Tomcat adds the cross-domain access feature-access-control-allow-origin:*

Target: The Tomcat server provides an interface that cannot be accessed in other domains and requires an additional access-control-allow-origin:*

There are many methods of direct configuration, but I have not succeeded, so I can write the interceptor myself.

1. Writing Interceptor Code

Create a new class, implement the filter interface, the code is as follows

Package Com.itxc.filter;import Javax.servlet.*;import Javax.servlet.http.httpservletresponse;import Java.io.ioexception;public class Corsfilter implements Filter {    @Override public    void Init (filterconfig Filterconfig) throws servletexception {    }    @Override public    void DoFilter (ServletRequest servletrequest, Servletresponse Servletresponse, Filterchain filterchain) throws IOException, servletexception {        HttpServletResponse HttpResponse = (httpservletresponse) servletresponse;        Httpresponse.addheader ("Access-control-allow-origin", "*");        Filterchain.dofilter (ServletRequest, servletresponse);    }    @Override public    Void Destroy () {    }}

2. Configure Web. xml

    <filter>        <filter-name>CorsFilter</filter-name>        <filter-class> com.itxc.filter.corsfilter</filter-class>    </filter>    <filter-mapping>        < filter-name>corsfilter</filter-name>        <url-pattern>/*</url-pattern>    </ Filter-mapping>

3. Remove the mess configuration you've previously configured for this feature.

It's done.

Tomcat adds the cross-domain access feature-access-control-allow-origin:*