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目录：

（1）部门管理：查询-添加-删除

（2）部门管理：修改

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（1）部门管理：查询-添加-删除

在DepartmentController中添加方法：

这里getAllDeps方法上篇已写 

//获取所有部门请求，并跳转到部门页面
    @RequestMapping("/departments")
    public String departments(Model model){
        model.addAttribute("deps",departmentService.getAllDeps());
        return "departments";
    }

 删除固定的内容：

 给添加部门form表单添加action：

在DepartmetntController中提那家这个接口：

/**
     * 增加部门
     *
     * @param departmentname 部门名称
     * @return 重定向到获取所有部门的页面
     */
    @PostMapping("/addDepartments")
    public String addDepartments(String departmentname,Model model){
        Department depByName = departmentService.getDepByName(departmentname);//根据名字查询部门
        if (depByName != null){
            model.addAttribute("error","部门名字重复");
        }else {
            departmentService.addDepartments(departmentname);
            model.addAttribute("error","部门添加成功！！");

        }
        return "redirect:/admin/departments";
    }

 在DepartmentService：添加这个方法：

 //根据名字查询部门
    public Department getDepByName(String departmentname) {
        return departmentMapper.getDepByName(departmentname);
    }

 //增加部门
    public Integer addDepartments(String departmentname) {
        return departmentMapper.addDepartments(departmentname);
    }

 在添加这个方法：

 DepartmentMapper：添加最后两个方法

//根据名字查询部门
    Department getDepByName(String departmentname);

 //增加部门
    Integer addDepartments(String departmentname);

DepartmentMapper.xml写两个sql语句：

 <!--根据名字查询部门-->
    <select id="getDepByName" resultType="com.xzb.meeting.model.Department">
        select *
        from department
        where departmentname = #{departmentName}
    </select>

<!--增加部门-->
    <insert id="addDepartments">
        insert into department(departmentname)
        values (#{departmentName})
    </insert>

给删除按钮添加：删除请求

 在DepartmentController添加删除请求：

 /**
     * 根据id删除部门
     *
     * @param departmentid 部门编号
     * @return Integer
     */
    @RequestMapping("/deletedep")
    public String deletedep(Integer departmentid){
        departmentService.deletedepById(departmentid);
        return "redirect:/admin/departments";
    }

 在DepartmentService添加删除方法：

 //根据id删除部门
    public Integer deletedepById(Integer departmentid) {
        return departmentMapper.deletedepById(departmentid);
    }

 在DepartmentMapper添加：

//根据id删除部门
    Integer deletedepById(Integer departmentid);

 DepartmentMapper.xml添加sql语句：

 <!--根据id删除部门-->
    <delete id="deletedepById">
        delete
        from department
        where departmentid = #{departmentId}
    </delete>

点击222删除 

 （2）部门管理：修改

修改部门页面：添加id onclick

<tr>
                        <td>${dep.departmentId}</td>
                        <td id="depname${dep.departmentId}">${dep.departmentName}</td>
                        <td>
                            <a class="clickbutton" href="#" id="edit${dep.departmentId}" onclick="editDep(${dep.departmentId})">编辑</a>
                            <a class="clickbutton" style="display: none" href="#" id="cancel${dep.departmentId}" onclick="cancelDep(${dep.departmentId})">取消</a>
                            <a class="clickbutton" href="/admin/deletedep?departmentid=${dep.departmentId}">删除</a>
                        </td>
                    </tr>

添加js：

<script>
        //定义变量
        var depname;
        //编辑的方法
        function editDep(depid) {
            var editBtn = $('#edit'+depid);//编辑
            var cancelBtn = $('#cancel'+depid);//取消
            var ele = $('#depname' + depid);//行的id
            depname = ele.html();
            if (cancelBtn.css('display') == 'none'){
                cancelBtn.css('display','inline');
                editBtn.html('确定');//点击编辑按钮按后，编辑按钮变为确定
                var depName = ele.text();//获取到里面的内容
                //ele变为输入框
                ele.html('<input type="text" value="'+depName+'"/>')
            }else {
                var children = ele.children('input');//获取input的元素
                var val = children.val();//获取输入的值
                $.post('/admin/updatedep',{id:depid,name:val},function (msg) {
                    if (msg == 'success'){
                        cancelBtn.css('display','none');//隐藏取消按钮
                        editBtn.html('编辑');
                        ele.html(val);
                    }
                })
            }
        }

        //取消的方法
        function cancelDep(depid) {
            var editBtn = $('#edit' + depid);
            var cancelBtn = $('#cancel' + depid);
            var ele = $('#depname' + depid);
            cancelBtn.css('display','none');//点击取消取消按钮display属性为none
            editBtn.html('编辑');//恢复称编辑
            ele.html(depname);
        }
    </script>

更新请求：在DepartmentControlle添加更新请求

/**
     * 更新部门
     *
     * @param id   部门编号
     * @param name 部门名称
     * @return success或者error给前端ajax
     */
    @RequestMapping("/updatedep")
    @ResponseBody
    public String updatedep(Integer id,String name){
        Integer result = departmentService.updatedep(id,name);
        if (result == 1){
            return "success";
        }
        return "error";
    }

在DepartmentService添加方法：

 //更新部门
    public Integer updatedep(Integer id, String name) {
        return departmentMapper.updatedep(id,name);
    }

 在DepartmentMapper添加更新方法：

//更新部门
    Integer updatedep(@Param("id") Integer id,@Param("name") String name);

DepartmentMapper.xml添加sql语句：

 <!--更新部门-->
    <update id="updatedep">
        update department
        set departmentname = #{name}
        where departmentid = #{id}
    </update>