jQuery ajax调用是否支持PATCH？

Question

当我发送此ajax rquest时：

$.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");
            }
        });

我收到此错误：

XMLHttpRequest无法加载http：//：// localhost：8080 / wutup / venues / 12。Access-
Control-Allow-Methods不允许使用方法PATCH。

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

Answer 1

该$.ajax方法 确实 支持HTTP PATCH。

您看到的问题是该ajax方法Access-Control-Allow- Methods在选项预检检查的响应标头中查找PATCH
。您的响应中缺少此标头，或者此标头的值中未包含PATCH方法。无论哪种情况，问题都出在服务器上，而不是客户端代码中。

这是使用Java的示例：

response.addHeader("Access-Control-Allow-Methods", "GET, POST, PATCH, PUT, DELETE");