android - 使用Gradle 1.11导入Spring Framework导致多个dex文件定义错误

Question

根据Spring Framework Android quickstart的说明，如果您使用Gradle构建项目，则应添加以下几行作为构建依赖项:

dependencies {
    compile 'org.springframework.android:spring-android-rest-template:1.+'
    compile 'org.springframework.android:spring-android-auth:1.+'
    compile 'org.springframework.android:spring-android-core:1.+'
}

但是，Gradle 1.11上会发生以下错误:

UNEXPECTED TOP-LEVEL EXCEPTION:
    com.android.dex.DexException: Multiple dex files define
            Lorg/springframework/core/ErrorCoded;
    at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594)
    at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552)
    at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533)
    at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170)
    at com.android.dx.merge.DexMerger.merge(DexMerger.java:188)
    at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439)
    at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287)
    at com.android.dx.command.dexer.Main.run(Main.java:230)
    at com.android.dx.command.dexer.Main.main(Main.java:199)
    at com.android.dx.command.Main.main(Main.java:103)

Answer 1

根据Spring.io上的this线程，“用于Android的Spring其余模板和核心 Artifact 不依赖于Spring核心或任何Spring Framework库。但是，auth依赖关系和Spring Social都一样。”

因此，一种可能的解决方案是将这些重复的依赖性标记为排除:

dependencies {
    compile('org.springframework.android:spring-android-auth:1.+') {
        exclude group :'org.springframework', module: 'commons-logging'
        exclude group :'org.springframework', module: 'spring-core'
        exclude group :'org.springframework', module: 'spring-web'
    }
    compile 'org.springframework.android:spring-android-core:1.+'
    compile 'org.springframework.android:spring-android-rest-template:1.+'
}