由於NoClassDefFoundError無法啟動嵌入式容器

Question

我的SpringBoot應用程序在Eclipse IDE上運行良好，但是當我在Docker容器上運行應用程序時，其映像構建良好，但是當我運行該映像時，它將獲得ClassDefnotfound和無法啟動嵌入式容器的異常。

 How can I fix it?`

In Dockerfile
FROM java:8
EXPOSE 8080
ADD /target/docker.ras.jar docker.ras.jar
RUN sh -c 'touch /docker.ras.jar
ENTRYPOINT ["java","-jar","docker.ras.jar"]

    In pom.xml i also use maven plugin 

  <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>example.docker.ras</groupId> <artifactId>docker.ras</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.3.RELEASE</version> </parent> <name>docker.ras</name> <url>http://maven.apache.org</url> <properties> <java.version>1.8</java.version> <start-class>docker.ras.App</start-class> <docker.image.prefix>springio</docker.image.prefix> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <version>1.3.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>compile</scope> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-core</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>compile</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <executions> <execution> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>com.spotify</groupId> <artifactId>docker-maven-plugin</artifactId> <version>0.4.11</version> <configuration> <imageName>${docker.image.prefix}/${project.artifactId}</imageName> <dockerDirectory>src/main/docker</dockerDirectory> <resources> <resource> <targetPath>/</targetPath> <directory>${project.build.directory}</directory> <include>${project.build.finalName}.jar</include> </resource> </resources> </configuration> </plugin> </plugins> <finalName>docker.ras</finalName> </build> </project> 

我的錯誤堆棧跟蹤

Answer 1

檢查Docker容器中的Java版本。 希望您在工件之后運行該應用程序。 如果是這樣，請確保它正在添加所有依賴項。

Answer 2

這是因為您在部署中包括了服務器特定的API，或者是您的Servlet API版本錯誤。 我懷疑前者。

如果您使用的是maven，請檢查pom中提供的servlet api范圍。

還看

http://tomcat.apache.org/whichversion.html