课程增加简介字段

src/main/java/xyz/playedu/api/request/backend/CourseRequest.java

@@ -15,14 +15,16 @@ import java.util.Map;
 @Data
 public class CourseRequest {
 
-    @NotNull(message = "title参数不存在")
     @NotBlank(message = "请输入课程标题")
     private String title;
 
-    @NotNull(message = "thumb参数不存在")
     @NotBlank(message = "请上传课程封面")
     private String thumb;
 
+    @NotBlank(message = "请填写课程简介")
+    @JsonProperty("short_desc")
+    private String shortDesc;
+
     @NotNull(message = "is_show参数不存在")
     @JsonProperty("is_show")
     private Integer isShow;