【Spring Boot 8】Okhttp实现GitHub第三方登录

柔情只为你懂 2021-08-26 23:27 546阅读 0赞

最近一直在学习springboot，刚刚看完雷丰阳老师讲的springboot基础、整合视频，相见恨晚的赶脚，顺理成章的看了尚硅谷的springboot谷粒商城项目视频，但是，有种说不出的感觉，看了16节，还是放弃了，在bilibili上又搜索了一番，找到了现在学习的这个视频，码匠社区项目，看了几节，感觉还可以，项目中用到了GitHub第三方登录，第一次接触，感觉挺好用的，自然要写篇博客记录一下啦。

# 一、基本概念 #

OkHTTP：HTTP是现代应用程序网络的方式，也就是我们交换数据和媒体的方式，有效地执行HTTP可使您的内容加载更快更节省带宽。

## 1、OkHTTP是默认情况下有效的HTTP客户端 ##

（1）HTTP/2支持允许对同一主机的所有请求共享一个套接字。

（2）连接池可减少请求延迟

（3）透明的GZIP缩小了下载大小

（4）响应缓存可以完全避免网络重复请求

## 2、GitHub OAuth APP ##

OAuth是一种授权机制，数据的所有者告诉系统，同一授权第三方应用进入系统，获取这些数据。系统从而产生一个短期的进入令牌token，用来代替密码，供第三方使用。

# 二、API #

[https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/][https_developer.github.com_apps_building-oauth-apps_authorizing-oauth-apps]

# 三、OkHTTP实现GitHub第三方登录 #

![format_png][]

# 四、Maven  #

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
     
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
     
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
     
        
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>4.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>mockwebserver</artifactId>
            <version>4.3.1</version>
        </dependency>
        
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.58</version>
        </dependency>
    </dependencies>

#  五、代码实例 #

![format_png 1][]

## 1、application.properties ##

server.port=8080
     
    github.client.id=27dda83xxxxxx36043d4
    github.client.secret=01f948axxxxxxef10d9132cfe6083dxxxxxx5f3503
    github.redirect.uri=http://localhost:8080/callback

## 2、GitHubProvider.java ##

package life.majiang.community.provider;
     
    import life.majiang.community.dto.AccessTokenDTO;
    import life.majiang.community.dto.GitHubUser;
    import com.alibaba.fastjson.JSON;
    import okhttp3.*;
    import org.springframework.stereotype.Component;
     
    import java.io.IOException;
     
    @Component
    public class GitHubProvider {
        private static final MediaType MediaType_JSON
                = MediaType.get("application/json; charset=utf-8");
        public String getAccessToken(AccessTokenDTO accessTokenDTO){
     
            OkHttpClient client = new OkHttpClient();
            RequestBody body = RequestBody.create(JSON.toJSONString(accessTokenDTO), MediaType_JSON);
            Request request = new Request.Builder()
                    .url("https://github.com/login/oauth/access_token")
                    .post(body)
                    .build();
            try (Response response = client.newCall(request).execute()) {
                String resstring = response.body().string();
                String token =resstring.split("&")[0]
                        .split("=")[1];
                return token;
            }catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }
        public GitHubUser getUser(String AccessToken){
            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder()
                    .url("https://api.github.com/user?access_token="+AccessToken)
                    .build();
            try{
                Response response = client.newCall(request).execute();
                String res = response.body().string();
                GitHubUser gitHubUser = JSON.parseObject(res, GitHubUser.class);
                return gitHubUser;
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }
    }

## 3、AuthorizeController.java  ##

package life.majiang.community.controller;
     
     
    import life.majiang.community.dto.AccessTokenDTO;
    import life.majiang.community.dto.GitHubUser;
    import life.majiang.community.provider.GitHubProvider;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
     
    import javax.servlet.http.HttpServletRequest;
     
    /**
     *
     */
    @Controller
    public class AuthorizeController {
     
        @Autowired
        private GitHubProvider gitHubProvider;
        @Value("${github.client.id}")
        private String clientId;
        @Value("${github.client.secret}")
        private String clientSecret;
        @Value("${github.redirect.uri}")
        private String redirectURI;
     
        @GetMapping("/callback")
        public String callBack(@RequestParam(name = "code")String code,
                               @RequestParam(name = "state") String state,
                               HttpServletRequest request){
            AccessTokenDTO accessTokenDTO = new AccessTokenDTO();
            accessTokenDTO.setClient_id(clientId);
            accessTokenDTO.setClient_secret(clientSecret);
            accessTokenDTO.setCode(code);
            accessTokenDTO.setRedirect_uri(redirectURI);
            accessTokenDTO.setState(state);
            String accessToken = gitHubProvider.getAccessToken(accessTokenDTO);
            GitHubUser user = gitHubProvider.getUser(accessToken);
            if(user != null){
                //登录成功
                request.getSession().setAttribute("user",user);
                return "redirect:index";
            }else {
                //登录失败
                return "redirect:index";
            }
            //return "index"+user.toString();
        }
     
    }

## 4、HTTP Request  ##

https://github.com/login/oauth/authorize?client_id=27dda83ebxxxxxxx43d4&redirect_uri=http://localhost:8080/callback&scope=user&state=1

# 六、运行结果 #

![format_png 2][]

[https_developer.github.com_apps_building-oauth-apps_authorizing-oauth-apps]: https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/
[format_png]: /images/20210813/bc7c5121ce29456d8c2392c1010a44f6.png
[format_png 1]: /images/20210813/ee1af22d2ccd4252932d87b43ba6ef11.png
[format_png 2]: /images/20210813/d16f5624a46d4b9f852af82a0f58e25b.png