FACELETS_REFRESH_PERIOD的默认值是什么？ [英] What is the default for FACELETS_REFRESH_PERIOD?

问题描述

在JSF应用程序中，参数javax.faces.FACELETS_REFRESH_PERIOD可用于启用/禁用XHTML文件的自动重新加载。

In a JSF application, the parameter javax.faces.FACELETS_REFRESH_PERIOD can be used to enable/disable automatic reloading of XHTML files.

我目前正在研究正确的配置对于生产部署，并偶然发现，我们目前运行FACELETS_REFRESH_PERIOD = 1即使在生产中，这显然不是一个好主意。

I am currently researching the right configuration for production deployments, and accidentally found out that we currently run with FACELETS_REFRESH_PERIOD=1 even in production, which is obviously not a good idea.

这导致的问题：是此参数的默认值？

This lead to the question: What is the default value for this parameter?

理想情况下，为了简单起见，我想从我们的生产配置中省略FACELETS_REFRESH_PERIOD，希望它使用安全默认值为-1。但是，这似乎并不是这样的，因为没有参数，刷新似乎启用（与Mojarra和MyFaces）。

Ideally, I'd like to just omit FACELETS_REFRESH_PERIOD from our production config for simplicity's sake, and hoped it would use a "safe" default value of -1. However, this does not seem to be the case, because without the parameter, refreshing seems to be enabled (with both Mojarra and MyFaces).

我检查了JSF规范，而它描述的参数，它不给出默认值。

I checked the JSF spec, and while it describes the parameter, it does not give a default. Is this a deliberate omission in the spec?

推荐答案

默认值取决于实现。

鉴于您使用的是Mojarra，您可以在 com.sun.faces.config.WebConfiguration class：

Given that you're using Mojarra, you can find the default in the com.sun.faces.config.WebConfiguration class:

768         FaceletsDefaultRefreshPeriod(
769               "javax.faces.FACELETS_REFRESH_PERIOD",
770               "2"
771         )

（行号来自Mojarra 2.0.0） / em>

(line numbers are from Mojarra 2.0.0)

因此，默认值为 2 。我在任何Mojarra文档中找不到这个。您可以向Mojarra的用户发布问题报告，以便更好地记录。

The default is thus 2. I can't find this in any Mojarra documentation. It might be worth to post an issue report to Mojarra guys to better document it.

MyFaces已根据其文档还默认值 2 。

MyFaces has according its documentation also a default value of 2.

更新：从Mojarra 2.2.11，如果项目阶段生产 -1 >。另请参见问题3788 。

Update: From Mojarra 2.2.11, the default value is set to -1 if project stage is Production. See also issue 3788.

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