Question

我正在使用Lucene开发移动应用程序。当我使用BooleanQuery时，它可以工作。但是当我使用WildcardQuery或FuzzyQuery时，我在运行时获得了java.lang.NoClassDefFoundError。我知道android studio默认支持maven。我检查了外部库和添加的所有罐子。我的build.gradle文件具有以下依赖项：

compile group: 'org.apache.lucene', name: 'lucene-core', version: '7.0.1'
compile group: 'org.apache.lucene', name: 'lucene-analyzers-common', version: '7.0.1'
compile group: 'org.apache.lucene', name: 'lucene-codecs', version: '7.0.1'
compile group: 'org.apache.lucene', name: 'lucene-queryparser', version: '7.0.1'
compile group: 'org.apache.lucene', name: 'lucene-queries', version: '7.0.1'
compile group: 'org.apache.lucene', name: 'lucene-sandbox', version: '7.0.1'

NoClassDefFound错误：

Process: com.example.eren.lucene, PID: 7215
   java.lang.NoClassDefFoundError: Failed resolution of: Ljava/lang/ClassValue;
       at org.apache.lucene.search.MultiTermQuery.getTermsEnum(MultiTermQuery.java:300)
       at org.apache.lucene.search.MultiTermQueryConstantScoreWrapper$1.rewrite(MultiTermQueryConstantScoreWrapper.java:141)
       at org.apache.lucene.search.MultiTermQueryConstantScoreWrapper$1.bulkScorer(MultiTermQueryConstantScoreWrapper.java:193)
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:655)
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:462)
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:581)
       at org.apache.lucene.search.IndexSearcher.searchAfter(IndexSearcher.java:439)
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:450)
       at com.example.eren.lucene.MainActivity.searchIngredient(MainActivity.java:262)
       at com.example.eren.lucene.MainActivity.searchProcess(MainActivity.java:216)
       at com.example.eren.lucene.MainActivity.onCreate(MainActivity.java:48)
       at android.app.Activity.performCreate(Activity.java:6975)
       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
       at android.app.ActivityThread.-wrap11(Unknown Source:0)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
       at android.os.Handler.dispatchMessage(Handler.java:105)
       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.ClassNotFoundException: Didn't find class "java.lang.ClassValue" on path: DexPathList[[zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/base.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.eren.lucene-zYmMwtI9UFJUuvVsCJY1Gw==/lib/x86, /system/lib, /vendor/lib]]
       at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
       at org.apache.lucene.search.MultiTermQuery.getTermsEnum(MultiTermQuery.java:300) 
       at org.apache.lucene.search.MultiTermQueryConstantScoreWrapper$1.rewrite(MultiTermQueryConstantScoreWrapper.java:141) 
       at org.apache.lucene.search.MultiTermQueryConstantScoreWrapper$1.bulkScorer(MultiTermQueryConstantScoreWrapper.java:193) 
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:655) 
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:462) 
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:581) 
       at org.apache.lucene.search.IndexSearcher.searchAfter(IndexSearcher.java:439) 
       at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:450) 
       at com.example.eren.lucene.MainActivity.searchIngredient(MainActivity.java:262) 
       at com.example.eren.lucene.MainActivity.searchProcess(MainActivity.java:216) 
       at com.example.eren.lucene.MainActivity.onCreate(MainActivity.java:48) 
       at android.app.Activity.performCreate(Activity.java:6975) 
       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213) 
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770) 
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) 
       at android.app.ActivityThread.-wrap11(Unknown Source:0) 
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) 
       at android.os.Handler.dispatchMessage(Handler.java:105) 
       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)

有什么想法解决这个问题吗？

Answer 1

Android不完全支持java8功能（请参见https://developer.android.com/studio/write/java8-support）。 Lucene在Java 6上的最新版本是4.7。从理论上讲，Lucene 4.7与android的兼容性很好。

Lucene Android NoClassDefFoundError

1 个答案: