Mybatis_PageHelper的使用

	@RequestMapping("")
	public String list(Model model, HttpServletRequest request) {
		String sqlId = "";
//		list = (sqlId, (request));
		Page<Object> list = (Page<Object>) (sqlId, (request));
//		("list", new PageInfo(list));
		("pageNum", ());
		("pages", ());
		("list", list);
		return "menu/list";
	}

	@SuppressWarnings("unchecked")
	public static <E> List<E> selectListByPage(String sqlId,Object parameter){
		Map<String, Object> map = (Map<String, Object>) parameter;
		String page = (String) ("page");
		int pageNum = 1;
		if(page != null && ().length() != 0){
			pageNum = (page);
		}
		(pageNum, , true);
		List<Object> result = getSqlSession(sqlId).selectList(sqlId, parameter);
		return dealMapResult(result);
	}

			<c:forEach items="${list}" var="item">
				<tr id='<c:out value="${}"/>' align="left">
					<td><c:out value="${}"/></td>
					<td><c:out value="${}"/></td>
					<td><c:out value="${}"/></td>
					<td><c:out value="${}"/></td>
					<td><c:out value="${}"/></td>
					<td><c:out value="${}"/></td>
					<td><c:out value="${}"/></td>
					<td οnclick='goEdit(<c:out value="${}"/>)'>编辑</td>
					<td οnclick='doDelete(<c:out value="${}"/>)'>删除</td>
				</tr>
			</c:forEach>
				<tfoot>
					<tr>
						<td colspan="9" align="center" class="p">
							<c:if test="${pageNum != 1}">
								<a href="?query=a&page=${pageNum - 1}">上一页</a>
							</c:if>
							<c:if test="${pages != 1}">
								<c:forEach var="pageIndex" begin="1" end="${pages}">
									<c:choose>
										<c:when test="${pageNum == pageIndex}">
											<a>${pageIndex}</a>
										</c:when>
										<c:otherwise>
											<a href="?query=a&page=${pageIndex}">${pageIndex}</a>
										</c:otherwise>
									</c:choose>
								</c:forEach>
							</c:if>
							<c:if test="${pageNum != pages}">
								<a href="?query=a&page=${pageNum+1}">下一页</a>
							</c:if>
						</td>
					</tr>
				</tfoot>

	<plugins>
	    <!-- packageName为PageHelper类所在包名 -->
	    <plugin interceptor="">
	        <property name="dialect" value="mysql"/>
	    </plugin>
	</plugins>

统一返回值为 Page<E>（可以直接按 List使用）,方便在页面使用EL表达式，如 ${}, ${}
对这种方式使用，一种是如果直接用Page包装list，还要单独get出来，再设置回去("pageNum", ());
第二种是使用PageInfo对list再包装一次，页面就可以直接使用("list", new PageInfo(list));
Mybatis_PageHelper