素材-返回值："
					+ jsonString);
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if(httpResponse != null){
				httpResponse.close();
			}
			if(client != null){
				client.close();
			}
		}
		return media_id;
	}
}

根据json格式使用map和list进行构造

{
   "articles": [
		 {
                        "thumb_media_id":"qI6_Ze_6PtV7svjolgs-rN6stStuHIjs9_DidOHaj0Q-mwvBelOXCFZiq2OsIU-p",
                        "author":"xxx",
			 "title":"Happy Day",
			 "content_source_url":"www.qq.com",
			 "content":"content",
			 "digest":"digest",
                        "show_cover_pic":"1"
		 },
		 {
                        "thumb_media_id":"qI6_Ze_6PtV7svjolgs-rN6stStuHIjs9_DidOHaj0Q-mwvBelOXCFZiq2OsIU-p",
                        "author":"xxx",
			 "title":"Happy Day",
			 "content_source_url":"www.qq.com",
			 "content":"content",
			 "digest":"digest",
                        "show_cover_pic":"0"
		 }
   ]
}

		HashMap mapUp = new HashMap();
		HashMap SubMap = new HashMap();
		List list = new ArrayList();
		SubMap.put("thumb_media_id", "123456789");
		SubMap.put("author", "san_jose"));
		SubMap.put("title", "构造Json数据");
		SubMap.put("content_source_url","http://www.csdn.com");
		SubMap.put("content", "构造Json数据");
		SubMap.put("digest", "构造Json数据");
		SubMap.put("show_cover_pic", "1");
		list.add(SubMap);
		mapUp.put("articles", list);