Nav修改

src/main/java/com/lovenav/service/NavService.java

@@ -3,6 +3,7 @@ package com.lovenav.service;
 import com.lovenav.entity.Nav;
 
 import java.util.HashMap;
+import java.util.List;
 
 public interface NavService {
     public String deleteNav(Nav nav);
@@ -10,5 +11,5 @@ public interface NavService {
     public String selectNav(Nav nav);
     public String addNav(Nav nav);
 
-    HashMap<Integer,Object> selectAllNav();
+    List<Nav> selectAllNav();
 }

src/main/java/com/lovenav/service/serviceImpl/NavServiceImpl.java

@@ -8,6 +8,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import java.util.HashMap;
+import java.util.List;
 
 @Service
 public class NavServiceImpl implements NavService {
@@ -62,7 +63,7 @@ public class NavServiceImpl implements NavService {
     }
 
     @Override
-    public HashMap<Integer,Object> selectAllNav() {
+    public List<Nav> selectAllNav() {
         return navDao.selectAllNav();
     }
 }