springboot 微信授权网页登录操作流程

springboot 微信授权网页登录操作流程

操作流程

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）：

/**

*/

@RequestMapping("/wxLogin")

public void wxLogin(HttpServletResponse response) throws IOException {

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

/**

*/

@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_2sgVtjckwsQBxzl7hMZOPfL"

}

*/

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 {

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 http://= "";

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(StjckwsQBxzlring 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.appjckwsQBxzlend("\r\n");

}

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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