微信获取用户信息接入例子 java实现

我不是女神ヾ 2023-10-18 09:01 2阅读 0赞

#### 微信获取用户信息接入例子 java实现 ####

*   *  微信公众平台开发文档
     *  以下例子主要用到静默方式获取用户信息,即无需用户授权直接获取用户信息的方式
     *  前台代码
     *  后台代码

### 微信公众平台开发文档 ###

1.  主要用到"微信网页授权"方面的api。
2.  如果要使用静默方式获取微信用户信息可以在"微信网页授权"获取到用户openid后再使用"获取用户基本信息"api获取用户信息。

![在这里插入图片描述][70]  
![在这里插入图片描述][70 1]

### 以下例子主要用到静默方式获取用户信息,即无需用户授权直接获取用户信息的方式 ###

### 前台代码 ###

1.  引导用户打开微信端链接
2.  由于这个项目是公众号开发,所以直接菜单引导用户打开微信端链接
3.  下图"首页"菜单对应的链接：[https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx87f4d5d049fbbcd6&redirect\_uri=http%3A%2F%2Fy2182763o7.iok.la%2Fwx%2FcallBack&response\_type=code&scope=snsapi\_base&connect\_redirect=1\#wechat\_redirect][https_open.weixin.qq.com_connect_oauth2_authorize_appid_wx87f4d5d049fbbcd6_redirect_uri_http_3A_2F_2Fy2182763o7.iok.la_2Fwx_2FcallBack_response_type_code_scope_snsapi_base_connect_redirect_1_wechat_redirect]
4.  链接所带参数根据个人项目而言

![在这里插入图片描述][70 2]

### 后台代码 ###

1.  以下controller里面的方法对应微信回调地址
2.  return “redirect:/index.html?userid=”+userid; 重定向到你项目里面要打开的页面

@RequestMapping("/callBack")
        public String callBack(String code){
            System.out.println("code:"+code);
            String userid = "";
            CloseableHttpClient httpClient = HttpClients.createDefault();
            try {
                URIBuilder uriBuilder = new URIBuilder("https://api.weixin.qq.com/sns/oauth2/access_token");
                uriBuilder.addParameter("appid",APPID);
                uriBuilder.addParameter("secret",APPSECRET);
                uriBuilder.addParameter("code",code);
                uriBuilder.addParameter("grant_type","authorization_code");
                HttpGet get = new HttpGet(uriBuilder.build());
                //执行请求
                CloseableHttpResponse closeableHttpResponse = httpClient.execute(get);
                //取响应结果
                int statusCode = closeableHttpResponse.getStatusLine().getStatusCode();
                if (statusCode==200){
                    HttpEntity entity = closeableHttpResponse.getEntity();
                    try {
                        String jsonStr = EntityUtils.toString(entity,"utf-8");
                        ObjectMapper objectMapper = new ObjectMapper();
                        HashMap<String,Object> map = objectMapper.readValue(jsonStr,HashMap.class);
                        System.out.println("jsonStr:"+jsonStr);
                        if (null==map.get("errcode")){
                            String access_token = getAccessToken();
                            String openid = (String) map.get("openid");
                            JieqiUser userInfo = login(access_token,openid); //用户信息
                            userid = userInfo.getUserid();
                            closeableHttpResponse.close(); //关闭资源
                            httpClient.close(); //关闭资源
                        }
                    } catch (Exception e) {
                        closeableHttpResponse.close();
                        httpClient.close();
                        return "redirect:/index.html?userid="+userid;
                    }
                }
            } catch (Exception e) {
                return "redirect:/index.html?userid="+userid;
            }
            return "redirect:/index.html?userid="+userid;
        }
    
    private JieqiUser login(String access_token,String openid){
            CloseableHttpClient httpClient = HttpClients.createDefault();
            try {
                URIBuilder uriBuilder = new URIBuilder("https://api.weixin.qq.com/cgi-bin/user/info");
                uriBuilder.addParameter("access_token",access_token);
                uriBuilder.addParameter("openid",openid);
                uriBuilder.addParameter("lang","zh_CN");
                HttpGet httpGet = new HttpGet(uriBuilder.build());
                CloseableHttpResponse response = httpClient.execute(httpGet);
                //获取响应码
                int statusCode = response.getStatusLine().getStatusCode();
                if (statusCode==200) {
                    String jsonStr = EntityUtils.toString(response.getEntity(), "utf-8");
                    System.out.println("微信用户信息:" + jsonStr);
                    ObjectMapper objectMapper = new ObjectMapper();
                    HashMap<String, Object> map = objectMapper.readValue(jsonStr, HashMap.class);
                    if (null == map.get("errcode")) {
                        JieqiUser jieqiUser = new JieqiUser();
                        jieqiUser.setOpenid(openid);
                        if (0 == (int) map.get("subscribe")) { //用户没有关注该公众号
                            jieqiUser.setSubscribe(0);
                        } else if (1 == (int) map.get("subscribe")) { //用户关注了该公众号
                            jieqiUser.setSubscribe(1);
                            jieqiUser.setSex((Integer) map.get("sex"));
                            jieqiUser.setNickname((String) map.get("nickname"));
                            jieqiUser.setAvatar((String) map.get("headimgurl"));
                            jieqiUser.setUnionid((String) map.get("unionid"));
                            jieqiUser.setSubscribeTime(DateTimeUtil.stampToDate(String.valueOf((int) map.get("subscribe_time"))));
                            jieqiUser.setSubscribeScene((String) map.get("subscribe_scene"));
                        }
                        response.close();
                        httpClient.close();
                        return userService.createUser(jieqiUser);
                    }
                }
            } catch (Exception e) {
    //            e.printStackTrace();
                return null;
            }
            return null;
        }

[70]: https://img-blog.csdn.net/20180920140103162?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE2NTcwNjA3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 1]: https://img-blog.csdn.net/20180920141124536?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE2NTcwNjA3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[https_open.weixin.qq.com_connect_oauth2_authorize_appid_wx87f4d5d049fbbcd6_redirect_uri_http_3A_2F_2Fy2182763o7.iok.la_2Fwx_2FcallBack_response_type_code_scope_snsapi_base_connect_redirect_1_wechat_redirect]: https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx87f4d5d049fbbcd6&redirect_uri=http%3A%2F%2Fy2182763o7.iok.la%2Fwx%2FcallBack&response_type=code&scope=snsapi_base&connect_redirect=1#wechat_redirect
[70 2]: https://img-blog.csdn.net/20180920142351454?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE2NTcwNjA3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70