Spring Boot App在启动时终止

Question

我正在尝试一个简单的Spring启动应用程序它总是自动关闭

 :: Spring Boot ::        (v1.4.1.RELEASE)
2016-10-23 13:05:21.681  INFO 16532 --- [           main] com.example.RestBootApplication          : No active profile set, falling back to default profiles: default
2016-10-23 13:05:21.766  INFO 16532 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@6e20b53a: startup date [Sun Oct 23 13:05:21 EDT 2016]; root of context hierarchy
2016-10-23 13:05:23.682  INFO 16532 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2016-10-23 13:05:23.704  INFO 16532 --- [           main] com.example.RestBootApplication          : Started RestBootApplication in 2.632 seconds (JVM running for 5.168)
2016-10-23 13:05:23.705  INFO 16532 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@6e20b53a: startup date [Sun Oct 23 13:05:21 EDT 2016]; root of context hierarchy
2016-10-23 13:05:23.708  INFO 16532 --- [       Thread-2] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown

波姆。xml

<?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.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.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.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>
    </build>


</project>

主类

@SpringBootApplication
public class RestBootApplication {

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

控制器

@Controller
public class HelloController {

    @RequestMapping("/hello")
    String helloWorld(){
        return "helloWorld";
    }

}

尝试在Spring工具套件中运行。启动后总是停止。我甚至在看了一些stackoverflow问题后添加了“spring-boot-starter-web”，但仍然面临问题。

请你能有人指出这个问题。

Answer 1

检查您获得的退出代码。

如果您得到“进程完成退出代码1”表示正在抛出异常。因此，您可以在SpringApplication.run（）语句周围放置一个try catch块并打印出堆栈跟踪。

public static void main(String[] args) {
    try {
        SpringApplication.run(MyApplication.class, args);
    } catch (Exception e) {
        e.printStackTrace(); 
    }
}

塔伦的例子来自：https://stackoverflow.com/a/59017774/9531109

Answer 2

这发生在我身上，结果是一个损坏的maven apache存储库。

为了修复它，我删除了apache repo——在我的Mac上，它位于/Users/myname/。m2/repository/org/apache。

在个人电脑上，它应该是c：\user\myname. m2\repository\org\apache。

然后我运行了Maven-Update项目，然后我运行了我的类，它被修复了。

Answer 3

就我而言，只是将以下内容添加到pom文件中

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