为什么我的春季启动应用程序总是在启动后立即关闭?

这是我的第一个Spring Boot代码。不幸的是，它总是关闭。我希望它能够持续运行，这样我的web客户端就可以从浏览器中获取一些数据。

package hello;
import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;


@Controller
@EnableAutoConfiguration
public class SampleController {


@RequestMapping("/")
@ResponseBody
String home() {
return "Hello World!";
}


public static void main(String[] args) throws Exception {
SpringApplication.run(SampleController.class, args);
}
}




[@localhost initial]$ java -jar build/libs/gs-spring-boot-0.1.0.jar


.   ____          _            __ _ _
/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
'  |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::            (v1.0.0.RC4)


2014-03-13 09:20:24.805  INFO 14650 --- [           main] hello.SampleController                   : Starting SampleController on localhost.localdomain with PID 14650 (/home/xxx/dev/gs-spring-boot/initial/build/libs/gs-spring-boot-0.1.0.jar started by xxx)
2014-03-13 09:20:25.002  INFO 14650 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@b9eec: startup date [Thu Mar 13 09:20:24 EDT 2014]; root of context hierarchy
2014-03-13 09:20:28.833  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Registering beans for JMX exposure on startup
2014-03-13 09:20:30.148  INFO 14650 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 0
2014-03-13 09:20:30.154  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'requestMappingEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=requestMappingEndpoint]
2014-03-13 09:20:30.316  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'environmentEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=environmentEndpoint]
2014-03-13 09:20:30.335  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'healthEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=healthEndpoint]
2014-03-13 09:20:30.351  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'beansEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=beansEndpoint]
2014-03-13 09:20:30.376  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'infoEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=infoEndpoint]
2014-03-13 09:20:30.400  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'metricsEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=metricsEndpoint]
2014-03-13 09:20:30.413  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'traceEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=traceEndpoint]
2014-03-13 09:20:30.428  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'dumpEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=dumpEndpoint]
2014-03-13 09:20:30.450  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'autoConfigurationAuditEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=autoConfigurationAuditEndpoint]
2014-03-13 09:20:30.465  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'shutdownEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=shutdownEndpoint]
2014-03-13 09:20:30.548  INFO 14650 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Located managed bean 'configurationPropertiesReportEndpoint': registering with JMX server as MBean [org.springframework.boot:type=Endpoint,name=configurationPropertiesReportEndpoint]
2014-03-13 09:20:30.589  INFO 14650 --- [           main] hello.SampleController                   : Started SampleController in 7.396 seconds (JVM running for 9.569)
2014-03-13 09:20:30.608  INFO 14650 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@b9eec: startup date [Thu Mar 13 09:20:24 EDT 2014]; root of context hierarchy
2014-03-13 09:20:30.610  INFO 14650 --- [       Thread-2] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 0
2014-03-13 09:20:30.624  INFO 14650 --- [       Thread-2] o.s.b.a.e.jmx.EndpointMBeanExporter      : Unregistering JMX-exposed beans on shutdown

请建议。

谢谢

注:构建。是Gradle的错。

dependencies {
// tag::jetty[]
compile("org.springframework.boot:spring-boot-starter-web") {
**exclude module: "spring-boot-starter-tomcat"**
}

一旦我去掉上面粗体的一行，一切都正常了。我的应用程序上下文现在是正确的。谢谢你戴夫

  .   ____          _            __ _ _
/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
'  |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot ::            (v1.0.0.RC4)


2014-03-13 13:58:08.965  INFO 7307 --- [           main] hello.Application                        : Starting
Application on  with PID 7307 (/ladev/home/xxx/dev/gs-spring-boot/initial/build/libs/gs-spring-boo
t-0.1.0.jar started by xxx)
2014-03-13 13:58:09.021  INFO 7307 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshi
ng org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@45490eb5: startup
date [Thu Mar 13 13:58:09 MDT 2014]; root of context hierarchy
2014-03-13 13:58:09.653  INFO 7307 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Overridi
ng bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]; scope=; abstract=fal
se; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanNam
e=org.springframework.boot.actuate.autoconfigure.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration;
factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class
path resource [org/springframework/boot/actuate/autoconfigure/ErrorMvcAutoConfiguration$WhitelabelErrorView
Configuration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3;
dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconf
igure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; in
itMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/au
toconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]

250985

小开

以下是解决方法:

检查pom.xml文件中是否没有spring-boot-start -web依赖项。为了让你的pom.xml文件正确，使用这个链接
小开
也许它不适合你的代码，但我发现如果你有这样的代码片段:

@SpringBootApplication public class SpringBootApacheKafkaApplication { public static void main(String[] args) { SpringApplication.run(SpringBootApacheKafkaApplication.class,args).close(); } }

然后只需删除close()方法。这解决了我的问题!也许我能帮上忙

小开

这适用于spring boot 2.0.0

取代

  <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>

与

<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>9.0.6</version>
</dependency>

小开

在我的情况下，我修复了这个问题如下:-

首先，我删除了(apache) C:\Users\myuserId\.m2\repository\org\apache

我在pom.xml文件中添加了以下依赖项

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

I have changed the default socket by adding below lines in resource file ..\yourprojectfolder\src\main\resourcesand\application.properties(I manually created this file)
```
 server.port=8099
spring.profiles.active=@spring.profiles.active@
```
对于我已经在<build>部分的pom.xml中添加了下面的块。
```
  <build>
.
.
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
.
.
</build>
```

My final pom.xml file look like

<?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.bhaiti</groupId>
<artifactId>spring-boot-rest</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>


<name>spring-boot-rest</name>
<description>Welcome project for Spring Boot</description>


<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.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</artifactId>
</dependency>


<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>


<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>


<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>


</dependencies>


<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>


</build>




</project>

小开

只是另一种可能性，

我更换了

    <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>

与

    <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

一开始没有任何问题

小开

如果你不想让你的spring成为一个web应用程序，那么只需添加@EnableAsync或@EnableScheduling到你的Starter

@EnableAsync
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}


}

小开

在gradle中，我在build.gradle.kts文件中替换了这一行

providedRuntime("org.springframework.boot:spring-boot-starter-tomcat")

用这个

compile("org.springframework.boot:spring-boot-starter-web")

工作正常。

小开

在我的情况下，我已经有maven依赖'spring-boot-starter-web'和项目将开始好没有自动停止时，我运行它作为springboot应用从IDE内部。然而，当我将它部署到美丽时，应用程序将立即启动和自动停止。所以我修改了我的主应用类来扩展SpringBootServletInitializer，这似乎已经修复了自动停止。

@SpringBootApplication public class MyApp extends SpringBootServletInitializer {  public static void main(String[] args) {
SpringApplication.run(MyApp.class, args);  }}

小开

我检查了这里和其他地方的答案，仍然有问题。它变成了(像操作)，我在kubernetes中运行，应用程序很好，但kubernetes有一个问题。

我忘记让我的应用程序启动基于我的端口环境变量。所以，kubernetes/helm告诉它在8443上运行，并对其进行活体探测，但它在我的application.properties中的其他端口(如8123)上运行。

kubernetes事件(get事件)显示活性探测失败，所以kubernetes每30秒左右就会杀死pod/应用程序。

小开

我也遇到过类似的问题。我只有以下入门网页包。

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

但这还不够。您还需要添加一个父类以获得其他所需的依赖项。

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

小开

如果您有一个注入了循环弹簧的依赖项，它将在没有警告的情况下失败，这取决于日志级别和其他一些因素。

类A注入类B，类B注入类A，在这个特殊情况下，通过构造函数。

小开

我用SPring boot开发工具在IntelliJIdea中初始化了一个新的SPring启动项目，但是在pom.xml中我只有依赖项

 ...
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
...

你还需要有工件spring-boot-starter-web。只需将这个依赖项添加到pom.xml

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

小开

我的应用程序是Spring启动批处理，并在应用程序的下面注释行。属性解决了问题

spring.main.web-application-type=none

小开

我也有过这样的问题，就我而言，这是由一个简单的笨拙错误引起的:我的班级有:

@SpringBootApplication
public class MyApplication implements ApplicationRunner {


public static void main(String[] args) {
SpringApplication.run(MyApplication.class, args);
}


public void run(ApplicationArguments args) throws Exception {


}

｝

我删除了“implements applicationrunner”;run方法(这是由于复制粘贴错误)然后它就工作了

小开

删除Maven m2文件夹(在linux ~/.m2上)并重新构建应用程序

小开

如果你正在使用Java 9 JPMS，添加spring-boot-start -web作为依赖是不够的，因为tomcat-embed lib在运行时不可用，spring引导不会将应用程序检测为web应用程序。

要解决这个问题，通过以下指令添加到模块-info.java for 主要应用使tomcat嵌入可用

 requires org.apache.tomcat.embed.core;

小开

在我的情况下，当我试图将5000条记录插入数据库时发生了问题(它工作得很好，记录更少)
对我有效的方法:取消pom.xml文件中的devtools依赖项注释:

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>

小开

以下是解决方法:

检查pom.xml文件中是否没有spring-boot-start -web依赖项。要获得正确的pom.xml文件，请使用这个链接start.spring.io

如果您有上述依赖关系，但仍然面临这个问题，则很可能存在您的嵌入式tomcat jar。要确认这一点，请在调试模式下运行maven build -

mvn spring-boot:run --debug