[英]Could not find or load main class com.johnathanmarksmith.gradle.HelloWorld
我使用以下命令编译并运行helloworld jar文件,但出现错误
找不到或加载主类com.johnathanmarksmith.gradle.HelloWorld
谁能告诉我如何解决?
mkdir runnablejar
cd runnablejar
mkdir -p src/main/java
mkdir -p src/main/resources
mkdir -p src/test/java
mkdir -p src/test/resources
mkdir -p com/johnathanmarksmith/gradle
vi com/johnathanmarksmith/gradle/HelloWorld.java
(insert)
package com.johnathanmarksmith.gradle;
public class HelloWorld
{
public static void main(String[] args)
{
System.out.println("Hello World!");
}
}
vi build.gradle
apply plugin: 'java'
jar {
baseName = 'smith'
version = '1.0'
manifest {
attributes 'Main-Class': 'com.johnathanmarksmith.gradle.HelloWorld' }
}
gradle build
java -jar ./build/libs/smith-1.0.jar
我的构建结果就是成功
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:jar
:assemble
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test UP-TO-DATE
:check UP-TO-DATE
:build
BUILD SUCCESSFUL
问题是您在项目的根目录下而不是src/main/java
下创建了包文件夹。
它应该是:
mkdir -p src/main/java/com/johnathanmarksmith/gradle
vi src/main/java.com/johnathanmarksmith/gradle/HelloWorld.java
现在应该可以正常工作了。
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