[网络协议]Layui上传文件提示org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The

一、问题

springboot项目在上传较大文件时报错：

org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: 

The field file exceeds its maximum permitted size of 1048576 bytes.

二、解决

springBoot项目自带的tomcat对上传的文件大小有默认1M限制，

SpringBoot官方文档中展示：

每个文件的配置最大为1Mb，单次请求的文件的总数不能大于10Mb。

直接在在application.properties配置文件中加入如下代码：

# maxFileSize 单个数据大小
spring.servlet.multipart.maxFileSize = 10MB
# maxRequestSize 是总数据大小
spring.servlet.multipart.maxRequestSize=100MB

三、相关代码

layui代码：

<script th:inline="javascript">

    ctxPath = /*[[@{/}]]*/ '';

    layui.use(["element", "layer", "upload"], function () {
        var element = layui.element;
        var layer = layui.layer;
        var upload = layui.upload;

        layui.upload.render({
            elem: "#importData",
            url: ctxPath + 'xx/uploadFile?id=' + [[${id}]],
            size: '10240',
            accept: "file",
            exts: 'pdf',
            before: function () {
                layer.load();
            },
            done: function (result) {
                if (result.code === 0) {
                    layer.msg(result.message, {icon: 1, time: 1000}, function () {
                        var index = parent.layer.getFrameIndex(window.name);
                        parent.layer.close(index);
                        parent.$('.layui-laypage-btn').click();
                    });
                } else if (result.code === -1) {
                    layer.msg(result.message, {icon: 5, time: 2000}, function () {
                        var index = parent.layer.getFrameIndex(window.name);
                        parent.layer.close(index);
                        parent.$('.layui-laypage-btn').click();
                    });
                }
                layer.closeAll('loading');
            }
        });
    });
</script>

后台接口示例：

@ResponseBody
    @PostMapping(value = "upload")
    public Result upload(@RequestParam MultipartFile file) {
        log.info("Excel批量上传认证多选题信息！");
            ...
            int i = service.insertBatch(legalizeList);
            if (i > 0) {
                log.info("批量导入成功");
                return Result.success("导入成功", null);
            } else {
                log.error("批量导入失败!");
                return Result.error("导入失败!");
            }
        } catch (Exception e) {
            log.error("数据导入出现异常：{}", e.getMessage());
            return Result.error("数据导入失败，请检查数据格式!");
        }
    }

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