CRUD（32）：删除-批量删除

一、给全部删除按钮添加一个id；

<button class="btn btn-danger" id="emp_delete_all_btn">删除</button>

二、把EmployeeController中的删除方法，单个删除批量删除二合一

       // 删除-单个删除/批量删除 二合一

       @RequestMapping(value = "/emp/{empId}", method = RequestMethod.DELETE)

       @ResponseBody

       public Msg deleteEmp(@PathVariable("empId") String ids) {

             if (ids.contains("-")) {

                    List<Integer> del_ids = new ArrayList<>();

                    String[] str_ids = ids.split("-");

                    for(String string:str_ids) {

                           del_ids.add(Integer.parseInt(string));

                    }

                    //组装id的集合

                    employeeService.deleteBatch(del_ids);

             } else {

                    Integer id = Integer.parseInt(ids);

                    employeeService.deleteEmp(id);

             }



             return Msg.success();

       }

三、在EmployeeService中添加批量删除的方法；

       //删除-批量删除员工

       public void deleteBatch(List<Integer> ids) {

             EmployeeExample example = new EmployeeExample();

             Criteria criteria = example.createCriteria();

             criteria.andEmpIdIn(ids);

             employeeMapper.deleteByExample(example);

       }

ps.
在这里我把所有用户名称中的"-"去掉了，看着心烦。

UPDATE `tbl_emp`  
SET emp_name = REPLACE(emp_name,'-','')  
WHERE emp_name LIKE '%-%';

四、组装员工id的字符串

var del_idstr = "";

del_idstr += $(this).parents("tr").find("td:eq(1)").text()+"-";

                    //删除del_idstr中最后一个多余的-号

                    del_idstr = del_idstr.substring(0,del_idstr.length-1);

二、给批量删除按钮绑定单击事件

             //删除-批量删除

             $("#emp_delete_all_btn").click(function(){

                    var empNames = "";

                    var del_idstr = "";

                    //找到被选中的每一个check_item

                    $.each($(".check_item:checked"),function(){

                           empNames += 
$(this).parents("tr").find("td:eq(2)").text()+",";

                           del_idstr += 
$(this).parents("tr").find("td:eq(1)").text()+"-";

                           

                    });

                    //删除empNames中最后一个多余的,号

                    empNames = empNames.substring(0,empNames.length-1);

                    //删除del_idstr中最后一个多余的-号

                    del_idstr = del_idstr.substring(0,del_idstr.length-1);

                    if (confirm("确认删除【" + empNames + "】吗？")) {

                           //确认，发送ajax请求

                           $.ajax({

                                 url : "${APP_PATH}/emp/" + del_idstr,

                                 type : "DELETE",

                                 success : function(result) {

                                        //回到本页

                                        to_page(currentPage);

                                        alert(result.msg);

                                 }

                           });

                    }

             });