http - Forward a servlet request to another server -

java servlet api can forward requests path within same server (identical host:port). but, forwarding different host:port — proxy — story.

i've tried jersey client, adapting servletrequest — method, headers, mediatype , body — jersey clientrequest (with different base uri), making call, , adapting jersey clientresponse — method, headers, mediatype , body — servletresponse.

adapting manually seems wrong me.

isn't there pure servlet api solution? or http client capable of adapting requests , forth when changing host:port?

http-proxy-servlet need.

quick configuration

pom.xml

<dependency>     <groupid>org.mitre.dsmiley.httpproxy</groupid>     <artifactid>smiley-http-proxy-servlet</artifactid>     <version>1.7</version> </dependency> 

web.xml

<servlet>     <servlet-name>solr</servlet-name>     <servlet-class>org.mitre.dsmiley.httpproxy.proxyservlet</servlet-class>     <init-param>         <param-name>targeturi</param-name>         <param-value>http://solrserver:8983/solr</param-value>     </init-param>     <init-param>         <param-name>log</param-name>         <param-value>true</param-value>     </init-param> </servlet> <servlet-mapping>     <servlet-name>solr</servlet-name>     <url-pattern>/solr/*</url-pattern> </servlet-mapping> 

spring integration

see also: http-proxy-servlet issue #15

pom.xml

<dependency>     <groupid>org.mitre.dsmiley.httpproxy</groupid>     <artifactid>smiley-http-proxy-servlet</artifactid>     <version>1.7</version> </dependency> 

servletwrappingcontrollerext.java

import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletrequestwrapper; import javax.servlet.http.httpservletresponse;  import org.springframework.web.servlet.modelandview; import org.springframework.web.servlet.mvc.servletwrappingcontroller;  public class servletwrappingcontrollerext extends servletwrappingcontroller {     private string  pathtostrip;      public void setpathtostrip(string pathtostrip)     {         this.pathtostrip = pathtostrip;     }      @override     protected modelandview handlerequestinternal(httpservletrequest request, httpservletresponse response)             throws exception     {         final httpservletrequest wrapper = new httpservletrequestwrapper(request)         {             @override             public string getpathinfo()             {                 //please note getpathinfo returns null if dispatcherservlet configured track url-pattern "/"                 //it should configured track url-pattern "/*". below sample dispatcherservlet configuration                 /*                     <servlet>                         <servlet-name>spring</servlet-name>                         <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class>                         <load-on-startup>1</load-on-startup>                     </servlet>                     <servlet-mapping>                         <servlet-name>spring</servlet-name>                         <url-pattern>/*</url-pattern>                     </servlet-mapping>                  */                 string path = super.getpathinfo();                                   if (path.startswith(pathtostrip))                 {                     final int length = pathtostrip.length();                     path = path.substring(length);                 }                 return path;             }              @override             public string getservletpath()             {                 return super.getservletpath();             }         };          return super.handlerequestinternal(wrapper, response);     } } 

beans configuration

<bean id="myservletwrapper" class="servletwrappingcontrollerext">     <property name="pathtostrip" value="/solr"/>     <property name="servletclass" value="org.mitre.dsmiley.httpproxy.proxyservlet" />     <property name="servletname" value="solr" />     <property name="initparameters">         <props>             <prop key="targeturi">http://solrserver:8983/solr</prop>             <prop key="log">true</prop>         </props>     </property> </bean>  <bean id="myservleturlmapping" class="org.springframework.web.servlet.handler.simpleurlhandlermapping">     <property name="urlmap">     <map>         <entry key="/solr/**" value-ref="myservletwrapper" />     </map>     </property>     <property name="order" value="1" /> </bean>