我已经测试了我在多个设备上执行的过程，但是，当我开始在Android上使用它时，它始终会失败。
我一直在使用WAMP在多个设备之间进行通信。似乎没有官方支持Android上的Autobahn支持WAMP jawampa应该这样做。
我使用Android Studios将此模块包含在Android项目中。 我对Android开发很陌生，所以我尝试从我有更多经验的地方解决问题。我认为在Android上使用它时可能会出现问题。
以下是我对该项目的设置。
app gradle：
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.1"
defaultConfig {
applicationId "com.example.user.androidapp"
minSdkVersion 15
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
jackOptions {
enabled true
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
packagingOptions {
exclude 'META-INF/DEPENDENCIES.txt'
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/dependencies.txt'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/license.txt'
exclude 'META-INF/LICENSE'
exclude 'META-INF/license.txt'
exclude 'META-INF/LGPL2.1'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/notice'
exclude 'META-INF/NOTICE'
exclude 'META-INF/notice.txt'
exclude 'META-INF/ASL2.0'
exclude 'META-INF/io.netty.versions.properties'
exclude 'META-INF/INDEX.LIST'
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.1.1'
compile 'com.android.support:design:25.1.1'
testCompile 'junit:junit:4.12'
compile 'ws.wamp.jawampa:jawampa-core:0.4.2'
compile 'ws.wamp.jawampa:jawampa-netty:0.4.2'
}
我设置了权限<uses-permission android:name="android.permission.INTERNET" />
WAMP代码：
package com.example.cdrandin.androidapp;
import android.util.Log;
import java.util.concurrent.TimeUnit;
import rx.functions.Action1;
import ws.wamp.jawampa.WampClient;
import ws.wamp.jawampa.WampClientBuilder;
import ws.wamp.jawampa.WampError;
import ws.wamp.jawampa.transport.netty.NettyWampClientConnectorProvider;
public class WampTasks {
private static WampTasks _ourInstance = new WampTasks();
private static String _host = "192.168.2.201";
private static String _port = "8080";
public static WampTasks getInstance() {
return _ourInstance;
}
public WampClient client = null;
private WampTasks() {
try {
// Create a builder and configure the client
WampClientBuilder builder = new WampClientBuilder();
NettyWampClientConnectorProvider connectorProvider = new NettyWampClientConnectorProvider();
builder.withConnectorProvider(connectorProvider)
.withUri(String.format("ws://%s:%s/ws", _host, _port))
.withRealm("realm1")
.withInfiniteReconnects()
.withReconnectInterval(5, TimeUnit.SECONDS);
// Create a client through the builder. This will not immediately start
// a connection attempt
client = builder.build();
} catch (WampError e) {
// Catch exceptions that will be thrown in case of invalid configuration
e.printStackTrace();
return;
} catch(Exception e) {
e.printStackTrace();
return;
}
}
public void Alert(String ip){
client.publish("com.app.test", "hello world");
}
}
崩溃报告：
02-10 13:46:16.824 2872-2878/com.example.user.androidapp W/art: Suspending all threads took: 45.899ms
02-10 13:46:16.830 2872-2872/com.example.user.androidapp W/System.err: ApplicationError(wamp.error.invalid_uri, [], {})
02-10 13:46:16.833 2872-2872/com.example.user.androidapp W/System.err: at ws.wamp.jawampa.transport.netty.NettyWampClientConnectorProvider.createConnector(NettyWampClientConnectorProvider.java:102)
02-10 13:46:16.833 2872-2872/com.example.user.androidapp W/System.err: at ws.wamp.jawampa.WampClientBuilder.build(WampClientBuilder.java:127)
02-10 13:46:16.833 2872-2872/com.example.user.androidapp W/System.err: at com.example.user.androidapp.WampTasks.<init>(WampTasks.java:40)
02-10 13:46:16.833 2872-2872/com.example.user.androidapp W/System.err: at com.example.user.androidapp.WampTasks.<clinit>(WampTasks.java:17)
02-10 13:46:16.833 2872-2872/com.example.user.androidapp W/System.err: at com.example.user.androidapp.SelectedDevice.onCreate(SelectedDevice.java:13)
02-10 13:46:16.834 2872-2872/com.example.user.androidapp W/System.err: at android.app.Activity.performCreate(Activity.java:5990)
02-10 13:46:16.834 2872-2872/com.example.user.androidapp W/System.err: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
02-10 13:46:16.834 2872-2872/com.example.user.androidapp W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
02-10 13:46:16.834 2872-2872/com.example.user.androidapp W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
02-10 13:46:16.845 2872-2872/com.example.user.androidapp W/System.err: at android.app.ActivityThread.access$800(ActivityThread.java:151)
02-10 13:46:16.845 2872-2872/com.example.user.androidapp W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
02-10 13:46:16.845 2872-2872/com.example.user.androidapp W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
02-10 13:46:16.845 2872-2872/com.example.user.androidapp W/System.err: at android.os.Looper.loop(Looper.java:135)
02-10 13:46:16.846 2872-2872/com.example.user.androidapp W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5254)
02-10 13:46:16.846 2872-2872/com.example.user.androidapp W/System.err: at java.lang.reflect.Method.invoke(Native Method)
02-10 13:46:16.847 2872-2872/com.example.user.androidapp W/System.err: at java.lang.reflect.Method.invoke(Method.java:372)
02-10 13:46:16.847 2872-2872/com.example.user.androidapp W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
02-10 13:46:16.847 2872-2872/com.example.user.androidapp W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
02-10 13:46:16.848 2872-2872/com.example.user.androidapp D/AndroidRuntime: Shutting down VM
02-10 13:46:16.849 2872-2872/com.example.user.androidapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.user.androidapp, PID: 2872
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.user.androidapp/com.example.user.androidapp.SelectedDevice}: java.lang.NullPointerException: Attempt to invoke virtual method 'rx.Observable ws.wamp.jawampa.WampClient.publish(java.lang.String, java.lang.Object[])' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'rx.Observable ws.wamp.jawampa.WampClient.publish(java.lang.String, java.lang.Object[])' on a null object reference
at com.example.user.androidapp.WampTasks.Alert(WampTasks.java:66)
at com.example.user.androidapp.SelectedDevice.onCreate(SelectedDevice.java:13)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
02-10 13:46:16.873 2872-2883/com.example.user.androidapp I/art: Background partial concurrent mark sweep GC freed 607(56KB) AllocSpace objects, 0(0B) LOS objects, 40% free, 2MB/3MB, paused 10.990ms total 146.347ms
02-10 13:46:19.630 2872-2872/com.example.user.androidapp I/Process: Sending signal. PID: 2872 SIG: 9
答案 0 :(得分：0)
You Uri是你的WampBuilder withUri（String.format（＆＃34; ws：//％s：％s / ws＆＃34;，_ host，_port））中的一个问题。检查它是否正常运行。 使用此网址http://192.168.2.201:8080启动浏览器。 Normarly你会看到像＃34这样的wamp消息;这个服务器在路径/ ws上提供了一个wamp路由器＆＃34;