首页请分析报错：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

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

时间: 2023-07-21 07:19:59 浏览: 269

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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