layui是现在比较火的一个前端设计框架，下面介绍一下它的数据分页及其与java后台的交互。
一、返回的Json格式
按照layui官网给的示例，自己封装了工具类
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(); } public int getCode() { return code; } public void setCode(int code) { this.code = code; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public int getCount() { return count; } public void setCount(int count) { this.count = count; } public List<T> getData() { return data; } public void setData(List<T> data) { this.data = data; } }
二、前台代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="../../tools/layui/css/layui.css" media="all">
<title>社区用户管理</title>
</head>
<body>
<!--社区用户数据分页显示-->
<div style=" 95%;margin: 0 auto;">
<table class="layui-hide" id="user_info_manager" lay-filter="user_info_manager_filter"></table>
</div>
<!--状态展示 -->
<script type="text/html" id="status">
{{# if(d.isLocked == 1){ }}
<i class="layui-icon" style="color: #1E9FFF;">စ正常</i>
{{# } }}
{{# if(d.isLocked == 0){ }}
<i class="layui-icon">�待激活</i>
{{# } }}
{{# if(d.isLocked == 2) { }}
<i class="layui-icon">ဆ锁定</i>
{{# } }}
</script>
<!--时间格式修改 -->
<script id="createTime" type="text/html">
{{timestampToTime(d.createTime)}}
</script>
<script id="updateTime" type="text/html">
{{timestampToTime(d.updateTime)}}
</script>
<!--操作-->
<script type="text/html" id="barDemo">
{{# if(d.isLocked == 0){ }}
<a class="layui-btn layui-btn-disabled layui-btn-xs" lay-event="user_unlock">不可操作</a>
{{# } }}
{{# if(d.isLocked == 1){ }}
<a class="layui-btn layui-btn-danger layui-btn-xs" lay-event="user_lock">锁定</a>
{{# } }}
{{# if(d.isLocked == 2){ }}
<a class="layui-btn layui-btn-normal layui-btn-xs" lay-event="user_unlock">已锁定</a>
{{# } }}
</script>
<!--引入的js -->
<script type="text/javascript" src="../../tools/layui/layui.js"></script>
<script type="text/javascript" src="../../tools/bootstrap/js/jquery-2.1.0.js" ></script>
<script type="text/javascript" src="../../js/web/user_info_manage.js"></script>
</body>
</html>
$(function() { /*社区用户数据分页显示*/ layui.use('table', function() { var table = layui.table; table.render({ elem: '#user_info_manager', height: 'full-50', url: 'http://localhost:9901/user/getAllUserInfo', page: true , loading: true, text: { none: '暂无相关数据' }, cellMinWidth: 80, cols: [ [{ field: 'username', '10%', title: '用户名', sort: true }, { field: 'nickname', '10%', title: '昵称', sort: true }, { field: 'email', '13%', title: '邮箱' }, { field: 'phone', '12%', title: '电话' }, { field: 'address', '10%', title: '地址', minWidth: 100 }, { field: 'createTime', '13%', title: '创建时间', templet: '#createTime' }, { field: 'updateTime', '13%', title: '更新时间', templet: '#updateTime' }, { field: 'isLocked', '10%', title: '当前状态', templet: '#status' }, { fixed: 'right', '9%', align: 'center', title: '操作', toolbar: '#barDemo' }] ], request: { pageName: 'page', limitName: 'size' }, limit: 10, limits: [10, 20, 30, 40, 50] }); //监听工具条 table.on('tool(user_info_manager_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" //获得当前行数据 var data = obj.data; layEvent = obj.event; //获得 lay-event 对应的值 if(layEvent === 'user_lock') { //锁定用户 layer.confirm('您确定要锁定此用户吗？', {icon: 3, title:'锁定用户'}, function(index){ $.get("http://localhost:9901/user/lockUser/2/" + data.username, function(result) { if(result.status == 200) { layer.msg('已锁定', { icon: 1, time: 2000 }, function(){ window.location.reload() }); } else { layer.msg(result.msg, { icon: 2, time: 2000 }, function(){ window.location.reload() }); } }) }); } else if(layEvent === 'user_unlock') { //解锁用户 layer.confirm('您确定要解锁此用户吗？', {icon: 3, title:'解锁用户'}, function(index){ $.get("http://localhost:9901/user/lockUser/1/" + data.username, function(result) { if(result.status == 200) { layer.msg('已解锁', { icon: 1, time: 2000 }, function(){ window.location.reload() }); } else { layer.msg(result.msg, { icon: 2, time: 2000 }, function(){ window.location.reload() }); } }) }); } }); }); }); <!--时间格式化--> function timestampToTime(timestamp) { var date = new Date(timestamp);//时间戳为10位需*1000，时间戳为13位的话不需乘1000 Y = date.getFullYear() + '-'; M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-'; D = date.getDate() + ' '; h = date.getHours() + ':'; m = date.getMinutes() + ':'; s = date.getSeconds(); return Y+M+D+h+m+s; }
在js的table.render中，cols的field字段对应后台po的属性，template链接到html中的的script标签，用于格式化一些数据，或者按照自己的意愿显示。
三、po类
package com.jingling.basic.po; import java.io.Serializable; import java.sql.Timestamp; /** * @Source: JDK 1.8 * @Author: Zhao * @Since: version 1.0 **/ public class User implements Serializable { private Integer id; private String username; private String nickname; private String password; private String openid; private String unionid; private String email; private String phone; private String address; private String salt; private String validateCode; private String isLocked; private Timestamp createTime; private Timestamp updateTime; public User() { } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getNickname() { return nickname; } public void setNickname(String nickname) { this.nickname = nickname; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getOpenid() { return openid; } public void setOpenid(String openid) { this.openid = openid; } public String getUnionid() { return unionid; } public void setUnionid(String unionid) { this.unionid = unionid; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getSalt() { return salt; } public void setSalt(String salt) { this.salt = salt; } public String getValidateCode() { return validateCode; } public void setValidateCode(String validateCode) { this.validateCode = validateCode; } public String getIsLocked() { return isLocked; } public void setIsLocked(String isLocked) { this.isLocked = isLocked; } public Timestamp getCreateTime() { return createTime; } public void setCreateTime(Timestamp createTime) { this.createTime = createTime; } public Timestamp getUpdateTime() { return updateTime; } public void setUpdateTime(Timestamp updateTime) { this.updateTime = updateTime; } }
四、controller代码
@GetMapping("/getAllUserInfo")
public Object getAllUserInfo(@RequestParam("page") Integer page, @RequestParam("size") Integer size) {
int count = userService.getUserCount();
List<User> userList = userService.getAllUserInfo(page, size);
return new LayuiReplay<User>(0, "OK", count, userList);
}
layui要求，不仅传入数据，还得传入数据的总数，这样就可以使用其自带的分页效果。
五、小结
layui的交互其实并不难，很多人觉得layui的官方文档写的不好，因为好多东西拿过来不能直接使用，但其实他官网上好多示例都需要请求到数据才能执行。