[英]Mvn clean package not creating JAR-File properly
注意:我尝试了“可能重复的”问题中的建议答案,但可惜的是它们并没有帮助我。 我编辑了我的问题。
我设置了一个Spring-Boot应用程序(可以从Spring Tool Suite
IDE中执行)。 现在,我想构建jar文件并执行它。 我试过的
cd %path_to_my_project_root%
mvn clean package
cd target
java -jar myApp.jar
错误是(翻译的,也许是不正确的措辞):
myApp.jar中没有主清单属性
我尝试了在不同平台上建议的不同解决方案(例如here和here )。 但是,据我了解,这似乎是我的POM.xml
存在的问题。
我的Pom:
<?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>
<groupId>com.demo</groupId>
<artifactId>myApp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>myApp</name>
<description>desc</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-ldap</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.restdocs</groupId>
<artifactId>spring-restdocs-mockmvc</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<type>jar</type>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>ng</executable>
<workingDirectory>src/main/ui</workingDirectory>
<argument>
<argument>build</argument>
</argument>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
我查找了Manifest.MF
,这是内容:
Manifest-Version: 1.0
Implementation-Title: myApp
Implementation-Version: 0.0.1-SNAPSHOT
Built-By: me
Implementation-Vendor-Id: myPackage
Created-By: Apache Maven 3.6.0
Build-Jdk: 1.8.0_191
Implementation-URL: my_Url
我似乎缺少的是:
我查看了jar
-file文件,发现了几件事:
.jar.original
文件 Manifest.MF
没有Spring-Boot-Version
, Main-Class
, Start-Class
,也没有Boot-Inf
参数。 jar
仅包含三件事: META-INF
, com
(已编译的类)和application.properties
-file。 通常其中包含更多内容。 我的Application.properties
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://external.url/dbname?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
spring.datasource.username=user
spring.datasource.password=pass
spring.jpa.database = MYSQL
spring.jpa.show-sql = true
您缺少此Maven属性:
<start-class>com.demo.MainClass</start-class>
(它必须包含调用SpringApplication.run(..)
Main-class)
我删除了插件中的<pluginManagement>
-tag,之后构建它没有问题。 我不知道Tag会做什么(它不应该这样做),但似乎这是问题的触发因素。 感谢所有试图帮助我的人。
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