Apache http客户端Android库的Android问题

Question

这是我正在使用的库：https://github.com/clickntap/vimeo

我正在尝试使用图书馆的一个Android应用程序。我的测试设备是Kitkat(4.4.4)。

compileSdkVersion 25
buildToolsVersion "25.0.3"
useLibrary  'org.apache.http.legacy'

defaultConfig {
    applicationId "my.app.package"
    minSdkVersion 16
    targetSdkVersion 25
    versionCode 1
    versionName "1.0.0-alpha"
}

下面是我添加库的方法：

compile 'com.clickntap:vimeo:1.10'

但在vimeo.addVideo()上收到以下错误：

java.lang.NoClassDefFoundError: org.apache.http.impl.client.HttpClientBuilder

和警告：

WARNING: Dependency org.apache.httpcomponents:httpclient:4.3.6 is ignored for debug as it may be conflicting with the internal version provided by Android.
WARNING: Dependency org.json:json:20140107 is ignored for debug as it may be conflicting with the internal version provided by Android.

compile 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
compile('com.clickntap:vimeo:1.10') {
    exclude group: 'org.apache.httpcomponents'
    exclude group: 'org.json'
}

java.lang.NoSuchMethodError: org.apache.http.entity.FileEntity.<init>

Caused by: java.lang.NoClassDefFoundError: org.apache.http.impl.client.HttpClientBuilder
                at com.clickntap.vimeo.Vimeo.apiRequest(Vimeo.java:218)
                at com.clickntap.vimeo.Vimeo.beginUploadVideo(Vimeo.java:122)
                at com.clickntap.vimeo.Vimeo.addVideo(Vimeo.java:138)
                at my.app.package.VimeoActivity$6.subscribe(VimeoActivity.java:163) // my activity
                at io.reactivex.internal.operators.single.SingleCreate.subscribeActual(SingleCreate.java:39)
                at io.reactivex.Single.subscribe(Single.java:2702)
                at io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
                at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:451)
                at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:61)
                at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:52) 
                at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152) 
                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265) 
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
                at java.lang.Thread.run(Thread.java:841) 

下面是第二个场景，其中包含HttpClient-Android:

Caused by: java.lang.NoSuchMethodError: org.apache.http.entity.FileEntity.<init>
                at com.clickntap.vimeo.Vimeo.apiRequest(Vimeo.java:247)
                at com.clickntap.vimeo.Vimeo.uploadVideo(Vimeo.java:126)
                at com.clickntap.vimeo.Vimeo.addVideo(Vimeo.java:140)
                at my.app.package.VimeoActivity$6.subscribe(VimeoActivity.java:163) // my activity
                at io.reactivex.internal.operators.single.SingleCreate.subscribeActual(SingleCreate.java:39)
                at io.reactivex.Single.subscribe(Single.java:2702)
                at io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
                at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:451)
                at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:61)
                at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:52) 
                at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152) 
                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265) 
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
                at java.lang.Thread.run(Thread.java:841) 

Answer 1

Android版本<6嵌入了Apache HTTP Client 4.0.beta快照的分叉（https://hc.Apache.org/httpcomponents-client-4.3.x/android-port.html）。

第一个场景失败，因为httpclientbuilder是在httpclient:4.3上引入的。

第二种情况失败，因为您同时使用了加载旧版httpclient库的useLibrary'org.apache.http.legacy'和compile'org.apache.httpComponents:httpClient-android:4.3.5.1'。Vimeo客户端使用了遗留库中不存在的FileEntity构造函数，该构造函数存在于类路径中，并且优先于httpclient-android版本的FileEntity类。

我建议像在第二个场景中那样使用依赖项，但删除useLibrary'org.apache.http.legace'。

如果您使用的是4.3.5.1之前或之后引入的API，并且假设httpclient-android库的公共API与相同版本的HttpComponents:HttpClient库相同，则该解决方案将适用于对HttpComponents:HttpClient的任何依赖关系。

更新

在上面的示例中，Vimeo库直接使用FileEntity构造函数，该构造函数将库与特定类耦合，而如果使用EntityBuilder，则可以将其解耦。所以我能看到的唯一方法，就是修改库源代码，使其与httpclient-android库和Android兼容。