 <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.2</version>
    </dependency>

先準備一個HTTP工具類Z

import org.apache.http.HttpEntity;
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.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
 
import java.io.IOException;
 
/**
 * @author lrx
 * @description: TODO
 * @date 2021/3/9 9:50
 */
public class HttpClientUtils {
    //Http協(xié)議GET請求
    public static String httpGet(String url) throws IOException {
        //初始化HttpClient
        CloseableHttpClient httpClient = HttpClients.createDefault();
        //創(chuàng)建HttpGet
        HttpGet httpGet = new HttpGet(url);
        //發(fā)起請求，獲取response對象
        CloseableHttpResponse response = httpClient.execute(httpGet);
        //獲取請求狀態(tài)碼
        //response.getStatusLine().getStatusCode();
        //獲取返回數(shù)據(jù)實體對象
        HttpEntity entity = response.getEntity();
        //轉(zhuǎn)為字符串
        String result = EntityUtils.toString(entity, "UTF-8");
        return result;
 
    }
 
    //Http協(xié)議Post請求
    public static String httpPost(String url, String json) throws Exception {
        //初始HttpClient
        CloseableHttpClient httpClient = HttpClients.createDefault();
        //創(chuàng)建Post對象
        HttpPost httpPost = new HttpPost(url);
        //設(shè)置Content-Type
       /* httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");*/
        StringEntity se = new StringEntity(json,"UTF-8");
        se.setContentType("application/x-www-form-urlencoded");
        httpPost.setEntity(se);
        //發(fā)起請求，獲取response對象
        CloseableHttpResponse response = httpClient.execute(httpPost);
        //獲取請求碼
        //response.getStatusLine().getStatusCode();
        //獲取返回數(shù)據(jù)實體對象
        HttpEntity entity = response.getEntity();
        //轉(zhuǎn)為字符串
        String result = EntityUtils.toString(entity, "UTF-8");
        return result;
    }
 
    //Https協(xié)議Get請求
    public static String httpsGet(String url) throws Exception {
        CloseableHttpClient hp = createSSLClientDefault();
        HttpGet hg = new HttpGet(url);
        CloseableHttpResponse response = hp.execute(hg);
        HttpEntity entity = response.getEntity();
        String content = EntityUtils.toString(entity, "UTF-8");
        hp.close();
        return content;
    }
 
    //Https協(xié)議Post請求
    public static String httpsPost(String url, String json) throws Exception {
        CloseableHttpClient hp = createSSLClientDefault();
        HttpPost httpPost = new HttpPost(url);
        httpPost.setHeader("Content-Type", "application/json");
        httpPost.setEntity(new StringEntity(json));
        CloseableHttpResponse response = hp.execute(httpPost);
        HttpEntity entity = response.getEntity();
        String content = EntityUtils.toString(entity, "UTF-8");
        hp.close();
        return content;
    }
 
 
    public static CloseableHttpClient createSSLClientDefault() throws Exception {
        //如果下面的方法證書還是不過，報錯的話試試下面第二種
        /* SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy(){
        //信任所有
        public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        return true;
        }
        }).build();
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);
        return HttpClients.custom().setSSLSocketFactory(sslsf).build();*/
 
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).build(),
                NoopHostnameVerifier.INSTANCE);
        return HttpClients.custom().setSSLSocketFactory(sslsf).build();
    }
}

測試代碼

import com.alibaba.fastjson.JSONObject;
 
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
 
/**
 * @author lrx
 * @description: TODO  小程序推送
 * @date 2022/4/11 13:32
 */
public class TestXCXMain {
    public static void main(String[] args) throws Exception {
        String appid = "";  //appid
        String secret = "";  //secret 
        //登錄鏈接獲取token
        String loginUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
        Map<String, Object> payloadMap = JSONObject.parseObject(HttpClientUtils.httpGet(loginUrl));
        String token = null;
        if (payloadMap.containsKey("access_token")) {
            token = payloadMap.get("access_token").toString();
        }
        System.out.println("獲取token" + token);
        Map<String, Object> qqMap = new HashMap<String, Object>();
        qqMap.put("touser", "openid");  //要推送的openid
        qqMap.put("template_id", "");   //信息模板id
        qqMap.put("page", "index");
        qqMap.put("miniprogram_state", "developer");
        qqMap.put("lang", "zh_CN");
        //封裝信息
        Map<String, Object> dataMap = new HashMap<String, Object>();
        Map<String, String> valueMap1 = new HashMap<String, String>();
        valueMap1.put("value", "成功");
        Map<String, String> valueMap2 = new HashMap<String, String>();
        valueMap2.put("value", "成功");
        dataMap.put("thing3", valueMap1);
        dataMap.put("thing1", valueMap2);
        qqMap.put("data", dataMap);
        //發(fā)送
        Map<String, Object> payloadMapData = JSONObject.parseObject(HttpClientUtils.httpPost("https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token="+token,JSONObject.toJSONString(qqMap)));
        if (payloadMapData.containsKey("errCode")) {
            System.out.println("返回code碼："+payloadMapData.get("errCode").toString());
        }
    }
}