Java 运行服务器时出现NoClassDefFoundError-GoogleAppEngine/Maven
我使用Maven来处理项目的依赖关系,但是当我尝试测试代码时,我得到以下错误和堆栈跟踪: Server Error 现在我不知道下一步该怎么办 提前谢谢 PS:对不起我的英语,我是一个绝望的法国人,需要帮助 在使用Maven时,可以在Java 运行服务器时出现NoClassDefFoundError-GoogleAppEngine/Maven,java,eclipse,maven,google-app-engine,objectify,Java,Eclipse,Maven,Google App Engine,Objectify,我使用Maven来处理项目的依赖关系,但是当我尝试测试代码时,我得到以下错误和堆栈跟踪: Server Error 现在我不知道下一步该怎么办 提前谢谢 PS:对不起我的英语,我是一个绝望的法国人,需要帮助 在使用Maven时,可以在pom.xml中添加以下代码: <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId>
pom.xml
中添加以下代码:
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
番石榴
番石榴
19
编辑:
请从您的
appengine-api-1.0-sdk
依赖项中删除提供的 感谢您的回答,我添加了此代码,但仍然有相同的错误。您是否也遵循了我链接的设置中的步骤?如果您正在谈论“初始化ObjectifyService”部分,不,我没有,因为我使用的是objectify v5。如果不是,我想是的,我会遵循其他部分(web.xml中的ObjectifyFilter)哦!非常感谢你的帮助!它起作用了!祝你周末愉快!我很高兴它成功了!请问,你能接受这个答案吗?
<?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>0.1.0-SNAPSHOT</version>
<groupId>com.something.somewhat</groupId>
<artifactId>project-name</artifactId>
<properties>
<appengine.maven.plugin.version>1.3.2</appengine.maven.plugin.version>
<appengine.api.sdk.version>1.9.63</appengine.api.sdk.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.showDeprecation>true</maven.compiler.showDeprecation>
</properties>
<prerequisites>
<maven>3.3.9</maven>
</prerequisites>
<dependencies>
<!-- Compile/runtime dependencies -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>1.9.63</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.2</version>
</dependency>
<!-- Test Dependencies -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.googlecode.objectify</groupId>
<artifactId>objectify</artifactId>
<version>5.1.21</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>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.3</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>display-dependency-updates</goal>
<goal>display-plugin-updates</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.maven.plugin.version}</version>
</plugin>
</plugins>
</build>
</project>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>