将Spring Boot依赖项从1.5.3.RELEASE更新到2.2.7.RELEASE breaks App

Question

我是使用Spring Boot的新手，我从1.5.3复制了一个项目，并让应用程序运行在spring/application.java的这段代码中

@SpringBootApplication(scanBasePackages = "com.company")
@ComponentScan(basePackages = "com.company")
@EntityScan(basePackages = "com.company")
@EnableTransactionManagement
@EnableScheduling
public class Application {

    private static final Logger log = LoggerFactory.getLogger(Application.class);


    public static void main(String[] args) throws Exception {
        // log.info("Starting up... main args: " + Arrays.asList(args));
        System.setProperty("spring.devtools.restart.enabled", "false");        
        // Runs Orchestration:run(args) via Spring
        new SpringApplicationBuilder(Application.class)
                // .web(WebApplicationType.NONE) <- this part is uncommented in 2.2.7 run
                .run(args);

    }

}

我也有一个@Component类，它在SpringApplicatoinBuilder被调用之后运行。

@Component
public class Orchestration implements CommandLineRunner {

    @Override
    public void run(String...args) throws Exception {
       // stuff
    }

}

当我将模块pom文件中的所有依赖项从1.5.3.RELEASE升级到2.2.7.RELEASE时，应用程序似乎不再调用Orchestration @Component。我还查看了其他示例，并引入了本文https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.0-Migration-Guide中提到的migrator依赖项。但是没有幸运地正确运行Spring App。

<dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version>${spring-boot.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>4.3.5.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
        <version>${spring-boot.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jersey</artifactId>
        <version>${spring-boot.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <version>${spring-boot.version}</version>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <version>${spring-boot.version}</version>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>${spring-boot.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-properties-migrator</artifactId>
        <version>${spring-boot.version}</version>
    </dependency>
 </dependencies>

最糟糕的是，我没有得到任何编译或运行时错误，所以我不确定这里有什么地方不正确。有没有更有经验的Spring2.2.7专家可以帮我设置项目？

编辑10/13/2021 6:18 an当更新到2.5.5版本时，我在SpringApplicationBuilder类中收到错误消息...

Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
Caused by: java.lang.NoClassDefFoundError: org/springframework/core/metrics/ApplicationStartup
        at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:253)
        at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:266)
        at org.springframework.boot.builder.SpringApplicationBuilder.createSpringApplication(SpringApplicationBuilder.java:108)
        at org.springframework.boot.builder.SpringApplicationBuilder.<init>(SpringApplicationBuilder.java:97)
        at com.planalytics.rp.orchestration.spring.Application.main(Application.java:35)
        ... 8 more
Caused by: java.lang.ClassNotFoundException: org.springframework.core.metrics.ApplicationStartup
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:151)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 13 more

Answer 1

这些依赖项由您声明的Spring Boot核心工件提取。这通常是通过您声明为项目父pom的spring-boot-starter-parent来完成的。

为了将您的项目更新到Spring5(实际发布的版本)，您必须将spring-boot- starter -parent声明从1.5.3更新到2.X (如果不使用starter parent，则需要更新spring-boot-dependencies依赖版本)。你确实可以在Spring Boot 2的发行说明中读到：

Spring Boot 2.0构建在Spring Framework5之上，并且需要Spring Framework5。

请注意，从Spring Boot 1.5.3更新到Spring Boot 2可能会导致您的应用程序出现一些回归。因此，您应该小心地测试您的应用程序，以识别所有它们。Spring-Boot-2.0- migration -Guide也是简化迁移的好资源。

下面是通过将org.springframework.boot:spring-boot-starter:jar:2.0.2.RELEASE声明为项目的父级而获得的结果的一个片段

    $ mvn dependency:tree                                                                       
[INFO] Scanning for projects...                                                             
[INFO]                                                                                      
[INFO] ----------------------------------------------------             
[INFO] Building demo 0.0.1-SNAPSHOT                                                         
[INFO] --------------------------------[ jar ]---------------------------------             
[INFO]                                                                                      
[INFO] --- maven-dependency-plugin:3.0.2:tree (default-cli) @ demo ---                      
[INFO] com.example:demo:jar:0.0.1-SNAPSHOT                                                  
[INFO] +- org.springframework.boot:spring-boot-starter:jar:2.5.5.RELEASE:compile            
[INFO] |  +- org.springframework.boot:spring-boot:jar:2.5.5.RELEASE:compile                 
[INFO] |  |  \- org.springframework:spring-context:jar:5.0.6.RELEASE:compile                
[INFO] |  |     +- org.springframework:spring-aop:jar:5.0.6.RELEASE:compile                 
[INFO] |  |     +- org.springframework:spring-beans:jar:5.0.6.RELEASE:compile               
[INFO] |  |     \- org.springframework:spring-expression:jar:5.0.6.RELEASE:compile          
[INFO] |  +- org.springframework.boot:spring-boot-autoconfigure:jar:2.5.5.RELEASE:compile   
[INFO] |  +- org.springframework.boot:spring-boot-starter-logging:jar:2.5.5.RELEASE:compile`
...