springboot 微信授权网页登录操作流程

2023-07-12 11:38:04 71

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：

（1）引导用户进入授权页面同意授权，获取code

（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

提示：以下是本篇文章正文内容，下面案例可供参考

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")
publicvoidwxLogin(HttpServletResponseresponse)throwsIOException{
//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
StringbackUrl="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_basesnsapi_userinfo
Stringurl="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")
publicUserLoginRescallback(HttpServletRequestreq,HttpServletResponseresp)throwsServletException,IOException{
UserLoginResuserLoginRes=newUserLoginRes();
try{
WXUserInfoReqweixinUserInfo=newWXUserInfoReq();
/*start获取微信用户基本信息*/
Stringcode=req.getParameter("code");
//第二步：通过code换取网页授权access_token
Stringurl="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);

Stringresult=HttpClientUtil.doGet(url);
JSONObjectjsonObject=JSON.parseObject(result);

/*
{"access_token":"ACCESS_TOKEN",
"expires_in":7200,
"refresh_token":"REFRESH_TOKEN",
"openid":"OPENID",
"scope":"SCOPE"
}
*/
Stringopenid=jsonObject.getString("openid");
Stringaccess_token=jsonObject.getString("access_token");

//第三步验证access_token是否失效；
StringchickUrl="https://api.weixin.qq.com/sns/auth?access_token="
+access_token+"&openid="+openid;
StringresultInfo=HttpClientUtil.doGet(chickUrl);
JSONObjectchickuserInfo=JSON.parseObject(resultInfo);
System.out.println(chickuserInfo.toString());
if(!"0".equals(chickuserInfo.getString("errcode"))){
StringrefreshInfo1=HttpClientUtil.doGet(chickUrl);
JSONObjectrefreshInfo=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
StringinfoUrl="https://api.weixin.qq.com/sns/userinfo?access_token="+access_token
+"&openid="+openid
+"&lang=zh_CN";
JSONObjectuserInfo=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(Exceptione){
e.printStackTrace();
userLoginRes.setResult("NO");
userLoginRes.setRtnErrId("ERROR");
userLoginRes.setRtnErrMsg(e.getMessage());
}
returnuserLoginRes;
}

使用到的HttpClientUtil工具类

代码如下（示例）：

publicclassHttpClientUtil{
//appid、secret为自己公众号平台的appid和secret
publicstaticfinalStringAPPID="xxxxxxx";
publicstaticfinalStringAPPSECRET="xxxxxxx";

publicstaticStringdoGet(Stringurl,Mapparam){
//创建Httpclient对象
CloseableHttpClienthttpclient=HttpClients.createDefault();

StringresultString="";
CloseableHttpResponseresponse=null;
HttpGethttpGet=null;
try{
//创建uri
URIBuilderbuilder=newURIBuilder(url);
if(param!=null){
for(Stringkey:param.keySet()){
builder.addParameter(key,param.get(key));
}
}
URIuri=builder.build();
//创建httpGET请求
httpGet=newHttpGet(uri);
httpGet.setHeader("Host","api.weixin.qq.com");
httpGet.setHeader("User-Agent","Mozilla/5.0(WindowsNT6.1;WOW64;Trident/7.0;rv:11.0)likeGecko");
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(Exceptione){
e.printStackTrace();
}finally{
try{
if(response!=null){
response.close();
}
httpGet.releaseConnection();
httpclient.close();
}catch(IOExceptione){
e.printStackTrace();
}
}
returnresultString;
}

publicstaticStringdoGet(Stringurl){
returndoGet(url,null);
}

publicstaticStringdoPost(Stringurl,Mapparam){
//创建Httpclient对象
CloseableHttpClienthttpClient=HttpClients.createDefault();
CloseableHttpResponseresponse=null;
StringresultString="";
try{
//创建HttpPost请求
HttpPosthttpPost=newHttpPost(url);
//创建参数列表
if(param!=null){
ListparamList=newArrayList<>();
for(Stringkey:param.keySet()){
paramList.add(newBasicNameValuePair(key,param.get(key)));
}
//模拟表单
UrlEncodedFormEntityentity=newUrlEncodedFormEntity(paramList);
httpPost.setEntity(entity);
}
//执行http请求
response=httpClient.execute(httpPost);
resultString=EntityUtils.toString(response.getEntity(),"utf-8");
}catch(Exceptione){
e.printStackTrace();
}finally{
try{
response.close();
}catch(IOExceptione){
e.printStackTrace();
}
}

returnresultString;
}

publicstaticStringdoPost(Stringurl){
returndoPost(url,null);
}

publicstaticStringdoPostJson(Stringurl,Stringjson){
//创建Httpclient对象
CloseableHttpClienthttpClient=HttpClients.createDefault();
CloseableHttpResponseresponse=null;
StringresultString="";
try{
//创建HttpPost请求
HttpPosthttpPost=newHttpPost(url);
//创建请求内容
StringEntityentity=newStringEntity(json,ContentType.APPLICATION_JSON);
httpPost.setEntity(entity);
//执行http请求
response=httpClient.execute(httpPost);
resultString=EntityUtils.toString(response.getEntity(),"utf-8");
}catch(Exceptione){
e.printStackTrace();
}finally{
try{
response.close();
}catch(IOExceptione){
e.printStackTrace();
}
}
returnresultString;
}

publicstaticStringdoGetStr(Stringhttpurl){
HttpURLConnectionconnection=null;
InputStreamis=null;
BufferedReaderbr=null;
Stringresult=null;//返回结果字符串
try{
//创建远程url连接对象
URLurl=newURL(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(WindowsNT6.1;WOW64;Trident/7.0;rv:11.0)likeGecko");
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=newBufferedReader(newInputStreamReader(is,"UTF-8"));
//存放数据
StringBuffersbf=newStringBuffer();
Stringtemp=null;
while((temp=br.readLine())!=null){
sbf.append(temp);
sbf.append("\r\n");
}
result=sbf.toString();
}
}catch(MalformedURLExceptione){
e.printStackTrace();
}catch(IOExceptione){
e.printStackTrace();
}finally{
//关闭资源
if(null!=br){
try{
br.close();
}catch(IOExceptione){
e.printStackTrace();
}
}
if(null!=is){
try{
is.close();
}catch(IOExceptione){
e.printStackTrace();
}
}
connection.disconnect();//关闭远程连接
}
returnresult;
}

}

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
UserInfoModeluserInfoByWechat=iUserDao.getUserInfoByWechat(userInfoStr.get("unionid").toString());
if(userInfoByWechat!=null){
returnReturnMessage.success(0,"获取成功",userInfoByWechat);
}
//4.数据库添加用户信息
Stringusername=userInfoStr.get("nickname").toString();
Stringunionid=userInfoStr.get("unionid").toString();
UserInfoBeanuserInfoBean=newUserInfoBean();
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
UserInfoModeluserInfoModel=iUserDao.getUserInfoByWechat(unionid);
if(userInfoModel==null){
returnReturnMessage.fail(400,"用户添加失败，请重新操作");
}

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