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Springboot网站第三方登录 微信登录

作者:摩天轮丶

这篇文章主要为大家详细介绍了Springboot网站第三方登录 ,微信登录,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

微信开放平台接入,官网:https://open.weixin.qq.com,在官网注册并添加应用后即可获得APP_ID和APP_SECRET。

步骤一:创建一个继承AuthService的接口,WeChatAuthService,如下

public interface WeChatAuthService extends AuthService {
 public JSONObject getUserInfo(String accessToken, String openId);
}

步骤二:WeChatService的具体实现如下

@Service
public class WeChatAuthServiceImpl extends DefaultAuthServiceImpl implements WeChatAuthService {

 private Logger logger = LoggerFactory.getLogger(WeChatAuthServiceImpl.class);

//请求此地址即跳转到二维码登录界面
 private static final String AUTHORIZATION_URL =
   "https://open.weixin.qq.com/connect/qrconnect?appid=%s&redirect_uri=%s&response_type=code&scope=%s&state=%s#wechat_redirect";

 // 获取用户 openid 和access——toke 的 URL
 private static final String ACCESSTOKE_OPENID_URL =
   "https://api.weixin.qq.com/sns/oauth2/access_token?appid=%s&secret=%s&code=%s&grant_type=authorization_code";

 private static final String REFRESH_TOKEN_URL =
   "https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=%s&grant_type=refresh_token&refresh_token=%s";

 private static final String USER_INFO_URL =
   "https://api.weixin.qq.com/sns/userinfo?access_token=%s&openid=%s&lang=zh_CN";

 private static final String APP_ID="xxxxxx";
 private static final String APP_SECRET="xxxxxx";
 private static final String SCOPE = "snsapi_login";

 private String callbackUrl = "https://www.xxx.cn/auth/wechat"; //回调域名

 @Override
 public String getAuthorizationUrl() throws UnsupportedEncodingException {
  callbackUrl = URLEncoder.encode(callbackUrl,"utf-8");
  String url = String.format(AUTHORIZATION_URL,APP_ID,callbackUrl,SCOPE,System.currentTimeMillis());
  return url;
 }


 @Override
 public String getAccessToken(String code) {
  String url = String.format(ACCESSTOKE_OPENID_URL,APP_ID,APP_SECRET,code);

  UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url);
  URI uri = builder.build().encode().toUri();

  String resp = getRestTemplate().getForObject(uri, String.class);
  logger.error("getAccessToken resp = "+resp);
  if(resp.contains("openid")){
   JSONObject jsonObject = JSONObject.parseObject(resp);
   String access_token = jsonObject.getString("access_token");
   String openId = jsonObject.getString("openid");;

   JSONObject res = new JSONObject();
   res.put("access_token",access_token);
   res.put("openId",openId);
   res.put("refresh_token",jsonObject.getString("refresh_token"));

   return res.toJSONString();
  }else{
   throw new ServiceException("获取token失败,msg = "+resp);
  }
 }

 //微信接口中,token和openId是一起返回,故此方法不需实现
 @Override
 public String getOpenId(String accessToken) {
  return null;
 }

 @Override
 public JSONObject getUserInfo(String accessToken, String openId){
  String url = String.format(USER_INFO_URL, accessToken, openId);
  UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url);
  URI uri = builder.build().encode().toUri();

  String resp = getRestTemplate().getForObject(uri, String.class);
  logger.error("getUserInfo resp = "+resp);
  if(resp.contains("errcode")){
   throw new ServiceException("获取用户信息错误,msg = "+resp);
  }else{
   JSONObject data =JSONObject.parseObject(resp);

   JSONObject result = new JSONObject();
   result.put("id",data.getString("unionid"));
   result.put("nickName",data.getString("nickname"));
   result.put("avatar",data.getString("headimgurl"));

   return result;
  }
 }

 //微信的token只有2小时的有效期,过时需要重新获取,所以官方提供了
 //根据refresh_token 刷新获取token的方法,本项目仅仅是获取用户
 //信息,并将信息存入库,所以两个小时也已经足够了
 @Override
 public String refreshToken(String refresh_token) {

  String url = String.format(REFRESH_TOKEN_URL,APP_ID,refresh_token);

  UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url);
  URI uri = builder.build().encode().toUri();

  ResponseEntity<JSONObject> resp = getRestTemplate().getForEntity(uri,JSONObject.class);
  JSONObject jsonObject = resp.getBody();

  String access_token = jsonObject.getString("access_token");
  return access_token;
 }
}

步骤三:

在Controller中调用,代码如下:

@RequestMapping(value = "/wxLoginPage",method = RequestMethod.GET)
 public JSONObject wxLoginPage() throws Exception {
  String uri = weChatAuthService.getAuthorizationUrl();
  return loginPage(uri);
 }

 @RequestMapping(value = "/wechat")
 public void callback(String code,HttpServletRequest request,HttpServletResponse response) throws Exception {
  String result = weChatAuthService.getAccessToken(code);
  JSONObject jsonObject = JSONObject.parseObject(result);

  String access_token = jsonObject.getString("access_token");
  String openId = jsonObject.getString("openId");
//  String refresh_token = jsonObject.getString("refresh_token");

  // 保存 access_token 到 cookie,两小时过期
  Cookie accessTokencookie = new Cookie("accessToken", access_token);
  accessTokencookie.setMaxAge(60 *2);
  response.addCookie(accessTokencookie);

  Cookie openIdCookie = new Cookie("openId", openId);
  openIdCookie.setMaxAge(60 *2);
  response.addCookie(openIdCookie);

  //根据openId判断用户是否已经登陆过
  KmsUser user = userService.getUserByCondition(openId);

  if (user == null) {
   response.sendRedirect(request.getContextPath() + "/student/html/index.min.html#/bind?type="+Constants.LOGIN_TYPE_WECHAT);
  } else {
   //如果用户已存在,则直接登录
   response.sendRedirect(request.getContextPath() + "/student/html/index.min.html#/app/home?open_id=" + openId);
  }
 }

步骤四:

前台js中,先请求auth/wxLoginPage,获取授权地址,等用户授权后会回调/auth/wechat,在此方法中进行逻辑处理即可。

遇到过的坑:

1.在微信官网中配置回调域名的时候,不需要些http或https协议,只需要写上域即可,例如http://baidu.com,只需要填写baidu.com即可,如果是想要跳转到项目下面的某个Controller的某个方法中,如baidu.com/auth/wechat ,配置的时候也只需要配baidu.com,不需要指定后面的auth/wechat,后面的地址在代码中配置回调的地址的时候写上即可,代码中应该配置为https://baidu.com/auth/wechat
2.在跳转到授权二维码界面的时候,会遇到有的时候二维码出不来的状况,这是因为代码中的回调地址的问题,按照上面代码中的方式配置应该是没有问题的

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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