我有一个使用 java 8 在应用程序引擎上部署的应用程序。
最近，当我尝试部署时，我在运行时收到此错误：
Uncaught exception from servlet
java.lang.NoSuchMethodError: com.google.api.client.http.HttpTransport.isMtls()Z
at com.google.api.services.storage.Storage$Builder.chooseEndpoint(Storage.java:11151)
at com.google.api.services.storage.Storage$Builder.<init>(Storage.java:11184)
at com.google.cloud.storage.spi.DefaultStorageRpc.<init>(DefaultStorageRpc.java:105)
at com.google.cloud.storage.StorageOptions$DefaultStorageRpcFactory.create(StorageOptions.java:49)
at com.google.cloud.storage.StorageOptions$DefaultStorageRpcFactory.create(StorageOptions.java:43)
at com.google.cloud.ServiceOptions.getRpc(ServiceOptions.java:482)
at com.google.cloud.storage.StorageImpl.<init>(StorageImpl.java:93)
at com.google.cloud.storage.StorageOptions$DefaultStorageFactory.create(StorageOptions.java:39)
at com.google.cloud.storage.StorageOptions$DefaultStorageFactory.create(StorageOptions.java:33)
at com.google.cloud.ServiceOptions.getService(ServiceOptions.java:469)
这是我的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>
<packaging>war</packaging>
<version>1.1-SNAPSHOT</version>
<groupId>my.com.myapp</groupId>
<artifactId>myapp</artifactId>
<repositories>
<repository>
<id>local-maven-repo</id>
<url>file:///${project.basedir}/local-maven-repo</url>
</repository>
</repositories>
<!-- [START set_versions] -->
<properties>
<appengine.sdk.version>1.9.46</appengine.sdk.version>
<google-api-client.version>1.21.0</google-api-client.version>
<objectify.version>5.1.5</objectify.version>
<guava.version>18.0</guava.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<prerequisites>
<maven>3.1.0</maven>
</prerequisites>
<dependencies>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.sdk.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<type>jar</type>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.appengine.tools</groupId>
<artifactId>appengine-gcs-client</artifactId>
<version>RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.apis/google-api-services-storage -->
<dependency>
<groupId>com.google.apis</groupId>
<artifactId>google-api-services-storage</artifactId>
<version>RELEASE</version>
</dependency>
<dependency>
<groupId>com.google.apis</groupId>
<artifactId>google-api-services-pubsub</artifactId>
<version>RELEASE</version>
</dependency>
<!-- slf4j API frontend binding with JUL backend -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-pubsub</artifactId>
<version>0.8.3-alpha</version>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-bigquery</artifactId>
<version>0.8.3-beta</version>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-storage</artifactId>
<version>0.8.3-beta</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
</dependency>
<!-- for comparing jsons check if soppurted on appengine for tests only-->
<dependency>
<groupId>org.skyscreamer</groupId>
<artifactId>jsonassert</artifactId>
<version>1.4.0</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-core for the integration reading from WEB-INF-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>2.5.6</version>
<!-- <scope>integration</scope> -->
</dependency>
<!--added for pdf...-->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging-api -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging-api</artifactId>
<version>1.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging-adapters -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging-adapters</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>fontbox</artifactId>
<version>1.8.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>1.8.0-SNAPSHOT</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/fluent-hc -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>fluent-hc</artifactId>
<version>4.5.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpmime -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.5.3</version>
</dependency>
<dependency>
<groupId>com.github.wnameless</groupId>
<artifactId>json-flattener-java7</artifactId>
<version>0.4.0</version>
</dependency>
</dependencies>
<build>
<!-- for hot reload of the web application -->
<outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
<plugins>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>2.2.0</version>
<configuration>
<projectId>my-project-id</projectId>
<version>my-version</version>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.3.7.v20160115</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>3.3</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<!--integration-test-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.19.1</version>
<configuration>
<parallel>methods</parallel>
<threadCount>10</threadCount>
</configuration>
<executions>
<execution>
<id>integration-test</id>
<goals>
<goal>integration-test</goal>
</goals>
</execution>
<execution>
<id>verify</id>
<goals>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
我会注意到，在过去已完成部署的电脑上部署时，部署效果很好，但在新电脑上首次部署时，我在运行时出现上述错误
我想我需要更改版本
<dependency>
<groupId>com.google.apis</groupId>
<artifactId>google-api-services-storage</artifactId>
<version>RELEASE</version>
</dependency>
应该是什么版本？
通常，当类路径中有同一类的两个版本时，会发生此类异常。可能发生的一些原因是：
- 您的依赖项包括两个版本的 google-api-client。我
没有看到任何直接依赖，所以它可能是传递性的
依赖性。你可以运行
mvn dependency:tree 并寻找google-api-client依赖关系和exclude其中一个罐子
- 您正在打包提供的
依赖性。可能应用程序引擎已经包含这样的 jar
使用 HttpTransport，如果您还包含此 HttpTransport 类
进入你的人工制品中它会产生问题。要修复此标识
哪个依赖项包含 HttpTransport 类并在您的 pom.xml 中
添加提供给它
- 该类包含在某些生成的存储库中的某些旧 jar 的类路径中。如果是这种情况，您所要做的就是重置您的环境。再次克隆存储库并重新初始化应用程序引擎
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