Tomcat 跨域问题处理方案

1、允许Tomcat所有域访问，需要新建文件clientaccesspolicy.xml和crossdomain.xml加入%TOMCAT_HOME%\webapps\ROOT 目录下

clientaccesspolicy.xml

<?xml version=”1.0″ encoding=”utf-8″ ?>

<access-policy>

<cross-domain-access>

<allow-from http-request-headers=”*”>

</allow-from>

<grant-to>

</grant-to>

</policy>

</cross-domain-access>

</access-policy>

crossdomain.xml

<?xml version=”1.0″?>

<cross-domain-policy>

<allow-access-from domain=”*” />

</cross-domain-policy>

2、maven配置

<dependency>
    <groupId>com.thetransactioncompany</groupId>
    <artifactId>cors-filter</artifactId>
    <version>2.4</version>
</dependency>
<dependency>
    <groupId>com.thetransactioncompany</groupId>
    <artifactId>java-property-utils</artifactId>
    <version>1.9.1</version>
</dependency>

3、ROOT下的web.xml

<!--解决tomcat部署跨域问题  -->
<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>

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