Question

注意：我在“可能重复的”问题中尝试了建议的答案，但不幸的是，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。我尝试过的：

cd %path_to_my_project_root%
mvn clean package
cd target
java -jar myApp.jar

错误是（翻译的，也许是错误的措词）：

myApp.jar中没有主清单属性

我尝试了在不同平台（例如here和here）上建议的不同解决方案。但是，据我了解，POM.xml似乎是一个问题。

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>

我抬起Manifest.MF，内容如下：

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

我似乎缺少的东西：

我查阅了jar文件，发现一些事情：

我缺少一个.jar.original文件
我的Spring-Boot-Version中没有Main-Class，Start-Class，Boot-Inf，也没有Manifest.MF自变量
我的jar仅包含三件事：META-INF，com（已编译的类）和application.properties文件。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

Answer 1

您缺少此Maven属性：

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<label class="switch">
   <input type="checkbox" class="taskcompletecheck">
   <span class="slider round taskcomplete2"></span>
</label>
<button type="button" class="btn btn-danger taskcomplete2">Button</button>

（其中必须包含调用<start-class>com.demo.MainClass</start-class>的Main-class）

Answer 2

我删除了插件中的<pluginManagement>标签，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。

MVN干净软件包无法正确创建JAR文件

2 个答案: