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[J2EE]Tomcat跨域配置

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在项目web.xml文件中添加以下代码

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<filter>
	<filter-name>CorsFilter</filter-name>
	<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
	<init-param>
		<param-name>cors.allowed.origins</param-name>
		<param-value>*</param-value>
	</init-param>
	<init-param>
		<param-name>cors.allowed.methods</param-name>
		<param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>
	</init-param>
	<init-param>
		<param-name>cors.allowed.headers</param-name>
		<param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>
	</init-param>
	<init-param>
		<param-name>cors.exposed.headers</param-name>
		<param-value>Access-Control-Allow-Origin,X-Requested-With,Access-Control-Allow-Credentials</param-value>
	</init-param>
	<init-param>
		<param-name>cors.support.credentials</param-name>
		<param-value>false</param-value>
	</init-param>
	<init-param>
		<param-name>cors.preflight.maxage</param-name>
		<param-value>10</param-value>
	</init-param>
</filter>
<filter-mapping>
	<filter-name>CorsFilter</filter-name>
	<url-pattern>*</url-pattern>
</filter-mapping>

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