添加了查询最新的三百条火情信息的功能模块

src/main/java/com/xkrs/controller/FireController.java

@@ -47,4 +47,13 @@ public class FireController {
     public String selectFireBetweenTime(@RequestParam("code") String code, @RequestParam("startTime") String startTime, @RequestParam("endTime") String endTime){
         return fireService.selectFireBetweenTime(code,startTime,endTime);
     }
+
+    /**
+     * 查询最新的300条火情信息
+     * @return
+     */
+    @GetMapping("/findThreeHundredData")
+    public String findThreeHundredData(){
+        return fireService.findThreeHundredData();
+    }
 }

src/main/java/com/xkrs/dao/FireDao.java

@@ -38,4 +38,11 @@ public interface FireDao extends JpaRepository<Fire,Long>, JpaSpecificationExecu
      * @return
      */
     List<Fire> findByDeviceCode(String code);
+
+    /**
+     * 查询最新的300条火情信息
+     * @return
+     */
+    @Query(value = "select * from fire order by alarm_date desc limit 300",nativeQuery = true)
+    List<Fire> findThreeHundredData();
 }

src/main/java/com/xkrs/service/FireService.java

@@ -23,4 +23,10 @@ public interface FireService {
      * @return
      */
     String selectFireBetweenTime(String code, String startTime, String endTime);
+
+    /**
+     * 查询最新三百条火情信息
+     * @return
+     */
+    String findThreeHundredData();
 }

src/main/java/com/xkrs/service/impl/FireServerImpl.java

@@ -64,4 +64,18 @@ public class FireServerImpl implements FireService {
         }
         return outputEncapsulationObject(PromptMessageEnum.SUCCESS,fires,locale);
     }
+
+    /**
+     * 查询最新300条火情信息
+     * @return
+     */
+    @Cacheable(keyGenerator = "keyGenerator",unless="#result == null")
+    @Override
+    public String findThreeHundredData() {
+        List<Fire> threeHundredData = fireDao.findThreeHundredData();
+        if(threeHundredData == null || threeHundredData.size() == 0){
+            return outputEncapsulationObject(PromptMessageEnum.DATA_NONE,"暂时没有火情信息！",locale);
+        }
+        return outputEncapsulationObject(PromptMessageEnum.SUCCESS,threeHundredData,locale);
+    }
 }