java 字符模糊查询 javaweb模糊查询

查询情况1：查询所有的游戏信息（此处省略代码...）

查询情况2：模糊查询（以下代码）

代码说明：以下代码为，实现查询情况2

public List<Game> Query(Game g) {
		List<Game> list = new ArrayList<Game>();
		String sql = " SELECT * FROM game where 1=1  ";
		if(g.getGame_name() != null){//按照游戏名称查询
			sql+="  AND `game_name` LIKE '%"+g.getGame_name()+"%' ";
		}
		if(g.getGame_type()!=null ){//按照游戏类别查询
			sql+=" AND `game_type` LIKE '%"+g.getGame_type()+"%' ";
		}
		if(g.getGame_company() != null){//按照发行公司查询
			sql+=" AND `game_company` LIKE '%"+g.getGame_company()+"%' ";
		}
		if(g.getGame_year()!=0 ){//按照发行年份查询
			sql+=" AND `game_year` LIKE '%"+g.getGame_year()+"%' ";
		}
		ResultSet rs = this.executeQuery(sql);
		try {
			while (rs.next()) {
				Game game = new Game();
				game.setGame_id(rs.getInt("game_id"));
				game.setGame_name(rs.getString("game_name"));
				game.setGame_type(rs.getString("game_type"));
				game.setGame_company(rs.getString("game_company"));
				game.setGame_year(rs.getInt("game_year"));
				list.add(game);
			}
		} catch (SQLException e) {
			return null;
		}
		return list;
	}