SQl語句
<insert?id="addMessage"?parameterType="com.imooc.bean.Message">
		insert?into?MESSAGE(command,description,content)?values(#{command},#{description},#{content})
	</insert>

dao層
/**
	?*?新增消息
	?*/
	public?void?addMessage(Message?message)?{
		DBAccess?dbAccess?=?new?DBAccess();
		SqlSession?sqlSession?=?null;
		try?{
			sqlSession?=?dbAccess.getSqlSession();
			//?通過sqlSession執行SQL語句
			sqlSession.insert("Message.addMessage",?message);
			sqlSession.commit();
		}?catch?(IOException?e)?{
			e.printStackTrace();
		}?finally?{
			if?(sqlSession?!=?null)?{
				sqlSession.close();
			}
		}
	}

service層
/**
	?*?添加信息
	?*/
	public?void?addMessage(Message?message)?{
		MessageDao?messageDao?=?new?MessageDao();
		messageDao.addMessage(message);
	}

servlet層
public?class?AddMessageServlet?extends?HttpServlet{
	
	@Override
	protected?void?doGet(HttpServletRequest?req,?HttpServletResponse?resp)?throws?ServletException,?IOException?{
		//?設置編碼
		req.setCharacterEncoding("UTF-8");
		String?commands?=?req.getParameter("commands");
		String?descriptions?=?req.getParameter("descriptions");
		String?contents?=?req.getParameter("contents");
		Message?message?=?new?Message();
		message.setCommand(commands);
		message.setDescription(descriptions);
		message.setContent(contents);
		MaintainService?maintainService?=?new?MaintainService();
		maintainService.addMessage(message);
		//?跳轉
		req.getRequestDispatcher("/List.action").forward(req,?resp);
	}

	@Override
	protected?void?doPost(HttpServletRequest?req,?HttpServletResponse?resp)?throws?ServletException,?IOException?{
		this.doGet(req,?resp);
	}

}

jsp頁面
<form?action="<%=basePath%>AddMessageServlet.action"?method="post">
		<table?align="center">
			<tr>
				<td>指令名稱:</td>
				<td><input?type="text"?name="commands"?/></td>
			</tr>
			<tr></tr>
			<tr>
				<td>描述:</td>
				<td><input?type="text"?name="descriptions"?/></td>
			</tr>
			<tr>
				<td>操作:</td>
				<td><input?type="text"?name="contents"?/></td>
			</tr>
			<tr>
				<td></td>
				<td><input?type="submit"?value="提交"?/></td>
			</tr>
		</table>
	</form>