一、 在spring中使用

在创建SqlSessionFactoryBean中指定mapperLocations参数，该参数为Resource[]，代码如下:

    @Bean
    public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource) throws IOException {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        bean.setDataSource(dataSource);
        Resource[] resources = resolver.getResources("classpath:mapper/*.xml");
        bean.setMapperLocations(resources);
        return bean;
    }

二、在springboot中使用

在配置文件中指定，多个路径使用`,`分割，代码如下：

mybatis:
  config-location: classpath:mybatis-config.xml
  mapper-locations: classpath:/mapper/*.xml,classpath:/others/*.xml

Tips: Mybatis的xml文件路径如下:

参考代码：

MabatisProperties类

public Resource[] resolveMapperLocations() {
    ResourcePatternResolver resourceResolver = new PathMatchingResourcePatternResolver();
    List<Resource> resources = new ArrayList<Resource>();
    if (this.mapperLocations != null) {
      for (String mapperLocation : this.mapperLocations) {
        try {
          Resource[] mappers = resourceResolver.getResources(mapperLocation);
          resources.addAll(Arrays.asList(mappers));
        } catch (IOException e) {
          // ignore
        }
      }
    }
    return resources.toArray(new Resource[resources.size()]);
  }