java涉及到的附件上传大小的问题(Maximum upload size of 52428800 bytes exceeded)

8、附件下载限制问题

1、springboot设置下载大小

在application.yml中设置文件的大小

spring:
  profiles:
    active: dev
  servlet:
    multipart:
      enabled: true
      max-file-size: 300MB
      max-request-size: 300MB

2、war包的话,需要在tomcat设置

maxPostSize tomcat6 是 1 ,tomcat 6 以上是-1 不限制文件大小

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
         maxPostSize="-1"
               redirectPort="8443" />

3、nginx 反向代理的话,需要设置

server {
        listen       80;
        #server_name  localhost;
        client_max_body_size 500M;
  
        #charset koi8-r;
        #access_log  logs/host.access.log  main;
    location / {
        proxy_pass   https://127.0.0.1:8080/;
        }
}

4、如果用了springMvc的,在这里设置

<``bean` `id``=``"multipartResolver"` `class``=``"org.springframework.web.multipart.commons.CommonsMultipartResolver"` `p:defaultEncoding``=``"UTF-8"``>
    ``<``property` `name``=``"maxUploadSize"` `value``=``"524288000"` `/>
    ``<``property` `name``=``"maxInMemorySize"` `value``=``"4096"` `/>
</``bean``>

5、如果使用了国产化的代理服务器的话,(我这里用的是金蝶)

setMaxUploadSize 这个方法里面设置

    @Bean(name="multipartResolver")
    public MultipartResolver multipartResolver(){
        CommonsMultipartResolver resolver = new CommonsMultipartResolver();
        resolver.setDefaultEncoding("UTF-8");
        resolver.setResolveLazily(true);
        resolver.setMaxInMemorySize(40960);
        //文件下载改成500M
        resolver.setMaxUploadSize(500*1024*1024);
        return resolver;
    }
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