java - os.s.boot.SpringApplication : Application run failed

Question

我是 Spring 的新人。我收到这个错误。这是我的日志:

:: Spring Boot ::        (v2.1.2.RELEASE)

    2019-01-31 15:55:08.747  INFO 9396 --- [           main] com.booksotre.BookstoreApplication       : Starting BookstoreApplication on DESKTOP-GK4K8H8 with PID 9396 (C:\Users\shakh\workspace\Bookstore\target\classes started by shakh in C:\Users\shakh\workspace\Bookstore)
    2019-01-31 15:55:08.752  INFO 9396 --- [           main] com.booksotre.BookstoreApplication       : No active profile set, falling back to default profiles: default
    2019-01-31 15:55:09.042  WARN 9396 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.booksotre.BookstoreApplication]; nested exception is java.io.FileNotFoundException: class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfigurerAdapter.class] cannot be opened because it does not exist
    2019-01-31 15:55:09.380 ERROR 9396 --- [           main] o.s.boot.SpringApplication               : Application run failed

    org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.booksotre.BookstoreApplication]; nested exception is java.io.FileNotFoundException: class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfigurerAdapter.class] cannot be opened because it does not exist
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:181) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:315) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:232) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:691) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:528) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at com.booksotre.BookstoreApplication.main(BookstoreApplication.java:10) [classes/:na]
    Caused by: java.io.FileNotFoundException: class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfigurerAdapter.class] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180) ~[spring-core-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:51) ~[spring-core-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[spring-core-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.createMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:88) ~[spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.getMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:75) ~[spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
        at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:81) ~[spring-core-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.asSourceClass(ConfigurationClassParser.java:685) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser$SourceClass.getSuperClass(ConfigurationClassParser.java:998) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:332) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:242) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:191) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:295) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:242) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:199) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:167) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
        ... 13 common frames omitted

这是我的 pom.xml 文件:

<?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>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.2.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.booksotre</groupId>
<artifactId>bookstore</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Bookstore</name>
<description>frontend part of book store</description>

<properties>
    <java.version>1.8</java.version>
</properties>

<dependencies>


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

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

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.14</version>
    </dependency>

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

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

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

Answer 1

您的依赖项似乎存在冲突，因为您已经有了 spring-boot-starter-web，因此不需要 spring-core，因此删除它并再次构建项目应该可以工作。

删除

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

仅具有网络依赖性:

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