查询条数

04.系统编码/Backend/src/main/java/com/userinformation/backend/controller/UserController.java

@@ -26,6 +26,11 @@ public class UserController {
         return RequestResult.success(userService.userLogin(userAccountNumber, userPassword));
     }
 
+    @RequestMapping("findUserCount")
+    public RequestResult findUserCount(){
+        return RequestResult.success(userService.findUserCount());
+    }
+
     @RequestMapping("findAllUser")
     public RequestResult findAllUserPage(Integer current, Integer size){
         return RequestResult.success(userService.findAllUserPage(current, size));

04.系统编码/Backend/src/main/java/com/userinformation/backend/mapper/UserMapper.java

@@ -19,4 +19,6 @@ public interface UserMapper extends BaseMapper<User> {
     @SelectProvider(type = UserMapperProvider.class, method = "findUserByUserName")
     User findUserByUserName(String userName);
 
+    @SelectProvider(type = UserMapperProvider.class, method = "findUserCount")
+    Integer findUserCount();
    }

04.系统编码/Backend/src/main/java/com/userinformation/backend/mapper/provider/UserMapperProvider.java

@@ -14,4 +14,7 @@ public class UserMapperProvider {
         return "select * from user where user_name like CONCAT('%',#{userName},'%')";
     }
 
+    public String findUserCount(){
+        return "select count(1) from user";
+    }
 }

04.系统编码/Backend/src/main/java/com/userinformation/backend/service/UserService.java

@@ -20,6 +20,8 @@ public class UserService extends ServiceImpl<UserMapper, User> {
         return baseMapper.findUserByUserName(userName);
     }
 
+    public Integer findUserCount(){ return baseMapper.findUserCount(); }
+
     public List<User> findAllUserPage(Integer current, Integer size){
         IPage<User> page = new Page<>(current, size);
         return baseMapper.selectPage(page, null).getRecords();