Spring 5样板项目无法运行

时间：2018-02-02 07:42:07

标签： java spring spring-mvc spring-boot spring-tool-suite

我在Spring 5上尝试了一个教程，并尝试通过start.spring.io使用默认元数据创建一个Spring Boot项目。

在Spring Tools Suite中导入

Version: 3.9.2.RELEASE
Build Id: 201712210947
Platform: Eclipse Oxygen.2 (4.7.2)

当我通过Spring Boot app运行时，我收到了这个异常

Caused by: java.lang.NoClassDefFoundError: org/springframework/aop/framework/AopProxyUtils
at org.springframework.context.event.AbstractApplicationEventMulticaster.addApplicationListener(AbstractApplicationEventMulticaster.java:105)
at org.springframework.boot.context.event.EventPublishingRunListener.<init>(EventPublishingRunListener.java:56)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:142)
... 7 more
Caused by: java.lang.ClassNotFoundException: org.springframework.aop.framework.AopProxyUtils
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 14 more

所以我将依赖项放在pom.xml中，这是我更新的pom.xml 

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.10.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-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-expression -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-expression</artifactId>
        <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>5.0.3.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.9.4</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.9.4</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.9.4</version>
    </dependency>       
</dependencies>

当我尝试使用更新的pom.xml运行时，

15:33:01.349 [main] DEBUG org.springframework.boot.logging.ClasspathLoggingApplicationListener - Application failed to start with classpath: [file:/Library/Java/JavaVirtualMachines/jdk1.8.0_151.jdk/Contents/Home/jre/lib/resources.jar, file:/Library/Java/JavaVirtualMachines/jdk1.8.0_151.jdk/Contents/Home/jre/lib/rt.jar, 
..
15:33:01.353 [main] ERROR org.springframework.boot.SpringApplication - Application startup failed
java.lang.NullPointerException: null
    at org.springframework.core.BridgeMethodResolver.findBridgedMethod(BridgeMethodResolver.java:60)
    at org.springframework.beans.GenericTypeAwarePropertyDescriptor.<init>(GenericTypeAwarePropertyDescriptor.java:70)

$ mvn -v
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T15:58:13+08:00)
Maven home: /opt/apache-maven-3.5.2
Java version: 1.8.0_151, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_151.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.13.3", arch: "x86_64", family: "mac"

$ java -version
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

2 个答案:

答案 0 :(得分：2)

您没有提供重现问题的信息，所以这就是我尝试过的......

  1. 从SPRING INITIALIZR页面我下载了demo.zip
  2. 我使用mvn clean install
    3. 构建了它
  3. 我使用java -jar target\demo-0.0.1-SNAPSHOT.jar从同一个文件夹运行应用程序，就是它

    4. 构建必须成功完成：

    $ mvn clean install

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.346 s
[INFO] Finished at: 2018-02-02T09:02:15+01:00
[INFO] Final Memory: 35M/314M
[INFO] ------------------------------------------------------------------------

    日志：

    $ java -jar target\demo-0.0.1-SNAPSHOT.jar

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::       (v1.5.10.RELEASE)

2018-02-02 09:02:27.556  INFO 18588 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication v0.0.1-SNAPSHOT on CZCHOWN5019295 with PID 18588 (C:\betlista\DGF_MDM\tmp\demo\target\demo-0.0.1-SNAPSHOT.jar started by msuska in c:\betlista\DGF_MDM\tmp\demo)
2018-02-02 09:02:27.560  INFO 18588 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2018-02-02 09:02:27.647  INFO 18588 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@255316f2: startup date [Fri Feb 02 09:02:27 CET 2018]; root of context hierarchy
2018-02-02 09:02:28.551  INFO 18588 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-02-02 09:02:28.578  INFO 18588 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 1.571 seconds (JVM running for 2.332)
2018-02-02 09:02:28.579  INFO 18588 --- [       Thread-2] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@255316f2: startup date [Fri Feb 02 09:02:27 CET 2018]; root of context hierarchy
2018-02-02 09:02:28.581  INFO 18588 --- [       Thread-2] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown

    我的Java和Maven版本：

    $ mvn -v
Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T17:41:47+01:00)
Maven home: c:\betlista\progs\apache-maven-3.3.9\bin\..
Java version: 1.8.0_74, vendor: Oracle Corporation
Java home: c:\java\jdk1.8.0_74\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "dos"

$ java -version
java version "1.8.0_141"
Java(TM) SE Runtime Environment (build 1.8.0_141-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.141-b15, mixed mode)

    初始pom.xml依赖项：

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

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

    快速检查 - 删除所有其他弹簧依赖项解决了问题。

    换句话说，我删除了所有<groupId>org.springframework</groupId>因为它应该在那里因为Spring Boot，所以非常可能是不兼容的版本......

    您可以使用mvn dependency:tree进一步调查。看起来Spring Boot使用的是Spring 4.3.14，而不是5.0.3，因为你添加了......

    为了解决您的原始问题 - 使用AopProxyUtils，它处于spring-aop，即spring-boot-starter-aop以及spring-boot-starter-web或spring-boot-starter- data-jpa你已经......

答案 1 :(得分：1)

如果你想今天使用Spring Boot测试Spring 5，你必须在http://start.spring.io/中选择“Spring Boot 2.0.0 RC1”

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