一、新建banner微服务

1、在service模块下创建子模块service-cms

2、使用代码生成器生成banner代码

（1）创建crm_banner表

（2）生成代码

3、配置application.properties

# 服务端口
server.port=8004
# 服务名
spring.application.name=service-cms
# mysql数据库连接
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/guli?serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=root
#返回json的全局时间格式
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8
#配置mapper xml文件的路径
mybatis-plus.mapper-locations=classpath:com/atguigu/cmsservice/mapper/xml/*.xml
#mybatis日志
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

4、创建启动类

创建CmsApplication.java

@SpringBootApplication
@ComponentScan({"com.atguigu"}) //指定扫描位置
@MapperScan("com.atguigu.cmsservice.mapper")
public class CmsApplication {
       public static void main(String[] args) {
           SpringApplication.run(CmsApplication.class, args);
       }

}

二、创建banner服务接口

1、创建banner后台管理接口

banner后台分页查询、添加、修改、删除接口

@RestController
@RequestMapping("/eduservice/banner")
@CrossOrigin
public class CrmBannerController {

     @Autowired
     private CrmBannerService bannerService;

     @ApiOperation(value = "获取Banner分页列表")
     @GetMapping("{page}/{limit}")
     public R index(
             @ApiParam(name = "page", value = "当前页码", required = true)
             @PathVariable Long page,

             @ApiParam(name = "limit", value = "每页记录数", required = true)
             @PathVariable Long limit) {

         Page<CrmBanner> pageParam = new Page<>(page, limit);
         bannerService.pageBanner(pageParam,null);
         return R.ok().data("items", pageParam.getRecords()).data("total", pageParam.getTotal());
     }

     @ApiOperation(value = "获取Banner")
     @GetMapping("get/{id}")
     public R get(@PathVariable String id) {
         CrmBanner banner = bannerService.getBannerById(id);
         return R.ok().data("item", banner);
     }

     @ApiOperation(value = "新增Banner")
     @PostMapping("save")
     public R save(@RequestBody CrmBanner banner) {
         bannerService.saveBanner(banner);
         return R.ok();
     }

     @ApiOperation(value = "修改Banner")
     @PutMapping("update")
     public R updateById(@RequestBody CrmBanner banner) {
         bannerService.updateBannerById(banner);
         return R.ok();
     }

     @ApiOperation(value = "删除Banner")
     @DeleteMapping("remove/{id}")
     public R remove(@PathVariable String id) {
         bannerService.removeBannerById(id);
         return R.ok();
     }
    }

2、创建banner前台查询接口

首页获取banner数据接口

@RestController
@RequestMapping("/educms/banner")
@Api(description = "网站首页Banner列表")
@CrossOrigin //跨域
public class BannerApiController {

     @Autowired
     private CrmBannerService bannerService;

     @ApiOperation(value = "获取首页banner")
     @GetMapping("getAllBanner")
     public R index() {
         List<CrmBanner> list = bannerService.selectIndexList();
         return R.ok().data("bannerList", list);
     }

    }

三、实现banner后台管理前端

实现banner后台的添加修改删除和分页查询操作，和其他后台管理模块类似