能搜了，就是有点问题，范围太广，啥都搜到了

src/main/java/org/cmh/backend/NewsManagement/controller/NewsController.java

@@ -4,6 +4,7 @@ import jakarta.persistence.EntityNotFoundException;
 import org.cmh.backend.NewsManagement.dto.GetNewsListResponse;
 import org.cmh.backend.NewsManagement.dto.MessageResponse;
 import org.cmh.backend.NewsManagement.dto.NewsRequest;
+import org.cmh.backend.NewsManagement.dto.SearchNewsRequest;
 import org.cmh.backend.NewsManagement.model.News;
 import org.cmh.backend.NewsManagement.service.NewsService;
 import org.cmh.backend.Utils.JwtUtil;
@@ -16,6 +17,8 @@ import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 @RestController
 @RequestMapping("/news")
 public class NewsController {
@@ -44,6 +47,14 @@ public class NewsController {
         return new ResponseEntity<>(new GetNewsListResponse(newsCount, newsService.getNewsByRange(start, end, user)), HttpStatus.OK);
     }
 
+    @PostMapping("/search")
+    @JwtVerify
+    public ResponseEntity<GetNewsListResponse> searchNews(@RequestBody SearchNewsRequest request) {
+        List<News> newsList = newsService.searchNews(request);
+        long newsCount = newsList.size();
+        return new ResponseEntity<>(new GetNewsListResponse(newsCount, newsList), HttpStatus.OK);
+    }
+
     @GetMapping("/{id}")
     @JwtVerify
     public ResponseEntity<News> getNewsPage(@PathVariable Long id, @RequestParam String token) {

src/main/java/org/cmh/backend/NewsManagement/dto/SearchNewsRequest.java

@@ -0,0 +1,15 @@
+package org.cmh.backend.NewsManagement.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.cmh.backend.Utils.JwtRequest;
+
+@Getter
+@Setter
+public class SearchNewsRequest extends JwtRequest {
+    private String author;
+    private String title;
+    private String imagePath;
+    private String summary;
+    private String sortBy;
+}

src/main/java/org/cmh/backend/NewsManagement/repository/NewsRepository.java

@@ -5,9 +5,19 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
+
 public interface NewsRepository extends JpaRepository<News, Long> {
     Page<News> findAllByOrderByIdDesc(Pageable pageable);
+
     Page<News> findByTenantOrderByIdDesc(String tenant, Pageable pageable);
 
+    List<News> findByTitleContainingOrSummaryContainingOrAuthorContainingOrImagePathContainingAndTenantEquals(
+            String title,
+            String summary,
+            String author,
+            String imagePath,
+            String tenant);
 
+    List<News> findByTitleContainingOrSummaryContainingOrAuthorContainingOrImagePathContaining(String title, String summary, String author, String imagePath);
 }

src/main/java/org/cmh/backend/NewsManagement/service/NewsService.java

@@ -2,9 +2,12 @@ package org.cmh.backend.NewsManagement.service;
 
 import jakarta.persistence.EntityNotFoundException;
 import org.cmh.backend.NewsManagement.dto.NewsRequest;
+import org.cmh.backend.NewsManagement.dto.SearchNewsRequest;
 import org.cmh.backend.NewsManagement.model.News;
 import org.cmh.backend.NewsManagement.repository.NewsRepository;
+import org.cmh.backend.Utils.JwtUtil;
 import org.cmh.backend.authentication.model.UserHS;
+import org.cmh.backend.authentication.service.UserService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
@@ -19,6 +22,9 @@ public class NewsService {
     @Autowired
     private NewsRepository newsRepository;
 
+    @Autowired
+    private UserService userService;
+
     public List<News> getNewsByRange(int start, int end, UserHS user) {
         if (start < 0 || end <= start) {
             throw new IllegalArgumentException("Invalid start or end range");
@@ -98,4 +104,24 @@ public class NewsService {
     public long getNewsCount() {
         return newsRepository.count();
     }
+    // TODO:完善用户权限
+    public List<News> searchNews(SearchNewsRequest request) {
+        String username = JwtUtil.extractUsername(request.getToken());
+        UserHS user = userService.getUserByUsername(username);
+        if (user.getSuperAdmin()) {
+            return newsRepository.findByTitleContainingOrSummaryContainingOrAuthorContainingOrImagePathContaining(
+                    request.getTitle(),
+                    request.getSummary(),
+                    request.getAuthor(),
+                    request.getImagePath()
+            );
+        }
+        return newsRepository.findByTitleContainingOrSummaryContainingOrAuthorContainingOrImagePathContainingAndTenantEquals(
+                request.getTitle(),
+                request.getSummary(),
+                request.getAuthor(),
+                request.getImagePath(),
+                user.getUsername()
+        );
+    }
 }