ssm項目之刪除員工

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

刪除可以分為單個刪除和批量刪除

一、單個刪除

employeeController.java

/** * 刪除員工 * @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

/** * 員工刪除 * @param id */
    public void deleteEmp(Integer id) { employeeMapper.deleteByPrimaryKey(id); }

index.jsp

//單個刪除
    $(document).on("click",".delete_btn", function(){
        //1、彈出確認刪除對話框
        var empName = $(this).parents("tr").find("td:eq(2)").text();
        var empId = $(this).attr("del-id");
        if(confirm("確認刪除【" + empName + "】嗎?")) {
            //確認，發送 Ajax
            $.ajax({
                url: "${APP_PATH}/emp/" + empId,
                type: "DELETE",
                success: function(result) {
                    alert(result.msg);
                    //回到本頁
                    to_page(currentPage);
                }
            });
        }
    });

二、批量刪除

 先完成前面那個點擊最上面全選全不選的功能

//完成全選全不選
    $("#check_all").click(function() { //prop修改和讀取原生dom屬性的值
        $(".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); });

點擊批量刪除

//點擊全部刪除，就批量刪除
    $("#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("確認刪除【" + empNames + "】嗎?")) { $.ajax({ url:"${APP_PATH}/emp/" + del_idstr, type:"DELETE", success:function(result) { alert(result.msg); to_page(currentPage); } }); } });

批量刪除的直接用橫杠拼接起來，單個刪除和批量刪除放在一起處理

EmployeeController.java

/** * 單個或批量刪除員工 * @param id * @return
     */ @ResponseBody @RequestMapping(value="/emp/{ids}", method=RequestMethod.DELETE) public Msg deleteEmpById(@PathVariable("ids")String ids) { //批量刪除
        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 { //單個刪除
            Integer id = Integer.parseInt(ids); employeeService.deleteEmp(id); } return Msg.success(); }

EmployeeService.java

/** * 員工單個刪除 * @param id */
    public void deleteEmp(Integer id) { employeeMapper.deleteByPrimaryKey(id); } /** * 批量刪除 * @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); }

測試

單個

批量

這樣CRUD就做完了，不過Controller里的一些邏輯啥的最好放在Service層，畢竟Service層才是主要寫邏輯的，反正怎么順手怎么來吧

項目完整代碼github地址:https://github.com/maplewtf/ssm-crud 覺得寫得還可以的不要忘記點個star哦！