微信公众号发布文章接口的调用

大家好，隔了快半年了（原因是因为博主在工作，顾不上了，但是看到每天都有人从我这学到有用的知识，感觉好开心啊啊！！！），终于发文了，激动，话不多说，直接切入正题：

博主在工作中遇到需要把公众号的内容弄到小程序上展示，中间的存储媒介是数据库，换句话说，就是需要先调用接口，再把数据存储到数据库里，最后给到软件去使用。

本次使用到的maven依赖是：

    
        
        org.apache.httpcomponents
        httpclient
        4.5.3
    

        
    
        
        com.alibaba
        fastjson
        1.2.48
    

主要是需要access_token，而access_token的获取是要appid跟sercet，具体作用参考公众号官方开发文档

https://developers.weixin.qq.com/doc/offiaccount/Getting_Started/Global_Return_Code.html

你们使用的话，需要在代码中换appid跟sercet的值

 

如何知道自己公众号的appid跟sercet的值，登陆网页公众号即可知道，切记需要把你运行代码的机器IP放进白名单里，如何知道自己机器IP,在不设置白名单运行程序时，他会报错，在报错里告诉你的ip，然后把ip设置到白名单，再重新运行即可

具体代码如下：

package HttpWechat;


import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
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.client.params.ClientPNames;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.LinkedList;
import java.util.List;

/**
 * author:haigui
 * data:2022/3/21
 * desc:
 **/
public class HttpMain {

    // http请求类
    private static class HttpRequest {
        private static String  html;
        private static HttpGet httpGet;
        private static HttpPost httpPost;
        private static CloseableHttpResponse response;

        private static String httpGet() throws IOException {

            // qppid
            String appid_value = appid;

            // secret
            String secret_value = secret;

            //1. 创建HttpClient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();

            //2，url
            String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="
                    +appid_value+"&secret="+secret_value;

            //3.发起Get请求
            httpGet = new HttpGet(url);

            //4.提交请求
            response = httpClient.execute(httpGet);

            //5.输出内容
            if (response.getStatusLine().getStatusCode() == 200) { //200表示响应成功
                    html = EntityUtils.toString(response.getEntity(), "UTF-8");
                    return html;
                }

            //6.关闭资源
            httpClient.close();
            response.close();
            return "请求失败！！！";
        }


        private static String httpPost(String url) throws IOException {

            //1. 创建HttpClient对象
            CloseableHttpClient httpClient = HttpClients.createDefault();

            //2.post请求
            httpPost = new HttpPost(url);

            //3.json参数传入
            JSONObject param_json = new JSONObject();
            param_json.put("offset", "0");
            param_json.put("count", "20");
            param_json.put("no_content", "0");

            // 使用URL实体转换工具
            httpPost.setEntity(new StringEntity(param_json.toString()));

            //4.执行Post请求
            response = httpClient.execute(httpPost);

            //5.输出内容
            if (response.getStatusLine().getStatusCode() == 200) { //200表示响应成功
                html = EntityUtils.toString(response.getEntity(), "UTF-8");
                return html;
            }

            //5.关闭资源
            httpClient.close();
            response.close();
            return "请求失败！！！";
        }


    }

    public static void main(String[] args) throws IOException, URISyntaxException {


        //获取access_token的json
        String access_token_json = HttpRequest.httpGet();

        //提取出access_token
        JSONObject jsonObject = JSONObject.parseObject(access_token_json);
        String access_token = jsonObject.getString("access_token");


        // 提交post请求
        String post = HttpRequest.httpPost("https://api.weixin.qq.com/cgi-bin/freepublish/batchget?access_token="+access_token);

        //输出返回数据
        System.out.println(post);
    }
}

感谢观看！！