백그라운드 Dao 인터페이스와 UserLevelDao 구현
1693 단어 level
package cn.service.dao;
import java.util.List;
import cn.entity.UserLevel;
/*
* Dao
* */
public interface UserLevelDao {
//
public List<UserLevel> userLevelList();
}
package cn.service.dao.impl;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import cn.service.dao.BaseDao;
import cn.service.dao.UserLevelDao;
import cn.entity.UserLevel;
/*
* Dao
* */
public class UserLevelDaoImpl extends BaseDao implements UserLevelDao {
Connection conn = null;//
PreparedStatement pstmt = null;//
ResultSet rs = null;//
//
public List<UserLevel> userLevelList(){
String sql ="select user_leve_id, user_leve_content from user_level";
List<UserLevel> list = new ArrayList<UserLevel>();
UserLevel item = null;
conn=this.getConnection();
try {
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
while(rs.next()){
item = new UserLevel(
rs.getInt(1),
rs.getString(2)
);
list.add(item);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
this.closeAll(conn, pstmt, rs);
}
return list;
}
}