运行基于SpringBoot的docker镜像返回错误消息:jarfile /app.jar无效或损坏

Question

我按照Spring 官方教程(https://spring.io/guides/gs/spring-boot-docker/)来构建基于springBoot的应用程序到docker镜像.docker镜像已成功构建,但是当我想执行docker run命令以启动容器时,我收到以下错误消息:

Error: Invalid or corrupt jarfile /app.jar

并且包含器无法正常运行.

有人之前得到过相同的错误消息吗？我真的需要你的帮助.非常感谢你!

Answer 1

java应用程序的结构

Demo
??? src
|    ??? main
|    ?   ??? java
|    ?   ?   ??? org
|    ?   ?       ??? demo
|    ?   ?           ??? Application.java
|    ?   ??? resources
|    ?       ??? application.properties
|    ??? test
|         ??? java
|               ??? org
|                   ??? demo
|                         ??? Application.java  
????? Dockerfile
????? pom.xml

pom.xml的内容

<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.executablejar</groupId>
<artifactId>demo</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>demo Maven Webapp</name>
<url>http://maven.apache.org</url>

<properties>
    <java-version>1.8</java-version>
    <docker.image.prefix>springDemo</docker.image.prefix>
</properties>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.3.RELEASE</version>
</parent>

<dependencies>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </dependency>

    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
    <finalName>demo</finalName>
</build>

Dockerfile的内容

FROM java:8
EXPOSE 8080
ADD /target/app.jar demo.jar
ENTRYPOINT ["java","-jar","demo.jar"]

用于构建和运行映像的命令

转到项目目录.让我们说D:/ Demo

$ cd D/demo
$ mvn clean install
$ docker build demo .
$ docker run -p 8080:8080 -t demo