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1、场景

上传文件，文件大小1.7M，请求接口报错

接口：

@PostMapping("/import")
@ResponseBody
public FormatResponse imports(@RequestParam("file") MultipartFile file) {
    /**省略业务代码**/
}

2、定位原因

查看日志：

org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; 
nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 1048576 bytes.

查看源码知：默认maxFileSize为1MB

@ConfigurationProperties(prefix = "spring.servlet.multipart", ignoreUnknownFields = false)
public class MultipartProperties {

	/**
	 * Whether to enable support of multipart uploads.
	 */
	private boolean enabled = true;

	/**
	 * Intermediate location of uploaded files.
	 */
	private String location;

	/**
	 * Max file size. Values can use the suffixes "MB" or "KB" to indicate megabytes or
	 * kilobytes, respectively.
	 */
	private String maxFileSize = "1MB";

	/**
	 * Max request size. Values can use the suffixes "MB" or "KB" to indicate megabytes or
	 * kilobytes, respectively.
	 */
	private String maxRequestSize = "10MB";

	/**
	 * Threshold after which files are written to disk. Values can use the suffixes "MB"
	 * or "KB" to indicate megabytes or kilobytes, respectively.
	 */
	private String fileSizeThreshold = "0";

	/**
	 * Whether to resolve the multipart request lazily at the time of file or parameter
	 * access.
	 */
	private boolean resolveLazily = false;
}

3、解决方案：

配置maxFileSize参数

spring:
  servlet:
    multipart:
      maxFileSize: 2MB

配置完成本地成功上传1.7M文件（localhost）

4、环境运行

部署测试环境上传失败

Response Headers如下：Request Entity Too Large

HTTP/1.1 413 Request Entity Too Large
date: Mon, 01 Mar 2021 09:20:53 GMT
content-type: text/html
content-length: 578

联系运营修改域名配置

本文标签： MaximumMaxUploadSizeExceededExceptionUploadexceededsize

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