无法从Spring Boot，Gradle和IntelliJ-Idea生成可执行的jar文件 [英] Can't produce an executable jar from Spring Boot, Gradle, and IntelliJ-Idea

问题描述

我创建了一个使用IntelliJ-Idea和Gradle作为构建引擎的Spring Boot Microservice。我没有改变最初的Spring Boot配置。我也没有对提供的 build.gradle 文件进行修改。我使用 starter.spring.io 通过IntelliJ-Idea构建了应用程序，并具有以下依赖项：

 编译（'org.springframework.boot：spring-boot-starter-data-jpa'）
编译（'org.springframework.boot：spring-boot-devtools'）
 compile（'org。 springframework.boot：spring-boot-starter-web'）
 runtime（'org.postgresql：postgresql'）
 testCompile（'org.springframework.boot：spring-boot-starter-test'）
  

该应用程序目前包含12个类和2个接口，并且是Web服务提供者。它在我的系统上运行良好，但是当我使用Gradle构建时，Manifest.MF不包含 Main-Class 条目。

我创建了一个非常简单的Hello World应用程序，并尝试了IDE和构建工具（Gradle和Maven）
的几种组合，并得到以下结果：

有趣的是，我能够在Eclipse中生成可执行的JAR文件，该JAR文件具有独立的Runnable JAR导出过程。

我对IntelliJ和Gradle相当陌生。有没有人看到过这种行为？任何想法，我可能在IntelliJ中做错了？我有我的Hello World项目，如果有人需要的话，我会将其压缩。

我接受了 M的建议。 Denium ，我从命令行完成了Gradle构建。创建的jar被正确格式化为可执行文件。一切都像魅力一样工作。实际上，Main-Class是一个名为 org.springframework.boot.loader.JarLauncher 的Spring Boot类，我的应用程序的主类位于名为 Start-Class 的属性中。 。 IDE完全错过了这一点。

I have created a Spring Boot Microservice using IntelliJ-Idea and Gradle as the build engine. I have made no changes to the initial Spring Boot configuration. I also have made no modifications to the build.gradle file provided. I built the application using starter.spring.io through IntelliJ-Idea and have the following dependencies:

compile('org.springframework.boot:spring-boot-starter-data-jpa')
compile('org.springframework.boot:spring-boot-devtools')
compile('org.springframework.boot:spring-boot-starter-web')
runtime('org.postgresql:postgresql')
testCompile('org.springframework.boot:spring-boot-starter-test')

The application currently contains 12 classes and 2 interfaces and is a Web Service provider. It runs fine on my system but when I build with Gradle, the Manifest.MF contains no Main-Class entry.

I created a very simple Hello World app and tried several combinations of IDE’s and build tools(Gradle and Maven) and got the following results:  

 

Interestingly, I was able to produce executable jars in Eclipse which has a separate Runnable JAR Export process.

I'm fairly new to IntelliJ and Gradle. Has anyone see this behavior before? Any ideas what I might be doing wrong in IntelliJ? I have my Hello World project zipped up if anyone needs it.

解决方案

I took the advise of M. Denium and I did the Gradle build from the Command Line. The jars created were formatted correctly to be executable. Everything worked like a charm. In fact the Main-Class is a Spring Boot class called org.springframework.boot.loader.JarLauncher and the main class for my app was in a property called Start-Class. The IDE totally misses this.

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