當開發工程與ArcGIS API 所在tomcat不在一起是，即出現跨域問題，跨域問題集中在api的樣式圖片、字體pbf等。
解決方案：
在ArcGIS API所在tomcat添加跨域過濾器設置。
修改tomcat中conf下web.xml文件，添加如下設置
注意：cors.allowed.origins設置爲 * ，則表示任何origin均可訪問，但不能與cors.support.credentials爲true同時設置。
<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,Access-Control-Allow-Credentials</param-value>
</init-param>
<!-- <init-param> -->
<!-- <param-name>cors.support.credentials</param-name> -->
<!-- <param-value>true</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>