org.frameworkset.http.RequestHeaderUtil Maven / Gradle / Ivy
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package org.frameworkset.http;
/**
* Copyright 2008 biaoping.yin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import com.frameworkset.util.StringUtil;
import org.frameworkset.util.LinkedCaseInsensitiveMap;
import javax.servlet.http.HttpServletRequest;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.Map;
/**
*
Description:
*
* Copyright (c) 2018
* @Date 2019/1/28 16:01
* @author biaoping.yin
* @version 1.0
*/
public class RequestHeaderUtil {
public static HttpHeaders getHeaders(HttpServletRequest servletRequest) {
HttpHeaders headers = (HttpHeaders)servletRequest.getAttribute("org_frameworkset_http_HttpHeaders__");
if(headers != null )
{
return headers;
}
headers = new HttpHeaders();
for (Enumeration headerNames = servletRequest.getHeaderNames(); headerNames.hasMoreElements();) {
String headerName = (String) headerNames.nextElement();
for (Enumeration headerValues = servletRequest.getHeaders(headerName);
headerValues.hasMoreElements();) {
String headerValue = (String) headerValues.nextElement();
headers.add(headerName, headerValue);
}
}
// HttpServletRequest exposes some headers as properties: we should include those if not already present
MediaType contentType = headers.getContentType();
if (contentType == null) {
String requestContentType = servletRequest.getContentType();
if (StringUtil.hasLength(requestContentType)) {
contentType = MediaType.parseMediaType(requestContentType);
headers.setContentType(contentType);
}
}
if (contentType != null && contentType.getCharSet() == null) {
String requestEncoding = servletRequest.getCharacterEncoding();
if (StringUtil.hasLength(requestEncoding)) {
Charset charSet = Charset.forName(requestEncoding);
Map params = new LinkedCaseInsensitiveMap();
params.putAll(contentType.getParameters());
params.put("charset", charSet.toString());
MediaType newContentType = new MediaType(contentType.getType(), contentType.getSubtype(), params);
headers.setContentType(newContentType);
}
}
if (headers.getContentLength() == -1) {
int requestContentLength = servletRequest.getContentLength();
if (requestContentLength != -1) {
headers.setContentLength(requestContentLength);
}
}
servletRequest.setAttribute("org_frameworkset_http_HttpHeaders__",headers);
return headers;
}
}