解决跨域问题

web.xml文件中，写在第一个filter上面
<filter>
    <filter-name>CORS</filter-name>
    <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>

    <init-param>
      <param-name>cors.allowGenericHttpRequests</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>cors.allowOrigin</param-name>
      <param-value>*</param-value>
    </init-param>
    <init-param>
      <param-name>cors.allowSubdomains</param-name>
      <param-value>false</param-value>
    </init-param>
    <init-param>
      <param-name>cors.supportedMethods</param-name>
      <param-value>GET,HEAD,POST,OPTIONS</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></param-value>
    </init-param>
    <init-param>
      <param-name>cors.suppertsCredentials</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>cors.maxAge</param-name>
      <param-value>3600</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CORS</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>




pom文件
 <dependency>
            <groupId>com.thetransactioncompany</groupId>
            <artifactId>cors-filter</artifactId>
            <version>2.6</version>
        </dependency>

        <dependency>
            <groupId>com.thetransactioncompany</groupId>
            <artifactId>java-property-utils</artifactId>
            <version>1.9</version>
        </dependency>
    </dependencies>

  具体jar 请看文件  cors-filter-1.7.jar.zip