Retrofit2:找不到HTTP 404

时间:2017-09-07 16:01:10

标签: android rx-java retrofit2

我在http://192.168.1.12:8080/api/hooray的服务器上提供了这项简单的服务:

router.route('/hooray/')
    .get(function (req, res) {
        res.status(200).send({ result: true, message: "hooray" })
    })

它确实可以使用Postman,但是从我的Android应用程序中我无法访问该URL,我不知道为什么。

这是(简化)代码:

服务界面

public interface HoorayAPI {
    @GET("hooray/")
    Observable<HoorayResponse> hooray();
}

我的自定义响应类:HoorayResponse

public class HoorayResponse{
    @SerializedName("result")
    @Expose
    private boolean result;

    @SerializedName("message")
    @Expose
    private String message;

    public HoorayResponse(boolean result, String message) {
        this.result = result;
        this.message = message;
    }

    // Getter and setter ...
}

呼叫者

public void foo(){
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("http://192.168.1.12:8080/api/")
            .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
            .addConverterFactory(GsonConverterFactory.create())
            .build();

    HoorayAPI service = retrofit.create(HoorayAPI.class);

    Observable<HoorayResponse> hoorayObservable = service.hooray();

    hoorayObservable
            .subscribeOn(Schedulers.newThread())
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(new Subscriber<HoorayResponse>() {
                @Override
                public void onCompleted() {}

                @Override
                public void onError(Throwable e) { e.printStackTrace(); }

                @Override
                public void onNext(HoorayResponse response) {
                    System.out.println("Hooray!!!");
                }
            });
}

当我调用foo()方法时,我收到此错误:

retrofit2.adapter.rxjava.HttpException: HTTP 404 Not Found 
    at retrofit2.adapter.rxjava.OperatorMapResponseToBodyOrError$1.onNext(OperatorMapResponseToBodyOrError.java:43)
    at retrofit2.adapter.rxjava.OperatorMapResponseToBodyOrError$1.onNext(OperatorMapResponseToBodyOrError.java:38)
    at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$RequestArbiter.request(RxJavaCallAdapterFactory.java:173)
    at rx.internal.operators.OperatorSubscribeOn$1$1$1.request(OperatorSubscribeOn.java:80)
    at rx.Subscriber.setProducer(Subscriber.java:211)
    at rx.internal.operators.OperatorSubscribeOn$1$1.setProducer(OperatorSubscribeOn.java:76)
    at rx.Subscriber.setProducer(Subscriber.java:205)
    at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:152)
    at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:138)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:50)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:8460)
    at rx.internal.operators.OperatorSubscribeOn$1.call(OperatorSubscribeOn.java:94)
    at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
    at java.lang.Thread.run(Thread.java:776)

我无法理解,因为错误: HTTP 404 Not Found 。该服务是可以访问的并且有效。我使用POST方法以与HoorayAPI非常类似的方式为 login 编写了一个服务API,它可以工作。为什么它在这里不起作用?我的意思是,代码似乎是正确的。

3 个答案:

答案 0 :(得分:2)

好的,我找到了答案。问题发生在.baseUrl(getResources().getString(R.string.url))。该URL作为

存储在资源文件 values / string.xml
<string name="url">http://192.168.1.12:8080/api/</string>

但是,在另一个资源文件 values- it /string.xml 中有以下内容:

<string name="url">https://myapp-api.mydomain.io/api</string>

由于智能手机的语言设置为意大利语,因此使用了资源文件 values-it / string.xml ,因此程序识别出 https://myapp-api.mydomain.io/api 作为网址而不是http://192.168.1.12:8080/api/

请注意正确更新资源文件中的所有网址以避免此问题。

答案 1 :(得分:0)

您确定手机是否连接到同一个局域网?

否则你可以尝试删除界面上的结束斜杠,但这不应该是问题

public interface HoorayAPI {
    @GET("hooray")
    Observable<HoorayResponse> hooray();
}

答案 2 :(得分:0)

您应该将subscribeOn(Schedulers.newThread())的类型更改为此.subscribeOn(Schedulers.single())这对我有帮助=)