子兮子兮

需要修改 Wildfly 对应的配置文件，如 standalone.xml、standalone-full.xml ：

1. 找到对应的 subsystem 节点

1<subsystem xmlns="urn:jboss:domain:undertow:8.0" default-server="default-server">
2  <!-- ...... -->
3</subsystem>

不同版本的 Wildfly 此节点属性 xmlns="urn:jboss:domain:undertow:8.0" 的版本号可能有所不同。

2. 找到 subsystem 的子节点 host

1<host name="default-host" alias="localhost">
2  <!-- ...... -->
3</host>

3. 在 host 节点下添加 filter-ref

1<host name="default-host" alias="localhost">
2  <filter-ref name="allow-origin-header"/><!-- 跨域 -->
3  <filter-ref name="allow-headers-header"/><!-- 跨域 -->
4</host>

4. 在 filters 节点中添加对应的节点

1<filters>
2	<response-header name="allow-origin-header" header-name="Access-Control-Allow-Origin" header-value="*"/><!-- 跨域 -->
3	<response-header name="allow-headers-header" header-name="Access-Control-Allow-Headers" header-value="*"/><!-- 跨域 -->
4</filters>

filters 子节点中的 name 属性必须与 host 字节点中的 name 属性值一一对应。

5. subsystem 节点详细配置

 1<subsystem xmlns="urn:jboss:domain:undertow:8.0" default-server="default-server" default-virtual-host="default-host" default-servlet-container="default" default-security-domain="other">
 2	<buffer-cache name="default"/>
 3	<server name="default-server">
 4		<http-listener name="default" socket-binding="http" redirect-socket="https" enable-http2="true"/>
 5		<https-listener name="https" socket-binding="https" security-realm="ApplicationRealm" enable-http2="true"/>
 6		<host name="default-host" alias="localhost">
 7			<location name="/" handler="welcome-content"/>
 8			<http-invoker security-realm="ApplicationRealm"/>
 9			<access-log pattern="combined" directory="${jboss.home.dir}/standalone/log" prefix="access."/>
10			<filter-ref name="x-powered-by-header"/>
11			<filter-ref name="allow-origin-header"/><!-- 跨域 -->
12			<filter-ref name="allow-headers-header"/><!-- 跨域 -->
13			<filter-ref name="server-header"/>
14			<filter-ref name="not-found"/>
15			<filter-ref name="static"/>
16		</host>
17	</server>
18	<servlet-container name="default" default-encoding="UTF-8">
19		<jsp-config development="true" x-powered-by="false"/>
20		<websockets/>
21	</servlet-container>
22	<handlers>
23		<file name="welcome-content" path="${jboss.home.dir}/welcome-content"/>
24	</handlers>
25	<filters>
26		<response-header name="x-powered-by-header" header-name="X-Powered-By" header-value="zixizixi.com"/>
27		<response-header name="allow-origin-header" header-name="Access-Control-Allow-Origin" header-value="*"/><!-- 跨域 -->
28		<response-header name="allow-headers-header" header-name="Access-Control-Allow-Headers" header-value="*"/><!-- 跨域 -->
29		<response-header name="server-header" header-name="Server" header-value="zixizixi.com"/>
30		<error-page name="not-found" code="404" path="${jboss.home.dir}\welcome-content\404.html"/>
31		<gzip name="static"/>
32	</filters>
33</subsystem>

相关链接：

https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Headers/Access-Control-Allow-Origin
https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Headers/Access-Control-Allow-Methods
https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Headers/Access-Control-Allow-Headers
https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Headers/Access-Control-Allow-Credentials