GSON：由于ExclusionStrategy错误，无法编译项目

Question

我接手了一个项目，它不编译。当我构建它时，我得到了以下错误：

已存在的程序类型：com.google.gson.exclusionStrategy

下面是该项目的构建。gradle应用插件:'com.android.application'

def app_version = 'v0.0.1'
def version = '0.0.1

android {
    compileSdkVersion project.ext.globalCompileSdkVersion
    buildToolsVersion project.ext.globalBuildToolsVersion

    defaultConfig {
        applicationId "com.sample.companyname"

        minSdkVersion project.ext.globalMinSdkVersion
        targetSdkVersion project.ext.globalTargetSdkVersion

        versionCode 74
        versionName app_version

        multiDexEnabled true
    }

    compileOptions {
        //noinspection GroovyAssignabilityCheck
        sourceCompatibility JavaVersion.VERSION_1_7
        //noinspection GroovyAssignabilityCheck
        targetCompatibility JavaVersion.VERSION_1_7
    }

    // This has been added to deal with a duplicate file when using
    // apache commons-codec and commons-validators
    packagingOptions {
        pickFirst 'META-INF/DEPENDENCIES.txt'
        pickFirst 'META-INF/DEPENDENCIES'
        pickFirst 'META-INF/dependencies.txt'
        pickFirst 'META-INF/LICENSE.txt'
        pickFirst 'META-INF/LICENSE'
        pickFirst 'META-INF/license.txt'
        pickFirst 'META-INF/LGPL2.1'
        pickFirst 'META-INF/NOTICE.txt'
        pickFirst 'META-INF/NOTICE'
        pickFirst 'META-INF/notice.txt'
    }

    signingConfigs {
        debug {
            //noinspection GroovyAssignabilityCheck
            storeFile file('../keystore/product.keystore')
            storePassword "dont"
            keyAlias "even"
            keyPassword "try"
        }
        release {
            //noinspection GroovyAssignabilityCheck
            storeFile file('../keystore/product.keystore')
            storePassword "dont"
            keyAlias "even"
            keyPassword "try"
        }
    }

    //noinspection GroovyAssignabilityCheck
    buildTypes {
        debug {
            applicationIdSuffix ".debug"
            debuggable true
        }
        release {
            debuggable false
            minifyEnabled true
            shrinkResources false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.release
        }
    }

    flavorDimensions 'tier'

    productFlavors {
        sampleFlavor1 {
            dimension 'tier'
        }
        sampleFlavor2 {
            dimension 'tier'
        }
        sampleFlavor3 {
            dimension 'tier'
        }
        sampleFlavor4 {
            dimension 'tier'
        }
    }

    sourceSets {
        main.java.srcDirs = ['src/main/java']
    }

    lintOptions {
        abortOnError false
    }
}

//noinspection GroovyAssignabilityCheck
dependencies {
    // Project dependencies
    implementation project(':module-1')
    implementation project(':module-2')
    implementation project(':module-3')
    implementation project(':module-4')
    implementation project(':module-5')

    implementation(name: 'lib-a-2.1.1-release', ext: 'aar')
    implementation(name: 'lib-b-2.1.1-release', ext: 'aar')
    implementation(name: 'lib-c-2.1.1-release', ext: 'aar')
    implementation(name: 'lib-d-2.1.1-release', ext: 'aar')

    implementation 'com.google.code.gson:gson:2.8.0'

    implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.3'
    implementation('commons-codec:commons-codec:1.10')
    implementation('commons-validator:commons-validator:1.4.0') {
        exclude group: 'commons-logging', module: 'commons-logging'
        exclude group: 'commons-digester', module: 'commons-digester'
        exclude group: 'commons-beanutils', module: 'commons-beanutils'
        exclude group: 'commons-collections', module: 'commons-collections'
    }

    implementation "com.google.android.gms:play-services-nearby:$play_services_version"
    implementation "com.google.android.gms:play-services-gcm:$play_services_version"

    implementation 'com.android.support:multidex:1.0.3'
    implementation "com.android.support:appcompat-v7:$support_version"
    implementation "com.android.support:design:$support_version"
    implementation "com.android.support:support-annotations:$support_version"
    implementation "com.android.support.constraint:constraint-layout:1.0.2"

    // Test dependencies
    androidTestImplementation 'com.squareup.okhttp:mockwebserver:2.3.0'
    androidTestImplementation 'com.jayway.android.robotium:robotium-solo:5.2.1'

    testImplementation 'junit:junit:4.12'
}

Answer 1

检查您的lib文件夹中是否有任何gson jar。我也遇到了同样的问题，gson-2.2.4.jar在我的lib目录中。移除它对我有效。