采用layui前台框架实现前后台交互，数据分页显示以及删除操作，具体方式如下：
一、数据分页显示
1.前端
（1）html页面
<!--轮播数据分页显示--> <table class="layui-hide" id="content_lbt" lay-filter="content_lbt_filter"></table>
（2）请求渲染数据
$(function() {
/*轮播数据分页显示*/
layui.use(['table', 'update'], function() {
var table = layui.table,
upload = layui.upload;
table.render({
elem: '#content_lbt',
height: 500
//,url: 'data/content_lbt.json' //数据接口
,
url: 'http://localhost:9911/cms/queryCarouselList' //数据接口
,
page: true //开启分页
,
loading: true,//分页查询是否显示等待图标
text: {//若查询记录为空，执行此操作
none: '暂无相关数据'
} //默认：无数据。注：该属性为 layui 2.2.5 开始新增
,
cellMinWidth: 80 //全局定义常规单元格的最小宽度，layui 2.2.1 新增
,
cols: [
[{
field: 'id',
width: '10%',
title: 'ID',
sort: true
}, {
field: 'posterId',
width: '10%',
title: '上传者ID',
sort: true
}, {
field: 'posterName',
width: '15%',
title: '上传者姓名'
}, {
field: 'description',
width: '28%',
title: '描述',
minWidth: 200
}, {
field: 'photoPath',
width: '10%',
title: '图片',
minWidth: 100
}, {
field: 'createTime',
width: '10%',
title: '上传时间',
minWidth: 100
}]
],
request: {
pageName: 'page',
limitName: 'size'
},
limit: 10,
limits: [10, 20, 30, 40, 50]
});
});
2.后端
后端采用SpringBoot，利用SSM框架
（1）mapper：（注意@Mapper注解）
/**
* 查询所有轮播图信息
*
* @return
*/
List<Carousel> queryCarousel(@Param("start") Integer start, @Param("size") Integer size);
/**
* 查询轮播记录条数
*
* @return
*/
Integer countCarousel();
注意po类采用驼峰式写法
<select id="queryCarousel" resultType="com.jingling.basic.po.Carousel">
SELECT id, poster_id AS posterId, poster_name AS posterName, description AS description , photo_path AS photoPath, create_time AS createTime
FROM carousel
LIMIT #{start}, #{size}
</select>
<select id="countCarousel" resultType="int">
SELECT COUNT(*) FROM carousel
</select>
（2）service
/** * 查询全部轮播信息 * * @return */ List<Carousel> queryCarousel(Integer page,Integer size); /** * 查询轮播记录条数 * * @return */ Integer countCarousel();
（3）serviceImpl（注意要有@Service注解）
@Autowired
private CarouselMapper carouselMapper;
@Override
public List<Carousel> queryCarousel(Integer page,Integer size) {
if(page == null || page <= 0){
page = 1;
}
if (size == null || size <= 0){
size = 10;
}
Integer start = (page - 1) * size;
return carouselMapper.queryCarousel(start,size);
}
@Override
public Integer countCarousel() {
return carouselMapper.countCarousel();
}
（4）Controller（注意要有@RequestController注解）
@RestController
@RequestMapping("/cms")
@Autowired
public CmsService cmsService;
/**
* 查询轮播图信息
*
* @return
*/
@GetMapping("/queryCarouselList")
public Object queryCarouselList(HttpServletResponse response, @RequestParam("page") Integer page, @RequestParam("size") Integer size){
response.setHeader("Access-Control-Allow-Origin", "*");//解决跨域的问题
List<Carousel> carouselList = cmsService.queryCarousel(page,size);
if (carouselList == null){
return RecycleResult.build(500,"轮播图为空");
}
//return RecycleResult.ok(carouselList);
//return carouselList;
Integer count = cmsService.countCarousel();
return new LayuiReplay<Carousel>(0, "OK", count, carouselList);
}
二、删除操作
1.前端
<script type="text/html" id="barDemo">
<a class="layui-btn layui-btn-xs" lay-event="detail">查看</a>
<!--<a class="layui-btn layui-btn-xs" lay-event="edit">编辑</a>-->
<a class="layui-btn layui-btn-danger layui-btn-xs" lay-event="del">删除</a>
</script>
{
fixed: 'right',
width: '15%',
align: 'center',
title: '操作',
toolbar: '#barDemo'
}
fixed: 'right',
width: '15%',
align: 'center',
title: '操作',
toolbar: '#barDemo'
}
//监听工具条
table.on('tool(content_lbt_filter)', function(obj) { //注：tool是工具条事件名，test是table原始容器的属性 lay-filter="对应的值"
var data = obj.data //获得当前行数据
,
layEvent = obj.event; //获得 lay-event 对应的值
if(layEvent === 'detail') {
layer.msg('查看操作');
} else if(layEvent === 'del') {
layer.confirm('真的删除行么', function(index) {
//obj.del(); //删除对应行（tr）的DOM结构
delCarouselById(data.id);
layer.close(index);
//向服务端发送删除指令
});
}
/*else if(layEvent === 'edit'){
layer.msg('编辑操作');
}*/
});
//删除记录
function delCarouselById(id) {
$.get("http://localhost:9911/cms/delCarouselById?id=" + id,
function(data, status) {
layer.msg('删除成功');
});
}
2.后端（此处仅显示controller层和mapper）
@GetMapping("/delCarouselById")
public RecycleResult delCarouselById(HttpServletResponse response,@RequestParam("id") Integer id){
response.setHeader("Access-Control-Allow-Origin", "*");
cmsService.delCarouselById(id);
return RecycleResult.ok();
}
<delete id="delCarouselById">
DELETE FROM carousel
WHERE id = #{id}
</delete>
补充LayuiReplay类（其中get、set方法省略）
public class LayuiReplay <T> {
private int code;
private String msg;
private int count;
private List<T> data;
public LayuiReplay(int code, String msg, int count, List<T> data) {
this.code = code;
this.msg = msg;
this.count = count;
this.data = data;
}
public String toJson() {
Gson gson = new Gson();
String json = gson.toJson(this);
return json;
}
public static <T> String toJson(int count, List<T> data) {
LayuiReplay<T> replay = new LayuiReplay<>(ReplyCode.OK.getCode(), ReplyCode.OK.getMessage(), count, data);
return replay.toJson();
}
}
补充ReplyCode.java枚举类
public enum ReplyCode {
NOT_LOGIN(-1,"您尚未登录或登录时间过长,请重新登录或刷新页面!"),
OK(0, "OK"),
WRONG_URL(400,"请求路径错误"),
WRONG_ROLE(401, "身份错误"),
REQUEST_FAILED(500, "请求失败，请重试"),
NULL_ATTR(30,"属性不能为空"),
ATTR_WRONG(31, "属性填写错误"),
WRONG_LENGTH(32, "数据长度不符合要求"),
WRONG_PATTERN(33, "数据格式错误"),
VAILD_WRONG(100,"验证码错误"),
CUSTOM(999, "")
;
ReplyCode(int code, String message) {
this.code = code;
this.message = message;
}
private int code;
private String message;
public int getCode() {
return code;
}
public ReplyCode setCode(int code) {
this.code = code;
return this;
}
public String getMessage() {
return message;
}
public ReplyCode setMessage(String message) {
this.message = message;
return this;
}
}
以上这篇layui框架与SSM前后台交互的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。
