这是我的代码:
$.ajax({
url: "/api/invoice/" + newInvoice._id,
type: 'PUT',
data: JSON.stringify(newInvoice),
dataType: 'json',
contentType: "application/json; charset=utf-8"
})
.success(function () {
$('#statusLine').text('Successfully submitted invoice {0}. Click here to dismiss.'.format(newInvoice._id));
})
.error(function (err) {
alert(err);
});
请求:
PUT http://localhost:8000/api/invoice/16211 HTTP/1.1
Host: localhost:8000
Connection: keep-alive
Content-Length: 770
Origin: http://localhost:8000
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11
Content-Type: application/json; charset=UTF-8
Accept: application/json, text/javascript, */*; q=0.01
Referer: http://localhost:8000/invoice.html?id=16211
Accept-Encoding: gzip,deflate,sdch
Accept-Language: fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
{"items":[{"id":...
请求正文实际上是一个有效的 json,为简洁起见,我只是将其截断。
响应:
HTTP/1.1 409 Conflict
X-Powered-By: Express
Content-Type: application/json; charset=utf-8
Content-Length: 1386
ETag: 250542419
Connection: keep-alive
{
"msg": "Cannot update the invoice #16211, because it has already been updated by someone else.",
"invoice": {
"items": [
{...
同样,响应是一个完全有效的 json,为简洁起见被截断。
正如预期的那样,处理程序是用对象error
调用的。err
但是,我怎样才能掌握解析的 json?当然,我可以检查响应的内容类型是否为 json,然后err.responseText
自己解析,但这不是 jQuery ajax 应该为我做的吗?$.get
我的意思是,当我从服务器获取对象时,它会为我的查询执行此操作。
我错过了什么?
编辑
这是对https://stackoverflow.com/a/12310751/80002的更正:
执行请求:
var ajax = $.ajax(...
处理错误响应:
var res, ct = ajax.getResponseHeader("content-type") || '';
if (ct.indexOf('json') > -1) {
res = $.parseJSON(err.responseText);
// process the response here
}