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To enable CORS support in Spring MVC 4 - Access-Control-Allow-Origin
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package com.elm.mb.rest.filters; | |
import java.io.IOException; | |
import javax.servlet.FilterChain; | |
import javax.servlet.ServletException; | |
import javax.servlet.http.HttpServletRequest; | |
import javax.servlet.http.HttpServletResponse; | |
import org.apache.commons.logging.Log; | |
import org.apache.commons.logging.LogFactory; | |
import org.springframework.web.filter.OncePerRequestFilter; | |
/** | |
* Enabling CORS support - Access-Control-Allow-Origin | |
* @author zeroows@gmail.com | |
* | |
* <code> | |
<!-- Add this to your web.xml to enable "CORS" --> | |
<filter> | |
<filter-name>cors</filter-name> | |
<filter-class>com.elm.mb.rest.filters.CORSFilter</filter-class> | |
</filter> | |
<filter-mapping> | |
<filter-name>cors</filter-name> | |
<url-pattern>/*</url-pattern> | |
</filter-mapping> | |
* </code> | |
*/ | |
public class CORSFilter extends OncePerRequestFilter { | |
private static final Log LOG = LogFactory.getLog(CORSFilter.class); | |
@Override | |
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { | |
response.addHeader("Access-Control-Allow-Origin", "*"); | |
if (request.getHeader("Access-Control-Request-Method") != null && "OPTIONS".equals(request.getMethod())) { | |
LOG.trace("Sending Header...."); | |
// CORS "pre-flight" request | |
response.addHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE"); | |
// response.addHeader("Access-Control-Allow-Headers", "Authorization"); | |
response.addHeader("Access-Control-Allow-Headers", "Content-Type"); | |
response.addHeader("Access-Control-Max-Age", "1"); | |
} | |
filterChain.doFilter(request, response); | |
} | |
} | |
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