幾個java proxy servlet 工具

HTTP-Proxy-Servlet

這個工具使用比較簡單，能夠經過配置，或者代碼的方式 https://github.com/mitre/HTTP-Proxy-Servlethtml

servlet 配置方式

 
          <servlet> 
         
           <servlet-name>clusterProxy</servlet-name> 
         
           <servlet-class>org.mitre.dsmiley.httpproxy.URITemplateProxyServlet</servlet-class> 
         
           <init-param> 
         
           <param-name>targetUri</param-name> 
         
           <param-value>http://{_subHost}.behindfirewall.mycompany.com:{_port}/{_path}</param-value> 
         
           </init-param> 
         
           <init-param> 
         
           <param-name>log</param-name> 
         
           <param-value>true</param-value> 
         
           </init-param> 
         
          </servlet> 
         
          ​ 
         
          <servlet-mapping> 
         
           <servlet-name>clusterProxy</servlet-name> 
         
           <url-pattern>/mywebapp/cluster/*</url-pattern> 
         
          </servlet-mapping>

spring boot 代碼方式

 
          @Configuration 
         
          public class SolrProxyServletConfiguration implements EnvironmentAware { 
         
          ​ 
         
           @Bean 
         
           public ServletRegistrationBean servletRegistrationBean(){ 
         
           ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new ProxyServlet(), propertyResolver.getProperty("servlet_url")); 
         
           servletRegistrationBean.addInitParameter(ProxyServlet.P_TARGET_URI, propertyResolver.getProperty("target_url")); 
         
           servletRegistrationBean.addInitParameter(ProxyServlet.P_LOG, propertyResolver.getProperty("logging_enabled", "false")); 
         
           return servletRegistrationBean; 
         
           } 
         
          ​ 
         
           private RelaxedPropertyResolver propertyResolver; 
         
          ​ 
         
           @Override 
         
           public void setEnvironment(Environment environment) { 
         
           this.propertyResolver = new RelaxedPropertyResolver(environment, "proxy.solr."); 
         
           } 
         
          }

yaml 配置git

 
          proxy: 
         
           solr: 
         
           servlet_url: /solr/* 
         
           target_url: http://solrserver:8983/solr

Jetty's ProxyServlet:

這個是最全也是比較複雜的一個實現
https://www.eclipse.org/jetty/documentation/9.4.x/proxy-servlet.htmlgithub

netflix zuul

spring cloud netflix zuul gateway 使用的技術https://github.com/Netflix/zuul，目前主要包括了兩個版本1.x 以及 2差別仍是比較大的
zuul 不一樣filter 階段處理的方式很不錯，比較靈活web

charon-spring-boot-starter

功能很全，很方便的一個工具
https://github.com/mkopylec/charon-spring-boot-starter/wikispring

簡單使用

          
        import static com.github.mkopylec.charon.configuration.CharonConfigurer.charonConfiguration; 
       
        import static com.github.mkopylec.charon.configuration.RequestMappingConfigurer.requestMapping; 
       
        import static com.github.mkopylec.charon.forwarding.interceptors.rewrite.RequestServerNameRewriterConfigurer.requestServerNameRewriter; 
       
        ​ 
       
        @Configuration 
       
        class CharonConfiguration { 
       
        ​ 
       
         @Bean 
       
         CharonConfigurer charonConfigurer() { 
       
         return charonConfiguration() 
       
         .set(requestServerNameRewriter().outgoingServers("host1:8080", "host2:8081")) 
       
         .add(requestMapping("all requests mapping")); 
       
         } 
       
        }