关于ajax访问跨域问题

可以自己定义过滤器，其实就是往response响应头中添加相应的头信息。

有现成的API可以解决：

依赖jar包：

<!-- cors跨域解决方案 -->
        <dependency>
            <groupId>com.thetransactioncompany</groupId>
            <artifactId>cors-filter</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>com.thetransactioncompany</groupId>
            <artifactId>java-property-utils</artifactId>
            <version>1.9.1</version>
        </dependency>

 

web.xml 配置文件增加配置（cors.supportedHeaders 可以自定义多个）：

<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, Token, Authorization, appkey, Accept-Encoding, Accept-Language, Access-Control-Request-Headers, Access-Control-Request-Method, Connection, User-Agent, accessToken</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>

 

ok! 解决。