Error creating bean with name 'userMapper' defined in file [E:\idea-workspace\LUOJIANHUA\hotelbookingweb\target\classes\edu\wlxy\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: @TableId can't more than one in Class: "edu.wlxy.model.TUser".
时间: 2023-07-21 17:53:31 浏览: 199
这个错误的意思是在初始化 UserMapper 这个bean的时候出现了异常。异常的原因是在 TUser 类上有多个 @TableId 注解,而 MybatisPlus 只允许一个 @TableId 注解。因此,你需要去 TUser 类中检查 @TableId 的使用情况,将多余的 @TableId 注解删除,保留一个即可。
相关问题
解决org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController': Unsatisfied dependency expressed through field 'userService': Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userMapper': Error creating bean with name 'userMapper' defined in file [F:\secBachelor\agile\agile-software-development-master\rbac524-post\target\classes\com\lhm\rbac524post\mapper\UserMapper.class]: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required
这个异常通常是因为 Spring 容器无法满足依赖注入所需的依赖关系。具体而言,这个异常中包含三个 Error,分别是:
1. Error creating bean with name 'userController': Unsatisfied dependency expressed through field 'userService'
2. Error creating bean with name 'userService': Unsatisfied dependency expressed through field 'userMapper'
3. Error creating bean with name 'userMapper' defined in file [F:\secBachelor\agile\agile-software-development-master\rbac524-post\target\classes\com\lhm\rbac524post\mapper\UserMapper.class]: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required
从异常信息中可以看出,问题出现在 UserMapper 类上,提示缺少 sqlSessionFactory 或 sqlSessionTemplate 属性。这意味着 Spring 无法将 UserMapper 注入到 UserService 类中,因为 UserMapper 类的依赖关系没有被满足。
解决这个问题的方法是在 Spring 配置文件中为 UserMapper 类添加 sqlSessionFactory 或 sqlSessionTemplate 属性的配置。具体来说,你需要在 Spring 配置文件中添加以下内容:
```xml
<!-- 配置 SqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置 UserMapper -->
<bean id="userMapper" class="com.lhm.rbac524post.mapper.UserMapper">
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
```
其中,dataSource 是你的数据库连接池的配置,需要根据你的实际情况进行配置。这样就可以解决这个异常了。
请分析报错:org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController': Unsatisfied dependency expressed through field 'userMapper': Error creating bean with name 'userMapper' defined in file [D:\IdeaProjects\demo\target\classes\com\example\demo\mapper\UserMapper.class]: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required,并给出解决方案
这个报错提示是说,创建UserController这个Bean的时候发现依赖的UserMapper这个Bean创建失败了。具体原因是因为UserMapper依赖的sqlSessionFactory或者sqlSessionTemplate没有注入。
解决方案有两种:
1. 在UserMapper中注入sqlSessionFactory或者sqlSessionTemplate
可以在UserMapper中添加如下代码:
```java
@Autowired
private SqlSessionFactory sqlSessionFactory;
```
或者:
```java
@Autowired
private SqlSessionTemplate sqlSessionTemplate;
```
这样就能够在创建UserMapper时自动注入sqlSessionFactory或者sqlSessionTemplate了。
2. 在配置文件中显式配置UserMapper的依赖
可以在application.properties中显式配置UserMapper的依赖,如下所示:
```properties
mybatis.mapper-locations=classpath:mapper/*.xml
mybatis.type-aliases-package=com.example.demo.bean
# 显式配置UserMapper的依赖
mybatis.config=classpath:mybatis-config.xml
```
在mybatis-config.xml中添加如下代码:
```xml
<configuration>
<mappers>
<mapper class="com.example.demo.mapper.UserMapper" />
</mappers>
</configuration>
```
这样就能够在创建UserMapper时自动注入sqlSessionFactory或者sqlSessionTemplate了。
希望这些解决方案对你有所帮助!
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