ssm中怎么搭建mybatisplus

在SSM框架中搭建Mybatis Plus，你需要先在pom.xml文件中添加依赖，例如：

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus</artifactId>
    <version>3.4.1</version>
</dependency>

接下来，你需要在自己的Java项目中添加Mybatis Plus配置文件，例如：

@Configuration
@MapperScan("com.example.mapper")
public class MybatisPlusConfig {

    @Autowired
    private DataSource dataSource;

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        return new MybatisPlusInterceptor();
    }

    @Bean(name = "mybatisSqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory() throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/*.xml"));
        MybatisConfiguration configuration = new MybatisConfiguration();
        configuration.setMapUnderscoreToCamelCase(true);
        configuration.addInterceptor(mybatisPlusInterceptor());
        sessionFactory.setConfiguration(configuration);
        return sessionFactory.getObject();
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate(@Qualifier("mybatisSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

配置完成后，你还需要在Mapper接口中添加对应的注解，例如：

@Repository
public interface UserMapper extends BaseMapper<User> {
}

这样就完成了在SSM框架中搭建Mybatis Plus的步骤。