集成微信登录

1、OAuth2

1.1 作用

开放系统间授权

1.2 多方授权的解决方法

方式一：用户名密码复制

将受保护的资源中的用户名和密码存储在客户应用的服务器上，使用时直接使用这个用户名和密码登录

适用于同一公司内部的多个系统，不适用于不受信的第三方应用
方式二：通用开发者key
适用于合作商或者授信的不同业务部门之间

方式三：颁发令牌
接近OAuth2方式，需要考虑如何管理令牌、颁发令牌、吊销令牌，需要统一的协议，因此就有了OAuth2协议

1.3 OAuth2最简向导

最简向导
川崎高彦：OAuth2领域专家，开发了一个OAuth2 sass服务，OAuth2 as Service，并且做成了一个公司
在融资的过程中为了向投资人解释OAuth2是什么，于是写了一篇文章，《OAuth2最简向导》

1.4 OAuth2的应用

1. 微服务安全
   现代微服务中系统微服务化以及应用的形态和设备类型增多，不能用传统的登录方式，核心的技术不是用户名和密码，而是token，由AuthServer颁发token，用户使用token进行登录

2. 社交登录

2、微信登录介绍

2.1 前期准备

1、注册
微信开放平台：https://open.weixin.qq.com
2、邮箱激活
3、完善开发者资料
4、开发者资质认证
准备营业执照，1-2个工作日审批、300元
5、创建网站应用
提交审核，7个工作日审批
6、内网穿透
ngrok的使用

2.2 授权流程

参考文档：https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419316505&token=e547653f995d8f402704d5cb2945177dc8aa4e7e&lang=zh_CN

第一步：请求CODE（生成授权URL）
第二步：通过code获取access_token（开发回调URL）

3、服务器端开发

操作模块：service-user
说明：微信登录二维码我们是以弹出层的形式打开，不是以页面形式，所以做法是不一样的，参考如下链接，上面有相关弹出层的方式
https://developers.weixin.qq.com/doc/oplatform/Website_App/WeChat_Login/Wechat_Login.html
如图：

因此我们的操作步骤为：

第一步我们通过接口把对应参数返回页面；
第二步在头部页面启动打开微信登录二维码；
第三步处理登录回调接口；
第四步回调返回页面通知微信登录层回调成功
第五步如果是第一次扫描登录，则绑定手机号码，登录成功
接下来我们根据步骤，一步一步实现

3.1 返回微信登录参数

3.1.1 添加配置
在application-dev.yml添加配置

wx.open.app_id=wxed9954c01bb89b47
wx.open.app_secret=a7482517235173ddb4083788de60b90e
wx.open.redirect_url=http://guli.shop/api/ucenter/wx/callback
yygh.baseUrl=http://localhost:3000

3.1.2 添加配置类

@Component
public class ConstantPropertiesUtil implements InitializingBean {@Value("${wx.open.app_id}")private String appId;@Value("${wx.open.app_secret}")private String appSecret;@Value("${wx.open.redirect_url}")private String redirectUrl;@Value("${yygh.baseUrl}")private String yyghBaseUrl;public static String WX_OPEN_APP_ID;public static String WX_OPEN_APP_SECRET;public static String WX_OPEN_REDIRECT_URL;public static String YYGH_BASE_URL;@Overridepublic void afterPropertiesSet() throws Exception {WX_OPEN_APP_ID = appId;WX_OPEN_APP_SECRET = appSecret;WX_OPEN_REDIRECT_URL = redirectUrl;YYGH_BASE_URL = yyghBaseUrl;}
}

3.1.3 添加接口
添加com.atguigu.yygh.user.api.WeixinApiController 类

@Controller
@RequestMapping("/api/ucenter/wx")
public class WeixinApiController {@Autowiredprivate UserInfoService userInfoService;@Autowiredprivate RedisTemplate redisTemplate;/*** 获取微信登录参数*/@GetMapping("getLoginParam")@ResponseBodypublic Result genQrConnect(HttpSession session) throws UnsupportedEncodingException {String redirectUri = URLEncoder.encode(ConstantPropertiesUtil.WX_OPEN_REDIRECT_URL, "UTF-8");Map<String, Object> map = new HashMap<>();map.put("appid", ConstantPropertiesUtil.WX_OPEN_APP_ID);map.put("redirectUri", redirectUri);map.put("scope", "snsapi_login");map.put("state", System.currentTimeMillis()+"");//System.currentTimeMillis()+""return Result.ok(map);}
}

3.2 前端显示登录二维码

3.2.1 封装api请求
创建/api/user/wexin.js文件

import request from '@/utils/request'const api_name = `/api/ucenter/wx`export default {getLoginParam() {return request({url: `${api_name}/getLoginParam`,method: `get`})}
}

3.2.2 修改组件
修改layouts/myheader.vue文件，添加微信二维码登录逻辑
1、引入api

import weixinApi from '@/api/weixin'

2、引入微信js

  mounted() {// 注册全局登录事件对象window.loginEvent = new Vue();// 监听登录事件loginEvent.$on('loginDialogEvent', function () {document.getElementById("loginDialog").click();})// 触发事件，显示登录层：loginEvent.$emit('loginDialogEvent')//初始化微信jsconst script = document.createElement('script')script.type = 'text/javascript'script.src = 'https://res.wx.qq.com/connect/zh_CN/htmledition/js/wxLogin.js'document.body.appendChild(script)// 微信登录回调处理let self = this;window["loginCallback"] = (name,token, openid) => {self.loginCallback(name, token, openid);}},

3、实例化微信JS对象
添加微信登录方法

loginCallback(name, token, openid) {// 打开手机登录层，绑定手机号，改逻辑与手机登录一致if(openid != '') {this.userInfo.openid = openidthis.showLogin()} else {this.setCookies(name, token)}
},weixinLogin() {this.dialogAtrr.showLoginType = 'weixin'weixinApi.getLoginParam().then(response => {var obj = new WxLogin({self_redirect:true,id: 'weixinLogin', // 需要显示的容器idappid: response.data.appid, // 公众号appid wx*******scope: response.data.scope, // 网页默认即可redirect_uri: response.data.redirectUri, // 授权成功后回调的urlstate: response.data.state, // 可设置为简单的随机数加session用来校验style: 'black', // 提供"black"、"white"可选。二维码的样式href: '' // 外部css文件url，需要https})})
},

说明：微信登录方法已绑定weixinLogin()，查看页面

3.3 处理微信回调

3.3.1 添加httpclient工具类
添加com.atguigu.yygh.user.util.HttpClientUtils类

public class HttpClientUtils {public static final int connTimeout=10000;public static final int readTimeout=10000;public static final String charset="UTF-8";private static HttpClient client = null;static {PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();cm.setMaxTotal(128);cm.setDefaultMaxPerRoute(128);client = HttpClients.custom().setConnectionManager(cm).build();}public static String postParameters(String url, String parameterStr) throws ConnectTimeoutException, SocketTimeoutException, Exception{return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);}public static String postParameters(String url, String parameterStr,String charset, Integer connTimeout, Integer readTimeout) throws ConnectTimeoutException, SocketTimeoutException, Exception{return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);}public static String postParameters(String url, Map<String, String> params) throws ConnectTimeoutException,SocketTimeoutException, Exception {return postForm(url, params, null, connTimeout, readTimeout);}public static String postParameters(String url, Map<String, String> params, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,SocketTimeoutException, Exception {return postForm(url, params, null, connTimeout, readTimeout);}public static String get(String url) throws Exception {return get(url, charset, null, null);}public static String get(String url, String charset) throws Exception {return get(url, charset, connTimeout, readTimeout);}/*** 发送一个 Post 请求, 使用指定的字符集编码.** @param url* @param body RequestBody* @param mimeType 例如 application/xml "application/x-www-form-urlencoded" a=1&b=2&c=3* @param charset 编码* @param connTimeout 建立链接超时时间,毫秒.* @param readTimeout 响应超时时间,毫秒.* @return ResponseBody, 使用指定的字符集编码.* @throws ConnectTimeoutException 建立链接超时异常* @throws SocketTimeoutException  响应超时* @throws Exception*/public static String post(String url, String body, String mimeType,String charset, Integer connTimeout, Integer readTimeout)throws ConnectTimeoutException, SocketTimeoutException, Exception {HttpClient client = null;HttpPost post = new HttpPost(url);String result = "";try {if (StringUtils.isNotBlank(body)) {HttpEntity entity = new StringEntity(body, ContentType.create(mimeType, charset));post.setEntity(entity);}// 设置参数Builder customReqConf = RequestConfig.custom();if (connTimeout != null) {customReqConf.setConnectTimeout(connTimeout);}if (readTimeout != null) {customReqConf.setSocketTimeout(readTimeout);}post.setConfig(customReqConf.build());HttpResponse res;if (url.startsWith("https")) {// 执行 Https 请求.client = createSSLInsecureClient();res = client.execute(post);} else {// 执行 Http 请求.client = HttpClientUtils.client;res = client.execute(post);}result = IOUtils.toString(res.getEntity().getContent(), charset);} finally {post.releaseConnection();if (url.startsWith("https") && client != null&& client instanceof CloseableHttpClient) {((CloseableHttpClient) client).close();}}return result;}/*** 提交form表单** @param url* @param params* @param connTimeout* @param readTimeout* @return* @throws ConnectTimeoutException* @throws SocketTimeoutException* @throws Exception*/public static String postForm(String url, Map<String, String> params, Map<String, String> headers, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,SocketTimeoutException, Exception {HttpClient client = null;HttpPost post = new HttpPost(url);try {if (params != null && !params.isEmpty()) {List<NameValuePair> formParams = new ArrayList<NameValuePair>();Set<Entry<String, String>> entrySet = params.entrySet();for (Entry<String, String> entry : entrySet) {formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));}UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);post.setEntity(entity);}if (headers != null && !headers.isEmpty()) {for (Entry<String, String> entry : headers.entrySet()) {post.addHeader(entry.getKey(), entry.getValue());}}// 设置参数Builder customReqConf = RequestConfig.custom();if (connTimeout != null) {customReqConf.setConnectTimeout(connTimeout);}if (readTimeout != null) {customReqConf.setSocketTimeout(readTimeout);}post.setConfig(customReqConf.build());HttpResponse res = null;if (url.startsWith("https")) {// 执行 Https 请求.client = createSSLInsecureClient();res = client.execute(post);} else {// 执行 Http 请求.client = HttpClientUtils.client;res = client.execute(post);}return IOUtils.toString(res.getEntity().getContent(), "UTF-8");} finally {post.releaseConnection();if (url.startsWith("https") && client != null&& client instanceof CloseableHttpClient) {((CloseableHttpClient) client).close();}}}/*** 发送一个 GET 请求*/public static String get(String url, String charset, Integer connTimeout,Integer readTimeout)throws ConnectTimeoutException,SocketTimeoutException, Exception {HttpClient client = null;HttpGet get = new HttpGet(url);String result = "";try {// 设置参数Builder customReqConf = RequestConfig.custom();if (connTimeout != null) {customReqConf.setConnectTimeout(connTimeout);}if (readTimeout != null) {customReqConf.setSocketTimeout(readTimeout);}get.setConfig(customReqConf.build());HttpResponse res = null;if (url.startsWith("https")) {// 执行 Https 请求.client = createSSLInsecureClient();res = client.execute(get);} else {// 执行 Http 请求.client = HttpClientUtils.client;res = client.execute(get);}result = IOUtils.toString(res.getEntity().getContent(), charset);} finally {get.releaseConnection();if (url.startsWith("https") && client != null && client instanceof CloseableHttpClient) {((CloseableHttpClient) client).close();}}return result;}/*** 从 response 里获取 charset*/@SuppressWarnings("unused")private static String getCharsetFromResponse(HttpResponse ressponse) {// Content-Type:text/html; charset=GBKif (ressponse.getEntity() != null  && ressponse.getEntity().getContentType() != null && ressponse.getEntity().getContentType().getValue() != null) {String contentType = ressponse.getEntity().getContentType().getValue();if (contentType.contains("charset=")) {return contentType.substring(contentType.indexOf("charset=") + 8);}}return null;}/*** 创建 SSL连接* @return* @throws GeneralSecurityException*/private static CloseableHttpClient createSSLInsecureClient() throws GeneralSecurityException {try {SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {public boolean isTrusted(X509Certificate[] chain,String authType) throws CertificateException {return true;}}).build();SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {@Overridepublic boolean verify(String arg0, SSLSession arg1) {return true;}@Overridepublic void verify(String host, SSLSocket ssl)throws IOException {}@Overridepublic void verify(String host, X509Certificate cert)throws SSLException {}@Overridepublic void verify(String host, String[] cns,String[] subjectAlts) throws SSLException {}});return HttpClients.custom().setSSLSocketFactory(sslsf).build();} catch (GeneralSecurityException e) {throw e;}}
}

3.3.2 添加回调接口获取access_token
在WeixinApiController 类添加回调方法

/*** 微信登录回调** @param code* @param state* @return*/
@RequestMapping("callback")
public String callback(String code, String state) {//获取授权临时票据System.out.println("微信授权服务器回调。。。。。。");System.out.println("state = " + state);System.out.println("code = " + code);if (StringUtils.isEmpty(state) || StringUtils.isEmpty(code)) {log.error("非法回调请求");throw new YyghException(ResultCodeEnum.ILLEGAL_CALLBACK_REQUEST_ERROR);}//使用code和appid以及appscrect换取access_tokenStringBuffer baseAccessTokenUrl = new StringBuffer().append("https://api.weixin.qq.com/sns/oauth2/access_token").append("?appid=%s").append("&secret=%s").append("&code=%s").append("&grant_type=authorization_code");String accessTokenUrl = String.format(baseAccessTokenUrl.toString(),ConstantPropertiesUtil.WX_OPEN_APP_ID,ConstantPropertiesUtil.WX_OPEN_APP_SECRET,code);String result = null;try {result = HttpClientUtils.get(accessTokenUrl);} catch (Exception e) {throw new YyghException(ResultCodeEnum.FETCH_ACCESSTOKEN_FAILD);}System.out.println("使用code换取的access_token结果 = " + result);JSONObject resultJson = JSONObject.parseObject(result);if(resultJson.getString("errcode") != null){log.error("获取access_token失败：" + resultJson.getString("errcode") + resultJson.getString("errmsg"));throw new YyghException(ResultCodeEnum.FETCH_ACCESSTOKEN_FAILD);}String accessToken = resultJson.getString("access_token");String openId = resultJson.getString("openid");log.info(accessToken);log.info(openId);//根据access_token获取微信用户的基本信息//先根据openid进行数据库查询// UserInfo userInfo = userInfoService.getByOpenid(openId);// 如果没有查到用户信息,那么调用微信个人信息获取的接口// if(null == userInfo){//如果查询到个人信息，那么直接进行登录//使用access_token换取受保护的资源：微信的个人信息String baseUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo" +"?access_token=%s" +"&openid=%s";String userInfoUrl = String.format(baseUserInfoUrl, accessToken, openId);String resultUserInfo = null;try {resultUserInfo = HttpClientUtils.get(userInfoUrl);} catch (Exception e) {throw new YyghException(ResultCodeEnum.FETCH_USERINFO_ERROR);}System.out.println("使用access_token获取用户信息的结果 = " + resultUserInfo);JSONObject resultUserInfoJson = JSONObject.parseObject(resultUserInfo);if(resultUserInfoJson.getString("errcode") != null){log.error("获取用户信息失败：" + resultUserInfoJson.getString("errcode") + resultUserInfoJson.getString("errmsg"));throw new YyghException(ResultCodeEnum.FETCH_USERINFO_ERROR);}//解析用户信息String nickname = resultUserInfoJson.getString("nickname");String headimgurl = resultUserInfoJson.getString("headimgurl");UserInfo userInfo = new UserInfo();userInfo.setOpenid(openId);userInfo.setNickName(nickname);userInfo.setStatus(1);userInfoService.save(userInfo);// }Map<String, Object> map = new HashMap<>();String name = userInfo.getName();if(StringUtils.isEmpty(name)) {name = userInfo.getNickName();}if(StringUtils.isEmpty(name)) {name = userInfo.getPhone();}map.put("name", name);if(StringUtils.isEmpty(userInfo.getPhone())) {map.put("openid", userInfo.getOpenid());} else {map.put("openid", "");}String token = JwtHelper.createToken(userInfo.getId(), name);map.put("token", token);return "redirect:" + ConstantPropertiesUtil.YYGH_BASE_URL + "/weixin/callback?token="+map.get("token")+"&openid="+map.get("openid")+"&name="+URLEncoder.encode((String)map.get("name"));
}

3.3.3 获取用户信息
3.3.3.1 根据openid查询用户是否已注册

1、UserInfoService类添加接口
/*** 根据微信openid获取用户信息* @param openid
* @return
*/
UserInfo getByOpenid(String openid);

2、UserInfoServiceImpl类添加接口实现

@Override
public UserInfo getByOpenid(String openid) {
return userInfoMapper.selectOne(new QueryWrapper<UserInfo>().eq("openid", openid));
}3.3.3.2 根据access_token获取用户信息
@Autowired
private UserInfoService userInfoService;
@RequestMapping("callback")
public String callback(String code, String state) {
//获取授权临时票据
...//根据access_token获取微信用户的基本信息//先根据openid进行数据库查询
UserInfo userInfo = userInfoService.getByOpenid(openId);
// 如果没有查到用户信息,那么调用微信个人信息获取的接口
if(null == userInfo){
//如果查询到个人信息，那么直接进行登录//使用access_token换取受保护的资源：微信的个人信息
String baseUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo"+
"?access_token=%s"+
"&openid=%s";String userInfoUrl = String.format(baseUserInfoUrl, accessToken, openId);String resultUserInfo = null;
try {resultUserInfo = HttpClientUtils.get(userInfoUrl);} catch (Exception e) {
throw new YyghException(ResultCodeEnum.FETCH_USERINFO_ERROR);}System.out.println("使用access_token获取用户信息的结果 = "+ resultUserInfo);JSONObject resultUserInfoJson = JSONObject.parseObject(resultUserInfo);
if(resultUserInfoJson.getString("errcode") != null){
log.error("获取用户信息失败："+ resultUserInfoJson.getString("errcode") + resultUserInfoJson.getString("errmsg"));
throw new YyghException(ResultCodeEnum.FETCH_USERINFO_ERROR);}//解析用户信息
String nickname = resultUserInfoJson.getString("nickname");String headimgurl = resultUserInfoJson.getString("headimgurl");userInfo = new UserInfo();userInfo.setOpenid(openId);userInfo.setNickName(nickname);userInfo.setStatus(1);
userInfoService.save(userInfo);}Map<String, Object> map = new HashMap<>();String name = userInfo.getName();
if(StringUtils.isEmpty(name)) {name = userInfo.getNickName();}
if(StringUtils.isEmpty(name)) {name = userInfo.getPhone();}map.put("name", name);
if(StringUtils.isEmpty(userInfo.getPhone())) {map.put("openid", userInfo.getOpenid());} else {map.put("openid", "");}String token = JwtHelper.createToken(userInfo.getId(), name);map.put("token", token);
return "redirect:"+ ConstantPropertiesUtil.YYGH_BASE_URL + "/weixin/callback?token="+map.get("token")+"&openid="+map.get("openid")+"&name="+URLEncoder.encode((String)map.get("name"));
}

说明：我们根据返回openid判断是否需要绑定手机号码，如果需要绑定，那么我们要根据openid用户用户信息，然后更新上手机号码

3.4 回调返回页面

操作：yygh-site
说明：我们只期望返回一个空页面，然后跟登录层通信就可以了，其实就是一个过渡页面，所以我们要给这个过渡页面定义一个空模板
3.4.1定义空模块
添加空模板组件：/layouts/empty.vue

<template>
<div>
<nuxt/>
</div>
</template>

3.4.2回调返回页面
根据返回路径/weixin/cakkback，我们创建组件/weixin/cakkback.vue

<template><!-- header --><div></div><!-- footer -->
</template>
<script>
export default {layout: "empty",data() {return {}},mounted() {let token = this.$route.query.tokenlet name = this.$route.query.namelet openid = this.$route.query.openid// 调用父vue方法window.parent['loginCallback'](name, token, openid)}
}
</script>

说明：在页面我们就能够接收到返回来的参数
3.4.3 父组件定义回调方法
在myheader.vue添加方法

  mounted() {// 注册全局登录事件对象window.loginEvent = new Vue();// 监听登录事件loginEvent.$on('loginDialogEvent', function () {document.getElementById("loginDialog").click();})// 触发事件，显示登录层：loginEvent.$emit('loginDialogEvent')//初始化微信jsconst script = document.createElement('script')script.type = 'text/javascript'script.src = 'https://res.wx.qq.com/connect/zh_CN/htmledition/js/wxLogin.js'document.body.appendChild(script)// 微信登录回调处理let self = this;window["loginCallback"] = (name,token, openid) => {self.loginCallback(name, token, openid);}},loginCallback(name, token, openid) {// 打开手机登录层，绑定手机号，改逻辑与手机登录一致if(openid != '') {this.userInfo.openid = openidthis.showLogin()} else {this.setCookies(name, token)}},

3.5 服务器绑定手机号码
页面绑定手机号码会把openid传递过来，我们根据openid找到用户信息，然后绑定手机号码
修改UserInfoServiceImpl类登录方法

@Override
public Map<String, Object> login(LoginVo loginVo) {String phone = loginVo.getPhone();String code = loginVo.getCode();//校验参数
if(StringUtils.isEmpty(phone) ||StringUtils.isEmpty(code)) {
throw new YyghException(ResultCodeEnum.PARAM_ERROR);}//校验校验验证码
String mobleCode = redisTemplate.opsForValue().get(phone);
if(!code.equals(mobleCode)) {
throw new YyghException(ResultCodeEnum.CODE_ERROR);}//绑定手机号码
UserInfo userInfo = null;
if(!StringUtils.isEmpty(loginVo.getOpenid())) {userInfo = this.getByOpenid(loginVo.getOpenid());
if(null != userInfo) {userInfo.setPhone(loginVo.getPhone());
this.updateById(userInfo);} else {
throw new YyghException(ResultCodeEnum.DATA_ERROR);}}//userInfo=null 说明手机直接登录
if(null == userInfo) {QueryWrapper<UserInfo> queryWrapper = new QueryWrapper<>();queryWrapper.eq("phone", phone);userInfo = userInfoMapper.selectOne(queryWrapper);
if(null == userInfo) {userInfo = new UserInfo();userInfo.setName("");userInfo.setPhone(phone);userInfo.setStatus(1);
this.save(userInfo);}}//校验是否被禁用
if(userInfo.getStatus() == 0) {
throw new YyghException(ResultCodeEnum.LOGIN_DISABLED_ERROR);}//记录登录
UserLoginRecord userLoginRecord = new UserLoginRecord();userLoginRecord.setUserId(userInfo.getId());userLoginRecord.setIp(loginVo.getIp());
userLoginRecordMapper.insert(userLoginRecord);//返回页面显示名称
Map<String, Object> map = new HashMap<>();String name = userInfo.getName();
if(StringUtils.isEmpty(name)) {name = userInfo.getNickName();}
if(StringUtils.isEmpty(name)) {name = userInfo.getPhone();}map.put("name", name);String token = JwtHelper.createToken(userInfo.getId(), name);map.put("token", token);
return map;
}