Examples of org.apache.http.Header

org.apache.http.Header
Represents an HTTP header field.
The HTTP header fields follow the same generic format as that given in Section 3.1 of RFC 822. Each header field consists of a name followed by a colon (":") and the field value. Field names are case-insensitive. The field value MAY be preceded by any amount of LWS, though a single SP is preferred.
```
 message-header = field-name ":" [ field-value ] field-name     = token field-value    = *( field-content | LWS ) field-content  = <the OCTETs making up the field-value and consisting of either *TEXT or combinations of token, separators, and quoted-string> 
```
@author Remy Maucherat @author Oleg Kalnichevski @version $Revision: 569636 $

         public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException
         {
            HttpEntity entity = response.getEntity();
            if (entity != null)
            {
               Header header = entity.getContentEncoding();
               if (header != null)
               {
                  HeaderElement[] codecs = header.getElements();
                  for (int i = 0; i < codecs.length; i++)
                  {
                     if (codecs[i].getName().equalsIgnoreCase("gzip"))
                     {
                        response.setEntity(new GzipDecompressingEntity(response.getEntity()));

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       * org.tigris.noodle.filters.CheckForRedirect
       */
      if (statusCode >= HttpServletResponse.SC_MULTIPLE_CHOICES /* 300 */
               && statusCode < HttpServletResponse.SC_NOT_MODIFIED /* 304 */)
      {
         Header locationHeader = proxyResponse.getLastHeader(HttpHeaders.LOCATION);
         if (locationHeader == null)
         {
            throw new ServletException("Received status code: " + statusCode
                     + " but no " + HttpHeaders.LOCATION + " header was found in the response");
         }
         /*
          * Modify the redirect to go to this proxy servlet rather that the proxied host
          */
         String locStr = rewriteUrlFromResponse(servletRequest, locationHeader.getValue());


         servletResponse.sendRedirect(locStr);
         return true;
      }
      /*

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    //设置响应拦截器
        httpClient.addResponseInterceptor(new HttpResponseInterceptor() {
            public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException {
                HttpEntity entity = response.getEntity();
                Header contentEncoding = entity.getContentEncoding();
                if (contentEncoding != null) {
                    HeaderElement[] codecs = contentEncoding.getElements();
                    for (HeaderElement codec : codecs) {
                      //处理GZIP解压缩
                        if (codec.getName().equalsIgnoreCase("gzip")) {
                            response.setEntity(new GzipDecompressingEntity(response.getEntity()));
                            return;

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      entity = response.getEntity();
      //服务端返回的状态码
      int statusCode = response.getStatusLine().getStatusCode();
      if (statusCode != HttpStatus.SC_OK) {
        if (statusCode != HttpStatus.SC_NOT_FOUND) {
          Header locationHeader = response.getFirstHeader("Location");
          //如果是301、302跳转，获取跳转URL即可返回
          if (locationHeader != null && (statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode == HttpStatus.SC_MOVED_TEMPORARILY)) 
            fetchResult.setMovedToUrl(URLCanonicalizer.getCanonicalURL(locationHeader.getValue(), toFetchURL));
        }
        //只要不是OK的除了设置跳转URL外设置statusCode即可返回
        //判断是否有忽略状态码的设置
        if (this.site.getSkipStatusCode() != null && this.site.getSkipStatusCode().trim().length() > 0){
          String[] scs = this.site.getSkipStatusCode().split(",");

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  private Page load(HttpEntity entity) throws Exception {
    Page page = new Page();
    
    //设置返回内容的ContentType
    String contentType = null;
    Header type = entity.getContentType();
    if (type != null) 
      contentType = type.getValue();
    page.setContentType(contentType);
    
    //设置返回内容的字符编码
    String contentEncoding = null;
    Header encoding = entity.getContentEncoding();
    if (encoding != null) 
      contentEncoding = encoding.getValue();
    page.setEncoding(contentEncoding);
    
    //设置返回内容的字符集
    String contentCharset = EntityUtils.getContentCharSet(entity);
    page.setCharset(contentCharset);

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            // check for post redirect as post redirects are not handled
            // automatically
            // RFC2616 (10.3 Redirection 3xx).
            // The second request (forwarded method) can only be a GET or HEAD.
            Header locationHeader = response.getFirstHeader("location");


            if(locationHeader != null
                && req instanceof HttpPost
                &&  (response.getStatusLine().getStatusCode()
                        == HttpStatus.SC_MOVED_PERMANENTLY
                     || response.getStatusLine().getStatusCode()
                        == HttpStatus.SC_MOVED_TEMPORARILY
                     || response.getStatusLine().getStatusCode()
                        == HttpStatus.SC_SEE_OTHER)
                && redirects < MAX_REDIRECTS)
            {
                HttpRequestBase oldreq = req;
                oldreq.abort();


                String newLocation = locationHeader.getValue();


                // append query string if any
                HttpEntity en = ((HttpPost) oldreq).getEntity();
                if(en != null && en instanceof StringEntity)
                {

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            // check for post redirect as post redirects are not handled
            // automatically
            // RFC2616 (10.3 Redirection 3xx).
            // The second request (forwarded method) can only be a GET or HEAD.
            Header locationHeader = response.getFirstHeader("location");


            if(locationHeader != null
                && req instanceof HttpPost
                &&  (response.getStatusLine().getStatusCode()
                        == HttpStatus.SC_MOVED_PERMANENTLY
                     || response.getStatusLine().getStatusCode()
                        == HttpStatus.SC_MOVED_TEMPORARILY
                     || response.getStatusLine().getStatusCode()
                        == HttpStatus.SC_SEE_OTHER)
                && redirects < MAX_REDIRECTS)
            {
                HttpRequestBase oldreq = req;
                oldreq.abort();


                String newLocation = locationHeader.getValue();


                // append query string if any
                HttpEntity en = ((HttpPost) oldreq).getEntity();
                if(en != null && en instanceof StringEntity)
                {

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          callback.onSuccess(response.toString());


          // headers response
          HeaderIterator it = response.headerIterator();
          while (it.hasNext()) {
            Header header = it.nextHeader();
            responseHeaders
                .put(header.getName(), header.getValue());
          }


        } catch (Exception ex) {
          callback.onException(ex);
        } finally {

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            //parsing responseHeaders
           
            HeaderIterator it = httpResponse.headerIterator();
            while (it.hasNext()){
              Header header = it.nextHeader();
              responseHeaders.put(header.getName(), header.getValue());
            }
            
            //Parsing response
            this.response = FileUtils.readInputStream(httpResponse.getEntity().getContent());

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                    + " body: "
                    + note);
            }
            
            if (statusCode == 201) {
                Header loc = response.getFirstHeader("Location");
                if (loc != null) {
                    String locS = loc.getValue();
                    if (!StringUtils.isBlank(locS) && locS.matches(".*/[0-9]+$")) {
                        try {
                            return NumberUtils.createLong(
                                    locS.substring(locS.lastIndexOf("/") + 1));
                        } catch (NumberFormatException e) {

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