何时去@RequestParam和@PathVariable [英] When to go for @RequestParam and @PathVariable

问题描述

只是想知道在哪种情况下我们应该选择 @RequestParam 和 @PathVariable 。我知道：

Just curious to know in which scenario we should go for @RequestParam and @PathVariable. I know that:

1. @RequestParam 获取参数值而 @PathVariable 占位符值


2. @RequestParam 在提出请求时可以是可选的（必需= false）而必须提供 @PathVariable 值。


3. 当我们想要使用 @RequestParam 时，我们必须知道属性语法，但 @PathVariable 不需要

1. @RequestParam takes parameter value whereas @PathVariable takes placeholder value
2. @RequestParam can be optional (required=false) while making request whereas @PathVariable value has to be provided.
3. When we want to use @RequestParam we have to know the property syntax but for @PathVariable not required

还有其他理由去特定的吗？

Is there any other reason to go for specific one?

推荐答案

如果你想遵守'statefull'网址，请使用 @PathVariable 。

Use @PathVariable if you want to adhere to 'statefull' URLs.

例如： -

/customer/:id   Customer view/edit page
/customer/      Customer Add page
/customer/list  List Customer Page
/customer/:cid/order  All order of a Customer
/customer/:cid/order/:oid  Specific order of a partucular Customer.

明智地使用路径变量将导致URL提供关于结果视图/页面的提示/线索手段。

Wisely using Path Variable will result in URL that gives you hint/clue about what the resulting view/page means.

这也可以让你支持刷新，返回&没有
额外工作的正向操作。

This also lets you support refresh,back & forward operation with no extra effort.

@RequestParams可用于解除未作为路径参数传递的数据。您的MVC处理程序可以根据需要组合两个。

@RequestParams can be used to exatract data which is not passed as path params. Your MVC handler can have combination of two as required.

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