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ServletUtil.java
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/
ServletUtil.java
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package org.jboss.resteasy.plugins.server.servlet;
import org.jboss.resteasy.core.Headers;
import org.jboss.resteasy.specimpl.ResteasyHttpHeaders;
import org.jboss.resteasy.specimpl.ResteasyUriInfo;
import org.jboss.resteasy.util.HttpHeaderNames;
import org.jboss.resteasy.util.MediaTypeHelper;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.core.Cookie;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class ServletUtil
{
public static ResteasyUriInfo extractUriInfo(HttpServletRequest request, String servletPrefix)
{
String contextPath = request.getContextPath();
if (servletPrefix != null && servletPrefix.length() > 0 && !servletPrefix.equals("/"))
{
if (!contextPath.endsWith("/") && !servletPrefix.startsWith("/"))
contextPath += "/";
contextPath += servletPrefix;
}
String queryString = request.getQueryString();
String absolute;
if (queryString != null && queryString.length() > 0)
{
absolute = request.getRequestURL().append('?').append(queryString).toString();
}
else
{
absolute = request.getRequestURL().toString();
}
if (!absolute.contains(contextPath))
{
String encodedContextPath = Arrays.stream(contextPath.substring(1).split("/"))
.map(s -> {
try {
return URLEncoder.encode(s, "UTF-8");
} catch (UnsupportedEncodingException ex) {
return s;
}
})
.collect(Collectors.joining("/", "/", ""));
if (absolute.contains(encodedContextPath))
{
absolute = absolute.replace(encodedContextPath, contextPath);
}
}
return new ResteasyUriInfo(absolute, contextPath);
}
public static ResteasyHttpHeaders extractHttpHeaders(HttpServletRequest request)
{
MultivaluedMap<String, String> requestHeaders = extractRequestHeaders(request);
ResteasyHttpHeaders headers = new ResteasyHttpHeaders(requestHeaders);
String contentType = request.getContentType();
if (contentType != null)
headers.getMutableHeaders().putSingle(HttpHeaders.CONTENT_TYPE, contentType);
Map<String, Cookie> cookies = extractCookies(request);
headers.setCookies(cookies);
// test parsing should throw an exception on error
headers.testParsing();
return headers;
}
static Map<String, Cookie> extractCookies(HttpServletRequest request)
{
Map<String, Cookie> cookies = new HashMap<String, Cookie>();
if (request.getCookies() != null)
{
for (javax.servlet.http.Cookie cookie : request.getCookies())
{
cookies.put(cookie.getName(), new Cookie(cookie.getName(), cookie.getValue(), cookie.getPath(),
cookie.getDomain(), cookie.getVersion()));
}
}
return cookies;
}
public static List<MediaType> extractAccepts(MultivaluedMap<String, String> requestHeaders)
{
List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
List<String> accepts = requestHeaders.get(HttpHeaderNames.ACCEPT);
if (accepts == null)
return acceptableMediaTypes;
for (String accept : accepts)
{
acceptableMediaTypes.addAll(MediaTypeHelper.parseHeader(accept));
}
return acceptableMediaTypes;
}
public static List<String> extractLanguages(MultivaluedMap<String, String> requestHeaders)
{
List<String> acceptable = new ArrayList<String>();
List<String> accepts = requestHeaders.get(HttpHeaderNames.ACCEPT_LANGUAGE);
if (accepts == null)
return acceptable;
for (String accept : accepts)
{
String[] splits = accept.split(",");
for (String split : splits)
acceptable.add(split.trim());
}
return acceptable;
}
public static MultivaluedMap<String, String> extractRequestHeaders(HttpServletRequest request)
{
Headers<String> requestHeaders = new Headers<String>();
Enumeration<String> headerNames = request.getHeaderNames();
while (headerNames.hasMoreElements())
{
String headerName = headerNames.nextElement();
Enumeration<String> headerValues = request.getHeaders(headerName);
while (headerValues.hasMoreElements())
{
String headerValue = headerValues.nextElement();
requestHeaders.add(headerName, headerValue);
}
}
return requestHeaders;
}
}