java lograr QQ de acceso a Internet

preparativos

1. servidor de la nube

2. La presentación de nombre de dominio

3. necesidad de depuración local para modificar el archivo hosts para asignar nombres de dominio a 127.0.0.1

En primer lugar, la aplicación de Internet QQ y convertirse en un desarrollador
QQ Internet: https://connect.qq.com/index.html

Después de iniciar la sesión, haga clic en el avatar, entrar en la página de autenticación, complete la información, pendiente de revisión.

Después de la aprobación, haga clic en Crear aplicación

A través de la auditoría, se puede utilizar el ID de APP y APP clave

En segundo lugar, el código de Java escritura

estructura del proyecto

YML 配置

server:
  port: 80
 
qq:
  oauth:
    http: //QQ互联中填写的网站地址

Importación pom dependencia

<!--httpclient-->
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.6</version>
</dependency>
<!--阿里 JSON-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.47</version>
</dependency>

QQController

package com.ck.blog.controller;
 
import com.alibaba.fastjson.JSONObject;
import com.ck.blog.exception.StateErrorException;
import com.ck.blog.utils.QQHttpClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.net.URLEncoder;
import java.util.UUID;
 
/**
 * @author ck
 * @create 2019-05-18 20:32
 */
@Controller
public class QQController {
 
 
    @Value("${qq.oauth.http}")
    private String http;
 
    /**
     * 发起请求
     * @param session
     * @return
     */
    @GetMapping("/qq/oauth")
    public String qq(HttpSession session){
        //QQ互联中的回调地址
        String backUrl = http + "/qq/callback";
 
        //用于第三方应用防止CSRF攻击
        String uuid = UUID.randomUUID().toString().replaceAll("-","");
        session.setAttribute("state",uuid);
 
        //Step1：获取Authorization Code
        String url = "https://graph.qq.com/oauth2.0/authorize?response_type=code"+
                "&client_id=" + QQHttpClient.APPID +
                "&redirect_uri=" + URLEncoder.encode(backUrl) +
                "&state=" + uuid;
 
        return "redirect:" + url;
    }
 
    /**
     * QQ回调
     * @param request
     * @return
     */
    @GetMapping("/qq/callback")
    public String qqcallback(HttpServletRequest request) throws Exception {
        HttpSession session = request.getSession();
 
        String code = request.getParameter("code");
        String state = request.getParameter("state");
        String uuid = (String) session.getAttribute("state");
 
        if(uuid != null){
            if(!uuid.equals(state)){
                throw new StateErrorException("QQ,state错误");
            }
        }
 
 
        //Step2：通过Authorization Code获取Access Token
        String backUrl = http + "/qq/callback";
        String url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code"+
                "&client_id=" + QQHttpClient.APPID +
                "&client_secret=" + QQHttpClient.APPKEY +
                "&code=" + code +
                "&redirect_uri=" + backUrl;
 
        String access_token = QQHttpClient.getAccessToken(url);
 
        //Step3: 获取回调后的 openid 值
        url = "https://graph.qq.com/oauth2.0/me?access_token=" + access_token;
        String openid = QQHttpClient.getOpenID(url);
 
        //Step4：获取QQ用户信息
        url = "https://graph.qq.com/user/get_user_info?access_token=" + access_token +
                "&oauth_consumer_key="+ QQHttpClient.APPID +
                "&openid=" + openid;
 
        JSONObject jsonObject = QQHttpClient.getUserInfo(url);
 
        //也可以放到Redis和mysql中
        session.setAttribute("openid",openid);  //openid,用来唯一标识qq用户
        session.setAttribute("nickname",(String)jsonObject.get("nickname")); //QQ名
        session.setAttribute("figureurl_qq_2",(String)jsonObject.get("figureurl_qq_2")); //大小为100*100像素的QQ头像URL
 
 
        return "redirect:/home";
    }
 
}

IndexController

package com.ck.blog.controller;
 
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
 
import javax.servlet.http.HttpSession;
 
/**
 * @author ck
 * @create 2019-05-18 20:31
 */
@Controller
public class IndexController {
 
    @GetMapping("/index")
    public String index(){
        return "index";
    }
 
    @GetMapping("/home")
    public String home(HttpSession session, Model model){
        String openid = (String) session.getAttribute("openid");
        String nickname = (String) session.getAttribute("nickname");
        String figureurl_qq_2 = (String) session.getAttribute("figureurl_qq_2");
 
        model.addAttribute("openid",openid);
        model.addAttribute("nickname",nickname);
        model.addAttribute("figureurl_qq_2",figureurl_qq_2);
 
        return "home";
    }
}

QQHttpClient

package com.ck.blog.utils;
 
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
 
import java.io.IOException;
 
/**
 * @author ck
 * @create 2019-05-18 20:32
 * QQ工具类（主要用于解析QQ返回的信息）
 */
public class QQHttpClient {
    //QQ互联中提供的 appid 和 appkey
    public static final String APPID = "xxxxxxxx";
 
    public static final String APPKEY = "xxxxxxxxxx";
 
 
    private static JSONObject parseJSONP(String jsonp){
        int startIndex = jsonp.indexOf("(");
        int endIndex = jsonp.lastIndexOf(")");
 
        String json = jsonp.substring(startIndex + 1,endIndex);
 
        return JSONObject.parseObject(json);
    }
 
    public static String getAccessToken(String url) throws IOException {
        CloseableHttpClient client = HttpClients.createDefault();
        String token = null;
 
        HttpGet httpGet = new HttpGet(url);
        HttpResponse response = client.execute(httpGet);
        HttpEntity entity = response.getEntity();
 
        if(entity != null){
            String result = EntityUtils.toString(entity,"UTF-8");
            if(result.indexOf("access_token") >= 0){
                String[] array = result.split("&");
                for (String str : array){
                    if(str.indexOf("access_token") >= 0){
                        token = str.substring(str.indexOf("=") + 1);
                        break;
                    }
                }
            }
        }
 
        httpGet.releaseConnection();
        return token;
    }
 
    public static String getOpenID(String url) throws IOException {
        JSONObject jsonObject = null;
        CloseableHttpClient client = HttpClients.createDefault();
 
        HttpGet httpGet = new HttpGet(url);
        HttpResponse response = client.execute(httpGet);
        HttpEntity entity = response.getEntity();
 
        if(entity != null){
            String result = EntityUtils.toString(entity,"UTF-8");
            jsonObject = parseJSONP(result);
        }
 
        httpGet.releaseConnection();
 
        if(jsonObject != null){
            return jsonObject.getString("openid");
        }else {
            return null;
        }
    }
 
    public static JSONObject getUserInfo(String url) throws IOException {
        JSONObject jsonObject = null;
        CloseableHttpClient client = HttpClients.createDefault();
 
        HttpGet httpGet = new HttpGet(url);
        HttpResponse response = client.execute(httpGet);
        HttpEntity entity = response.getEntity();
 
 
        if(entity != null){
            String result = EntityUtils.toString(entity,"UTF-8");
            jsonObject = JSONObject.parseObject(result);
        }
 
        httpGet.releaseConnection();
 
        return jsonObject;
    }
}

index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>登录页</title>
</head>
<body>
<a href="/qq/oauth">QQ授权登录</a>
</body>
</html>

home.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>QQ授权成功</title>
</head>
<body>
<div>
    openid:[[${openid}]]
</div>
<div>
    nickName:[[${nickname}]]
</div>
<div>
    <img th:src="${figureurl_qq_2}">
</div>
</body>
</html>

representaciones