thymeleaf模板引擎的自定义属性&使用delete删除请求

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1.thymeleaf模板引擎自定义属性 th:attr="属性名=属性值"

<button th:attr="del_uri=@{/emp/}+${emp.id}" class="btn btn-sm btn-danger deleteBtn">删除</button>

2.使用delete删除请求

.....
<main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
	<h2><a class="btn btn-sm btn-success" href="emp" th:href="@{/emp}">员工添加</a></h2>
		<div class="table-responsive">
		<table class="table table-striped table-sm">
			<thead>
				<tr>
					<th>#</th>
					<th>lastName</th>
					<th>email</th>
					<th>gender</th>
					<th>department</th>
					<th>birth</th>
					<th>操作</th>
				</tr>
			</thead>
			<tbody>
				<tr th:each="emp:${emps}">
					<td th:text="${emp.id}"></td>
					<td>[[${emp.lastName}]]</td>
					<td th:text="${emp.email}"></td>
					<td th:text="${emp.gender}==0?'女':'男'"></td>
					<td th:text="${emp.department.departmentName}"></td>
					<td th:text="${#dates.format(emp.birth, 'yyyy-MM-dd HH:mm')}"></td>
					<td>
						<a class="btn btn-sm btn-primary" th:href="@{/emp/}+${emp.id}">编辑</a>
						<button th:attr="del_uri=@{/emp/}+${emp.id}" class="btn btn-sm btn-danger deleteBtn">删除</button>
					</td>
				</tr>
			</tbody>
		</table>
	</div>
</main>
<!--将form表单写在外面，所有的删除操作共用一个表单-->
<form id="deleteEmpForm"  method="post">
	<input type="hidden" name="_method" value="delete"/>
</form>
.....

<script>
	$(".deleteBtn").click(function(){
		//根据点击事件获取到的请求删除当前id
		$("#deleteEmpForm").attr("action",$(this).attr("del_uri")).submit();
		return false;
    });
</script>

3.写一个删除功能的Controller，用@DeleteMapping（"xxx"）

    //员工删除
    @DeleteMapping("/emp/{id}")
    public String deleteEmployee(@PathVariable("id") Integer id){
        employeeDao.delete(id);
        return "redirect:/emps";
    }