Grails3文件上传maxFileSize限制 [英] Grails3 file upload maxFileSize limit

问题描述

我试图在Grails 3中更新文件上传maxFileSize限制，并尝试在 src / main / resources / application.properties ， application.groovy 和 application.yml ，但它仍然抛出异常

<$ p $类
org.apache.tomcat.util.http.fileupload.FileUploadBase $ SizeLimitExceededException
消息
请求被拒绝，因为它的大小（154738）超过了配置最大（128000）

有关Grails 3应用程序中何处以及如何配置的帮助？

解决方案

解决方案是设置 maxFileSize 和 maxRequestSize 限制在 application.yml 文件中。一定要有这样的东西：

  grails：
控制器：
上传：
 maxFileSize：2000000 
 maxRequestSize：2000000 
  

替换 2000000 以及您希望用于文件上传和整个请求的最多字节数。 Grails 3的默认值是128000（〜128KB）。

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常见问题解答

1。如何将MB转换为字节？

  YOUR_MAX_SIZE_IN_MB * 1024 * 1024 = BYTES 
  

例如转换5 MB字节

  5 * 1024 * 1024 = ** 5242880 **字节
  

2。安全

来自 OWASP

限制文件大小为最大值以防止拒绝服务攻击

因此，这些限制的存在是为了防止DoS攻击和强制执行整体应用程序性能（更大的请求大小==从服务器使用的更多内存）。
$ b

3。什么是 maxFileSize 和 maxRequestSize ？的正确值

这取决于应用程序类型，但将它们保持得太高通常是一个糟糕的主意。如果你真的需要上传大文件，那么你可能应该开发（或使用）一个专门的（和分离的）服务。

I am trying to update the file upload maxFileSize limit in Grails 3 and tried the configuration in src/main/resources/application.properties, application.groovy and application.yml, but it's still throwing the exception

Class
    org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException
Message
    the request was rejected because its size (154738) exceeds the configured maximum (128000)

Any help on where and what to configure in a Grails 3 application?

解决方案

The solution is to set maxFileSize and maxRequestSize limits inside your application.yml file. Be sure to have something like this:

grails:
    controllers:
        upload:
            maxFileSize: 2000000
            maxRequestSize: 2000000

Replace 2000000 with the number of max bytes you want for a file upload and for the entire request. Grails 3 default is 128000 (~128KB).

---

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FAQ

1. How to convert from MB to bytes?

YOUR_MAX_SIZE_IN_MB * 1024 * 1024 = BYTES

E.g. Convert 5 MB in bytes

5 * 1024 * 1024 = **5242880** bytes

2. Security

As quote from OWASP

Limit the file size to a maximum value in order to prevent denial of service attacks

So these limits exist to prevent DoS attacks and to enforce overall application performance (bigger request size == more memory used from the server).

3. What is the right value for maxFileSize and maxRequestSize?

It depends on the application type, but it's generally a bad idea to keep them too high. If you really need to upload big files, probably you should develop (or use) a dedicated (and separated) service.

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