当我发送这个Ajax请求:
$.ajax({
headers : {
'Accept' : 'application/json',
'Content-Type' : 'application/json'
},
url : 'http://localhost:8080/wutup/venues/12',
type : 'PATCH',
data : JSON.stringify({description: "842490812321309213801923 gonzagazors"}),
success : function(response, textStatus, jqXhr) {
console.log("Venue Successfully Patched!");
},
error : function(jqXHR, textStatus, errorThrown) {
// log the error to the console
console.log("The following error occured: " + textStatus, errorThrown);
},
complete : function() {
console.log("Venue Patch Ran");
}
});
我收到这个错误:
XMLHttpRequest无法加载http://localhost:8080/wutup/victions/12。访问控制允许方法不允许使用方法修补程序。
但是,使用curl:
$ curl -v -H "Accept: application/json" -H "Content-type: application/json" -X PATCH - d' {"address": "8421 Gonzaga Ave"}' http://localhost:8080/wutup/venues/12
About to connect() to localhost port 8080 (#0)
Trying 127.0.0.1... connected
Connected to localhost (127.0.0.1) port 8080 (#0)
PATCH /wutup/venues/12 HTTP/1.1
User-Agent: curl/7.21.1 (i686-pc-mingw32) libcurl/7.21.1 OpenSSL/0.9.8r zlib/1.2.3
Host: localhost:8080
Accept: application/json
Content-type: application/json
Content-Length: 57
HTTP/1.1 204 No Content
Server: Apache-Coyote/1.1
Access-Control-Allow-Origin: *
Date: Fri, 30 Nov 2012 08:14:35 GMT
Connection #0 to host localhost left intact
Closing connection #0
$。ajax
方法不支持HTTP补丁。
您看到的问题是,ajax
方法在选项飞行前检查的accesscontrolallowmethods
response头中查找补丁。您的响应中缺少此标头,或者此标头的值中未包含修补程序方法。无论哪种情况,问题都出在服务器上,而不是客户端代码上。
下面是一个使用Java的例子:
response.addHeader("Access-Control-Allow-Methods", "GET, POST, PATCH, PUT, DELETE");
可能是您的浏览器不支持修补方法吗?
取自jQuery AJAX API留档:
要发出的请求类型(POST或GET),默认为GET。注意:这里也可以使用其他HTTP请求方法,如PUT和DELETE,但并非所有浏览器都支持它们。