OAuth2实现微信登录

2024-04-28 16:08
文章标签 实现 微信 登录 oauth2

本文主要是介绍OAuth2实现微信登录，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

OAuth2实现微信登录

文章目录

        • 一、添加配置
        • 二、创建util包，创建ConstantPropertiesUtil.java常量类，读取配置信息
        • 三、生成二维码图片，当我们扫描后会获得一个code
        • 四、当登录成功，会获得code和state，回调到http://8150/api/ucenter/wx/callback？code=xx&state=xx
        • 五、导入HttpClientUtils这个工具类
        • 六、根据code调用微信特定方法获得access_token和openid
        • 七、根据access_token和openid访问微信特定函数，得到用户信息

一、添加配置
1  # 微信开放平台 appid
2 wx.open.app_id=wxed9954c01bb89b47 
3  # 微信开放平台 appsecret 
4 wx.open.app_secret=a7482517235173ddb4083788de60b90e 
5  # 微信开放平台 重定向url
6 wx.open.redirect_url=http://guli.shop/api/ucenter/wx/callback
二、创建util包，创建ConstantPropertiesUtil.java常量类，读取配置信息
package com.atguigu.eduservice.uitls;import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;/*** Author: noob* DATE: 2020/7/16 0016* PROJECT: guli_parent* DESCRIPTION: 读取配置文件的值**/
@Component
public class ConstanWxUtils  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;public static String WX_OPEN_APP_ID;public static String WX_OPEN_APP_SECRET;public static String WX_OPEN_REDIRECT_URL;@Overridepublic void afterPropertiesSet() throws Exception {WX_OPEN_APP_ID = appId;WX_OPEN_APP_SECRET = appSecret;WX_OPEN_REDIRECT_URL = redirectUrl;}
}
三、生成二维码图片，当我们扫描后会获得一个code
@GetMapping("login")public String getWxCode() {//固定地址，后面拼接参数
//        String url = "https://open.weixin.qq.com/" +
//                "connect/qrconnect?appid="+ ConstantWxUtils.WX_OPEN_APP_ID+"&response_type=code";// 微信开放平台授权baseUrl  %s相当于?代表占位符String baseUrl = "https://open.weixin.qq.com/connect/qrconnect" +"?appid=%s" +"&redirect_uri=%s" +"&response_type=code" +"&scope=snsapi_login" +"&state=%s" +"#wechat_redirect";//对redirect_url进行URLEncoder编码String redirectUrl = ConstanWxUtils.WX_OPEN_REDIRECT_URL;try {redirectUrl = URLEncoder.encode(redirectUrl, "utf-8");}catch(Exception e) {}//设置%s里面值String url = String.format(baseUrl,ConstanWxUtils.WX_OPEN_APP_ID,redirectUrl,"atguigu");//重定向到请求微信地址里面return "redirect:"+url;}
四、当登录成功，会获得code和state，回调到http://8150/api/ucenter/wx/callback？code=xx&state=xx
五、导入HttpClientUtils这个工具类
package com.atguigu.eduservice.uitls;import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.config.RequestConfig.Builder;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;/***  依赖的jar包有：commons-lang-2.6.jar、httpclient-4.3.2.jar、httpcore-4.3.1.jar、commons-io-2.4.jar* @author zhaoyb**/
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** @param url* @param charset* @param connTimeout  建立链接超时时间,毫秒.* @param readTimeout  响应超时时间,毫秒.* @return* @throws ConnectTimeoutException   建立链接超时* @throws SocketTimeoutException   响应超时* @throws Exception*/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** @param ressponse* @return*/@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;}}public static void main(String[] args) {try {String str= post("https://localhost:443/ssl/test.shtml","name=12&page=34","application/x-www-form-urlencoded", "UTF-8", 10000, 10000);//String str= get("https://localhost:443/ssl/test.shtml?name=12&page=34","GBK");/*Map<String,String> map = new HashMap<String,String>();map.put("name", "111");map.put("page", "222");String str= postForm("https://localhost:443/ssl/test.shtml",map,null, 10000, 10000);*/System.out.println(str);} catch (ConnectTimeoutException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (SocketTimeoutException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
六、根据code调用微信特定方法获得access_token和openid
try {//1 获取code值，临时票据，类似于验证码//2 拿着code请求 微信固定的地址，得到两个值 accsess_token 和 openidString baseAccessTokenUrl = "https://api.weixin.qq.com/sns/oauth2/access_token" +"?appid=%s" +"&secret=%s" +"&code=%s" +"&grant_type=authorization_code";//拼接三个参数 ：id  秘钥 和 code值String accessTokenUrl = String.format(baseAccessTokenUrl,ConstanWxUtils.WX_OPEN_APP_ID,ConstanWxUtils.WX_OPEN_APP_SECRET,code);//请求这个拼接好的地址，得到返回两个值 accsess_token 和 openid//使用httpclient发送请求，得到返回结果String accessTokenInfo = HttpClientUtils.get(accessTokenUrl);//从accessTokenInfo字符串获取出来两个值 accsess_token 和 openid//把accessTokenInfo字符串转换map集合，根据map里面key获取对应值//使用json转换工具 GsonGson gson = new Gson();HashMap mapAccessToken = gson.fromJson(accessTokenInfo, HashMap.class);String access_token = (String)mapAccessToken.get("access_token");String openid = (String)mapAccessToken.get("openid");
七、根据access_token和openid访问微信特定函数，得到用户信息
/把扫描人信息添加数据库里面//判断数据表里面是否存在相同微信信息，根据openid判断UcenterMember member = memberService.getOpenIdMember(openid);if(member == null) {//memeber是空，表没有相同微信数据，进行添加//3 拿着得到accsess_token 和 openid，再去请求微信提供固定的地址，获取到扫描人信息//访问微信的资源服务器，获取用户信息String baseUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo" +"?access_token=%s" +"&openid=%s";//拼接两个参数String userInfoUrl = String.format(baseUserInfoUrl,access_token,openid);//发送请求String userInfo = HttpClientUtils.get(userInfoUrl);//获取返回userinfo字符串扫描人信息HashMap userInfoMap = gson.fromJson(userInfo, HashMap.class);String nickname = (String)userInfoMap.get("nickname");//昵称String headimgurl = (String)userInfoMap.get("headimgurl");//头像member = new UcenterMember();member.setOpenid(openid);member.setNickname(nickname);member.setAvatar(headimgurl);memberService.save(member);}//使用jwt根据member对象生成token字符串String jwtToken = JwtUtils.getJwtToken(member.getId(), member.getNickname());//最后：返回首页面，通过路径传递token字符串return "redirect:http://localhost:3000?token="+jwtToken;}catch(Exception e) {throw new GuliException(20001,"登录失败");}

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