SpringMVC 项目中 创建SpringBoot后，引起的No bean named ‘xxx‘ available

Posted 2023-02-21 正怒月神

参考：

https://blog.csdn.net/weixin_44341110/article/details/115208375

https://blog.csdn.net/qq_40929531/article/details/103956332

我是sessionFactory 报错

No bean named 'sessionFactory' available

原因是我在springmvc中添加了springboot项目，

但是我的yml中并没有配置关于hibernate的相关配置（主要配置Transaction，不然无法增删改查，下面也会写到配置中）。

解决方案：

主要看jpa这一块：

server:
  port: 9020

spring:
  application:
    name: spring-boot-test
  datasource:
    url: jdbc:mysql://192.168.1.250:3306/kintech_camundaSpringBoot?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false&useOldAliasMetadataBehavior=true
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: abc
    password: abc
  jpa:
    generate-ddl: false
    hibernate:
      ddl-auto: none
      naming:
        physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
    database: mysql
    show-sql: false
    properties:
      hibernate:
        dialect: org.hibernate.dialect.MySQL5Dialect
        current_session_context_class: org.springframework.orm.hibernate5.SpringSessionContext
  session:
    store-type: none

添加配置文件：

package com.kintech.webCamunda.conf;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;

import java.util.Properties;

@Configuration
public class HibernateConfig 
    @Autowired
    private Environment environment;
    /*
     * 配置SessionFactory会话工厂注入到spring容器
     * */
    @Bean
    LocalSessionFactoryBean sessionFactory()
        LocalSessionFactoryBean localSessionFactoryBean = new LocalSessionFactoryBean();
        localSessionFactoryBean.setDataSource(getDataSource());
        localSessionFactoryBean.setPackagesToScan("com.kintech");
        localSessionFactoryBean.setHibernateProperties(hibernateProperties());
        return localSessionFactoryBean;
    
    /*
     * 配置数据源
     * */
    @Bean
    DriverManagerDataSource getDataSource()
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(environment.getProperty("spring.datasource.driver-class-name"));
        dataSource.setUsername(environment.getProperty("spring.datasource.username"));
        dataSource.setPassword(environment.getProperty("spring.datasource.password"));
        dataSource.setUrl(environment.getProperty("spring.datasource.url"));
        return dataSource;
    
    /*
     *设置hibernate配置属性
     * */
    private Properties hibernateProperties()
        Properties properties = new Properties();
        properties.setProperty("hibernate.naming-strategy",environment.getProperty("spring.jpa.hibernate.naming.physical-strategy"));
        properties.setProperty("hibernate.dialect",environment.getProperty("spring.jpa.properties.hibernate.dialect"));
        properties.setProperty("hibernate.current_session_context_class",environment.getProperty("spring.jpa.properties.hibernate.current_session_context_class"));
        properties.setProperty("hibernate.show_sql",environment.getProperty("spring.jpa.show-sql"));
        properties.setProperty("hibernate.hbm2ddl.auto",environment.getProperty("spring.jpa.hibernate.ddl-auto"));

        return  properties;
    

    @Bean("HibernateTransactionManager")
    public HibernateTransactionManager getHibernateTransactionManager(@Qualifier("getDataSource") DriverManagerDataSource dataSource, @Qualifier("sessionFactory") LocalSessionFactoryBean sessionFactory) 
        HibernateTransactionManager hibernateTransactionManager = new HibernateTransactionManager();
        /*localSessionFactoryBean.setMappingResources("");*///配置hibernate的xml实体映射文件
        hibernateTransactionManager.setDataSource(dataSource);

        //下面注意：你都让spring容器去管理类了，当然不能自己new了
        //要用spring的getBean方法去创建实例 这样spring才能帮你注入
        hibernateTransactionManager.setSessionFactory(sessionFactory.getObject());//这里要注意，sessionFactory必须是Spring注入的不然获取到的值为null
        return hibernateTransactionManager;