SpringBoot1.x upgrade SpringBoot2.x stepped pit of file upload size limit

SpringBoot1.x upgrade SpringBoot2.x stepped pit of file upload size limit

Foreword

LZ recently upgraded to 2.1.6 SpringBoo framework, stepped on some pit, presented here is file upload size limit.

Upgrade ago

  #文件上传配置 1.5.9
   spring:
       http:
          multipart:
              enabled: true
              max-file-size: 100Mb
              max-request-size:100Mb

After the upgrade

  ##文件上传配置 2.x
   spring:
     servlet:
       multipart:
         enabled: true
         max-file-size: 100Mb
         max-request-size: 100Mb

the reason

We can see from the source code analysis to find SpringBoot relevant source - MultipartPropertiesclass

package org.springframework.boot.autoconfigure.web.servlet;

import javax.servlet.MultipartConfigElement;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.util.StringUtils;

@ConfigurationProperties(
    prefix = "spring.servlet.multipart",
    ignoreUnknownFields = false
)
public class MultipartProperties {
    private boolean enabled = true;
    private String location;
    private String maxFileSize = "1MB";
    private String maxRequestSize = "10MB";
    private String fileSizeThreshold = "0";
    private boolean resolveLazily = false;
    .........
}

The above is SpringBoot2.x source, seen from above maxFileSize, i.e., the maximum file size, default is limited to 1MB, maxRequestSizei.e. the maximum request size, default is limited to 10MB. Notes that class prefix= spring.servlet.multipart.