A component required a bean name

在学习spring-boot2.3.0的过程中遇到了Spring-boot: required a bean named 'entityManagerFactory' that could not be found或A component required a bean named 'entityManagerFactory' that could not be found.

解决办法：
我收到错误消息，例如“找不到名为'entityManagerFactory'的bean”。经过大量的谷歌搜索解决了这个问题。我为JPA设置了手动配置。

@Bean 
public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean(); 

    return sessionFactory;
}

但是默认情况下，JPA通过名称'entityManagerFactory'搜索sessionFactory，因此将我的代码更改为：

@Bean(name="entityManagerFactory")
public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();

    return sessionFactory;
}

可以手动设置 @Bean(name="entityManagerFactory") 也可以自动设置，就是方法名字一定要是entityManagerFactory

另一种解法

@Bean 
public LocalSessionFactoryBean entityManagerFactory() {
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean(); 

    return sessionFactory;
}

原文地址