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我部署AWS API Gateway的有一个端点： /users使用DELETE方法。我正在尝试从我的android app使用中调用此方法generated SDK。我已经部署了 API，然后在 API Gateway 控制台中生成了 SDK，并下载了名为aws-apigateway-api-sdk-1.0.0. 然后我在文件夹中运行“mvn install”并将生成的 .jar 文件和库复制到我的项目中并添加了 gradle 导入（基本上我按照这些说明执行了所有操作，直到第 7 点）。

现在我想在我的 android 代码中创建 SDK。在说明中，他们这样做：

// Create an instance of your SDK. Here, 'SimpleCalcClient.java' is the compiled java class for the SDK generated by API Gateway.
final SimpleCalcClient client = factory.build(SimpleCalcClient.class);

我的问题是这个SimpleCalcClient.class-> 我知道我需要用我自己的值替换它，但是在我生成的目标文件夹中，我只找到了名为的类LambdaSimpleProxyClient.class，它是一个接口。不过，这似乎不是正确的课程：

生成的 LambdaSimpleProxyClient.class

我仍然尝试使用ApiClientFactory这个类，现在我的代码如下所示：

public void deleteUser(View view) {
        ApiClientFactory factory = new ApiClientFactory();
        final LambdaSimpleProxyClient client = factory.build(LambdaSimpleProxyClient.class);
        client.usersDelete();
}

LambdaSimpleProxyClass.java是在我运行的第 5 步中生成的，mvn install其中包含方法usersDelete()，这对我来说很有意义，因为这符合我调用 API 端点的方式并且看起来很有希望，但我不认为这是我应该使用的类这里（但.class我的 zip 文件夹中没有其他文件由以下文件生成API Gateway Generate SDK Method：

/**
     *
     *
     * @return Empty
     */
    @com.amazonaws.mobileconnectors.apigateway.annotation.Operation(path = "/users", method = "DELETE")
    Empty usersDelete();

我也不明白如何username在这里传递我的查询参数，但我仍然尝试调用这个方法。然后程序在 client.usersDelete() 处崩溃；

那么除了LambdaSimpleProxyClient.class我应该在那里使用什么？.class我生成的 zip 文件夹aws-apigateway-api-sdk-1.0.0或我的 maven 生成的目标文件夹中没有其他文件。

2020-12-21 20:59:32.427 5340-5340/de.stuttgart.syzl3000 D/ProfileActivity: deleteAccount: delete Btn clicked
2020-12-21 20:59:32.441 5340-5340/de.stuttgart.syzl3000 D/AndroidRuntime: Shutting down VM
2020-12-21 20:59:32.445 5340-5340/de.stuttgart.syzl3000 E/AndroidRuntime: FATAL EXCEPTION: main
    Process: de.stuttgart.syzl3000, PID: 5340
    java.lang.IllegalStateException: Could not execute method for android:onClick
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:414)
        at android.view.View.performClick(View.java:6256)
        at android.view.View$PerformClick.run(View.java:24701)
        at android.os.Handler.handleCallback(Handler.java:789)
        at android.os.Handler.dispatchMessage(Handler.java:98)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6541)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Method.invoke(Native Method)
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409)
        at android.view.View.performClick(View.java:6256) 
        at android.view.View$PerformClick.run(View.java:24701) 
        at android.os.Handler.handleCallback(Handler.java:789) 
        at android.os.Handler.dispatchMessage(Handler.java:98) 
        at android.os.Looper.loop(Looper.java:164) 
        at android.app.ActivityThread.main(ActivityThread.java:6541) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 
     Caused by: com.amazonaws.mobileconnectors.apigateway.ApiClientException:  (Service: null; Status Code: 0; Error Code: null; Request ID: null)
        at com.amazonaws.mobileconnectors.apigateway.ApiClientHandler.invoke(ApiClientHandler.java:118)
        at java.lang.reflect.Proxy.invoke(Proxy.java:913)
        at $Proxy1.usersDelete(Unknown Source)
        at de.stuttgart.syzl3000.menu.ProfileActivity.deleteAccount(ProfileActivity.java:49)
        at java.lang.reflect.Method.invoke(Native Method) 
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409) 
        at android.view.View.performClick(View.java:6256) 
        at android.view.View$PerformClick.run(View.java:24701) 
        at android.os.Handler.handleCallback(Handler.java:789) 
        at android.os.Handler.dispatchMessage(Handler.java:98) 
        at android.os.Looper.loop(Looper.java:164) 
        at android.app.ActivityThread.main(ActivityThread.java:6541) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 
     Caused by: android.os.NetworkOnMainThreadException
        at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1448)
        at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:102)
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:90)
        at java.net.InetAddress.getAllByName(InetAddress.java:787)
        at com.android.okhttp.Dns$1.lookup(Dns.java:39)
        at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
        at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
        at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
        at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
        at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
        at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
        at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
        at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:407)
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseMessage(HttpURLConnectionImpl.java:534)
        at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseMessage(DelegatingHttpsURLConnection.java:109)
        at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseMessage(Unknown Source:0)
        at com.amazonaws.http.UrlHttpClient.createHttpResponse(UrlHttpClient.java:92)
        at com.amazonaws.http.UrlHttpClient.execute(UrlHttpClient.java:85)
        at com.amazonaws.mobileconnectors.apigateway.ApiClientHandler.invoke(ApiClientHandler.java:109)
        at java.lang.reflect.Proxy.invoke(Proxy.java:913) 
        at $Proxy1.usersDelete(Unknown Source) 
        at de.stuttgart.syzl3000.menu.ProfileActivity.deleteAccount(ProfileActivity.java:49) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409) 
        at android.view.View.performClick(View.java:6256) 
        at android.view.View$PerformClick.run(View.java:24701) 
        at android.os.Handler.handleCallback(Handler.java:789) 
        at android.os.Handler.dispatchMessage(Handler.java:98) 
        at android.os.Looper.loop(Looper.java:164) 
        at android.app.ActivityThread.main(ActivityThread.java:6541) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

欢迎任何提示

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1 回答 1

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我不得不再次在我的 API Gateway 控制台中运行“生成 SDK”，因为不知何故我添加的查询参数不在部署的版本中。再次部署并生成新的 SDK 后，我将解压缩的文件夹移动aws-apigateway-api-sdk-1.0.0到我的app文件夹中。然后LambdaSimpleProxyClient.class在调用中自动识别，factory.build(LambdaSimpleProxyClient.class)我能够将查询参数传递给client.deleteUser("<my-username-value>")现在接受传入字符串参数的方法。

仍然有一个错误，但我会为此提出一个新问题。

于 2020-12-21T21:27:24.770 回答