前提:将微信小程序绑定到微信开放平台帐号 !!!
@RequestMapping("/wxGetUnionId") public Result wx(@RequestBody Map<String,Object> map) { Map<String, Object> remap = new HashMap<>(); //1、向微信服务器 使用登录凭证 code 获取 session_key 和 openid String url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + xcxAppID + "&secret=" + xcxSecret + "&js_code=" + map.get("code").toString() + "&grant_type=authorization_code"; ResponseEntity<String> res = restTemplate.getForEntity(url, String.class); JSONObject jsonObject = JSONObject.parseObject(res.getBody()); System.out.println("jsonObject============="+jsonObject); remap.put("unionId",jsonObject.get("unionid").toString()); return ResultUtil.success(remap); }