jquery ajax实现一起提交文件和表单元素

前端

<!DOCTYPE html>
<html lang="en" class="no-js" xmlns:th="http://www.thymeleaf.org">

<body id="body" data-spy="scroll" data-target=".header">
<!--<div th:replace="theme/left-music::left-music"></div>-->
<!-- Products -->

<div>

    <input id="name" />
    <input type="file" id="file" />
    <button id="btnShow" class="button">提交</button>
</div>
<script th:src="@{/diy/vendor/jquery.min.js}" type="text/javascript"></script>

<script>

    $(function () {
        $("#btnShow").on('click', function () {
            debugger
            var formdata = new FormData();
            formdata.append("name",  $("#name").val());
            formdata.append("file", $("#file")[0].files[0]);
            $.ajax({
                type: 'POST',//方法类型
                url: "/test/upload",
                data: formdata,
                cache: false,
                processData: false,
                contentType: false,
                success: function (result) {
                    console.log(result);
                },
                error: function () {
                    swal("操作失败", {
                        icon: "error",
                    });
                }
            });
        });

    })


</script>


</body>
<!-- END BODY -->
</html>

后端

    /**
     *
     * @return
     */
    @PostMapping({"/test/upload"})
    public String test(TestData testData) {
        System.out.println(testData);
        return "success";
    }



    private static class TestData{
        private String name;
        private MultipartFile file;

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public MultipartFile getFile() {
            return file;
        }

        public void setFile(MultipartFile file) {
            this.file = file;
        }
    }