错误：jarfile /app.jar 无效或损坏

Question

我正在尝试将 Spring Boot 创建的微服务推送到 ibm 云托管的 K8 集群，但在启动时不断收到以下错误：

Error: Invalid or corrupt jarfile /app.jar

我的泊坞窗文件：

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ARG JAR_FILE
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

我的 pom.xml：

<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>projects</groupId>
  <artifactId>mydb2jdbcproject</artifactId>
  <version>1</version>

  <properties>
    <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>
    <java.version>1.8</java.version>
    <spring-cloud.version>Dalston.SR4</spring-cloud.version>
    <docker.image.prefix>springio</docker.image.prefix>
    <app.name>mydb2jdbcproject</app.name>
  </properties>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.15.RELEASE</version>
  </parent>

  <dependencies>
  <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
      <groupId>com.ibm.db2.jcc</groupId>
      <artifactId>db2jcc4</artifactId>
      <version>4.26.14</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-actuator</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-hystrix</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax.json</groupId>
      <artifactId>javax.json-api</artifactId>
      <version>1.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>com.jayway.jsonpath</groupId>
      <artifactId>json-path</artifactId>
      <version>2.4.0</version>
    </dependency>
    <dependency>
      <groupId>com.ibm.cloud</groupId>
      <artifactId>ibm-cloud-spring-boot-service-bind</artifactId>
      <version>1.1.1</version>
    </dependency>
    <dependency>
      <groupId>org.eclipse.microprofile.config</groupId>
      <artifactId>microprofile-config-api</artifactId>
      <version>1.1</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>${spring-cloud.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <repositories>
    <repository>
      <id>repo</id>
      <url>file://${project.basedir}/lib</url>
    </repository>
  </repositories>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>com.spotify</groupId>
        <artifactId>dockerfile-maven-plugin</artifactId>
        <version>1.4.9</version>
        <configuration>
          <repository>${docker.image.prefix}/${project.artifactId}</repository>
          <buildArgs>
            <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>
          </buildArgs>
        </configuration>
      </plugin>
        <plugin>
  <groupId>io.fabric8</groupId>
  <artifactId>docker-maven-plugin</artifactId>
  <extensions>true</extensions>
  <configuration>
    <images>
      <image>
        <name>us.icr.io/rbs1/rbstest</name>
        <build>
          <from>adoptopenjdk/openjdk8-openj9</from>
          <entryPoint>
            <exec>
              <arg>java</arg>
              <arg>-jar</arg>
              <arg>/${project.build.finalName}.jar</arg>
            </exec>
          </entryPoint>
          <assembly>
            <targetDir>/</targetDir>
            <mode>dir</mode>
            <descriptorRef>artifact</descriptorRef>
          </assembly>
        </build>
      </image>
    </images>
  </configuration>
</plugin>
    </plugins>
  </build>

</project>'

我的事件日志：

Events:
  Type     Reason     Age                    From                    Message
  ----     ------     ----                   ----                    -------
  Normal   Scheduled  9m10s                  default-scheduler       Successfully assigned default/basic-deployment-768559cfc6-6fd2j to 10.144.195.59
  Normal   Created    8m15s (x4 over 9m)     kubelet, 10.144.195.59  Created container
  Normal   Started    8m15s (x4 over 9m)     kubelet, 10.144.195.59  Started container
  Normal   Pulling    7m35s (x5 over 9m8s)   kubelet, 10.144.195.59  pulling image "------/---------"
  Normal   Pulled     7m34s (x5 over 9m)     kubelet, 10.144.195.59  Successfully pulled image "--------/---------"
  Warning  BackOff    4m6s (x24 over 8m57s)  kubelet, 10.144.195.59  Back-off restarting failed container

镜像保存在 Docker 存储库中，然后拉入集群。我已完全登录 docker 和 ibmcloud。每次容器都会重启6次但始终不成功。我跑

mvn package

每次在构建 docker 映像之前，请确保有一个可用的 jar，并且该 jar 保存在名为 mydb2jdbcproject-1 的目标文件夹中。

Answer 1

令人尴尬的是，我没有意识到我需要使用 .jar 文件指向正确的 jar 文件${JAR_FILE}。确保它指向我的应用程序 jar 后，一切正常。谢谢你！

留在这里以防有人需要。