Tomcat下 arcgis api for js 4.X部署跨域問題

1、下載Tomcat配置跨域所需的文件（鏈接：https://pan.baidu.com/s/1uV6MsQH6SUaA8RTC2qOQdQ ，提取碼：dedj）；
然後將加壓後的文件夾中的cors-filter-2.5.jar和java-property-utils-1.9.1拷貝到tomcat的lib文件夾內，然後編輯conf文件夾中的web.xml，在250行左右添加如下內容。

<filter>    
    <filter-name>CORS</filter-name>    
    <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>    
    <init-param>    
        <param-name>cors.allowOrigin</param-name>   
        <param-value>*</param-value>   
    </init-param>    
    <init-param>    
        <param-name>cors.supportedMethods</param-name>   
        <param-value>GET, POST, HEAD, PUT, DELETE</param-value>   
    </init-param>    
    <init-param>    
        <param-name>cors.supportedHeaders</param-name>   
        <param-value>Accept, Origin, X-Requested-With, Content-Type, Last-Modified</param-value>   
    </init-param>    
    <init-param>    
        <param-name>cors.exposedHeaders</param-name>   
        <param-value>Set-Cookie</param-value>   
    </init-param>    
    <init-param>    
        <param-name>cors.supportsCredentials</param-name>   
        <param-value>true</param-value>   
    </init-param>    
</filter>    
<filter-mapping>    
    <filter-name>CORS</filter-name>    
    <url-pattern>/*</url-pattern>    
</filter-mapping>

2、配置web.xml文件後，重啓tomcat服務。