尚筹网项目第四天 2020-04-04 09:49:55

给你一囗甜甜゛ 提交于 2020-04-07 01:38:31

本笔记大多来源于尚硅谷【封捷老师讲的尚筹网项目】

视频地址:

尚硅谷尚筹网项目视频教程
下载链接:https://pan.baidu.com/s/1WOLG7b4yHkQfSMu3fMsOBA
提取码:s5gw

目标:实现对角色的增、删、改、查【基于ajax{地址栏不变}】

1、角色分页

1.1目标

将角色信息分页显示

1.2思路

1.3代码

 创建页面role-page.jsp

<%--
  Created by IntelliJ IDEA.
  User: 25017
  Date: 2020/4/6
  Time: 13:46
  To change this template use File | Settings | File Templates.
--%>
<%--
  Created by IntelliJ IDEA.
  User: 25017
  Date: 2020/3/23
  Time: 12:44
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<!DOCTYPE html>
<html lang="UTF-8">
<%@include file="/WEB-INF/include-head.jsp" %>

<body>

<%@include file="/WEB-INF/include-nav.jsp" %>
<div class="container-fluid">
    <div class="row">
        <%@include file="/WEB-INF/include-sidebar.jsp" %>
        <div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
            <div class="panel panel-default">
                <div class="panel-heading">
                    <h3 class="panel-title"><i class="glyphicon glyphicon-th"></i> 数据列表</h3>
                </div>
                <div class="panel-body">
                    <form class="form-inline" role="form" style="float:left;">
                        <div class="form-group has-feedback">
                            <div class="input-group">
                                <div class="input-group-addon">查询条件</div>
                                <input class="form-control has-success" type="text" placeholder="请输入查询条件">
                            </div>
                        </div>
                        <button type="button" class="btn btn-warning"><i class="glyphicon glyphicon-search"></i> 查询</button>
                    </form>
                    <button type="button" class="btn btn-danger" style="float:right;margin-left:10px;"><i class=" glyphicon glyphicon-remove"></i> 删除</button>
                    <button type="button" class="btn btn-primary" style="float:right;" onclick="window.location.href='form.html'"><i class="glyphicon glyphicon-plus"></i> 新增</button>
                    <br>
                    <hr style="clear:both;">
                    <div class="table-responsive">
                        <table class="table  table-bordered">
                            <thead>
                            <tr>
                                <th width="30">#</th>
                                <th width="30"><input type="checkbox"></th>
                                <th>名称</th>
                                <th width="100">操作</th>
                            </tr>
                            </thead>
                            <tbody>
                            <tr>
                                <td>1</td>
                                <td><input type="checkbox"></td>
                                <td>PM - 项目经理</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>2</td>
                                <td><input type="checkbox"></td>
                                <td>SE - 软件工程师</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>3</td>
                                <td><input type="checkbox"></td>
                                <td>PG - 程序员</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>4</td>
                                <td><input type="checkbox"></td>
                                <td>TL - 组长</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>5</td>
                                <td><input type="checkbox"></td>
                                <td>GL - 组长</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>6</td>
                                <td><input type="checkbox"></td>
                                <td>QA - 品质保证</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>7</td>
                                <td><input type="checkbox"></td>
                                <td>QC - 品质控制</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>8</td>
                                <td><input type="checkbox"></td>
                                <td>SA - 软件架构师</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            <tr>
                                <td>8</td>
                                <td><input type="checkbox"></td>
                                <td>CMO / CMS - 配置管理员</td>
                                <td>
                                    <button type="button" class="btn btn-success btn-xs"><i class=" glyphicon glyphicon-check"></i></button>
                                    <button type="button" class="btn btn-primary btn-xs"><i class=" glyphicon glyphicon-pencil"></i></button>
                                    <button type="button" class="btn btn-danger btn-xs"><i class=" glyphicon glyphicon-remove"></i></button>
                                </td>
                            </tr>
                            </tbody>
                            <tfoot>
                            <tr>
                                <td colspan="6" align="center">
                                    <ul class="pagination">
                                        <li class="disabled"><a href="#">上一页</a></li>
                                        <li class="active"><a href="#">1 <span class="sr-only">(current)</span></a></li>
                                        <li><a href="#">2</a></li>
                                        <li><a href="#">3</a></li>
                                        <li><a href="#">4</a></li>
                                        <li><a href="#">5</a></li>
                                        <li><a href="#">下一页</a></li>
                                    </ul>
                                </td>
                            </tr>

                            </tfoot>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

</body>
</html>

由于去往角色页面不需要携带其他参数,直接使用view-controller跳转

<mvc:view-controller path="/role/to/page.html" view-name="role-page"/>

include-sidebar.jsp页面修改:

<a href="role/to/page.html"><i class="glyphicon glyphicon-king"></i> 角色维护</a>

后端代码【和查询管理员类似】:

mapper.xml:

<select id="selectRoleByKeyword" resultMap="BaseResultMap">
    select
      id, name
    from
    t_role
    where
    name like concat("%",#{keyword},"%")
  </select>

接口:

/**
     * 查询角色数据
     * @param keywords
     * @return
     */
    List<Role> selectRoleByKeyword(String keywords);

service实现:

package com.atguigu.crowd.service.impl;

import com.atguigu.crowd.entity.Role;
import com.atguigu.crowd.mapper.RoleMapper;
import com.atguigu.crowd.service.api.RoleService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class RoleServiceImpl implements RoleService {

    @Autowired
    private RoleMapper roleMapper;

    /**
     * 查询角色的分页数据
     * @param pageNum 当前页号
     * @param pageSize 每页的条数
     * @param keyword 关键字模糊匹配
     * @return
     */
    @Override
    public PageInfo<Role> getPageInfo(Integer pageNum, Integer pageSize, String keyword) {
        // 开启分页
        PageHelper.startPage(pageNum,pageSize);

        // 执行查询
        List<Role> roles = roleMapper.selectRoleByKeyword(keyword);

        // 返回数据
        return new PageInfo<>(roles);
    }
}

handler:

package com.atguigu.crowd.mvc.handler;

import com.atguigu.crowd.entity.Role;
import com.atguigu.crowd.service.api.RoleService;
import com.atguigu.crowd.util.ResultEntity;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class RoleHandler {

    @Autowired
    private RoleService roleService;

    @ResponseBody
    @RequestMapping("/role/get/page/info.json")
    public ResultEntity<PageInfo<Role>> getPageInfo(
            @RequestParam(value="pageNum", defaultValue="1") Integer pageNum,
            @RequestParam(value="pageSize", defaultValue="5") Integer pageSize,
            @RequestParam(value="keyword", defaultValue="") String keyword) {
        // 调用 Service 方法获取分页数据
        PageInfo<Role> pageInfo = roleService.getPageInfo(pageNum, pageSize, keyword);
        // 封装到 ResultEntity 对象中返回(如果上面的操作抛出异常,交给异常映射机制处理)
        return ResultEntity.successWithData(pageInfo);
    }

}

页面:

<link rel="stylesheet" href="css/pagination.css">
<script type="text/javascript" src="jquery/jquery.pagination.js"></script>
<script type="text/javascript" src="crowd/my-role.js"></script>

外部my-role.js文件:

/*
本js文件是用于实现角色的分页
 */
$(function(){
    // 1.为分页操作准备初始化数据
    window.pageNum = 1;
    window.pageSize = 5;
    window.keyword = "";
    // 2.调用执行分页的函数,显示分页效果
    generatePage();
});

// 执行分页,生成页面效果,任何时候调用这个函数都会重新加载页面
function generatePage() {
    // 1.获取分页数据
    var pageInfo = getPageInfoRemote();
    // 2.填充表格
    fillTableBody(pageInfo);
}

// 远程访问服务器端程序获取 pageInfo 数据
function getPageInfoRemote() {
    // 调用$.ajax()函数发送请求并接受$.ajax()函数的返回值
    var ajaxResult =
        $.ajax({
        "url": "role/get/page/info.json",
        "type":"post",
        "data": {
            "pageNum": window.pageNum,
            "pageSize": window.pageSize,
            "keyword": window.keyword
        },
        "async":false,
        "dataType":"json"
    });
    // console.log(ajaxResult);
    // 判断当前响应状态码是否为 200
    var statusCode = ajaxResult.status;
    // 如果当前响应状态码不是 200,说明发生了错误或其他意外情况,显示提示消息,让 当前函数停止执行
    if(statusCode != 200) {
        layer.msg("失败!响应状态码="+statusCode+" 说明信息="+ajaxResult.statusText);
        return null;
    }
    // 如果响应状态码是 200,说明请求处理成功,获取 pageInfo
    var resultEntity = ajaxResult.responseJSON;
    // 从 resultEntity 中获取 result 属性
    var result = resultEntity.result;
    // 判断 result 是否成功
    if(result == "FAILED") {
        layer.msg(resultEntity.message);
        return null;
    }
    // 确认 result 为成功后获取 pageInfo
    var pageInfo = resultEntity.data;
    // 返回 pageInfo
    return pageInfo;
}

// 填充表格
function fillTableBody(pageInfo) {
    // 清除 tbody 中的旧的内容
    $("#rolePageBody").empty();
    // 这里清空是为了让没有搜索结果时不显示页码导航条
    $("#Pagination").empty();
    // 判断 pageInfo 对象是否有效
    if(pageInfo == null || pageInfo == undefined
        || pageInfo.list == null || pageInfo.list.length == 0) {
        $("#rolePageBody").append("<tr><td colspan='4' align='center'>抱歉!没有查询到您搜索的数据!</td></tr>");
        return ;
    }
    // 使用 pageInfo 的 list 属性填充 tbody
    for(var i = 0; i < pageInfo.list.length; i++) {
        var role = pageInfo.list[i];
        var roleId = role.id;
        var roleName = role.name;
        var numberTd = "<td>"+(i+1)+"</td>";
        var checkboxTd = "<td><input type='checkbox'></td>";
        var roleNameTd = "<td>"+roleName+"</td>";
        var checkBtn = "<button type='button' class='btn btn-success btn-xs'><i class=' glyphicon glyphicon-check'></i></button>";
        var pencilBtn = "<button type='button' class='btn btn-primary btn-xs'><i class=' glyphicon glyphicon-pencil'></i></button>";
        var removeBtn = "<button type='button' class='btn btn-danger btn-xs'><i class=' glyphicon glyphicon-remove'></i></button>";
        var buttonTd = "<td>"+checkBtn+" "+pencilBtn+" "+removeBtn+"</td>";
        var tr = "<tr>"+numberTd+checkboxTd+roleNameTd+buttonTd+"</tr>";
        $("#rolePageBody").append(tr);
    }
    // 生成分页导航条
    generateNavigator(pageInfo);
}

// 生成分页页码导航条
function generateNavigator(pageInfo) {
    // 获取总记录数
    var totalRecord = pageInfo.total;
    // 声明相关属性
    var properties = {
        "num_edge_entries": 3,
        "num_display_entries": 5,
        "callback": paginationCallBack,
        "items_per_page": pageInfo.pageSize,
        "current_page": pageInfo.pageNum - 1,
        "prev_text": "上一页",
        "next_text": "下一页"
    }
    // 调用 pagination()函数
    $("#Pagination").pagination(totalRecord, properties);
}

// 翻页时的回调函数
function paginationCallBack(pageIndex, jQuery) {
    // 修改 window 对象的 pageNum 属性
    window.pageNum = pageIndex + 1;
    // 调用分页函数
    generatePage();
    // 取消页码超链接的默认行为
    return false;
}

关键字查询:

页面:

<input id="keywordInput" class="form-control has-success" type="text" placeholder="请输入查询条件">

<button id="searchBtn" type="button" class="btn btn-warning"><i class="glyphicon glyphicon-search"></i> 查询</button>

js代码【注意:需要将其放入文档就绪函数中】:

<script type="text/javascript">

    $(function(){
        // 关键字查询功能
        $("#searchBtn").click(function(){
            // ①获取关键词数据赋值给对应的全局变量
            window.keyword = $("#keywordInput").val();        window.pageNum = 1;
            // ②调用分页函数刷新页面
            generatePage();
        });
    });


</script>

2、角色新增

目标:

通过在打开的模态框中输入角色名称,执行对新角色的保存。

思路:

 代码:

前端页面:

role-add-modal.jsp

<%--
  Created by IntelliJ IDEA.
  User: 25017
  Date: 2020/4/6
  Time: 22:52
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<div id="addModal" class="modal fade" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
                <h4 class="modal-title">尚筹网系统弹窗</h4>
            </div>
            <div class="modal-body">
                <form class="form-signin" role="form">
                    <div class="form-group has-success has-feedback">
                        <inputtype="text" name="roleName" class="form-control" id="inputSuccess4" placeholder="请输入 角色名称" autofocus>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button id="saveRoleBtn" type="button" class="btn btn-primary"> 保 存 </button>
            </div>
        </div>
    </div>
</div>

role-page页面修改:

新增按钮添加id属性:
<button id="showAddModalBtn" type="button" class="btn btn-primary" style="float:right;"><i class="glyphicon glyphicon-plus"></i> 新增</button>

引入添加模态框:
<%@include file="/WEB-INF/role-add-modal.jsp" %>

js代码:

// 4.点击新增按钮打开模态框
        $("#showAddModalBtn").click(function(){
            $("#addModal").modal("show");
        });

        // 5.给新增模态框中的保存按钮绑定单击响应函数
        $("#saveRoleBtn").click(function(){
            // ①获取用户在文本框中输入的角色名称
            // #addModal 表示找到整个模态框
            // 空格表示在后代元素中继续查找
            // [name=roleName]表示匹配 name 属性等于 roleName 的元素
            var roleName = $.trim($("#addModal [name=roleName]").val());
            // ②发送 Ajax 请求
            $.ajax({
                "url": "role/save.json",
                "type":"post",
                "data": {
                    "name": roleName
                },
                "dataType": "json",
                "success":function(response){
                    var result = response.result;
                    if(result == "SUCCESS") {
                        layer.msg("操作成功!");
                        // 将页码定位到最后一页
                        window.pageNum = 99999999;
                        window.keyword = roleName;
                        // 重新加载分页数据
                        generatePage();
                    }
                    if(result == "FAILED") {
                        layer.msg("操作失败!"+response.message);
                    }
                },
                "error":function(response){
                    layer.msg(response.status+" "+response.statusText);
                }
            });
            // 关闭模态框
            $("#addModal").modal("hide");
            // 清理模态框
            $("#addModal [name=roleName]").val("");
        });

后端代码:

handler:

@ResponseBody
    @RequestMapping("/role/save.json")
    public ResultEntity<String> saveRole(Role role) {
        roleService.saveRole(role);
        return ResultEntity.successWithoutData();
    }

service实现:

@Override
    public void saveRole(Role role) {
        roleMapper.insert(role);
    }

3、角色更新

目标:

修改角色信息。

思路:

代码:

页面:

role-edit-modal.jsp

<%--
  Created by IntelliJ IDEA.
  User: 25017
  Date: 2020/4/6
  Time: 22:52
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<div id="addModal" class="modal fade" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
                <h4 class="modal-title">尚筹网系统弹窗</h4>
            </div>
            <div class="modal-body">
                <form class="form-signin" role="form">
                    <div class="form-group has-success has-feedback">
                        <input type="text" name="roleName" class="form-control" id="inputSuccess4" placeholder="请输入 角色名称" autofocus>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button id="saveRoleBtn" type="button" class="btn btn-primary"> 保 存 </button>
            </div>
        </div>
    </div>
</div>

role-page修改:

引入修改模态框
<%@include file="/WEB-INF/role-edit-modal.jsp" %>

my-role.js修改:

原来:
var pencilBtn = "<button type='button' class='btn btn-primary btn-xs'><i class=' glyphicon glyphicon-pencil'></i></button>";
现在:
// 通过 button 标签的 id 属性(别的属性其实也可以)把 roleId 值传递到 button 按钮的单击 响应函数中,
        // 在单击响应函数中使用 this.id
        var pencilBtn = "<button id='"+roleId+"' type='button' class='btn btn-primary btn-xs pencilBtn'><i class=' glyphicon glyphicon-pencil'></i></button>";

js:

// 6.给页面上的“铅笔”按钮绑定单击响应函数,目的是打开模态框
        // 传统的事件绑定方式只能在第一个页面有效,翻页后失效了
        // $(".pencilBtn").click(function(){
        //      alert("aaaa...");
        // });
        // 使用 jQuery 对象的 on()函数可以解决上面问题
        // ①首先找到所有“动态生成”的元素所附着的“静态”元素
        // ②on()函数的第一个参数是事件类型
        // ③on()函数的第二个参数是找到真正要绑定事件的元素的选择器
        // ③on()函数的第三个参数是事件的响应函数
        $("#rolePageBody").on("click",".pencilBtn",function(){
            // 打开模态框
            $("#editModal").modal("show");
            // 获取表格中当前行中的角色名称
            var roleName = $(this).parent().prev().text();
            // 获取当前角色的 id
            // 依据是:var pencilBtn = "<button id='"+roleId+"' ……这段代码中我们把 roleId 设置到 id 属性了
            // 为了让执行更新的按钮能够获取到 roleId 的值,把它放在全局变量上
            window.roleId = this.id;
            // 使用 roleName 的值设置模态框中的文本框
            $("#editModal [name=roleName]").val(roleName);
        });

        // 7.给更新模态框中的更新按钮绑定单击响应函数
        $("#updateRoleBtn").click(function(){
            // ①从文本框中获取新的角色名称
            var roleName = $("#editModal [name=roleName]").val();
            // ②发送 Ajax 请求执行更新
            $.ajax({
                "url":"role/update.json",
                "type":"post",
                "data":{
                    "id":window.roleId,
                    "name":roleName
                },
                "dataType":"json",
                "success":function(response){
                    var result = response.result;
                    if(result == "SUCCESS") {
                        layer.msg("操作成功!");
                        // 重新加载分页数据
                        generatePage();
                    }
                    if(result == "FAILED") {
                        layer.msg("操作失败!"+response.message);
                    }
                },
                "error":function(response){
                    layer.msg(response.status+" "+response.statusText);
                }
            });
            // ③关闭模态框
            $("#editModal").modal("hide");
        });

后端代码:

handler:

@ResponseBody
    @RequestMapping("/role/update.json")
    public ResultEntity<String> updateRole(Role role) {
        roleService.updateRole(role);
        return ResultEntity.successWithoutData();
    }

service实现:

@Override
    public void updateRole(Role role) {
        roleMapper.updateByPrimaryKey(role);
    }

4、角色删除【包括批量删除和单条删除】

 目标:

前端的“单条删除”和“批量删除”在后端合并为同一套操作。合并的依据是:单条删除时 id 也放在数组中,后端完全根据 id 的数组进行删除。

思路:

代码:

页面:

role-confirm-modal.jsp

<%--
  Created by IntelliJ IDEA.
  User: 25017
  Date: 2020/4/6
  Time: 23:44
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<div id="confirmModal" class="modal fade" tabindex="-1" role="dialog">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal"
                        aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
                <h4 class="modal-title">尚筹网系统弹窗</h4>
            </div>
            <div class="modal-body">
                <h4>请确认是否要删除下列角色:</h4>
                <div id="roleNameDiv" style="text-align: center;"></div>
            </div>
            <div class="modal-footer">
                <button id="removeRoleBtn" type="button" class="btn btn-primary">确认删除</button>
            </div>
        </div>
    </div>
</div>

role-page:

引入模态框:
<%@include file="/WEB-INF/role-confirm-modal.jsp" %>
删除按钮修改:
<button id="batchRemoveBtn" type="button" class="btn btn-danger"
                            style="float: right; margin-left: 10px;">
                        <i class=" glyphicon glyphicon-remove"></i> 删除
                    </button>
全选按钮修改:
<th width="30">#</th>
                                <th width="30"><input id="summaryBox" type="checkbox"></th>
                                <th>名称</th>
                                <th width="100">操作</th>

my-role.js:

多选时获取roleId:
var checkboxTd = "<td><input class='itemBox' id='"+roleId+"' type='checkbox'></td>";
单选时获取roleId
var removeBtn = "<button id='"+roleId+"' type='button' class='btn btn-danger btn-xs removeBtn'><i class=' glyphicon glyphicon-remove'></i></button>";

js:

// 声明专门的函数显示确认模态框
function showConfirmModal(roleArray) {

    // 打开模态框
    $("#confirmModal").modal("show");

    // 清除旧的数据
    $("#roleNameDiv").empty();

    // 在全局变量范围创建数组用来存放角色id
    window.roleIdArray = [];

    // 遍历roleArray数组
    for(var i = 0; i < roleArray.length; i++) {
        var role = roleArray[i];
        var roleName = role.roleName;
        $("#roleNameDiv").append(roleName+"<br/>");

        var roleId = role.roleId;

        // 调用数组对象的push()方法存入新元素
        window.roleIdArray.push(roleId);
    }

}

// 8.点击确认模态框中的确认删除按钮执行删除
        $("#removeRoleBtn").click(function(){

            // 从全局变量范围获取roleIdArray,转换为JSON字符串
            var requestBody = JSON.stringify(window.roleIdArray);

            $.ajax({
                "url":"role/remove/by/role/id/array.json",
                "type":"post",
                "data":requestBody,
                "contentType":"application/json;charset=UTF-8",
                "dataType":"json",
                "success":function(response){

                    var result = response.result;

                    if(result == "SUCCESS") {
                        layer.msg("操作成功!");

                        // 重新加载分页数据
                        generatePage();
                    }

                    if(result == "FAILED") {
                        layer.msg("操作失败!"+response.message);
                    }

                },
                "error":function(response){
                    layer.msg(response.status+" "+response.statusText);
                }
            });

            // 关闭模态框
            $("#confirmModal").modal("hide");

        });

        // 9.给单条删除按钮绑定单击响应函数
        $("#rolePageBody").on("click",".removeBtn",function(){

            // 从当前按钮出发获取角色名称
            var roleName = $(this).parent().prev().text();

            // 创建role对象存入数组
            var roleArray = [{
                "roleId":this.id,
                "roleName":roleName
            }];

            // 调用专门的函数打开模态框
            showConfirmModal(roleArray);

        });

        // 10.给总的checkbox绑定单击响应函数
        $("#summaryBox").click(function(){

            // ①获取当前多选框自身的状态
            var currentStatus = this.checked;

            // ②用当前多选框的状态设置其他多选框
            $(".itemBox").prop("checked", currentStatus);

        });

        // 11.全选、全不选的反向操作
        $("#rolePageBody").on("click",".itemBox",function(){

            // 获取当前已经选中的.itemBox的数量
            var checkedBoxCount = $(".itemBox:checked").length;

            // 获取全部.itemBox的数量
            var totalBoxCount = $(".itemBox").length;

            // 使用二者的比较结果设置总的checkbox
            $("#summaryBox").prop("checked", checkedBoxCount == totalBoxCount);

        });

        // 12.给批量删除的按钮绑定单击响应函数
        $("#batchRemoveBtn").click(function(){

            // 创建一个数组对象用来存放后面获取到的角色对象
            var roleArray = [];

            // 遍历当前选中的多选框
            $(".itemBox:checked").each(function(){

                // 使用this引用当前遍历得到的多选框
                var roleId = this.id;

                // 通过DOM操作获取角色名称
                var roleName = $(this).parent().next().text();

                roleArray.push({
                    "roleId":roleId,
                    "roleName":roleName
                });
            });

            // 检查roleArray的长度是否为0
            if(roleArray.length == 0) {
                layer.msg("请至少选择一个执行删除");
                return ;
            }

            // 调用专门的函数打开模态框
            showConfirmModal(roleArray);
        });

分页时将全选按钮默认不勾选:
$("#summaryBox").prop("checked", false);

后端:

handler:

@ResponseBody
    @RequestMapping("/role/remove/by/role/id/array.json")
    public ResultEntity<String> removeByRoleIdAarry(
            @RequestBody List<Integer> roleIdList) {

        roleService.removeRole(roleIdList);

        return ResultEntity.successWithoutData();
    }

service实现:

@Override
    public void removeRole(List<Integer> roleIdList) {
        RoleExample example = new RoleExample();

        RoleExample.Criteria criteria = example.createCriteria();

        //delete from t_role where id in (5,8,12)
        criteria.andIdIn(roleIdList);

        roleMapper.deleteByExample(example);
    }

 

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