随笔分类 - Spring
摘要:1.导入依赖 <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>s
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摘要:如果要调用UserDaoMysqlImpl接口实现类,那么需要在UserServiceImpl这个业务接口实现类,改变**private UserDao userDao= new UserDaoImpl();**这句代码为private UserDao userDao= new UserDaoMys
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