tomcat跨域訪問

什么是跨域:

簡單地說就是請求幾個不同域名之間的資源,出於對安全的考慮,瀏覽器默認拒絕跨域訪問,導致獲取資源失敗.

方案一:

在tomcat.6.0.27以上版本，跨域問題有簡單解決方法：

在tomcat 的conf 目錄下面　編輯：context.xml

將里面的Context修改為以下即可：

<ContextsessionCookiePath=""sessionCookieDomain=".×××.cn"/>

 

方案二:

導入cors-filter-1.7.jar，java-property-utils-1.9.jar兩個jar包

　　在web.xml里配上:

　　<!-- 實現跨域 -->

    <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>