我的第一个使用MySQL和JPA的Spring Boot应用程序立即关闭，我不知道原因。
2018-08-15 16:24:42.050 INFO 10960 --- [ restartedMain] com.classpath.SampleAppApplication : Starting SampleAppApplication on LAPTOP-MAI0FJBD with PID 10960 (C:\Users\classpath\projects\sample-app\target\classes started by classpath in C:\Users\classpath\projects\sample-app)
2018-08-15 16:24:42.065 INFO 10960 --- [ restartedMain] com.classpath.SampleAppApplication : No active profile set, falling back to default profiles: default
2018-08-15 16:24:42.160 INFO 10960 --- [ restartedMain] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@699320b1: startup date [Wed Aug 15 16:24:42 IST 2018]; root of context hierarchy
2018-08-15 16:24:43.978 INFO 10960 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2018-08-15 16:24:44.245 INFO 10960 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2018-08-15 16:24:44.291 INFO 10960 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2018-08-15 16:24:44.307 INFO 10960 --- [ restartedMain] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2018-08-15 16:24:44.369 INFO 10960 --- [ restartedMain] org.hibernate.Version : HHH000412: Hibernate Core {5.2.17.Final}
2018-08-15 16:24:44.369 INFO 10960 --- [ restartedMain] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2018-08-15 16:24:44.416 INFO 10960 --- [ restartedMain] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2018-08-15 16:24:44.526 INFO 10960 --- [ restartedMain] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2018-08-15 16:24:45.246 INFO 10960 --- [ restartedMain] o.h.t.schema.internal.SchemaCreatorImpl : HHH000476: Executing import script 'org.hibernate.tool.schema.internal.exec.ScriptSourceInputNonExistentImpl@49cf4e94'
2018-08-15 16:24:45.262 INFO 10960 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2018-08-15 16:24:46.058 INFO 10960 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2018-08-15 16:24:46.089 INFO 10960 --- [ restartedMain] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-08-15 16:24:46.089 INFO 10960 --- [ restartedMain] o.s.j.e.a.AnnotationMBeanExporter : Bean with name 'dataSource' has been autodetected for JMX exposure
2018-08-15 16:24:46.089 INFO 10960 --- [ restartedMain] o.s.j.e.a.AnnotationMBeanExporter : Located MBean 'dataSource': registering with JMX server as MBean [com.zaxxer.hikari:name=dataSource,type=HikariDataSource]
2018-08-15 16:24:46.105 INFO 10960 --- [ restartedMain] com.classpath.SampleAppApplication : Started SampleAppApplication in 4.437 seconds (JVM running for 4.942)
2018-08-15 16:24:46.121 INFO 10960 --- [ Thread-8] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@699320b1: startup date [Wed Aug 15 16:24:42 IST 2018]; root of context hierarchy
2018-08-15 16:24:46.121 INFO 10960 --- [ Thread-8] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
2018-08-15 16:24:46.121 INFO 10960 --- [ Thread-8] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans
2018-08-15 16:24:46.121 INFO 10960 --- [ Thread-8] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2018-08-15 16:24:46.121 INFO 10960 --- [ Thread-8] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2018-08-15 16:24:46.121 INFO 10960 --- [ Thread-8] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
Process finished with exit code 0
以下是在pom.xml文件中添加的依赖项。
http://maven.apache.org/xsd/maven-4.0.0.xsd“>
4.0.0
com.classpath
示例应用
0.0.1-快照
罐子
<name>sample-app</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.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-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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-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>
我还在下面添加了SpringBoot注释的类
package com.classpath;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SampleAppApplication {
public static void main(String[] args) {
SpringApplication.run(SampleAppApplication.class, args);
}
}
请让我知道我要去哪里哪里以及如何调试此问题。似乎Spring在这里做得太多了。
答案 0 :(得分：1)
您的数据库依赖性如何？在pom.xml中配置嵌入式数据库（H2，HSQL或Derby）或其他关系数据库，例如oracle或mysql依赖项。
示例：
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>runtime</scope>
</dependency>