修复正式考试批题错误

src/main/java/top/tqx/demo_1/dto/ExamGradeRequest.java

@@ -1,6 +1,7 @@
 package top.tqx.demo_1.dto;
 
 import com.fasterxml.jackson.annotation.JsonAlias;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.Data;
 
@@ -63,6 +64,7 @@ public class ExamGradeRequest implements Serializable {
     }
 
     @Data
+    @JsonIgnoreProperties(ignoreUnknown = true)
     public static class QuestionContent implements Serializable {
         private static final long serialVersionUID = 1L;