微信授权登录(扫码登录)--源码
2024-05-08 08:12:32
目录
一.编码前准备工作
二.源码
1.WXConstants
2.HttpRequestUtils
3.WXLogin
一.编码前准备工作
1.打开微信开放平台https://open.weixin.qq.com/，注册并认证账号，必须通过企业注册
2.登录微信开放平台并在管理中心创建网站应用提交审核，审核通知之口通过查看详情可获得AppID和AppSecret
3.进行编码
二.源码
1.WXConstants
public class WXConstants {// 微信开放平台创建的网站应用的appsecretpublic static final String APPSECRET = "1b97ce0a29cc41e2abb66096";// 微信开放平台创建的网站应用的appidpublic static final String APPID = "wxf060e68596d5";public static final String SCOPE = "snsapi_login";// 微信开放平台创建的网站 设置的授权回调域public static final String DOMAIN_NAME = "http://196.29.119.38";
}2.HttpRequestUtils
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
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 java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;public class HttpRequestUtils {private static CloseableHttpClient httpClient;static {PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();connectionManager.setMaxTotal(100);connectionManager.setDefaultMaxPerRoute(20);connectionManager.setDefaultMaxPerRoute(50);httpClient = HttpClients.custom().setConnectionManager(connectionManager).build();}public static String get(String url) {CloseableHttpResponse response = null;BufferedReader in = null;String result = "";try {HttpGet httpGet = new HttpGet(url);RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(30000).setConnectionRequestTimeout(30000).setSocketTimeout(30000).build();httpGet.setConfig(requestConfig);httpGet.addHeader("Content-type", "application/json; charset=utf-8");httpGet.setHeader("Accept", "application/json");response = httpClient.execute(httpGet);in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));StringBuffer sb = new StringBuffer("");String line = "";String NL = System.getProperty("line.separator");while ((line = in.readLine()) != null) {sb.append(line + NL);}in.close();result = sb.toString();} catch (IOException e) {e.printStackTrace();} finally {try {if (null != response) {response.close();}} catch (IOException e) {e.printStackTrace();}}return result;}public static String post(String url, String jsonString) {CloseableHttpResponse response = null;BufferedReader in = null;String result = "";try {HttpPost httpPost = new HttpPost(url);RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(30000).setConnectionRequestTimeout(30000).setSocketTimeout(30000).build();httpPost.setConfig(requestConfig);httpPost.setConfig(requestConfig);httpPost.addHeader("Content-type", "application/json; charset=utf-8");httpPost.setHeader("Accept", "application/json");httpPost.setEntity(new StringEntity(jsonString, Charset.forName("UTF-8")));response = httpClient.execute(httpPost);in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));StringBuffer sb = new StringBuffer("");String line = "";String NL = System.getProperty("line.separator");while ((line = in.readLine()) != null) {sb.append(line + NL);}in.close();result = sb.toString();} catch (IOException e) {e.printStackTrace();} finally {try {if (null != response) {response.close();}} catch (IOException e) {e.printStackTrace();}}return result;}}3.WXLogin
import java.io.PrintWriter;
import java.net.URLEncoder;import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.commons.lang3.StringUtils;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;import com.alibaba.fastjson.JSON;
import com.hongedu.ttms.ttms.commons.constant.EntityTrainingSystemConstants;
import com.hongedu.ttms.ttms.entity.User;
import com.hongedu.ttms.ttms.service.UserService;
import com.hongedu.ttms.ttms.web.front.index.FrontLoginController;
import com.hongedu.ttms.util.shiro.ShiroUser;/*** * _ooOoo_* o8888888o* 88" . "88* (| -_- |)* O\ = /O* ____/`---'\____* .' \\| |// `.* / \\||| : |||// \* / _||||| -:- |||||- \* | | \\\ - /// | |* | \_| ''\---/'' | |* \ .-\__ `-` ___/-. /* ___`. .' /--.--\ `. . __* ."" '< `.___\_<|>_/___.' >'"".* | | : `- \`.;`\ _ /`;.`/ - ` : | |* \ \ `-. \_ __\ /__ _/ .-` / /* ======`-.____`-.___\_____/___.-`____.-'======* `=---='* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^* 佛祖保佑 永无BUG*/
@Controller
@RequestMapping("/front/wxQr")
public class WXLogin extends HttpServlet{private static final long serialVersionUID = 1L;private final static Logger logger= LoggerFactory.getLogger(WXLogin.class);@Autowiredprivate UserService userService;/**1.授权*/@RequestMapping("/wxAuth")public void wxAuth (HttpServletRequest request,HttpServletResponse response) {try {String url = "https://open.weixin.qq.com/connect/qrconnect?"+ "appid=APPID"+ "&redirect_uri=REDIRECT_URI"+ "&response_type=code"+ "&scope=SCOPE"+ "&state=STATE#wechat_redirect";String callBack = WXConstants.DOMAIN_NAME + "/front/wxQr/callBack";String redirect_uri = URLEncoder.encode(callBack, "UTF-8");url = url.replace("APPID", WXConstants.APPID).replace("REDIRECT_URI", redirect_uri).replace("SCOPE", WXConstants.SCOPE);response.sendRedirect(url);} catch (Exception e) {e.printStackTrace();}}/** 2.回调,获取到openId&unionId */@RequestMapping("/callBack")public void callBack(HttpServletRequest request,HttpServletResponse response,String code,String state,User loginUser){try {logger.info("进入授权回调,code:{},state:{}",code,state);//1.通过code获取access_tokenJSONObject accessToken = this.getAccessToken(code);@SuppressWarnings("unused")//2.通过access_token和openid(unionId)获取用户信息JSONObject userInfo = this.getUserInfo(accessToken);//3.通过unionId检测是否绑定微信this.accountBinding(loginUser,accessToken,request, response);} catch (Exception e) {e.printStackTrace();}}/** 获取微信用户信息*/private JSONObject getUserInfo(JSONObject accessToken) {String url = "https://api.weixin.qq.com/sns/userinfo?"+ "access_token=ACCESS_TOKEN&"+ "openid=OPENID";url = url.replace("ACCESS_TOKEN",accessToken.getString("access_token")).replace("OPENID",accessToken.getString("openid"));String user = HttpRequestUtils.get(url);logger.info("userInfo:{}",user);JSONObject userInfo = new JSONObject(user);return userInfo;}/**获取access_token*/private JSONObject getAccessToken(String code) {String url = "https://api.weixin.qq.com/sns/oauth2/access_token?"+ "appid=APPID"+ "&secret=SECRET"+ "&code=CODE"+ "&grant_type=authorization_code";url = url.replace("APPID",WXConstants.APPID).replace("SECRET",WXConstants.APPSECRET).replace("CODE",code);String tokenInfo = HttpRequestUtils.get(url);JSONObject accessToken = new JSONObject(tokenInfo);logger.info("accessToken:{}",accessToken);return accessToken;}public void accountBinding(User loginUser, JSONObject accessToken, HttpServletRequest request,HttpServletResponse response) {try {String openId = accessToken.getString("openid");String unionId = accessToken.getString("unionid");String url;PrintWriter out = response.getWriter();User user = this.checkUserByUnionId(unionId);if (user != null && StringUtils.isNotEmpty(user.getUnionId())) {this.saveLoginInfo(user, request);if (user.getRoleId()==EntityTrainingSystemConstants.EXPERT) {url = "/expert/index";out.println("<html><script>");out.println("window.open ('" + url + "','_top')");out.println("</script></html>");}else if (user.getRoleId()==EntityTrainingSystemConstants.TRAINEE) {url = "/person/projectIndex/index";out.println("<html><script>");out.println("window.open ('" + url + "','_top')");out.println("</script></html>");}} else {url = "/front/wxQr/binding";User userInfo = new User();userInfo.setOpenId(openId);userInfo.setUnionId(unionId);Cookie userCookie = new Cookie("user", JSON.toJSONString(userInfo));response.addCookie(userCookie);logger.info("userCookie:{}",userCookie);out.println("<html><script>");out.println("window.open ('" + url + "','_top')");out.println("</script></html>");}out.close();} catch (Exception e) {e.printStackTrace();}}private void saveLoginInfo(User loginUser, HttpServletRequest request) {try {FrontLoginController login = new FrontLoginController();Subject currentUser = login.Authenticated(loginUser.getUsername(), loginUser.getPassword());ShiroUser shirouser = (ShiroUser) SecurityUtils.getSubject().getPrincipal();if (EntityTrainingSystemConstants.TRAINEE == loginUser.getRoleId()|| EntityTrainingSystemConstants.EXPERT == loginUser.getRoleId()) {login.saveLoginInfo(request, currentUser, shirouser);}} catch (Exception e) {e.printStackTrace();}}private User checkUserByUnionId(String unionId) { return userService.getUserByUnionId(unionId);}@RequestMapping("/binding")public String binding(String unionId,String openId,Model model) {model.addAttribute("unionId", unionId).addAttribute("openId", openId);return "/front/wxQr/binding";}
}
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