修改返回国家信息的数据结构

src/main/java/com/yupi/springbootinit/controller/HostInfoController.java

@@ -14,6 +14,7 @@ import org.apache.ibatis.annotations.Param;
 import org.springframework.web.bind.annotation.*;
 
 import javax.annotation.Resource;
+import java.util.ArrayList;
 import java.util.List;
 
 /*
@@ -39,9 +40,13 @@ public class HostInfoController {
     }
 
     @GetMapping("country_info")
-    public BaseResponse<List<CountryInfoVO>> getCountryInfo(@RequestParam(name = "countryName") String countryName){
-
-        return ResultUtils.success(hostInfoService.getCountryInfo(countryName));
+    public BaseResponse<List<String>> getCountryInfo(@RequestParam(name = "countryName") String countryName){
+        List<CountryInfoVO> countryInfo = hostInfoService.getCountryInfo(countryName);
+        List<String>countryNameList = new ArrayList<>();
+        for (CountryInfoVO countryInfoVO : countryInfo) {
+            countryNameList.add(countryInfoVO.getCountryName());
+        }
+        return ResultUtils.success(countryNameList);
     }
 
     @PostMapping("query_count")