【场景复现】

jdk21环境变量springboot3.x、mybatisplus generator3.5.3构建工程启动：

【原因分析】

显示 'factoryBeanObjectType' 属性的值类型不正确，应该是一个实现了 FactoryBean 接口的类的全限定名。

注解注入每层对象，找不到FactoryBean对象，基本还是IDEA自身缓存清理不干净。MyBatis Plus的版本在使用Freemaker生成的代码和Springboot3.2.x有点问题。

【解决】

SpringBoot3.1.x、MyBatisPlus3.5.3、JDK21、maven3.6.3启动工程

• pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.1.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.hu</groupId>
    <artifactId>test-jdk21</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>test-jdk21</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>21</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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>

        <!-- mysql驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.20</version>
            <scope>runtime</scope>
        </dependency>

        <!-- druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.18</version>
        </dependency>

        <!-- mybatis-plus-boot-starter -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.3</version>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.5.3</version>
        </dependency>

        <!-- freemarker -->
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.32</version>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>3.1.6</version>
                <configuration>
                    <image>
                        <builder>paketobuildpacks/builder-jammy-base:latest</builder>
                    </image>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

• application.yml

server:
  port: 8081
logging:
  level:
    com.hu: debug
spring:
  # 数据源配置
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/simpledemo?charactEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: root
    servlet:
      multipart:
        enabled: true
        max-file-size: 2000MB
        max-request-size: 2000MB
mybatis-plus:
  global-config:
    db-config:
      logic-delete-value: 1
      logic-not-delete-value: 0

【测试】

@GetMapping("/view/{id}")
    public Result<Org> queryOrgById(@PathVariable("id") Long id){
        return orgService.queryOrgById(id);
    }