使用SpringBoot+OkHttp+fastjson實現Github的OAuth第三方登入
阿新 • • 發佈:2020-02-03
一、在GitHub上建立一個OAuth
二、OAuth的原理
Spring官方文件
三、OkHttp的使用
OkHttp官方網站
1.Post
程式碼示例
//官方文件: public static final MediaType JSON // = MediaType.get("application/json; charset=utf-8"); MediaType mediaType = MediaType.get("application/json; charset=utf-8");//去掉字首,並且修改MediaType物件名,因為一會使用fastjson變數會重名 OkHttpClient client = new OkHttpClient();//第二句照抄 RequestBody body = RequestBody.create(json,mediaType);//直接複製方法體中的內容 Request request = new Request.Builder() .url("")//填寫要傳送請求的地址 .post(body) .build(); try (Response response = client.newCall(request).execute()) { return response.body().string();//返回的字串(json) }
2.Get
程式碼示例
OkHttpClient client = new OkHttpClient();//同上 Request request = new Request.Builder()//直接複製方法體中的內容 .url(url)//同上 .build(); try (Response response = client.newCall(request).execute()) { return response.body().string();//同上 }
四、fastJson的使用
JSON.toJSONString(實體類)//將實體類轉換為JSON字串 JSON.parseObject(string,實體類.class);//將JSON字串轉換為實體類
五、程式碼示例
前端程式碼
<a href="https://github.com/login/oauth/authorize?client_id=xxx&redirect_uri=http://127.0.0.1:8080/xxx&scope=user&state=1" rel="external nofollow" >Login</a> //scope和state不寫可能會報錯
@Controller public class AuthorizeController { @Autowired GithubProvider githubProvider; @GetMapping("/callback") public String callback(@RequestParam(name ="code") String code,@RequestParam(name ="state") String state){ AccessTokenDTO accessTokenDTO = new AccessTokenDTO(); accessTokenDTO.setClient_id(""); accessTokenDTO.setClient\_secret(""); accessTokenDTO.setCode(code); accessTokenDTO.setState(state); accessTokenDTO.setRedirect\_uri("https://github.com/login/oauth/access_token"); String token = githubProvider.getAccessToken(accessTokenDTO); GithubUser githubUser = githubProvider.getUser(token); return "index"; } }
@Component public class GithubProvider { public String getAccessToken(AccessTokenDTO accessTokenDTO){ MediaType mediaType = MediaType.get("application/json; charset=utf-8"); OkHttpClient client = new OkHttpClient(); RequestBody body = RequestBody.create(JSON.toJSONString(accessTokenDTO),mediaType);//用fastjson將實體類轉換為json字串傳入 Request request = new Request.Builder() .url("https://github.com/login/oauth/access_token?cilen_id=xxx&client_secret=xxx"+accessTokenDTO.getCode()+ "&redirect_uri=http://127.0.0.1:8080/callback&state=1") .post(body) .build(); try (Response response = client.newCall(request).execute()) { String string = response.body().string(); String token = string.split("&")\[0\].split("=")\[1\]; return token; } catch (IOException e) { e.printStackTrace(); } return null; } public GithubUser getUser(String token){ OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url("https://api.github.com/user?access_token="+token) .build(); try (Response response = client.newCall(request).execute()) { String string = response.body().string(); GithubUser githubUser = JSON.parseObject(string,GithubUser.class);//用fastjson將json字串轉換為實體類 return githubUser; } catch (IOException e) { e.printStackTrace(); } return null; } }
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