1.代码调用

/**
     * 获access_token
     *
     * @return
     */
    public static String getAccessTokenOne(String appId,String appSecret) {
    

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

        System.out.println("request user info from url: {" + url + "}");
        JsonObject accessTokenInfo = null;
        try {
    

            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(url);
            HttpResponse httpResponse = httpClient.execute(httpGet);
            HttpEntity httpEntity = httpResponse.getEntity();
            String response = EntityUtils.toString(httpEntity, "utf-8");
            //LOGGER.error("获取Token-------------------"+response);
            Gson token_gson = new Gson();

            accessTokenInfo = token_gson.fromJson(response, JsonObject.class);

            return accessTokenInfo.get("access_token").toString().replaceAll("\"", "");

        } catch (Exception ex) {
    
            System.out.println("fail to request wechat user info. [error={" + ex + "}]");
        }
        return "";
    }
    public static void main(String[] args) throws Exception {
    
        String accessTokenOne = getAccessTokenOne("appid", "secret");
        System.out.println(accessTokenOne);

    }

2.微信公众平台接口调试工具调用

https://mp.weixin.qq.com/debug/

注：

这种情况下测试需要将你当前使用网络的外网ip配置到微信白名单即可测试；
如果一直报ip不在白名单，可以通过代码调用查看返回的ip，把那个ip加入白名单即可。

微信静默授权

/**
     * 静默授权获取用户openid
     * @param code
     * @param appid
     * @param appsecret
     * @return
     */
    public static JSONObject  userInfoJson(String code, String appid, String appsecret){
    
        String url = "https://api.weixin.qq.com/sns/oauth2/access_token"+
                "?appid="+appid+"&secret="+appsecret+"&code="+code+
                "&grant_type=authorization_code";

        String userurl = HttpUrl.getOfHttps(url);
        logger.info("code："+code);
        logger.info("appid："+appid);
        logger.info("userurl："+userurl);
        if(userurl == null){
    
            return  new ResponseInfo().setFail("微信登录失败，请稍后重试");
        }
        JSONObject jsonObject = JSONObject.parseObject(userurl);
        logger.info("jsonObject："+jsonObject.toJSONString());
        String openid = (String) jsonObject.get("openid");
//        logger.info("openid："+openid);
        if(openid== null ){
    
            return new ResponseInfo().setFail(jsonObject.toJSONString());
        }
        String access_token = (String) jsonObject.get("access_token");

        logger.info("access_token："+access_token);
//        String getUserInfo = "https://api.weixin.qq.com/sns/userinfo?access_token="+access_token+"&openid="+openid+"&lang=zh_CN";
        logger.info("getUserInfo："+getUserInfo);
//        String userInfoJson = HttpUrl.getOfHttps(getUserInfo);
//        userInfoJson = TranCharset.TranEncodeUTF_8(userInfoJson);
        JSONObject result = new JSONObject();
        result.put("openid",openid);
        result.put("access_token",access_token);
        result.put("province","1");
        result.put("city","ceshi");
        result.put("headimgurl","123");
        return new ResponseInfo().setSuccess(result.toJSONString());
    }