我在项目中收到java.lang.NoClassDefFoundError：org.jxmpp.util.cache.LruCache异常

Question

我在下面一行得到NoClassDefFoundError例外，

XMPPconfig = XMPPTCPConnectionConfiguration.builder();

我在很多网站上搜索过，但没有得到解决方案。所以请帮我解决这个问题。下面我附上调试快照。

apply plugin: 'com.android.application'

android {

compileSdkVersion 23
buildToolsVersion "23.0.2"

defaultConfig {
    applicationId "com.xyz.myapp_alpha"     
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 21
    versionName "1.79.1004"

    // Enabling multidex support.
    multiDexEnabled true
}
dexOptions {

    preDexLibraries = false
    javaMaxHeapSize "4g"
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
    }
}}

知识库{

mavenCentral()
maven {
    url "http://dl.bintray.com/journeyapps/maven"
}}

依赖项{

compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.1'
compile 'com.android.support:design:23.2.1'
compile 'com.android.support:cardview-v7:23.1.1'
compile 'com.getbase:floatingactionbutton:1.10.1'
compile 'de.hdodenhof:circleimageview:2.0.0'
compile 'com.android.support:recyclerview-v7:23.1.1'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
compile project(':weekcalendar')
compile 'com.github.johnkil.print:print:1.2.2'
compile project(':MPChartLib')
compile 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
compile project(':library')
compile 'com.github.sundeepk:compact-calendar-view:1.7.8'
compile 'com.jakewharton:butterknife:7.0.0'
compile project(':agendacalendarview')
compile 'com.google.android.gms:play-services-location:8.4.0'
compile 'com.google.android.gms:play-services-gcm:8.4.0'
compile project(':xCLCharts')
compile 'com.journeyapps:zxing-android-embedded:2.0.1@aar'
compile 'com.journeyapps:zxing-android-legacy:2.0.1@aar'
compile 'com.journeyapps:zxing-android-integration:2.0.1@aar'
compile 'com.google.zxing:core:3.0.1'
compile 'org.jsoup:jsoup:1.7.3'
compile project(':qreader')
compile project(':cropper')
compile 'org.igniterealtime.smack:smack-android-extensions:4.1.9'
compile 'org.igniterealtime.smack:smack-android:4.1.9'
compile 'org.igniterealtime.smack:smack-tcp:4.1.9'
//    compile 'com.android.support:multidex:1.0.0'
//compile 'org.igniterealtime.smack:smack-resolver-javax:4.1.9'

//编译组：＆＃39; org.jxmpp＆＃39;，名称：＆＃39; jxmpp-util-cache＆＃39;，版本：＆＃39; 0.4.1＆＃39;}