这篇文章主要介绍了springboot 微信授权网页登录操作流程,本文通过实例图文相结合给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下
目录
操作流程
先看看官方给的文档
二、使用步骤
使用到的HttpClientUtil工具类
操作流程
假设你已经有自己的域名，因为微信公众号和微信回调都需要域名
先看看官方给的文档
根据官方文档，主要流程如下：
（2）通过code换取网页授权access_token（与基础支持中的access_token不同）
（3）刷新access_token（如果有需要）
（3）通过网页授权access_token和openid获取用户基本信息
编写微信授权方法和获取用户信息方法
二、使用步骤
获取微信二维码信息
代码如下（示例）：
/** * 公众号微信登录授权 */ @RequestMapping("/wxLogin") public void wxLogin(HttpServletResponse response) throws IOException { //这个url的域名必须在公众号中进行注册验证，这个地址是成功后的回调地址 String backUrl = "http://7ca0c439f61c.ngrok.io/callback";//使用自己的域名 // 第一步：用户同意授权，获取code //请求地址 snsapi_base snsapi_userinfo String url = "https://open.weixin.qq.com/connect/oauth2/authorize" + "?appid=" + HttpClientUtil.APPID + "&redirect_uri=" + URLEncoder.encode(backUrl,"utf-8") + "&response_type=code" + "&scope=snsapi_userinfo" + "&state=STATE#wechat_redirect"; logger.info("forward重定向地址{" + url + "}"); //必须重定向，否则不能成功 response.sendRedirect(url); } 备注：在前端页面直接加载url 就可以出现二维码界面了。直接用的微信的页面，也可以根据自己的爱好进行设计页面 /** * 公众号微信登录授权回调函数 */ @RequestMapping("/callback") public UserLoginRes callback(HttpServletRequest req, HttpServletResponse resp) throws servletexception, IOException { UserLoginRes userLoginRes = new UserLoginRes(); try{ WXUserInfoReq weixinUserInfo = new WXUserInfoReq(); /*start 获取微信用户基本信息*/ String code = req.getParameter("code"); //第二步：通过code换取网页授权access_token String url = "https://api.weixin.qq.com/sns/oauth2/access_token?" + "appid=" + HttpClientUtil.APPID + "&secret=" + HttpClientUtil.APPSECRET + "&code=" + code + "&grant_type=authorization_code"; System.out.println(url); String result = HttpClientUtil.doGet(url); JSONObject jsonObject = JSON.parSEObject(result); /* { "access_token":"ACCESS_TOKEN", "expires_in":7200, "refresh_token":"REFRESH_TOKEN", "openid":"OPENID", "scope":"ScopE" } */ String openid = jsonObject.getString("openid"); String access_token = jsonObject.getString("access_token"); //第三步验证access_token是否失效； String chickUrl = "https://api.weixin.qq.com/sns/auth?access_token=" + access_token + "&openid=" + openid; String resultInfo = HttpClientUtil.doGet(chickUrl); JSONObject chickuserInfo = JSON.parSEObject(resultInfo); System.out.println(chickuserInfo.toString()); if (!"0".equals(chickuserInfo.getString("errcode"))) { String refreshInfo1 = HttpClientUtil.doGet(chickUrl); JSONObject refreshInfo = JSON.parSEObject(refreshInfo1); /* { "access_token":"ACCESS_TOKEN", "expires_in":7200, "refresh_token":"REFRESH_TOKEN", "openid":"OPENID", "scope":"ScopE" } */ access_token = refreshInfo.getString("access_token"); } // 第四步：拉取用户信息 String infoUrl = "https://api.weixin.qq.com/sns/userinfo?access_token=" + access_token + "&openid=" + openid + "&lang=zh_CN"; JSONObject userInfo = JSON.parSEObject(HttpClientUtil.doGet(infoUrl)); /* { "openid":" OPENID", "nickname": NICKNAME, "sex":"1", "province":"PROVINCE" "city":"CITY", "country":"COUNTRY", "headimgurl": "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfhe/46", "privilege":[ "PRIVILEGE1" "PRIVILEGE2" ], "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL" } */ System.out.println(userInfo.getString("openid") + ":" + userInfo.getString("nickname") +":" + userInfo.getString("sex")); }catch (Exception e){ e.printstacktrace(); userLoginRes.setResult("NO"); userLoginRes.setRtnErrId("ERROR"); userLoginRes.setRtnErrMsg(e.getMessage()); } return userLoginRes; }
使用到的HttpClientUtil工具类
代码如下（示例）：
public class HttpClientUtil { //appid、secret为自己公众号平台的appid和secret public static final String APPID="xxxxxxx"; public static final String APPSECRET ="xxxxxxx"; public static String doGet(String url, Map param) { // 创建Httpclient对象 CloseableHttpClient httpclient = HttpClients.createDefault(); String resultString = ""; CloseableHttpResponse response = null; HttpGet httpGet = null; try { // 创建uri URIBuilder builder = new URIBuilder(url); if (param != null) { for (String key : param.keySet()) { builder.addParameter(key, param.get(key)); } } URI uri = builder.build(); // 创建http GET请求 httpGet = new HttpGet(uri); httpGet.setHeader("Host", "api.weixin.qq.com"); httpGet.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"); httpGet.setHeader("Accept", "text/html, application/xhtml+xml, */*"); httpGet.setHeader("Accept-Encoding", "gzip, deflate, br"); httpGet.setHeader("Connection", "keep-alive"); httpGet.setHeader("Accept-Language", "zh-CN"); httpGet.setHeader("Cache-Control", "no-cache"); // 执行请求 response = httpclient.execute(httpGet); // 判断返回状态是否为200 if (response.getStatusLine().getStatusCode() == 200) { resultString = EntityUtils.toString(response.getEntity(), "UTF-8"); } } catch (Exception e) { e.printstacktrace(); } finally { try { if (response != null) { response.close(); } httpGet.releaseConnection(); httpclient.close(); } catch (IOException e) { e.printstacktrace(); } } return resultString; } public static String doGet(String url) { return doGet(url, null); } public static String doPost(String url, Map param) { // 创建Httpclient对象 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = null; String resultString = ""; try { // 创建Http Post请求 HttpPost httpPost = new HttpPost(url); // 创建参数列表 if (param != null) { List paramList = new ArrayList(); for (String key : param.keySet()) { paramList.add(new BasicNameValuePair(key, param.get(key))); } // 模拟表单 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList); httpPost.setEntity(entity); } // 执行http请求 response = httpClient.execute(httpPost); resultString = EntityUtils.toString(response.getEntity(), "utf-8"); } catch (Exception e) { e.printstacktrace(); } finally { try { response.close(); } catch (IOException e) { e.printstacktrace(); } } return resultString; } public static String doPost(String url) { return doPost(url, null); } public static String doPostJson(String url, String json) { // 创建Httpclient对象 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = null; String resultString = ""; try { // 创建Http Post请求 HttpPost httpPost = new HttpPost(url); // 创建请求内容 StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON); httpPost.setEntity(entity); // 执行http请求 response = httpClient.execute(httpPost); resultString = EntityUtils.toString(response.getEntity(), "utf-8"); } catch (Exception e) { e.printstacktrace(); } finally { try { response.close(); } catch (IOException e) { e.printstacktrace(); } } return resultString; } public static String doGetStr(String httpurl) { HttpURLConnection connection = null; InputStream is = null; BufferedReader br = null; String result = null;// 返回结果字符串 try { // 创建远程url连接对象 URL url = new URL(httpurl); // 通过远程url连接对象打开一个连接，强转成httpURLConnection类 connection = (HttpURLConnection) url.openConnection(); // 设置连接方式：get connection.setRequestMethod("GET"); // 设置连接主机服务器的超时时间：15000毫秒 connection.setConnectTimeout(15000); // 设置读取远程返回的数据时间：60000毫秒 connection.setReadTimeout(60000); //设置请求头 connection.setRequestProperty("Host", "api.weixin.qq.com"); connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"); connection.setRequestProperty("Accept", "text/html, application/xhtml+xml, */*"); connection.setRequestProperty("Accept-Encoding", "gzip, deflate, br"); connection.setRequestProperty("Connection", "keep-alive"); connection.setRequestProperty("Accept-Language", "zh-CN"); connection.setRequestProperty("Cache-Control", "no-cache"); // 发送请求 connection.connect(); // 通过connection连接，获取输入流 if (connection.getResponseCode() == 200) { is = connection.getInputStream(); // 封装输入流is，并指定字符集 br = new BufferedReader(new InputStreamReader(is, "UTF-8")); // 存放数据 StringBuffer sbf = new StringBuffer(); String temp = null; while ((temp = br.readLine()) != null) { sbf.append(temp); sbf.append("rn"); } result = sbf.toString(); } } catch (MalformedURLException e) { e.printstacktrace(); } catch (IOException e) { e.printstacktrace(); } finally { // 关闭资源 if (null != br) { try { br.close(); } catch (IOException e) { e.printstacktrace(); } } if (null != is) { try { is.close(); } catch (IOException e) { e.printstacktrace(); } } connection.disconnect();// 关闭远程连接 } return result; } }
最后根据实际业务处理用户登录
//3.根据uuid查询用户是否存在，如果存在直接登录。如果不存在则自动注册，在登录 UserInfoModel userInfoByWechat = iUserDao.getUserInfoByWechat(userInfoStr.get("unionid").toString()); if (userInfoByWechat != null) { return ReturnMessage.success(0,"获取成功",userInfoByWechat); } //4.数据库添加用户信息 String username = userInfoStr.get("nickname").toString(); String unionid = userInfoStr.get("unionid").toString(); UserInfoBean userInfoBean = new UserInfoBean(); userInfoBean.setUuid(unionid); userInfoBean.setUsername(username); // 微信登录 userInfoBean.setStatus(2); iUserDao.insertUser(userInfoBean); //5.根据uuid查询新注册的用户信息 UserInfoModel userInfoModel= iUserDao.getUserInfoByWechat(unionid); if (userInfoModel == null) { return ReturnMessage.fail(400,"用户添加失败，请重新操作"); }
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