rest - 未找到嵌入变量的 Grails URLMapping

Question

我有一个包含以下结构的 URLMapping.groovy 文件:

class UrlMappings {
    static mappings = {
        "/someThing" (resources: "someThingApi", includes: ["index", "show", "create", "update", "delete"]) {
            "/nestedThing/$type?" (controller: "someThingApi", action: [GET: "showNestedThing"])
        }
}

当我这样调用 REST 接口(interface)时，它工作正常(调用 showNestedThing 函数):GET/someThing/{id}/nestedThing，但是当我尝试调用 GET/someThing/{id}/nestedThing/{type} 我得到以下答复:

{
  "timestamp": 1445247531624,
  "status": 404,
  "error": "Not Found",
  "message": "No message available",
  "path": "/someThing/1/nestedThing/someType"
}

而不是它调用函数，我可以通过按预期执行 params.type 来获取 someType 。如果我检查我的 grails url 映射 (grails url-mappings-report) /someThing/${someThingId}/nestedThing/null?显示而不是预期的 /someThing/${someThingId}/nestedThing/${type}? .

使用 Grails 3.0.9。

Answer 1

虽然不理想并且没有回答我的原始问题，但有一种解决方法可以解决我的问题，即删除嵌套的 URLMapping 并稍后在 URLMapping 文件中添加它:

class UrlMappings {
    static mappings = {
        "/someThing" (resources: "someThingApi", includes: ["index", "show", "create", "update", "delete"]) {
            "/nestedThing/$type?" (controller: "someThingApi", action: [GET: "showNestedThing"])
        }
}

变成:

class UrlMappings {
    static mappings = {
        "/someThing" (resources: "someThingApi", includes: ["index", "show", "create", "update", "delete"])
        "/something/${someThingApiId}/nestedThing/${nestedThingApiId}?" (controller: "someThingApi", action: [GET: "showNestedThing"])
    }
}

这暂时解决了这个问题，但没有回答为什么我的原始嵌套代码不起作用的问题。