空格筛选

src/main/java/com/example/demo/serviceImpl/GeneralServiceImpl.java

@@ -8,10 +8,8 @@ import org.springframework.stereotype.Service;
 import java.time.LocalDateTime;
 import java.time.LocalTime;
 import java.time.ZoneId;
-import java.util.ArrayList;
-import java.util.Calendar;
-import java.util.Date;
-import java.util.List;
+import java.util.*;
+import java.util.stream.Collectors;
 
 /**
  * @program: GOLD
@@ -42,13 +40,22 @@ public class GeneralServiceImpl implements GeneralService {
     @Override
     public List<String> getGoods() {
         List<String> list = generalMapper.getGoods();
-        return list;
+        // 使用 Java 8 的 Stream API 过滤 null 和空字符串
+        List<String> filteredList = list.stream()
+                .filter(Objects::nonNull)  // 过滤掉 null 值
+                .filter(str -> !str.trim().isEmpty())  // 过滤掉空字符串和仅包含空白字符的字符串
+                .collect(Collectors.toList());
+        return filteredList;
     }
 
     @Override
     public List<String> getActivity() {
         List<String> list = generalMapper.getActivity();
-        return list;
+        List<String> filteredList = list.stream()
+                .filter(Objects::nonNull)  // 过滤掉 null 值
+                .filter(str -> !str.trim().isEmpty())  // 过滤掉空字符串和仅包含空白字符的字符串
+                .collect(Collectors.toList());
+        return filteredList;
     }