java 生成小程序码

微信小程序码用于分享使用

java生成微信小程序码并上传到阿里云返回路径：

import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

public class WxQrCodeUtil {

        public static String GET_MINICODE_URL="https://api.weixin.qq.com/wxa/getwxacodeunlimit";
        //微信小程序appid
        public static String APPID="";
        //微信小程序秘钥
        public static String APPSECRET="";

        public static String getAccessTokenAsUrl(){
            String tokenStr=HttpUtil.get("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+APPID+"&secret="+APPSECRET+"");
            JSonObject jsonObject = JSONObject.parseObject(tokenStr);
            return "?access_token="+jsonObject.getString("access_token");
        }
        
        public static String downloadMiniCode(String  fileName, String certNumber){
            Map paramMap = new HashMap<>();
            paramMap.put("scene",certNumber);
            paramMap.put("is_hyaline",true);
            String imgFilePath="";
            try
            {
                URL url = new URL(GET_MINICODE_URL+getAccessTokenAsUrl());
                HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
                httpURLConnection.setRequestMethod("POST");// 提交模式
                httpURLConnection.setConnectTimeout(10000);//连接超时 单位毫秒
                httpURLConnection.setReadTimeout(10000);//读取超时 单位毫秒
                // 发送POST请求必须设置如下两行
                httpURLConnection.setDoOutput(true);
                httpURLConnection.setDoInput(true);
                // 获取URLConnection对象对应的输出流
                PrintWriter printWriter = new PrintWriter(httpURLConnection.getOutputStream());
                printWriter.write(JSON.toJSonString(paramMap));
                // flush输出流的缓冲
                printWriter.flush();
                //开始获取数据
                BufferedInputStream bis = new BufferedInputStream(httpURLConnection.getInputStream());
                OSSClientUtil ossClientUtil=new OSSClientUtil();
                imgFilePath= ossClientUtil.uploadFile(fileName, "qrcode",bis );

            }
            catch (Exception e)
            {
                e.printStackTrace();
            }
            return imgFilePath;
        }






}

此方法可用于分享