springMVC+ajax分页查询

项目用到ajax技术的查询，查询结果很多时候要分页展示。这两天摸索了一下，在这里做一总结，方便自己随时查看，

也方便后人参考。

这里的顺序遵从从前台页面到后台控制器，业务层，Dao层，Mapper

下面先讲页面，页面js代码如下：

[javascript] view plain copy print ?

<span style="font-size:14px;">/* 全局变量 */
var userCount;//符合查找条件的用户总页数，分页参考
var pageIndex = 0;//当前页，默认为0
var pageSize = 8;//每页显示个数为8
//按条件查找用户
function searchUser(index,size) {
var findTerm = $("#serchTerm").val();
var provinceId = $('#province').val();
var cityId = $('#city').val();
$.ajax({
type : "POST",
url : "user/findContactsAjax",
cache : false,
data : {
provinceId : provinceId,
cityId : cityId,
pageIndex:index,
pageSize:size
},
async : true,
error : function() {
alert("网络异常！");
},
success : function(data) {
<span style="white-space:pre"> </span>userCount=Math.ceil(data[0].userCount/8);<span style="white-space:pre"> </span>var page='<div id="userPage" align="center" ><font size="2">共'
+userCount+'页</font> <font size="2">第'
+(pageIndex+1)+'页</font> <a href="javascript:void" onclick="GoToFirstPage()" id="aFirstPage" >首页</a> '
+'<a href="javascript:void" onclick="GoToPrePage()" id="aPrePage" >上一页</a> '
+'<a href="javascript:void" onclick="GoToNextPage()" id="aNextPage" >下一页</a> '
+'<a href="javascript:void" onclick="GoToEndPage()" id="aEndPage" >尾页</a> ';
page+='</div>';
$("#serchResult").append(page);
document.getElementById("dltitle").innerHTML = "查找结果如下";
}
}
});
}
//首页
function GoToFirstPage() {
pageIndex = 0;
searchUser( pageIndex, pageSize);
}
//前一页
function GoToPrePage() {
pageIndex -= 1;
pageIndex = pageIndex >= 0 ? pageIndex : 0;
searchUser( pageIndex, pageSize);
}
//后一页
function GoToNextPage() {
if (pageIndex + 1 < userCount) {
pageIndex += 1;
}
searchUser( pageIndex, pageSize);
}
//尾页
function GoToEndPage() {
pageIndex = userCount - 1;
searchUser( pageIndex, pageSize);
}</span>

控制层代码如下：

[javascript] view plain copy print ?

@RequestMapping("findContactsAjax")
public @ResponseBody
Map<String, Object> findContactAjax(String provinceId,String cityId,String pageIndex,String pageSize) {
List<User> listUsers = userDao.selectUserByProvinceAndCity(provinceId, cityId,pageIndex,pageSize)
}
map.put("user", listUsers);
return map;
}

Dao层：

[java] view plain copy print ?

List<User> selectUserByProvinceAndCity(@Param("provinceId") Integer provinceId, @Param("cityId") Integer cityId,
@Param("pageIndex") Integer pageIndex,@Param("pageSize") Integer pageSize);

mapper文件：

[html] view plain copy print ?

<select id="selectUserByProvinceAndCity" resultMap="BaseResultMap">
SELECT *,
(SELECT COUNT(*) FROM user_user_t
province_id=#{provinceId}
AND
city_id=#{cityId}) AS userCount
FROM user_user_t
province_id=#{provinceId}
AND
city_id=#{cityId}
LIMIT #{pageIndex},#{pageSize}
</select>

User实体

[java] view plain copy print ?

public class User {
private Integer userId;
private String userName;
private Integer provinceId;
private Integer cityId;
private Integer userCount;//满足查询条件的用户数目，作为分页的依据
}

《转：http://blog.csdn.net/gisredevelopment/article/details/39084945》

原文地址：https://www.cnblogs.com/xiadongqing

springMVC+ajax分页查询

相关推荐