diff --git a/src/main/java/com/cuit/solarenergy/controller/SimulAndPredicController.java b/src/main/java/com/cuit/solarenergy/controller/SimulAndPredicController.java
index 0377431..01f8391 100644
--- a/src/main/java/com/cuit/solarenergy/controller/SimulAndPredicController.java
+++ b/src/main/java/com/cuit/solarenergy/controller/SimulAndPredicController.java
@@ -15,6 +15,7 @@ import com.cuit.solarenergy.service.SolarenergyService;
 import com.github.xiaoymin.knife4j.annotations.ApiSupport;
 import io.swagger.annotations.*;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -52,8 +53,12 @@ public class SimulAndPredicController {
             @ApiResponse(code = 500, message = "服务器内部错误"),
             @ApiResponse(code = 900, message = "失败")
     })
-    public RetResult<List<TGeoserverinfo>> getSolarSimulation(SolarPredicReq solarReq) {
+    public RetResult<TGeoserverinfo> getSolarSimulation(SolarPredicReq solarReq) {
         try {
+            //检验参数
+            if (StringUtils.isEmpty(solarReq.getRegionname()) || solarReq.getRegionname().equals("")){
+                throw new ParamsException("区域名称不能为空");
+            }
             log.info("太阳能日总辐射实时模拟");
             // 获取当前日期和时间的 Calendar 对象
             String time = solarReq.getTime();
@@ -66,7 +71,7 @@ public class SimulAndPredicController {
             }
             //3.查询tif
             log.info("Tif查询");
-            List<TGeoserverinfo> regionInfo = dataImportService.getTifByRegion(solarReq.getRegionname());
+            TGeoserverinfo regionInfo = dataImportService.getTifByRegionAndTime(solarReq.getRegionname());
             return RetResponse.makeOKRsp(regionInfo);
         }catch (RuntimeException e){
             return RetResponse.makeErrRsp("太阳能日总辐射实时模拟有误！"+e.getMessage());
@@ -86,8 +91,12 @@ public class SimulAndPredicController {
             @ApiResponse(code = 500, message = "服务器内部错误"),
             @ApiResponse(code = 900, message = "失败")
     })
-    public RetResult<List<TGeoserverinfo>> getSolarPrediction(SolarPredicReq solarReq) {
+    public RetResult<TGeoserverinfo> getSolarPrediction(SolarPredicReq solarReq) {
         try {
+            //检验参数
+            if (StringUtils.isEmpty(solarReq.getRegionname()) || solarReq.getRegionname().equals("")){
+                throw new ParamsException("区域名称不能为空");
+            }
             log.info("太阳能日总辐射预报");
             // 获取当前日期和时间的 Calendar 对象
             String time = solarReq.getTime();
@@ -100,7 +109,7 @@ public class SimulAndPredicController {
             }
             //3.查询tif
             log.info("Tif查询");
-            List<TGeoserverinfo> regionInfo = dataImportService.getTifByRegion(solarReq.getRegionname());
+            TGeoserverinfo regionInfo = dataImportService.getTifByRegionAndTime(solarReq.getRegionname());
             return RetResponse.makeOKRsp(regionInfo);
         }catch (RuntimeException e){
             return RetResponse.makeErrRsp("太阳能日总辐射实时模拟有误！"+e.getMessage());
diff --git a/src/main/java/com/cuit/solarenergy/mapper/TGeoserverinfoMapper.java b/src/main/java/com/cuit/solarenergy/mapper/TGeoserverinfoMapper.java
index 0a7655c..8082669 100644
--- a/src/main/java/com/cuit/solarenergy/mapper/TGeoserverinfoMapper.java
+++ b/src/main/java/com/cuit/solarenergy/mapper/TGeoserverinfoMapper.java
@@ -30,6 +30,8 @@ public interface TGeoserverinfoMapper extends BaseMapper<TGeoserverinfo> {
      * @return
      */
     List<TGeoserverinfo> getTifByRegion(@Param("region") String region);
+
+    TGeoserverinfo getTifByRegionAndTime(@Param("region") String region);
 }
 
 
diff --git a/src/main/java/com/cuit/solarenergy/service/DataImportService.java b/src/main/java/com/cuit/solarenergy/service/DataImportService.java
index 40e871f..38db575 100644
--- a/src/main/java/com/cuit/solarenergy/service/DataImportService.java
+++ b/src/main/java/com/cuit/solarenergy/service/DataImportService.java
@@ -79,6 +79,15 @@ public interface DataImportService {
      */
     List<TGeoserverinfo> getTifByRegion(String region);
 
+
+    /**
+     * 根据区域查询tif文件, 得到创建时间最新的一条
+     *
+     * @param region
+     * @return
+     */
+    TGeoserverinfo getTifByRegionAndTime(String region);
+
     /**
      * 获取图层信息
      * @return
diff --git a/src/main/java/com/cuit/solarenergy/service/impl/DataImportServiceImpl.java b/src/main/java/com/cuit/solarenergy/service/impl/DataImportServiceImpl.java
index e0326a5..cd18251 100644
--- a/src/main/java/com/cuit/solarenergy/service/impl/DataImportServiceImpl.java
+++ b/src/main/java/com/cuit/solarenergy/service/impl/DataImportServiceImpl.java
@@ -414,6 +414,17 @@ public class DataImportServiceImpl implements DataImportService {
 
     }
 
+    @Override
+    public TGeoserverinfo getTifByRegionAndTime(String region) {
+        try{
+            TGeoserverinfo tGeoserverinfo = new TGeoserverinfo();
+            tGeoserverinfo = tGeoserverinfoMapper.getTifByRegionAndTime(region);
+            return tGeoserverinfo;
+        }catch (ParamsException e){
+            throw new RuntimeException("数据库获取失败", e);
+        }
+    }
+
     @Override
     public List<String> getLayer() {
         try{
diff --git a/src/main/resources/mapper/TGeoserverinfoMapper.xml b/src/main/resources/mapper/TGeoserverinfoMapper.xml
index 72ebf88..faed2ab 100644
--- a/src/main/resources/mapper/TGeoserverinfoMapper.xml
+++ b/src/main/resources/mapper/TGeoserverinfoMapper.xml
@@ -38,4 +38,13 @@
         </where>
 
     </select>
+    <select id="getTifByRegionAndTime" resultType="com.cuit.solarenergy.entity.TGeoserverinfo">
+        select
+        <include refid="Base_Column_List"/>
+        from t_geoserverinfo
+        where
+        regionname = #{region}
+        order by createdate desc
+        limit 1
+    </select>
 </mapper>