java - 线程中的异常 "main"org.springframework.context.ApplicationContextException : Unable to start embedded container;

Question

当我运行 Spring 应用程序时遇到此错误:

Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:124)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:476)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:109)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:952)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:941)
    at com.dh.test.Application.main(Application.java:13)
Caused by: org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getEmbeddedServletContainerFactory(EmbeddedWebApplicationContext.java:174)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:147)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:121)
    ... 7 more

我的主类看起来像:

@Configuration
@ComponentScan
public class Application{

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

}

我正在尝试使用@Bean通过java类配置spring的属性:

@Configuration
@EnableJpaRepositories(
            entityManagerFactoryRef = "customerEntityManager",
            transactionManagerRef = "customerTransactionManager",
            basePackages = {"com.dh.test.repository.customer"})
public class CustomerDbConfig {

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(){
        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource());
        em.setPackagesToScan(new String[] {"com.dh.test.model.customer"});
        em.setJpaVendorAdapter(vendorAdapter);
        em.setJpaProperties(additionalJpaProperties());
        em.setPersistenceUnitName("customers");
        return em;
    }

    Properties additionalJpaProperties(){
        Properties properties = new Properties();
        properties.setProperty("hibernate.ddl-auto", "update");
        properties.setProperty("jdbc.dialect", "org.hibernate.dialect.MySQLDialect");
        properties.setProperty("hibernate.show-sql", "true");

        return properties;
    }

    @Bean
    public DataSource dataSource(){
        return DataSourceBuilder.create()
                .url("jdbc:mysql://localhost:3306/customer")
                .driverClassName("com.mysql.jdbc.Driver")
                .username("root")
                .password("root")
                .build();
    }   

    @Bean
    public JpaTransactionManager transactionManager(EntityManagerFactory customerEntityManager){
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(customerEntityManager);
        return transactionManager;
    }
}

我的 POM.xml 摘录

<?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>org.test</groupId>
    <artifactId>boot-multidb-sample</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>boot-multidb-sample</name>
    <description>Spring Boot Multiple Database Configuration</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.1.6.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <dependencies>

        <!-- Datasource and connection pool dependencies -->
        <!-- <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> 
            </dependency> -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.33</version>
        </dependency>

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jpa</artifactId>
        <version>2.0.8</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
    </dependency>
    </dependencies>


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

</project>

任何人都可以提供一个可能的解决方案来修复此错误，我尝试检查依赖项雇佣关系和我的项目中的依赖项。

Answer 1

在我看来，EmbeddedServletContainerFactory bean 尚未初始化。您需要启动它:

将@SpringBootApplication注释添加到您的Application类

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

@SpringBootApplication注解包含

• @配置
• @ComponentScan
• @EnableAutoConfiguration(这可能会解决您的问题)

此外，您可能需要在 pom 中添加 spring-boot-starter-web 依赖项:

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

来源: Spring boot error :Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean

Spring Boot: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean