如何在使用拦截器获取refreshtoken后调用相同的请求？

Question

我正在创建使用改装的Android应用程序。我用Spring作为Restapi。我使用了JWT的身份验证。我在这里使用了两个拦截器。使用到期JWT调用BASE_URL/Helloapi的场景如下

>

使用RequestInterceptor

服务器检查令牌和响应代码401/403

客户端检查响应代码并使用头中带有refreshtoken的ResponseInterceptor调用/刷新

服务器检查refreshtoken并使用新accesstoken进行响应

现在的问题是如何再次打电话/你好。每个请求我都要这个。我如何预测最后提出的请求。

代码如下：

调用/hello的代码的一部分

btnNext.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {


                Call<HelloResponse> call= RetrofitFactoryWithJwt.getRetrofitInstance(getApplicationContext()).helloUser();

                call.enqueue(new Callback<HelloResponse>() {
                    @Override
                    public void onResponse(Call<HelloResponse> call, Response<HelloResponse> response) {
                        Log.d(TAG,"after call in enque");
                        if(response.code()==200)
                        {
                            Log.d(TAG,response.body().getSuccess());
                        }
                        else
                        {
                            Log.d(TAG,"problem in response:"+response.code());

                        }
                    }

                    @Override
                    public void onFailure(Call<HelloResponse> call, Throwable t) {
                        Log.d(TAG,"onfailure"+t.getMessage());
                    }
                });

                Intent intent = new Intent( getApplicationContext(), MainActivity.class);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                startActivity(intent);
            }
        });

请求拦截器。JAVA

public class RequestInterceptor implements Interceptor {


   Context context;
  String TAG="heyrequest";

    public RequestInterceptor(Context context)
    {
        this.context=context;
    }
    @Override
    public Response intercept(Chain chain) throws IOException {

        Request originalRequest = chain.request();

        //if url is /refresh add refresh token in header instead of accesstoken
        if(originalRequest.url().encodedPath().equalsIgnoreCase("/refresh"))
        {

            SharedPreferences preferences = context.getSharedPreferences("tokens", MODE_PRIVATE);
            String refreshvalue=preferences.getString("refreshtoken","");


            // rewrite the request
            Request newRequest=originalRequest.newBuilder()
                    .addHeader("Authorization","Bearer "+refreshvalue)
                    .build();

            return chain.proceed(newRequest);
        }

      //for context we have use requestinterceptor context construction

        SharedPreferences preferences = context.getSharedPreferences("tokens", MODE_PRIVATE);
        String tokenvalue=preferences.getString("accesstoken","");

        // rewrite the request
        Request newRequest=originalRequest.newBuilder()
                            .addHeader("Authorization","Bearer "+tokenvalue)
                            .build();

        return chain.proceed(newRequest);
    }
}

应答器。JAVA

public class ResponseInterceptor implements Interceptor {

    Context context;
    String TAG="heyresponse";
    String accesstoken=null;
    Response response=null;
    public ResponseInterceptor(Context context)
    {
       this.context=context;
    }

    @Override
    public Response intercept(final Chain chain) throws IOException {

         final Request request=chain.request();
         response = chain.proceed(request);
        if(response.code()==401 || response.code()==403)
        {
           accesstoken=getNewToken();
        }
        return chain.proceed(request);
    }

    public String getNewToken()
    {

        Call<RefreshResponse> call= RetrofitFactoryWithJwt.getRetrofitInstance(context).refreshToken();

        call.enqueue(new Callback<RefreshResponse>() {
            @Override
            public void onResponse(Call<RefreshResponse> call, retrofit2.Response<RefreshResponse> response1) {
                Log.d(TAG,"in refreshtoken call");
                if(response1.code()==200)
                {

                    accesstoken=response1.body().getAccesstoken();
                    Log.d(TAG,accesstoken);

                    SharedPreferences preferences = context.getSharedPreferences("tokens", MODE_PRIVATE);
                    preferences.edit().putString("accesstoken", accesstoken).apply();

                }
                else
                {
                    Log.d(TAG,"problem in response:"+response1.code());
                }
            }

            @Override
            public void onFailure(Call<RefreshResponse> call, Throwable t) {
                Log.d(TAG,"onfailure:"+t.getMessage());
            }
        });

return  accesstoken;
    }

}

Answer 1

我通过使用authenticator处理响应和拦截器在请求中添加头来解决这个问题