第十三天、公众号点播课程和直播管理

一、实现公众号点播课程相关功能

1、课程列表和详情

1.1、需求说明

（1）点击课程中的分类，根据分类查询课程列表

（2）点击 去看看，进入课程详情页面

1.2、编写课程列表和详情接口

（1）创建CourseApiController

@Api(tags = "课程")
@RestController
@RequestMapping("/api/vod/course")
public class CourseApiController {

    @Autowired
    private CourseService courseService;

    @Autowired
    private ChapterService chapterService;

    //根据课程分类查询课程列表（分页）
    @ApiOperation("根据课程分类查询课程列表")
    @GetMapping("{subjectParentId}/{page}/{limit}")
    public Result findPageCourse(@ApiParam(value = "课程一级分类ID", required = true) @PathVariable Long subjectParentId,
                                 @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) {
        //封装条件
        CourseQueryVo courseQueryVo = new CourseQueryVo();
        courseQueryVo.setSubjectParentId(subjectParentId);
        //创建page对象
        Page<Course> pageParam = new Page<>(page,limit);
        Map<String,Object> map = courseService.findPage(pageParam,courseQueryVo);
        return Result.ok(map);
    }

    //根据ID查询课程
    @ApiOperation("根据ID查询课程")
    @GetMapping("getInfo/{courseId}")
    public Result getInfo(
            @ApiParam(value = "课程ID", required = true)
            @PathVariable Long courseId){
        Map<String, Object> map = courseService.getInfoById(courseId);
        return Result.ok(map);
    }
}