mysql - Spring boot、mvc、hibernate和mysql配置-sessionFactory错误

标签 mysql hibernate spring-mvc spring-boot

我是 Spring Boot 新手。我想用mysql、hibernate、jpa和jsp配置spring boot。当我想启动它时，我生成一个错误:“创建名称为“sessionFactory”等的 bean 时出错”，更多信息请参见 stacktrace:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [com/budget/configs/DatabaseConfig.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Class name must not be null
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:732) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) ~[spring-context-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) ~[spring-context-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.1.RELEASE.jar:1.4.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.1.RELEASE.jar:1.4.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.1.RELEASE.jar:1.4.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.1.RELEASE.jar:1.4.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.1.RELEASE.jar:1.4.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.1.RELEASE.jar:1.4.1.RELEASE]
at com.budget.HomeBudgetApplication.main(HomeBudgetApplication.java:15) [classes/:na]
Caused by: java.lang.IllegalArgumentException: Class name must not be null
at org.springframework.util.Assert.notNull(Assert.java:115) ~[spring-core-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.util.ClassUtils.convertClassNameToResourcePath(ClassUtils.java:960) ~[spring-core-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.scanPackages(LocalSessionFactoryBuilder.java:282) ~[spring-orm-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:434) ~[spring-orm-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1642) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1579) ~[spring-beans-4.3.3.RELEASE.jar:4.3.3.RELEASE]
... 16 common frames omitted

pom.xml `4.0.0

<groupId>com.budget</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>

<name>homeBudget</name>
<description>Demo project for Spring Boot</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.1.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-aop</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-el</artifactId>
        <scope>provided</scope>
    </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-data-rest</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.session</groupId>
        <artifactId>spring-session</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-validation</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-web-services</artifactId>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.hibernate.javax.persistence/hibernate-jpa-2.1-api -->
    <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.1-api</artifactId>
        <version>1.0.0.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</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>

    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
</dependencies>

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


<packaging>war</packaging>

`

HomeBudgetApplication.java

@Configuration
@EnableAutoConfiguration()
@ComponentScan({"com.budget.*"})
public class HomeBudgetApplication {

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

}
}

DatabaseConfig.java

 @Configuration
 @ComponentScan("com.budget.*")
 @EnableWebMvc
 @EnableTransactionManagement
 @PropertySource("classpath:application.properties")
public class DatabaseConfig extends WebMvcConfigurerAdapter {

@Autowired
private Environment env;

@Bean
public DataSource dataSource() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();

    dataSource.setDriverClassName(env.getProperty("spring.datasource.driverClassName"));
    dataSource.setUrl(env.getProperty("spring.datasource.url"));
    dataSource.setUsername(env.getProperty("spring.datasource.username"));
    dataSource.setPassword(env.getProperty("spring.datasource.password"));

    return dataSource;
}

@Bean
public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
    sessionFactoryBean.setDataSource(dataSource());
    sessionFactoryBean.setPackagesToScan(env.getProperty("com.budget.*"));
    sessionFactoryBean.setHibernateProperties(hibProperties());
    return sessionFactoryBean;
}

private Properties hibProperties() {
    Properties properties = new Properties();
    properties.put("spring.jpa.database-platform", env.getProperty("spring.jpa.database-platform"));
    properties.put("spring.jpa.hibernate.ddl-auto", env.getProperty("spring.jpa.hibernate.ddl-auto"));
    properties.put("spring.jpa.show-sql", env.getProperty("spring.jpa.show-sql"));
    return properties;
}

@Bean
public HibernateTransactionManager transactionManager() {
    HibernateTransactionManager transactionManager = new HibernateTransactionManager();
    transactionManager.setSessionFactory(sessionFactory().getObject());
    return transactionManager;
}

@Bean
public InternalResourceViewResolver viewResolver() {
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/jsp/");
    resolver.setSuffix(".jsp");
    return resolver;
}
}

应用程序属性

'spring.datasource.driverClassName=com.mysql.jdbc.Driver
 spring.datasource.url = jdbc:mysql://localhost:3306/budget
 spring.datasource.username=marcin
 spring.datasource.password=marcin123
 spring.jpa.database-platform=org.hibernate.dialect.MySQLDialect
 spring.jpa.show-sql=true
 spring.jpa.hibernate.ddl-auto=update
 entitymanager.packages.to.scan=com.budget'

最佳答案

首先使用框架，而不是围绕框架工作。您还声明您想使用 Spring Boot 和 JPA，但您的配置显示您正在努力不使用 Spring Boot，并且您不使用 JPA，而是使用普通的 hibernate。

首先删除您的DatabaseConfig。 (是的，将其删除)。

将您的 HomeBudgetApplication 移至 com.bugdet 并删除所有注释并替换为简单的 @SpringBootApplication。

@SpringBootApplication
public class HomeBudgetApplication {

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

在 application.properties 中添加 spring.mvc.view 属性以自动配置 InternalResourceViewResolver。还可以删除已经为您添加的 entitymanager.packages.to.scan 。 

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/budget
spring.datasource.username=marcin
spring.datasource.password=marcin123
spring.jpa.database-platform=org.hibernate.dialect.MySQLDialect
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update

spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp

其他一切都将由 Spring Boot 配置。它将检测您的 web、jpa 和交易并自动配置它。

如果您有任何基于 SessionFactory 的存储库等，请将其替换为在 EntityManager 上工作。

关于mysql - Spring boot、mvc、hibernate和mysql配置-sessionFactory错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39811797/

上一篇：php - 使用 PHP 将数组插入 MySQL 数据库？

下一篇：mysql - 选择 CakePHP 中除一列以外的所有列？

相关文章：

php - 如何使用 cURL 从网站获取特定数据，然后使用 php 将其保存在我的数据库中

java - hibernate 插入错误

java - 间歇性 SQLException : OALL8 is in an inconsistent state

mysql - 获取同一个表中的百分比

php - mySQL private/conn 问题

php - 如何创建语义搜索

mysql - 为辅助表生成的主键在 @OneToMany 关系上为空

spring - 阻止 Spring MVC Controller ？

java - Spring CORS 404

java - 错误 400——错误请求

©2024 IT工具网  联系我们