我在执行构建的jar文件时遇到问题：
运行以下命令java -jar /build/libs/***.jar会给我带来一堆NoClassDefFoundError错误。
但是当我运行gradle bootrun时，它工作正常......
我已按照此处的说明操作：http://docs.spring.io/spring-boot/docs/current/reference/html/build-tool-plugins-gradle-plugin.html
我的build.gradle看起来像这样：
apply plugin: 'spring-boot'
sourceCompatibility = 1.5
version = '1.0'
buildscript {
repositories {
jcenter()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE")
}
}
springBoot {
mainClass = "org.gradle.App"
}
dependencies {
compile files('lib/selenium-server-standalone-2.47.1.jar')
}
谢谢。
答案 0 :(得分：1)
如果没有遗漏某些元素，可能会有点难以回答;如果你有一些奇特的东西，请突出或更好地分享你的应用程序，但基本上我能够使它与以下工作：
build.gradle文件非常像你的
apply plugin: 'spring-boot'
sourceCompatibility = 1.5
version = '1.0'
buildscript {
repositories {
jcenter()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE")
}
}
springBoot {
mainClass = "com.readinglist.ReadingListApplication"
}
repositories {
mavenCentral()
}
dependencies {
compile("org.springframework.boot:spring-boot-starter-web")
compile files('lib/selenium-server-standalone-2.47.1.jar')
testCompile('org.springframework.boot:spring-boot-starter-test')
}
我不知道它们是否有很大不同，但1.2.6版本的文档是http://docs.spring.io/spring-boot/docs/1.2.6.RELEASE/reference/html/build-tool-plugins-gradle-plugin.html#build-tool-plugins-gradle-dependencies-without-versions，他们确实提到了添加依赖项。
关于您的脚本的说明，仅仅是您的测试所必需的硒？您可以将compile files ..selenium更改为testCompile files ..selenium（甚至testRuntime）您的jar文件会感谢您。
有关信息，我为此测试构建了一个非常基本的Spring-Boot应用程序（基于Spring Boot In Action中的示例）
package com.readinglist;
import org.apache.log4j.Logger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.openqa.selenium.server.SeleniumServer;
@SpringBootApplication
public class ReadingListApplication {
private static Logger log = Logger.getLogger(ReadingListApplication.class);
public static void main(String[] args) {
SpringApplication.run(ReadingListApplication.class, args);
log.info("SeleniumServer ClassName is " + SeleniumServer.class.getName());
}
}
重要的是确保您拥有有效的main方法
作为参考，我的gradle执行是
fhenri@machine:~/project/examples/spring-boot/inactionbook/readinglist$ gradle build
:compileJava
warning: [options] bootstrap class path not set in conjunction with -source 1.5
warning: [options] source value 1.5 is obsolete and will be removed in a future release
warning: [options] target value 1.5 is obsolete and will be removed in a future release
warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
4 warnings
:processResources
:classes
:jar
:findMainClass
:startScripts
:distTar
:distZip
:bootRepackage
:assemble
:compileTestJava
warning: [options] bootstrap class path not set in conjunction with -source 1.5
warning: [options] source value 1.5 is obsolete and will be removed in a future release
warning: [options] target value 1.5 is obsolete and will be removed in a future release
warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
4 warnings
:processTestResources UP-TO-DATE
:testClasses
:test
:check
:build
BUILD SUCCESSFUL
Total time: 5.411 secs
最后运行你的命令
fhenri@machine:~/project/examples/spring-boot/inactionbook/readinglist$ java -jar build/libs/***.jar
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.2.6.RELEASE)
2015-10-13 19:18:01.625 INFO 94280 --- [ main] com.readinglist.ReadingListApplication : Starting ReadingListApplication on macbook-pro-de-frederic.home with PID 94280 (/Users/fhenri/project/examples/spring-boot/inactionbook/readinglist/build/libs/readinglist-1.0.jar started by fhenri in /Users/fhenri/project/examples/spring-boot/inactionbook/readinglist)
2015-10-13 19:18:01.679 INFO 94280 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@71c79795: startup date [Tue Oct 13 19:18:01 CEST 2015]; root of context hierarchy
2015-10-13 19:18:02.377 INFO 94280 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]
2015-10-13 19:18:03.141 INFO 94280 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2015-10-13 19:18:03.489 INFO 94280 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2015-10-13 19:18:03.491 INFO 94280 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.26
2015-10-13 19:18:04.727 INFO 94280 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2015-10-13 19:18:04.727 INFO 94280 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3053 ms
2015-10-13 19:18:05.379 INFO 94280 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2015-10-13 19:18:05.385 INFO 94280 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2015-10-13 19:18:05.386 INFO 94280 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2015-10-13 19:18:05.692 INFO 94280 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@71c79795: startup date [Tue Oct 13 19:18:01 CEST 2015]; root of context hierarchy
2015-10-13 19:18:05.757 INFO 94280 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2015-10-13 19:18:05.758 INFO 94280 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest)
2015-10-13 19:18:05.786 INFO 94280 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-10-13 19:18:05.787 INFO 94280 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-10-13 19:18:05.824 INFO 94280 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-10-13 19:18:05.940 INFO 94280 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2015-10-13 19:18:06.047 INFO 94280 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2015-10-13 19:18:06.050 INFO 94280 --- [ main] com.readinglist.ReadingListApplication : Started ReadingListApplication in 4.751 seconds (JVM running for 5.476)
2015-10-13 19:18:06.052 INFO 94280 --- [ main] com.readinglist.ReadingListApplication : SeleniumServer ClassName is org.openqa.selenium.server.SeleniumServer
如果您出现问题，请务必在进行一些更改后运行gradle clean。