Question

我想在Angular 2中发出以下POST请求。

http://gearman.local.eviry.com/info

身体如下

{"gearman_servers" :[{

    "name" : "server 1",
    "addr" : "192.168.1.115"
    },
    {
    "name" : "Server 2",
    "addr" : "192.0.1.126"
    }
    ]}

我确保这在Angular 2之外可行。（使用POSTMAN）我还确保启用了CORS。

以下是我的角度代码

var url = 'http://gearman.local.eviry.com' +
            '/info';
var GEARMAN_DATA = {"gearman_servers" :[{
            "name" : "server 1",
            "addr" : "192.168.1.115"
        },
            {
                "name" : "Server 2",
                "addr" : "192.0.1.126"
            }]};

        let body = JSON.stringify(GEARMAN_DATA);
        let headers = new Headers({ 'Content-Type': 'application/json' });
        let options = new RequestOptions({ headers: headers });

        this.http.post(url, body, options)
            .map(res =>  res.json())
            .subscribe(
                data => {console.log(data);},
                err => this.logError(err),
                () => console.log('Fetching complete for Server Metrics')
            );

logError(err:Response){
        console.log("some error");
        console.log(err);
    }

然而，这样做会给我一个错误

XMLHttpRequest cannot load http://gearman.local.eviry.com/info. Invalid HTTP status code 405

另外，当我在logError函数中打印出错误时，我得到以下内容：

http://grab.by/O7s8

很难弄清楚请求有什么问题。

请求标题如图所示

 Accept:*/*
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:content-type
Access-Control-Request-Method:POST
Cache-Control:no-cache
Connection:keep-alive
Host:gearman.local.eviry.com
Origin:http://evil.com/
Pragma:no-cache
Referer:http://localhost:3000/gearman-ui/job-queue
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.155 Safari/537.36
X-FirePHP:0.4.4
X-FirePHP-Version:0.4.4
X-Wf-Max-Combined-Size:262144

响应标头如图所示

Allow:POST
Cache-Control:no-cache
Connection:Keep-Alive
Content-Length:4519
Content-Type:text/html; charset=UTF-8
Date:Mon, 15 Feb 2016 08:32:54 GMT
Keep-Alive:timeout=5, max=100
Server:Apache/2.2.24 (Unix) mod_ssl/2.2.24 OpenSSL/1.0.1e-fips

如果有人使用POSTMAN，我可以使用以下代码。我必须使用angular实现相同的功能。（请注意，您将无法访问http://gearman.local.eviry.com）

https://www.getpostman.com/collections/f14ecaf29ffd52a54534

Answer 1

我尝试了您的请求（请参阅此plunkr：http://plnkr.co/edit/6sbNYgIlCMNLkyyRerEk?p=preview），看来您的预检请求的响应是不正确的：

XMLHttpRequest cannot load http://gearman.local.eviry.com/info. Response for preflight is invalid (redirect)

看了这个的回应后，我有以下几点：

常规

Request URL:http://gearman.local.eviry.com/info Request Method:OPTIONS Status Code:302 Found Remote Address:49.212.179.100:80

响应标题

Connection:close Content-Length:293 Content-Type:text/html; charset=iso-8859-1 Date:Mon, 15 Feb 2016 08:12:44 GMT Location:https://gearman.local.eviry.com/info Server:Apache

请求标题

Accept:*/* Accept-Encoding:gzip, deflate, sdch Accept-Language:en-US,en;q=0.8,fr-FR;q=0.6,fr;q=0.4 Access-Control-Request-Headers:content-type Access-Control-Request-Method:POST Cache-Control:no-cache Connection:keep-alive Host:gearman.local.eviry.com Origin:http://run.plnkr.co Pragma:no-cache Referer:http://run.plnkr.co/IwOhToeVuXn1o1a4/ User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.109 Safari/537.36

此请求的302状态代码是我认为的问题。此外，我在其回复中没有看到任何CORS标题......

在Angular 2中发出http POST请求

1 个答案: