Class RewriteHandler

  • All Implemented Interfaces:
    Handler, HandlerContainer, Container, Destroyable, Dumpable, LifeCycle

    public class RewriteHandler
    extends HandlerWrapper

    Rewrite handler is responsible for managing the rules. Its capabilities is not only limited for URL rewrites such as RewritePatternRule or RewriteRegexRule. There is also handling for cookies, headers, redirection, setting status or error codes whenever the rule finds a match.

    The rules can be matched by the either: pattern matching of PathMap (eg PatternRule), regular expressions (eg RegexRule) or certain conditions set (eg MsieSslRule - the requests must be in SSL mode).

    The rules can be grouped into rule containers (class RuleContainer), and will only be applied if the request matches the conditions for their container (e.g., by virtual host name)

    The list of predefined rules is:

    Here is a typical jetty.xml configuration would be:
    
         <New id="RewriteHandler" class="org.eclipse.jetty.rewrite.handler.RewriteHandler">
           <Set name="rules">
             <Array type="org.eclipse.jetty.rewrite.handler.Rule">
    
               <Item>
                 <New id="rewrite" class="org.eclipse.jetty.rewrite.handler.RewritePatternRule">
                   <Set name="pattern">/*</Set>
                   <Set name="replacement">/test</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="response" class="org.eclipse.jetty.rewrite.handler.ResponsePatternRule">
                   <Set name="pattern">/session/</Set>
                   <Set name="code">400</Set>
                   <Set name="reason">Setting error code 400</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="header" class="org.eclipse.jetty.rewrite.handler.HeaderPatternRule">
                   <Set name="pattern">*.jsp</Set>
                   <Set name="name">server</Set>
                   <Set name="value">dexter webserver</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="header" class="org.eclipse.jetty.rewrite.handler.HeaderPatternRule">
                   <Set name="pattern">*.jsp</Set>
                   <Set name="name">title</Set>
                   <Set name="value">driven header purpose</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="redirect" class="org.eclipse.jetty.rewrite.handler.RedirectPatternRule">
                   <Set name="pattern">/test/dispatch</Set>
                   <Set name="location">http://jetty.eclipse.org</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="regexRewrite" class="org.eclipse.jetty.rewrite.handler.RewriteRegexRule">
                   <Set name="regex">/test-jaas/$</Set>
                   <Set name="replacement">/demo</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="forwardedHttps" class="org.eclipse.jetty.rewrite.handler.ForwardedSchemeHeaderRule">
                   <Set name="header">X-Forwarded-Scheme</Set>
                   <Set name="headerValue">https</Set>
                   <Set name="scheme">https</Set>
                 </New>
               </Item>
    
               <Item>
                 <New id="virtualHost" class="org.eclipse.jetty.rewrite.handler.VirtualHostRuleContainer">
    
                   <Set name="virtualHosts">
                     <Array type="java.lang.String">
                       <Item>eclipse.com</Item>
                       <Item>www.eclipse.com</Item>
                       <Item>eclipse.org</Item>
                       <Item>www.eclipse.org</Item>
                     </Array>
                   </Set>
    
                   <Call name="addRule">
                     <Arg>
                       <New class="org.eclipse.jetty.rewrite.handler.CookiePatternRule">
                         <Set name="pattern">/*</Set>
                         <Set name="name">CookiePatternRule</Set>
                         <Set name="value">1</Set>
                       </New>
                     </Arg>
                   </Call>
    
                 </New>
               </Item>
    
             </Array>
           </Set>
         </New>
    
         <Set name="handler">
           <New id="Handlers" class="org.eclipse.jetty.server.handler.HandlerCollection">
             <Set name="handlers">
               <Array type="org.eclipse.jetty.server.Handler">
                 <Item>
                   <Ref id="RewriteHandler"/>
                 </Item>
                 <Item>
                   <New id="Contexts" class="org.eclipse.jetty.server.handler.ContextHandlerCollection"/>
                 </Item>
                 <Item>
                   <New id="DefaultHandler" class="org.eclipse.jetty.server.handler.DefaultHandler"/>
                 </Item>
                 <Item>
                   <New id="RequestLog" class="org.eclipse.jetty.server.handler.RequestLogHandler"/>
                 </Item>
               </Array>
             </Set>
           </New>
         </Set>
     
    • Constructor Detail

      • RewriteHandler

        public RewriteHandler()
    • Method Detail

      • getRules

        public Rule[] getRules()
        Returns the list of rules.
        Returns:
        an array of Rule.
      • setRules

        public void setRules​(Rule[] rules)
        Assigns the rules to process.
        Parameters:
        rules - an array of Rule.
      • setRules

        @Deprecated
        public void setRules​(RuleContainer rules)
        Deprecated.
        Assigns the rules to process.
        Parameters:
        rules - a RuleContainer containing other rules to process
      • setRuleContainer

        public void setRuleContainer​(RuleContainer rules)
        Assigns the rules to process.
        Parameters:
        rules - a RuleContainer containing other rules to process
      • addRule

        public void addRule​(Rule rule)
        Add a Rule
        Parameters:
        rule - The rule to add to the end of the rules array
      • isRewriteRequestURI

        public boolean isRewriteRequestURI()
        Returns:
        the rewriteRequestURI If true, this handler will rewrite the value returned by HttpServletRequest.getRequestURI().
      • setRewriteRequestURI

        public void setRewriteRequestURI​(boolean rewriteRequestURI)
        Parameters:
        rewriteRequestURI - true if this handler will rewrite the value returned by HttpServletRequest.getRequestURI().
      • isRewritePathInfo

        public boolean isRewritePathInfo()
        Returns:
        true if this handler will rewrite the value returned by HttpServletRequest.getPathInfo().
      • setRewritePathInfo

        public void setRewritePathInfo​(boolean rewritePathInfo)
        Parameters:
        rewritePathInfo - true if this handler will rewrite the value returned by HttpServletRequest.getPathInfo().
      • getOriginalPathAttribute

        public java.lang.String getOriginalPathAttribute()
        Returns:
        the originalPathAttribte. If non null, this string will be used as the attribute name to store the original request path.
      • setOriginalPathAttribute

        public void setOriginalPathAttribute​(java.lang.String originalPathAttribute)
        Parameters:
        originalPathAttribute - If non null, this string will be used as the attribute name to store the original request path.
      • getDispatcherTypes

        public java.util.EnumSet<javax.servlet.DispatcherType> getDispatcherTypes()
      • setDispatcherTypes

        public void setDispatcherTypes​(java.util.EnumSet<javax.servlet.DispatcherType> types)
      • setDispatcherTypes

        public void setDispatcherTypes​(javax.servlet.DispatcherType... types)
      • handle

        public void handle​(java.lang.String target,
                           Request baseRequest,
                           javax.servlet.http.HttpServletRequest request,
                           javax.servlet.http.HttpServletResponse response)
                    throws java.io.IOException,
                           javax.servlet.ServletException
        Description copied from interface: Handler
        Handle a request.
        Specified by:
        handle in interface Handler
        Overrides:
        handle in class HandlerWrapper
        Parameters:
        target - The target of the request - either a URI or a name.
        baseRequest - The original unwrapped request object.
        request - The request either as the Request object or a wrapper of that request. The HttpConnection.getCurrentConnection().getHttpChannel().getRequest() method can be used access the Request object if required.
        response - The response as the Response object or a wrapper of that request. The HttpConnection.getCurrentConnection().getHttpChannel().getResponse() method can be used access the Response object if required.
        Throws:
        java.io.IOException - if unable to handle the request or response processing
        javax.servlet.ServletException - if unable to handle the request or response due to underlying servlet issue