角度+；Spring mvc:进行服务器调用时获取无效CORS请求错误

当我试图从我的登录页面登录时。我被跟踪了。响应为“无效CORS请求”

Request URL:http://127.0.0.1:8088/myproduct/login
Request Method:OPTIONS
Status Code:403 Forbidden
Remote Address:127.0.0.1:8088
Referrer Policy:no-referrer-when-downgrade
Response Headers
view source
Allow:GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH
Cache-Control:no-cache, no-store, must-revalidate
Connection:keep-alive
Content-Length:20
Date:Tue, 16 Jan 2018 09:59:47 GMT
Expires:Thu, 01 Jan 1970 00:00:00 GMT
Pragma:no-cache
Server:WildFly/9
X-Powered-By:Undertow/1
Request Headers
view source
Accept:*/*
Accept-Encoding:gzip, deflate, br
Accept-Language:en-US,en;q=0.9
Access-Control-Request-Headers:content-type
Access-Control-Request-Method:POST
Cache-Control:no-cache
Connection:keep-alive
Host:127.0.0.1:8088
Origin:http://localhost:4200
Pragma:no-cache
User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36`enter code here`

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不明白问题出在哪里？请建议。

您可以通过在服务端添加注释来避免此问题。像这样的-

response.setHeader（“访问控制允许头”，“来源，X请求，内容类型，接受”）； setHeader（“访问控制允许方法”、“POST、GET”）；

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setHeader（“访问控制允许来源”，“本地主机：4200”）

将@CrossOrigin注释放在@RequestMapping注释的顶部

像这样：

@CrossOrigin(origins = "*")
@ResponseStatus(HttpStatus.OK)
@RequestMapping(value = "postanswer", headers = "Accept=application/json;charset=UTF-8", method = RequestMethod.POST)
public ResponseEntity<AnswerResult> PostAnswer(HttpServletRequest request) throws Exception {

@CrossOrigin（origins=“*”）
@ResponseStatus（HttpStatus.OK）
@RequestMapping（value=“postanswer”，headers=“Accept=application/json；charset=UTF-8”，method=RequestMethod.POST）
public ResponseEntity PostAnswer（HttpServletRequest请求）引发异常{

}

请参阅本帖