java.lang.NoSuchMethodError 从 Java 连接到 Firebase 时
java.lang.NoSuchMethodError when connecting to Firebase from Java
我正在尝试将我的 Java 网络项目连接到 Firebase，这样我就可以将我的数据存储在 Firestore 中。我正在使用 Java Admin SDK，遵循官方指南：FirebaseAdminSDK。遗憾的是，我在初始化 FirebaseAp 时遇到异常：
java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkState(ZLjava/lang/String;Ljava/lang/Object;)V
at com.google.firebase.FirebaseApp.checkNotDeleted(FirebaseApp.java:352)
at com.google.firebase.FirebaseApp.getOptions(FirebaseApp.java:267)
at com.google.firebase.FirebaseApp$TokenRefresher.<init>(FirebaseApp.java:434)
at com.google.firebase.FirebaseApp$TokenRefresher$Factory.create(FirebaseApp.java:535)
at com.google.firebase.FirebaseApp.<init>(FirebaseApp.java:113)
at com.google.firebase.FirebaseApp.initializeApp(FirebaseApp.java:201)
at com.google.firebase.FirebaseApp.initializeApp(FirebaseApp.java:188)
现在，我在这里和那里看到，这是 guava 项目的问题，建议使用不同版本的 guava 库。我尝试了从 18 开始的所有版本。
然后，我了解到这可能是由我的类路径中不同版本的不同库引用的多个番石榴库相互争斗引起的。所以，我检查了maven依赖树，看是否存在对guava的多个依赖。没有。
然后，我解压了 .WAR 文件，以查看使用我的应用程序将哪些确切的 jars 部署到 glassfish。那里只有一个番石榴罐（我的 pom.xml 文件指向的那个）。
老实说，我 运行 没主意了。请帮忙。您可以在下面看到 pom.xml 和生成的 maven 依赖关系树。
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.greenstudio</groupId>
<artifactId>trekking-project</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>trekking-project</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.google.firebase</groupId>
<artifactId>firebase-admin</artifactId>
<version>5.6.0</version>
<exclusions>
<exclusion>
<artifactId>guava</artifactId>
<groupId>com.google.guava</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>21.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.9</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.5.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa.modelgen.processor</artifactId>
<version>2.5.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.3.3</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.6</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
<dependency>
<groupId>primefaces.blacktie</groupId>
<artifactId>primefaces.blacktie</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>bootstrap</groupId>
<artifactId>bootstrap</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons.validator.routines.EmailValidatororg.apache.commons.validator.routines.EmailValidator</groupId>
<artifactId>org.apache.commons.validator.routines.EmailValidator</artifactId>
<version>1.0</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.8</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
依赖树
[INFO] Scanning for projects...
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom
Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom (11 kB at 18 kB/s)
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.jar
Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.jar (153 kB at 709 kB/s)
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building trekking-project 1.0
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for primefaces:primefaces:jar:5.3 is missing, no dependency information available
[WARNING] The POM for primefaces.blacktie:primefaces.blacktie:jar:1.0 is missing, no dependency information available
[WARNING] The POM for bootstrap:bootstrap:jar:1.0 is missing, no dependency information available
[WARNING] The POM for org.apache.commons.validator.routines.EmailValidatororg.apache.commons.validator.routines.EmailValidator:org.apache.commons.validator.routines.EmailValidator:jar:1.0 is missing, no dependency information available
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ trekking-project ---
Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-archiver/2.3/plexus-archiver-2.3.pom
Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-archiver/2.3/plexus-archiver-2.3.pom (3.4 kB at 38 kB/s)
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/shared/maven-dependency-analyzer/1.4/maven-dependency-analyzer-1.4.pom
Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/shared/maven-dependency-analyzer/1.4/maven-dependency-analyzer-1.4.pom (5.2 kB at 58 kB/s)
Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-archiver/2.3/plexus-archiver-2.3.jar
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/shared/maven-dependency-analyzer/1.4/maven-dependency-analyzer-1.4.jar
Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/shared/maven-dependency-analyzer/1.4/maven-dependency-analyzer-1.4.jar (27 kB at 105 kB/s)
Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-archiver/2.3/plexus-archiver-2.3.jar (186 kB at 704 kB/s)
[INFO] com.greenstudio:trekking-project:war:1.0
[INFO] +- com.google.firebase:firebase-admin:jar:5.6.0:compile
[INFO] | +- com.google.api-client:google-api-client:jar:1.22.0:compile
[INFO] | | +- com.google.oauth-client:google-oauth-client:jar:1.22.0:compile
[INFO] | | \- com.google.http-client:google-http-client-jackson2:jar:1.22.0:compile
[INFO] | | \- com.fasterxml.jackson.core:jackson-core:jar:2.1.3:compile
[INFO] | +- com.google.api-client:google-api-client-gson:jar:1.22.0:compile
[INFO] | | \- com.google.http-client:google-http-client-gson:jar:1.22.0:compile
[INFO] | | \- com.google.code.gson:gson:jar:2.1:compile
[INFO] | +- com.google.http-client:google-http-client:jar:1.22.0:compile
[INFO] | | \- com.google.code.findbugs:jsr305:jar:1.3.9:compile
[INFO] | +- com.google.api:api-common:jar:1.2.0:compile
[INFO] | +- com.google.auth:google-auth-library-oauth2-http:jar:0.8.0:compile
[INFO] | | \- com.google.auth:google-auth-library-credentials:jar:0.8.0:compile
[INFO] | +- com.google.cloud:google-cloud-storage:jar:1.7.0:compile
[INFO] | | +- com.google.cloud:google-cloud-core:jar:1.7.0:compile
[INFO] | | | +- com.google.api:gax:jar:1.8.1:compile
[INFO] | | | +- com.google.protobuf:protobuf-java-util:jar:3.3.1:compile
[INFO] | | | +- com.google.api.grpc:proto-google-common-protos:jar:0.1.20:compile
[INFO] | | | \- com.google.api.grpc:proto-google-iam-v1:jar:0.1.20:compile
[INFO] | | +- com.google.cloud:google-cloud-core-http:jar:1.7.0:compile
[INFO] | | | +- com.google.http-client:google-http-client-appengine:jar:1.22.0:compile
[INFO] | | | \- com.google.http-client:google-http-client-jackson:jar:1.22.0:compile
[INFO] | | | \- org.codehaus.jackson:jackson-core-asl:jar:1.9.11:compile
[INFO] | | \- com.google.apis:google-api-services-storage:jar:v1-rev108-1.22.0:compile
[INFO] | +- com.google.cloud:google-cloud-firestore:jar:0.25.0-beta:compile
[INFO] | | +- io.netty:netty-tcnative-boringssl-static:jar:2.0.3.Final:compile
[INFO] | | +- com.google.cloud:google-cloud-core-grpc:jar:1.7.0:compile
[INFO] | | | +- com.google.protobuf:protobuf-java:jar:3.3.1:compile
[INFO] | | | +- io.grpc:grpc-protobuf:jar:1.6.1:compile
[INFO] | | | | \- io.grpc:grpc-protobuf-lite:jar:1.6.1:compile
[INFO] | | | \- io.grpc:grpc-context:jar:1.6.1:compile
[INFO] | | +- com.google.api:gax-grpc:jar:0.25.1:compile
[INFO] | | | +- com.google.auto.value:auto-value:jar:1.2:compile
[INFO] | | | \- org.threeten:threetenbp:jar:1.3.3:compile
[INFO] | | +- com.google.api.grpc:proto-google-cloud-firestore-v1beta1:jar:0.1.20:compile
[INFO] | | +- io.grpc:grpc-netty:jar:1.6.1:compile
[INFO] | | | +- io.grpc:grpc-core:jar:1.6.1:compile (version selected from constraint [1.6.1,1.6.1])
[INFO] | | | | +- com.google.errorprone:error_prone_annotations:jar:2.0.19:compile
[INFO] | | | | +- com.google.instrumentation:instrumentation-api:jar:0.4.3:compile
[INFO] | | | | \- io.opencensus:opencensus-api:jar:0.5.1:compile
[INFO] | | | +- io.netty:netty-codec-http2:jar:4.1.14.Final:compile (version selected from constraint [4.1.14.Final,4.1.14.Final])
[INFO] | | | \- io.netty:netty-handler-proxy:jar:4.1.14.Final:compile
[INFO] | | | \- io.netty:netty-codec-socks:jar:4.1.14.Final:compile
[INFO] | | +- io.grpc:grpc-stub:jar:1.6.1:compile
[INFO] | | \- io.grpc:grpc-auth:jar:1.6.1:compile
[INFO] | +- org.json:json:jar:20160810:compile
[INFO] | +- org.slf4j:slf4j-api:jar:1.7.25:compile
[INFO] | +- io.netty:netty-codec-http:jar:4.1.14.Final:compile
[INFO] | | \- io.netty:netty-codec:jar:4.1.14.Final:compile
[INFO] | +- io.netty:netty-handler:jar:4.1.14.Final:compile
[INFO] | | \- io.netty:netty-buffer:jar:4.1.14.Final:compile
[INFO] | | \- io.netty:netty-common:jar:4.1.14.Final:compile
[INFO] | \- io.netty:netty-transport:jar:4.1.14.Final:compile
[INFO] | \- io.netty:netty-resolver:jar:4.1.14.Final:compile
[INFO] +- com.google.guava:guava:jar:21.0:compile
[INFO] +- joda-time:joda-time:jar:2.9.9:compile
[INFO] +- org.eclipse.persistence:eclipselink:jar:2.5.2:provided
[INFO] | +- org.eclipse.persistence:javax.persistence:jar:2.1.0:provided
[INFO] | \- org.eclipse.persistence:commonj.sdo:jar:2.1.1:provided
[INFO] +- org.eclipse.persistence:org.eclipse.persistence.jpa.modelgen.processor:jar:2.5.2:provided
[INFO] | +- org.eclipse.persistence:org.eclipse.persistence.core:jar:2.5.2:provided
[INFO] | | \- org.eclipse.persistence:org.eclipse.persistence.asm:jar:2.5.2:provided
[INFO] | \- org.eclipse.persistence:org.eclipse.persistence.jpa:jar:2.5.2:provided
[INFO] | +- org.eclipse.persistence:org.eclipse.persistence.antlr:jar:2.5.2:provided
[INFO] | \- org.eclipse.persistence:org.eclipse.persistence.jpa.jpql:jar:2.5.2:provided
[INFO] +- org.apache.httpcomponents:httpcore:jar:4.3.3:compile
[INFO] +- org.apache.httpcomponents:httpclient:jar:4.3.6:compile
[INFO] | +- commons-logging:commons-logging:jar:1.1.3:compile
[INFO] | \- commons-codec:commons-codec:jar:1.6:compile
[INFO] +- primefaces:primefaces:jar:5.3:compile
[INFO] +- primefaces.blacktie:primefaces.blacktie:jar:1.0:compile
[INFO] +- bootstrap:bootstrap:jar:1.0:compile
[INFO] +- org.apache.commons.validator.routines.EmailValidatororg.apache.commons.validator.routines.EmailValidator:org.apache.commons.validator.routines.EmailValidator:jar:1.0:compile
[INFO] \- javax:javaee-web-api:jar:7.0:provided
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.897 s
[INFO] Finished at: 2018-01-12T10:16:59+01:00
[INFO] Final Memory: 15M/215M
[INFO] ------------------------------------------------------------------------
我什至下载了 github google firebase sdk 的存储库并删除了那里所有的 guava 代码引用，但是当我尝试 read/write Firestore 时我遇到了类似的错误。似乎其他一些 google 库也依赖于那个蹩脚的小罐子。
我在不同依赖项的 Guava 版本中遇到了同样的问题。
我在 Gradle 中这样解决了这个问题：
configurations.all {
resolutionStrategy {
force 'com.google.guava:guava:17.0'
}
}
应该有一种 Maven 方式，否则将 Guava 从您的所有依赖项中排除，并将其显式添加到您的版本中。
它在全球范围内强制执行 Guava 版本。对我来说幸运的是，版本 17 与我所有的依赖项兼容。 16 岁或 18 岁以上的人都不是……可悲的是，这些人正在使用番石榴。
希望对您有所帮助，
此致
我正在尝试将我的 Java 网络项目连接到 Firebase，这样我就可以将我的数据存储在 Firestore 中。我正在使用 Java Admin SDK，遵循官方指南：FirebaseAdminSDK。遗憾的是，我在初始化 FirebaseAp 时遇到异常：
java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkState(ZLjava/lang/String;Ljava/lang/Object;)V
at com.google.firebase.FirebaseApp.checkNotDeleted(FirebaseApp.java:352)
at com.google.firebase.FirebaseApp.getOptions(FirebaseApp.java:267)
at com.google.firebase.FirebaseApp$TokenRefresher.<init>(FirebaseApp.java:434)
at com.google.firebase.FirebaseApp$TokenRefresher$Factory.create(FirebaseApp.java:535)
at com.google.firebase.FirebaseApp.<init>(FirebaseApp.java:113)
at com.google.firebase.FirebaseApp.initializeApp(FirebaseApp.java:201)
at com.google.firebase.FirebaseApp.initializeApp(FirebaseApp.java:188)
现在，我在这里和那里看到，这是 guava 项目的问题，建议使用不同版本的 guava 库。我尝试了从 18 开始的所有版本。
然后，我了解到这可能是由我的类路径中不同版本的不同库引用的多个番石榴库相互争斗引起的。所以，我检查了maven依赖树，看是否存在对guava的多个依赖。没有。
然后，我解压了 .WAR 文件，以查看使用我的应用程序将哪些确切的 jars 部署到 glassfish。那里只有一个番石榴罐（我的 pom.xml 文件指向的那个）。 老实说，我 运行 没主意了。请帮忙。您可以在下面看到 pom.xml 和生成的 maven 依赖关系树。
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.greenstudio</groupId>
<artifactId>trekking-project</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>trekking-project</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.google.firebase</groupId>
<artifactId>firebase-admin</artifactId>
<version>5.6.0</version>
<exclusions>
<exclusion>
<artifactId>guava</artifactId>
<groupId>com.google.guava</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>21.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.9</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.5.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa.modelgen.processor</artifactId>
<version>2.5.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.3.3</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.6</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
<dependency>
<groupId>primefaces.blacktie</groupId>
<artifactId>primefaces.blacktie</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>bootstrap</groupId>
<artifactId>bootstrap</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons.validator.routines.EmailValidatororg.apache.commons.validator.routines.EmailValidator</groupId>
<artifactId>org.apache.commons.validator.routines.EmailValidator</artifactId>
<version>1.0</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.8</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
依赖树
[INFO] Scanning for projects...
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom
Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom (11 kB at 18 kB/s)
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.jar
Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-dependency-plugin/2.8/maven-dependency-plugin-2.8.jar (153 kB at 709 kB/s)
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building trekking-project 1.0
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for primefaces:primefaces:jar:5.3 is missing, no dependency information available
[WARNING] The POM for primefaces.blacktie:primefaces.blacktie:jar:1.0 is missing, no dependency information available
[WARNING] The POM for bootstrap:bootstrap:jar:1.0 is missing, no dependency information available
[WARNING] The POM for org.apache.commons.validator.routines.EmailValidatororg.apache.commons.validator.routines.EmailValidator:org.apache.commons.validator.routines.EmailValidator:jar:1.0 is missing, no dependency information available
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ trekking-project ---
Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-archiver/2.3/plexus-archiver-2.3.pom
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[INFO] com.greenstudio:trekking-project:war:1.0
[INFO] +- com.google.firebase:firebase-admin:jar:5.6.0:compile
[INFO] | +- com.google.api-client:google-api-client:jar:1.22.0:compile
[INFO] | | +- com.google.oauth-client:google-oauth-client:jar:1.22.0:compile
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[INFO] | | \- com.google.code.gson:gson:jar:2.1:compile
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[INFO] | | \- com.google.code.findbugs:jsr305:jar:1.3.9:compile
[INFO] | +- com.google.api:api-common:jar:1.2.0:compile
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[INFO] | +- com.google.cloud:google-cloud-storage:jar:1.7.0:compile
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[INFO] | | | \- com.google.api.grpc:proto-google-iam-v1:jar:0.1.20:compile
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[INFO] | | | \- org.codehaus.jackson:jackson-core-asl:jar:1.9.11:compile
[INFO] | | \- com.google.apis:google-api-services-storage:jar:v1-rev108-1.22.0:compile
[INFO] | +- com.google.cloud:google-cloud-firestore:jar:0.25.0-beta:compile
[INFO] | | +- io.netty:netty-tcnative-boringssl-static:jar:2.0.3.Final:compile
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[INFO] | | +- com.google.api:gax-grpc:jar:0.25.1:compile
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[INFO] | | | \- org.threeten:threetenbp:jar:1.3.3:compile
[INFO] | | +- com.google.api.grpc:proto-google-cloud-firestore-v1beta1:jar:0.1.20:compile
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[INFO] | | | | +- com.google.instrumentation:instrumentation-api:jar:0.4.3:compile
[INFO] | | | | \- io.opencensus:opencensus-api:jar:0.5.1:compile
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[INFO] | | | \- io.netty:netty-handler-proxy:jar:4.1.14.Final:compile
[INFO] | | | \- io.netty:netty-codec-socks:jar:4.1.14.Final:compile
[INFO] | | +- io.grpc:grpc-stub:jar:1.6.1:compile
[INFO] | | \- io.grpc:grpc-auth:jar:1.6.1:compile
[INFO] | +- org.json:json:jar:20160810:compile
[INFO] | +- org.slf4j:slf4j-api:jar:1.7.25:compile
[INFO] | +- io.netty:netty-codec-http:jar:4.1.14.Final:compile
[INFO] | | \- io.netty:netty-codec:jar:4.1.14.Final:compile
[INFO] | +- io.netty:netty-handler:jar:4.1.14.Final:compile
[INFO] | | \- io.netty:netty-buffer:jar:4.1.14.Final:compile
[INFO] | | \- io.netty:netty-common:jar:4.1.14.Final:compile
[INFO] | \- io.netty:netty-transport:jar:4.1.14.Final:compile
[INFO] | \- io.netty:netty-resolver:jar:4.1.14.Final:compile
[INFO] +- com.google.guava:guava:jar:21.0:compile
[INFO] +- joda-time:joda-time:jar:2.9.9:compile
[INFO] +- org.eclipse.persistence:eclipselink:jar:2.5.2:provided
[INFO] | +- org.eclipse.persistence:javax.persistence:jar:2.1.0:provided
[INFO] | \- org.eclipse.persistence:commonj.sdo:jar:2.1.1:provided
[INFO] +- org.eclipse.persistence:org.eclipse.persistence.jpa.modelgen.processor:jar:2.5.2:provided
[INFO] | +- org.eclipse.persistence:org.eclipse.persistence.core:jar:2.5.2:provided
[INFO] | | \- org.eclipse.persistence:org.eclipse.persistence.asm:jar:2.5.2:provided
[INFO] | \- org.eclipse.persistence:org.eclipse.persistence.jpa:jar:2.5.2:provided
[INFO] | +- org.eclipse.persistence:org.eclipse.persistence.antlr:jar:2.5.2:provided
[INFO] | \- org.eclipse.persistence:org.eclipse.persistence.jpa.jpql:jar:2.5.2:provided
[INFO] +- org.apache.httpcomponents:httpcore:jar:4.3.3:compile
[INFO] +- org.apache.httpcomponents:httpclient:jar:4.3.6:compile
[INFO] | +- commons-logging:commons-logging:jar:1.1.3:compile
[INFO] | \- commons-codec:commons-codec:jar:1.6:compile
[INFO] +- primefaces:primefaces:jar:5.3:compile
[INFO] +- primefaces.blacktie:primefaces.blacktie:jar:1.0:compile
[INFO] +- bootstrap:bootstrap:jar:1.0:compile
[INFO] +- org.apache.commons.validator.routines.EmailValidatororg.apache.commons.validator.routines.EmailValidator:org.apache.commons.validator.routines.EmailValidator:jar:1.0:compile
[INFO] \- javax:javaee-web-api:jar:7.0:provided
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.897 s
[INFO] Finished at: 2018-01-12T10:16:59+01:00
[INFO] Final Memory: 15M/215M
[INFO] ------------------------------------------------------------------------
我什至下载了 github google firebase sdk 的存储库并删除了那里所有的 guava 代码引用，但是当我尝试 read/write Firestore 时我遇到了类似的错误。似乎其他一些 google 库也依赖于那个蹩脚的小罐子。
我在不同依赖项的 Guava 版本中遇到了同样的问题。
我在 Gradle 中这样解决了这个问题：
configurations.all {
resolutionStrategy {
force 'com.google.guava:guava:17.0'
}
}
应该有一种 Maven 方式，否则将 Guava 从您的所有依赖项中排除，并将其显式添加到您的版本中。
它在全球范围内强制执行 Guava 版本。对我来说幸运的是，版本 17 与我所有的依赖项兼容。 16 岁或 18 岁以上的人都不是……可悲的是，这些人正在使用番石榴。
希望对您有所帮助， 此致