生成微信小程序码

官方文档https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/qr-code.html

本文使用B和C接口。

(1)获取token

	/**
	 * 获取access_token
* https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140183 * * @author == * @date 2019年5月7日 上午11:36:39 * @return */ public static String getToken() { // https请求方式: GET String appid = "=="; String secret = "=="; String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential" + "&appid=" + appid + "&secret=" + secret; String r = HttpUtil.getHttp(url); String access_token = JSONObject.parseObject(r).getString("access_token"); return access_token; }

(2)接口B

public static void getCode1(String access_token, String imgFileName) {
		String url = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=" + access_token;
		Map param = new HashMap();
		param.put("scene", "a=0");
		// param.put("access_token", access_token);
		param.put("page", "pages/index/index");
		try {
			HttpUtil.postDataWithJson(url, param, imgFileName);
			log.info("下载小程序码,保存到文件:" + imgFileName);
		} catch (IOException e) {
			e.printStackTrace();
			log.error(e);
		}
	}

(3)接口C 小程序二维码


	/**
	 * 获取小程序二维码(不推荐使用)
* 接口C
* https://developers.weixin.qq.com/miniprogram/dev/api-backend/wxacode.createQRCode.html * * @author == * @date 2019年5月7日 下午3:34:05 */ public static void getCodeC(String access_token, String imgFileName) { String url = "https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=" + access_token; Map param = new HashMap(); // param.put("access_token", access_token); String a = UUID.randomUUID() + ""; String b = UUID.randomUUID() + ""; String c = UUID.randomUUID() + ""; String path = "?a=" + a + "&b=" + b + "&c=" + c + ""; path = "?page/index/index"; param.put("path", path); try { HttpUtil.postDataWithJson(url, param, imgFileName); log.info("下载小程序二维码,保存到文件:" + imgFileName); } catch (IOException e) { e.printStackTrace(); log.error(e); } }

引用:

import com.alibaba.fastjson.JSONObject;

HttpUtil是自己写的。

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