一个非常简单的应用程序的Spring Boot异常

Question

    @SpringBootApplication
    @ComponentScan("com.ma.vegshopping")
    public class VegShoppingApplication {

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

            <?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.ma</groupId>
                <artifactId>VegShopping</artifactId>
                <version>0.0.1-SNAPSHOT</version>
                <packaging>jar</packaging>

                <name>VegShopping</name>
                <description>vegetable shopping list</description>

                <parent>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-parent</artifactId>
                    <version>1.5.2.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-security</artifactId>
                    </dependency>
                    <dependency>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-social-facebook</artifactId>
                    </dependency>
                    <dependency>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-web</artifactId>
                    </dependency>

                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <scope>runtime</scope>
                    </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>

ationConfigEmbeddedWebApplicationContext：上下文初始化过程中遇到异常-取消刷新尝试：org.springframework.beans.factory.unsatisfieddependencyException：创建名为“org.springframework.boot.autocigure.orm.jpa.HibernateJpaAutoConfiguration”的bean时出错：通过构造函数参数0表示的不满足的依赖项；嵌套异常为org.springframework.beans.factory.beanCreationException：创建类路径资源[org/springframework/boot/autocigure/jdbc/datasourceConfiguration$tomcat.class]中定义的名为“data source”的bean时出错：通过工厂方法实例化bean失败；嵌套异常为org.springframework.beans.beanInstantiationException：无法实例化[org.apache.tomcat.jdbc.pool.datasource]:工厂方法“data source”引发异常；嵌套异常为org.springframework.boot.autocigure.jdbc.DataSourceProperties$DataSourceBeanCreationException：无法确定数据库类型None的嵌入式数据库驱动程序类。如果您想要一个嵌入式数据库，请在类路径上放置一个受支持的数据库。如果要从特定配置文件加载数据库设置，则可能需要激活它（当前没有活动的配置文件）。

Answer 1

当Uput JPA时，hibernate jar被带入类路径。当类路径中有Hibernate时，选择Spring Boot AutoConfiguration来创建EntityManager。

这是Spring Boot的默认行为。由于您没有任何用于Hibernate的数据源，启动将失败。

尝试通过在application.properties/yml文件中提供属性来创建数据源。如果不想使用hibernate或jpa，那么从pom.xml中删除jpa starter