Chapter 3 business function development (delete clues)

1. Analyze according to functional requirements , The parameters for deleting thread transmission are id, Because multiple parameters can be deleted at the same time , So the parameter passed should be string data . The return value is int type

ClueMapper Interface

 

2.ClueMapper.xml file

 <delete id="deleteClueById" parameterType="string">
    delete from tbl_clue
    where id in
    <foreach collection="array" item="id" open="(" separator="," close=")">
      #{id}
    </foreach>
  </delete>

3.ClueService Interface

 

4.ClueServiceImpl class

 5.ClueController

 @RequestMapping(value = "/workbench/clue/removeClueChecked.do")
    @ResponseBody
    public Object removeClueChecked(String[] id){
        ReturnObject returnObject=new ReturnObject();
        try{
            int i = clueService.removeClueChecked(id);
            if (i>0){
                returnObject.setCode(Contants.RETURN_OBJECT_CODE_SUCCESS);
            }else {
                returnObject.setCode(Contants.RETURN_OBJECT_CODE_FAIL);
                returnObject.setMessage(" The system is busy , Please try again later ！");
            }
        }catch (Exception e){
            e.printStackTrace();
        }
        return returnObject;
    }

6.clue Of index.jsp page

js Code

// Add a delete event to the delete button 
		$("#removeClueBtn").click(function () {
			// Collection parameters 
			var checkedIds=$("#tBody input[type='checkbox']:checked");
			// validate form 
			if (checkedIds.size()==0){
				alert(" Please select the campaign to delete ！");
				return;
			}
			var ids="";
			$.each(checkedIds,function () {
				ids+="id="+this.value+"&";
			});
			ids=ids.substr(0,ids.length-1);
			if (window.confirm(" Are you sure to delete ？")) {
				// Send a request 
				$.ajax({
					url: "workbench/clue/removeClueChecked.do",
					type: 'post',
					dataType: 'json',
					data:ids,
					success:function (data) {
						if (data.code=='1'){
							queryClueByConditionForPage(
							$("#demo_page").bs_pagination("getOption","currentPage"),
							$("#demo_page").bs_pagination("getOption","rowsPerPage")
							);
						} else {
							alert(data.message);
						}
					}
				});
			}
		});

A functional test

Select any piece of data , Click the delete button

After confirmation of brushing , Refresh the page