使用ControllerLinkBuilder的模板变量 [英] Template variables with ControllerLinkBuilder

问题描述

我希望我的答复中包括以下内容:

I want my response to include this:

"keyMaps":{
  "href":"http://localhost/api/keyMaps{/keyMapId}",
  "templated":true
 }

这很容易实现:

add(new Link("http://localhost/api/keyMaps{/keyMapId}", "keyMaps"));

但是，当然，我宁愿使用ControllerLinkBuilder，如下所示:

But, of course, I'd rather use the ControllerLinkBuilder, like this:

add(linkTo(methodOn(KeyMapController.class).getKeyMap("{keyMapId}")).withRel("keyMaps"));

问题在于，当变量"{keyMapId}"到达UriTemplate构造函数时，它已包含在编码的URL中:

The problem is that by the time the variable "{keyMapId}" reaches the UriTemplate constructor, it's been included in an encoded URL:

http://localhost/api/keyMaps/%7BkeyMapId%7D

因此UriTemplate的构造函数无法将其识别为包含变量.

So UriTemplate's constructor doesn't recognise it as containing a variable.

如何说服ControllerLinkBuilder我要使用模板变量?

How can I persuade ControllerLinkBuilder that I want to use template variables?

推荐答案

从此提交开始:

https://github.com/spring-projects/spring-hateoas/commit/2daf8aabfb78b6767bf27ac3e473832c872302c7

您现在可以在需要路径变量的地方传递null.它对我有用，没有解决方法.

You can now pass null where path variable is expected. It works for me, without workarounds.

resource.add(linkTo(methodOn(UsersController.class).someMethod(null)).withRel("someMethod"));

结果:

    "someMethod": {
        "href": "http://localhost:8080/api/v1/users/{userId}",
        "templated": true
    },

还要检查相关问题: https://github.com/spring-projects/spring-hateoas/issues/545

这篇关于使用ControllerLinkBuilder的模板变量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！