ajax发送put请求参数,请求参数和PUT方法(Request params and PUT method)

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文章标签： ajax发送put请求参数

请求参数和PUT方法(Request params and PUT method)

我试图通过基于Grails的应用程序获取PUT请求传递的请求参数。

我正在使用以下客户端代码发出请求：

$.ajax({

url: 'api/controllerName/anId',

type: 'PUT',

data: $('form').serialize()

})

与以下映射：

"/api/$controller/$id?" {

action = [ GET: "read", POST: "create", PUT: "update", DELETE: "delete"]

}

但我的控制器的操作收到空的参数列表，只有id值。我试图把它的内容放在日志中，只看到：

[id:anId, action:[GET:read, POST:create, PUT:update, DELETE:delete], controller:controllerName]

request.getParameterNames()返回值的空值列表。

正如我从FireBug看到的，请求包含这个参数，并且将Content-Type设置为application/x-www-form-urlencoded; charset=UTF-8 application/x-www-form-urlencoded; charset=UTF-8

如果我使用GET / POST方法 - 一切都按预期工作，我可以获取所有传递的参数。

我如何获得传递的参数？

更新：我刚才发现PUT意味着将数据作为JSON / XML传递给body。顺便说一句，这个问题仍然是实际的，以防万一

I'm trying to get request params passed by PUT request, at Grails-based app.

I'm using following client code to make request:

$.ajax({

url: 'api/controllerName/anId',

type: 'PUT',

data: $('form').serialize()

})

with following mapping:

"/api/$controller/$id?" {

action = [ GET: "read", POST: "create", PUT: "update", DELETE: "delete"]

}

But my controller's action receives empty params list, with only id value. I tried to put it content to logs and saw only:

[id:anId, action:[GET:read, POST:create, PUT:update, DELETE:delete], controller:controllerName]

and request.getParameterNames() returns empty list of values.

As I see from FireBug, request contains this params, and have Content-Type as application/x-www-form-urlencoded; charset=UTF-8

If I'm using GET/POST method - everything is working as expected, I can get all passed parameters.

How I can get access to passed parameters?

Update: I've just figured that PUT implies passing data as JSON/XML in body. Btw, this question is still actual, just in case

原文：https://stackoverflow.com/questions/7195872

更新时间：2019-11-04 14:25

最满意答案

我今天有完全相同的问题，并能够解决它。我使用JQuery向Grails RESTful WebService(方法：“PUT”)做了一个ajax请求，但参数映射是空的。

只是想在这里分享我的解决方案。

我必须JSON.stringify我的数据，并将contentType设置为“application / json”，然后在我的Grails控制器中使用request.JSON(如前所述)。

示例(JQuery Ajax请求)：

$.ajax({

url: "/entries/" + id,

contentType: "application/json",

type: "PUT",

dataType: "json",

data: JSON.stringify({'name' : name, 'date': date}),

success: function(msg) {

console.log('updated...')

$.mobile.changePage($('#list'));

}

之后我可以使用：

request.JSON

在我的控制器中，以获取由ajax请求发送的数据(参数仍为空)。如果我没有使用JSON.stringify并设置内容类型，我有以下Grails错误：

Error 2012-04-03 13:50:20,046 [http-bio-8080-exec-3] ERROR errors.GrailsExceptionResolver - IllegalStateException occurred when processing request: [PUT] /entries/2

getReader() has already been called for this request. Stacktrace follows:

Message: getReader() has already been called for this request

我使用Grails 2.0.1和JQuery 1.7.1

I had the exact same issue today and was able to fix it. I did an ajax request with JQuery to a Grails RESTful WebService (method: "PUT"), but the parameter map was empty.

Just want to share my solution here.

I had to JSON.stringify my data and set the contentType to "application/json" and then use request.JSON (as suggested before) in my Grails controller.

example (JQuery Ajax Request):

$.ajax({

url: "/entries/" + id,

contentType: "application/json",

type: "PUT",

dataType: "json",

data: JSON.stringify({'name' : name, 'date': date}),

success: function(msg) {

console.log('updated...')

$.mobile.changePage($('#list'));

}

afterwards I could use:

request.JSON

in my Controller in order to get the data sent by the ajax request (params was still empty). If I did not use JSON.stringify and set the content type, I had the following Grails error:

Error 2012-04-03 13:50:20,046 [http-bio-8080-exec-3] ERROR errors.GrailsExceptionResolver - IllegalStateException occurred when processing request: [PUT] /entries/2

getReader() has already been called for this request. Stacktrace follows:

Message: getReader() has already been called for this request

I'm using Grails 2.0.1 and JQuery 1.7.1