Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

• 后端

1、错误：

我用Springboot3.1.7整合myBatisplus3.5.3时，出现下面的错误：

Bean named ‘ddlApplicationRunner’ is expected to be of type ‘org.springframework.boot.Runner’ but was actually of type ‘org.springframework.beans.factory.support.NullBean’

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

明明我的代码刚开始写，就起了一个头，竟然报错了！

demo框架如下：

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

(1)Demo1Application.java

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

(2)controller层：JOJOController.java

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

(3)service层：JOJOService.java

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

(4)mapper层：JOJOMapper.java

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

(5)数据库实体类：jojo.java

Springboot3整合myBatisplus报错：Bean named ‘ddlApplicationRunner‘ is expected to be of type ‘org.sprin

(6)pom.xml


    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        3.1.7
         
    
    com.example
    demo1
    0.0.1-SNAPSHOT
    demo1
    demo1
    
        17
    
    
        
            org.springframework.boot
            spring-boot-starter-web
        

        
            com.mysql
            mysql-connector-j
            runtime
        
        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.5.3
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
                
                    
                        paketobuildpacks/builder-jammy-base:latest
                    
                    
                        
                            org.projectlombok
                            lombok

是不是看起来非常正确！！没感觉有什么问题，有很多博客说要加上@MapperScan(“com.example.demo1.mapper”)之类的，但是我是加上了，还是有错误。

坑就在于springboot3.1.7需要更高版本的myBatisPlus！

2、解决办法：

把myBatisplus的版本升级到3.5.5，就可以了！！！

把

        
            com.baomidou
            mybatis-plus-boot-starter
            3.5.3

改为

        
            com.baomidou
            mybatis-plus-boot-starter
            3.5.5

本文来自网络，不代表协通编程立场，如若转载，请注明出处：https://net2asp.com/4d344ad303.html

赞 (0)
« 上一篇 1天前
下一篇 » 1天前

相关推荐