ssm项目之删除员工

本文地址:http://www.cnblogs.com/maplefighting/p/7544483.html 

删除可以分为单个删除和批量删除

一、单个删除

employeeController.java

/** * 删除员工 * @param id * @return
     */ @ResponseBody @RequestMapping(value="/emp/{id}", method=RequestMethod.DELETE) public Msg deleteEmpById(@PathVariable("id")Integer id) { //Integer id = Integer.parseInt(id);
 employeeService.deleteEmp(id); return Msg.success(); }

employeeService.java

/** * 员工删除 * @param id */
    public void deleteEmp(Integer id) { employeeMapper.deleteByPrimaryKey(id); }

index.jsp

//单个删除
    $(document).on("click",".delete_btn", function(){
        //1、弹出确认删除对话框
        var empName = $(this).parents("tr").find("td:eq(2)").text();
        var empId = $(this).attr("del-id");
        if(confirm("确认删除【" + empName + "】吗?")) {
            //确认，发送 Ajax
            $.ajax({
                url: "${APP_PATH}/emp/" + empId,
                type: "DELETE",
                success: function(result) {
                    alert(result.msg);
                    //回到本页
                    to_page(currentPage);
                }
            });
        }
    });

二、批量删除

 先完成前面那个点击最上面全选全不选的功能

//完成全选全不选
    $("#check_all").click(function() { //prop修改和读取原生dom属性的值
        $(".check_item").prop("checked", $(this).prop("checked")); }); $(document).on("click",".check_item", function() { var flag = $(".check_item:checked").length == $(".check_item").length; $("#check_all").prop("checked", flag); });

点击批量删除

//点击全部删除，就批量删除
    $("#emp_delete_all_btn").click(function() { var empNames = ""; var del_idstr = ""; $.each($(".check_item:checked"), function() { empNames += $(this).parents("tr").find("td:eq(2)").text() + ","; del_idstr += $(this).parents("tr").find("td:eq(1)").text() + "-"; }); empNames = empNames.substring(0, empNames.length - 1); del_idstr = del_idstr.substring(0, del_idstr.length - 1); if(confirm("确认删除【" + empNames + "】吗?")) { $.ajax({ url:"${APP_PATH}/emp/" + del_idstr, type:"DELETE", success:function(result) { alert(result.msg); to_page(currentPage); } }); } });

批量删除的直接用横杠拼接起来，单个删除和批量删除放在一起处理

EmployeeController.java

/** * 单个或批量删除员工 * @param id * @return
     */ @ResponseBody @RequestMapping(value="/emp/{ids}", method=RequestMethod.DELETE) public Msg deleteEmpById(@PathVariable("ids")String ids) { //批量删除
        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)); } employeeService.deleteBatch(del_ids); } else { //单个删除
            Integer id = Integer.parseInt(ids); employeeService.deleteEmp(id); } return Msg.success(); }

EmployeeService.java

/** * 员工单个删除 * @param id */
    public void deleteEmp(Integer id) { employeeMapper.deleteByPrimaryKey(id); } /** * 批量删除 * @param ids */
    public void deleteBatch(List<Integer> ids) { EmployeeExample example = new EmployeeExample(); Criteria criteria = example.createCriteria(); //delete from xxxx where emp_id in (1,2,3)
 criteria.andEmpIdIn(ids); employeeMapper.deleteByExample(example); }

测试

单个

批量

这样CRUD就做完了，不过Controller里的一些逻辑啥的最好放在Service层，毕竟Service层才是主要写逻辑的，反正怎么顺手怎么来吧

项目完整代码github地址:https://github.com/maplewtf/ssm-crud 觉得写得还可以的不要忘记点个star哦！