テスト用のサーバに127.0.0.1:3000/
でアクセスしようとしましたがタイトルのエラーで接続に失敗します。
考えられる原因は何でしょうか?
エラーの内容は以下です
D/RETROFIT_TEST: onFailure java.net.ConnectException: Failed to connect to /127.0.0.1:3000 at okhttp3.internal.io.RealConnection.connectSocket(RealConnection.java:187) at okhttp3.internal.io.RealConnection.buildConnection(RealConnection.java:170) at okhttp3.internal.io.RealConnection.connect(RealConnection.java:111) at okhttp3.internal.http.StreamAllocation.findConnection(StreamAllocation.java:187) at okhttp3.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:123) at okhttp3.internal.http.StreamAllocation.newStream(StreamAllocation.java:93) at okhttp3.internal.http.HttpEngine.connect(HttpEngine.java:296) at okhttp3.internal.http.HttpEngine.sendRequest(HttpEngine.java:248) at okhttp3.RealCall.getResponse(RealCall.java:243) at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:201) at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:212) at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190) at com.example.yaritakouhei.niftyinterntest.MainActivity$1.intercept(MainActivity.java:46) at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190) at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:163) at okhttp3.RealCall.access$100(RealCall.java:30) at okhttp3.RealCall$AsyncCall.execute(RealCall.java:127) at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) at java.lang.Thread.run(Thread.java:818)
コードは以下です。
java
1import retrofit2.Call; 2import retrofit2.http.GET; 3 4public interface ApiService { 5 @GET("/") 6 Call<RandomUserDemo> apiDemo();
java
1 @Override 2 protected void onCreate(Bundle savedInstanceState) { 3 super.onCreate(savedInstanceState); 4 setContentView(R.layout.activity_main); 5 6 //okhttpのclient作成 7 OkHttpClient.Builder httpClient = new OkHttpClient.Builder(); 8 httpClient.addInterceptor(new Interceptor() { 9 @Override 10 public Response intercept(Chain chain) throws IOException { 11 Request original = chain.request(); 12 13 //header設定 14 Request request = original.newBuilder() 15 .header("Accept", "application/json") 16 .method(original.method(), original.body()) 17 .build(); 18 19 Response response = chain.proceed(request); 20 21 return response; 22 } 23 }); 24 25 //ログ出力設定 26 HttpLoggingInterceptor logging = new HttpLoggingInterceptor(); 27 logging.setLevel(HttpLoggingInterceptor.Level.BASIC); 28 httpClient.addInterceptor(logging); 29 30 //クライアント生成 31 OkHttpClient client = httpClient.build(); 32 Retrofit retrofit = new Retrofit.Builder() 33 .baseUrl("http://127.0.0.1:3000/")//基本のurl設定 34 .addConverterFactory(GsonConverterFactory.create())//Gsonの使用 35 .client(client)//カスタマイズしたokhttpのクライアントの設定 36 .build(); 37 //Interfaceから実装を取得 38 ApiService API = retrofit.create(ApiService.class); 39 40 //実行 41 API.apiDemo().enqueue(new Callback<RandomUserDemo>() { 42 @Override 43 public void onResponse(Call<RandomUserDemo> call, retrofit2.Response<RandomUserDemo> response) { 44 Log.d("RETROFIT_TEST","レスポンス"); 45 if (response.isSuccessful()) { 46 //通信結果をオブジェクトで受け取る 47 RandomUserDemo demo = response.body(); 48 Log.d("RETROFIT_TEST", demo.info.seed); 49 } else { 50 //通信が成功したが、エラーcodeが返ってきた場合はこちら 51 Log.d("RETROFIT_TEST", "error_code" + response.code()); 52 } 53 } 54 55 @Override 56 public void onFailure(Call<RandomUserDemo> call, Throwable t) { 57 //通信が失敗した場合など 58 Log.d("RETROFIT_TEST", "onFailure", t); 59 } 60 }); 61 62 API.apiDemo().enqueue(new Callback<RandomUserDemo>() { 63 @Override 64 public void onResponse(Call<RandomUserDemo> call, retrofit2.Response<RandomUserDemo> response) { 65 RandomUserDemo demo = response.body(); 66 } 67 68 @Override 69 public void onFailure(Call<RandomUserDemo> call, Throwable t) { 70 } 71 }); 72 }
androidの開発は初めてで不十分な部分が多いと思いますがお願いします。
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