当升级到Grails 2.3.0时，使用RESTful请求缺少参数 [英] Missing parameters with RESTful request when upgrading to Grails 2.3.0

问题描述

我正在使用Grails与RESTful来开发我的Web应用程序。一切正常，直到我将应用程序升级到Grails 2.3。这是我的UrlMappings：
我仍​​然正常发送请求，提交或做一些其他的事情，但在POST，PUT请求中，参数丢失。服务器只是直接识别我直接放在URL上的参数，但是在params变量中找不到提交时仍然保留在表单或模型中。他是我的UrlMappings：

  class UrlMappings {
 
 static mappings = {
 $控制器/ $动作？/ $ id？{constraints {}} 
 
名称apiSingle：/ api / $ controller / $ id（parseRequest：true）{
 action = GET：show，PUT：update，DELETE：delete] 
 constraints {id（matches：/ \d + /）} 
} 
 name apiCollection：/ api / $ controller（parseRequest：true）{
 action = [GET：list，POST：save] 
} 
 
 name api2：/ api / $ （parseRequest：true）
 $ b/ / welcome）
500（查看：'/ error'）
} 
} 
  

我已经阅读了Grails 2.3的最新文档，在 http：// grails .ORG / DOC /最新/引导/ theWebLayer.html＃restfulMappin gs

但我认为不清楚。我试过它遵循文档，但没有结果。并且没有任何关于使用Grails 2.3与RESTful的示例来引用。

如何使之正常工作，并且可以访问REST请求中的所有参数值？非常感谢你！

解决方案

根据这个 http://grails.1312388.n4.nabble.com/Grails-2-3-and-parsing-json- td4649119.html parseRequest 自Grails 2.3以来没有任何效果

如果您将JSON用作请求体，可以将请求参数作为 request.JSON.paramName

作为解决方法，您可以添加一个将填充数据的过滤器从JSON到params：

  class ParseRequestFilters {
 
 def filters = {
 remoteCalls uri：/ remote / **）{
 before = {
 if（request.JSON）{
 log.debug（填充解析json到params）
 params << request.JSON 
} 
} 
} 
} 
} 
  

I am using Grails with RESTful to develop my web application. Everything works fine, till I upgrade my application to Grails 2.3. Here is my UrlMappings: I still send request, submit or do some other things normally, but in POST, PUT requests, the parameters are missing. Server just recognize only the parameters I put on the URL directly, but the remain I enclose in form or model when submit cannot be found in the "params" variable. He is my UrlMappings:

class UrlMappings {

    static mappings = {
        "/$controller/$action?/$id?"{ constraints {} }

        name apiSingle: "/api/$controller/$id"(parseRequest:true){
            action = [GET: "show", PUT: "update", DELETE: "delete"]
            constraints { id(matches:/\d+/) }
        }
        name apiCollection: "/api/$controller"(parseRequest:true){
            action = [GET: "list", POST: "save"]
        }

        name api2: "/api/$controller/$action"(parseRequest:true)
        name api3: "/api/$controller/$action/$id"(parseRequest:true)

        "/"(view:"/welcome")
        "500"(view:'/error')
    }
}

I have read the latest document of Grails 2.3, at http://grails.org/doc/latest/guide/theWebLayer.html#restfulMappings
but I think it is not clear. I have tried it follow the documentation but have no result. And there are no any sample about using Grails 2.3 with RESTful for me to refer.
How can I make it work normally as before, and can access all parameter values in REST request? Thank you so much!

解决方案

According to this http://grails.1312388.n4.nabble.com/Grails-2-3-and-parsing-json-td4649119.html parseRequest has no effect since Grails 2.3

If you use JSON as request body you can accees request params as request.JSON.paramName

As a workaround you can add a filter that will populate data from JSON to params:

class ParseRequestFilters {

    def filters = {
        remoteCalls(uri: "/remote/**") {
            before = {
                if (request.JSON) {
                    log.debug("Populating parsed json to params")
                    params << request.JSON
                }
            }
        }
    }
}

这篇关于当升级到Grails 2.3.0时，使用RESTful请求缺少参数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！