[英]spring boot with gradle 3 and java 7 fails at server startup
我已經開始玩gradle和spring boot並選擇了一些很好的'n easy tutorials,如下所示。 我的設置也列在下面。
雖然本教程指出需要Java 1.8,但我已經讀過gradle和boot也可以在Java 1.7上使用。
那么,為什么這個簡單的教程不適用於Java 1.7的任何原因? 顯然......
我創建我的gradlew如下: gradle wrapper --gradle-version 3.0
然后運行我的gradle build命令作為ususal: ./gradlew build && java -jar build/libs/gs-spring-boot-0.1.0.jar
in my項目目錄。
建立:
操作系統:12.04 LTS 32位
java版“1.7.0_80”
教程:
build.gradle( 注意 :我指定target / sourceCompatibility = 1.7):
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.0.RELEASE")
}
}
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot'
jar {
baseName = 'gs-spring-boot'
version = '0.1.0'
}
repositories {
mavenCentral()
}
sourceCompatibility = 1.7
targetCompatibility = 1.7
dependencies {
// tag::jetty[]
compile("org.springframework.boot:spring-boot-starter-web") {
exclude module: "spring-boot-starter-tomcat"
}
compile("org.springframework.boot:spring-boot-starter-jetty")
// end::jetty[]
// tag::actuator[]
compile("org.springframework.boot:spring-boot-starter-actuator")
// end::actuator[]
testCompile("junit:junit")
}
輸出:
請注意,錯誤發生在服務器啟動時,即: org.springframework.context.ApplicationContextException: Unable to start embedded container
vagrant@precise32:/vagrant/BootTutorial$ ./gradlew build && java -jar build/libs/gs-spring-boot-0.1.0.jar
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:findMainClass
:jar
:bootRepackage
:assemble
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test UP-TO-DATE
:check UP-TO-DATE
:build
BUILD SUCCESSFUL
Total time: 4.835 secs
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.4.0.RELEASE)
2016-09-03 18:57:49.456 INFO 2043 --- [ main] hello.Application : Starting Application on precise32 with PID 2043 (/vagrant/BootTutorial/build/libs/gs-spring-boot-0.1.0.jar started by vagrant in /vagrant/BootTutorial)
2016-09-03 18:57:49.518 INFO 2043 --- [ main] hello.Application : No active profile set, falling back to default profiles: default
2016-09-03 18:57:50.136 INFO 2043 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@65b0e5: startup date [Sat Sep 03 18:57:50 AEST 2016]; root of context hierarchy
2016-09-03 18:57:58.795 WARN 2043 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
2016-09-03 18:57:59.019 ERROR 2043 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137) ~[spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:535) ~[spring-context-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at hello.Application.main(Application.java:13) [classes!/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_80]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0_80]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_80]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_80]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [gs-spring-boot-0.1.0.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [gs-spring-boot-0.1.0.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [gs-spring-boot-0.1.0.jar:na]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:58) [gs-spring-boot-0.1.0.jar:na]
Caused by: org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getEmbeddedServletContainerFactory(EmbeddedWebApplicationContext.java:189) ~[spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:162) ~[spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:134) ~[spring-boot-1.4.0.RELEASE.jar!/:1.4.0.RELEASE]
... 16 common frames omitted
vagrant@precise32:/vagrant/BootTutorial$
使用Spring Boot 1.4,默認的Jetty版本是9.3,這需要JDK8。
如果您想堅持使用JDK7, 可以使用Jetty 9.2,如參考文檔中所述 。
你真的看過堆棧嗎? 它清楚地說“正在使用8080端口”。 有兩種可能性,要么您有某種服務器或服務偵聽端口8080,要么您在上次運行的后台有一個掛起的線程。
我不確定你的Application.java類是怎么樣的。但我猜你錯過了這樣的東西。
@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application {
public static void main(String[] args) {
SpringApplication.run(YourClassToRun.class, args);
}
}
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