springboot + ajax + mybatis 实现批量删除

实现思路：

　　1. checkbox全选获取批量删除的id数组

　　2. ajax以字符串的形式将id数组传给控制器

　　3. 控制器将字符串分割成List数组作为参数传给mapper

具体代码：

　　1. 前端代码

<table>
    <thead>
        <tr>
            <th>#</th>
            <th>id</th>
            <th>文件名</th>
            <th>文件类型</th>
            <th>上传时间</th>
            <th>上传用户</th>
            <th>文件大小</th>
        </tr>
    </thead>
    <tbody>
        <tr th:each="resource:${resources}">
            <td>
                <input type="checkbox" name="checkId" id="checkId" th:value="${resource.id}"/>
            </td>
            <td th:text="${resource.id}">Row 1 Data 1</td>
            <td th:text="${resource.fileName}">Row 1 Data 2</td>
            <td th:text="${resource.fileType}">Row 1 Data 1</td>
            <td th:text="${resource.fileTime}">Row 1 Data 2</td>
            <td th:text="${resource.fileUploader}">Row 1 Data 1</td>
            <td th:text="${resource.fileSize}">Row 1 Data 2</td>
        </tr>
    </tbody>
</table><br>
<input type="checkbox"  name="selectAll" id="selectAll" onclick="selectAll(this);">全选&emsp;
<button type="button"  onclick="deleteLogic();">批量删除</button>

　　2. js代码

/**
 * checkbox全选/全不全
 * @param checkbox
 */
function selectAll(checkbox) {
    $('input[name="checkId"]').prop('checked', $(checkbox).prop('checked'));
}

/**
 * 批量删除
 */
function deleteLogic() {

    var checkNum = $("input[name='checkId']:checked").length;

    if(checkNum==0){
        alert("至少选择一项");
        return;
    }

    if(confirm("确定要删除吗？")){
        var checkList = new Array();
        $("input[name='checkId']:checked").each(function () {
            checkList.push($(this).val())
        });
    }
    
    $.ajax({
        url:"/deleteAll",
        type:"post",
        data:{
            checkList:checkList.toString()
        },
        datatype:"json",
        success:function (data) {
            location.reload();
            alert("删除成功！")
        },
        error:function (msg) {
            alert("删除失败！")
        }
    })
}

　　3. Controller代码

@PostMapping("/deleteAll")
@ResponseBody
public String deleteAll(String checkList){

    System.out.println("==>"+checkList);

    String[] strs = checkList.split(",");
    List<Integer> ids = new ArrayList<>();

    for(String str:strs){
        ids.add(Integer.parseInt(str));
    }

    resourcesService.deleteAll(ids);

    return "success";
}

　　4. mapper.xml代码

<delete id="deleteAll" parameterType="list">
    delete from resources where id in
    <foreach collection="list" item="id" open="(" close=")" separator=",">
        #{id}
    </foreach>
</delete>