我的应用程序出现问题，我想在其中创建一个连接到我的服务器的简单 XMPP 客户端。 我在启动应用程序时遇到以下问题(编译运行没有问题)，但我的应用程序立即关闭。
java.lang.NoClassDefFoundError: Failed resolution of: Lorg/jxmpp/util/XmppStringUtils;
at org.jivesoftware.smack.provider.ProviderManager.getKey(ProviderManager.java:314)
at org.jivesoftware.smack.provider.ProviderManager.addStreamFeatureProvider(ProviderManager.java:304)
at org.jivesoftware.smack.provider.ProviderManager.addLoader(ProviderManager.java:140)
at org.jivesoftware.smack.initializer.UrlInitializer.initialize(UrlInitializer.java:54)
at org.jivesoftware.smack.SmackInitialization.loadSmackClass(SmackInitialization.java:232)
at org.jivesoftware.smack.SmackInitialization.parseClassesToLoad(SmackInitialization.java:193)
at org.jivesoftware.smack.SmackInitialization.processConfigFile(SmackInitialization.java:163)
at org.jivesoftware.smack.SmackInitialization.processConfigFile(SmackInitialization.java:148)
at org.jivesoftware.smack.SmackInitialization.<clinit>(SmackInitialization.java:116)
at org.jivesoftware.smack.SmackConfiguration.getVersion(SmackConfiguration.java:96)
at org.jivesoftware.smack.ConnectionConfiguration.<clinit>(ConnectionConfiguration.java:38)
at org.reisacher.zapp.Main.login(Main.java:30)
at org.reisacher.zapp.Main.onCreate(Main.java:73)
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:2390)
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:5257)
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.ClassNotFoundException: Didn't find class "org.jxmpp.util.XmppStringUtils" on path: DexPathList[[zip file "/data/app/org.reisacher.zapp-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469
at org.jivesoftware.smack.provider.ProviderManager.getKey(ProviderManager.java:314)
at org.jivesoftware.smack.provider.ProviderManager.addStreamFeatureProvider(ProviderManager.java:304)
at org.jivesoftware.smack.provider.ProviderManager.addLoader(ProviderManager.java:140)
at org.jivesoftware.smack.initializer.UrlInitializer.initialize(UrlInitializer.java:54)
at org.jivesoftware.smack.SmackInitialization.loadSmackClass(SmackInitialization.java:232)
at org.jivesoftware.smack.SmackInitialization.parseClassesToLoad(SmackInitialization.java:193)
at org.jivesoftware.smack.SmackInitialization.processConfigFile(SmackInitialization.java:163)
at org.jivesoftware.smack.SmackInitialization.processConfigFile(SmackInitialization.java:148)
at org.jivesoftware.smack.SmackInitialization.<clinit>(SmackInitialization.java:116)
at org.jivesoftware.smack.SmackConfiguration.getVersion(SmackConfiguration.java:96)
at org.jivesoftware.smack.ConnectionConfiguration.<clinit>(ConnectionConfiguration.java:38)
at org.reisacher.zapp.Main.login(Main.java:30)
at org.reisacher.zapp.Main.onCreate(Main.java:73)
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:2390)
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:5257)
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)
Suppressed: java.lang.ClassNotFoundException: org.jxmpp.util.XmppStringUtils
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 27 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
但我不知何故找不到与丢失的“XmppStringUtils”相关的任何内容
这是第30行的代码
public void login() throws XMPPException, IOException, SmackException {
XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder()
.setServiceName("reisacher.de")
.setHost("192.168.178.6")
.setPort(5222)
.build();
AbstractXMPPConnection connection = new XMPPTCPConnection(config);
connection.connect();
connection.login(username, password);
}
这些是我的进口
import org.jivesoftware.smack.AbstractXMPPConnection;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
加上我的build.gradle
// Top-level build file where you can add configuration options common to all sub-projects/modules.
apply plugin: 'jetty'
buildscript {
repositories {
maven {
url 'https://oss.sonatype.org/content/repositories/snapshots'
}
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
}
}
dependencies {
compile "org.igniterealtime.smack:smack-android:4.1.1"
compile "org.igniterealtime.smack:smack-tcp:4.1.1"
// optional features
compile "org.igniterealtime.smack:smack-android-extensions:4.1.1"
compile "org.igniterealtime.smack:smack-core:4.1.1"
}
allprojects {
repositories {
jcenter()
}
}
谢谢
最佳答案
您需要四个额外的 jar 文件。
1) jxmpp-core.jar
2) jxmpp-jid.jar
3) jxmpp-stringprep-libidn
4) jxmpp-util-cache
您可以从下面的链接下载所有这些。
https://oss.sonatype.org/content/repositories/releases/org/jxmpp/
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