使Struts2与Servlet并存解决办法

解决办法:
在Struts2过滤器前增加一个过滤器，使用过滤器转发到servlet上

web.xml配置:
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<filter>
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    <filter-name>JSONRPCServlet</filter-name>
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    <filter-class>filters.ReDispatcherFilter</filter-class>
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    <init-param>
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        <param-name>includeServlets</param-name>
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        <param-value>JRPC</param-value>
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        <!--注:JRPC为下文配置的Servlet JSONRPCServlet过滤的请求配置 -->
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    </init-param>
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</filter>
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<filter-mapping>
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    <filter-name>JSONRPCServlet</filter-name>
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    <url-pattern>/*</url-pattern>
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</filter-mapping>
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<filter>
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    <filter-name>struts2</filter-name>
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    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
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</filter>
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<filter-mapping>
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    <filter-name>struts2</filter-name>
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    <url-pattern>*.action</url-pattern>
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</filter-mapping>
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<filter-mapping>
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    <filter-name>struts2</filter-name>
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    <url-pattern>/*</url-pattern>
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</filter-mapping>
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<!--注：这里同样需要Servlet配置，Filter会转到该Servlet上--> 
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<servlet>
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    <servlet-name>JSONRPCServlet</servlet-name>
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    <servlet-class>
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        jcore.jsonrpc.servlet.JSONRPCServlet
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    </servlet-class>
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    <load-on-startup>2</load-on-startup>
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</servlet>
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<servlet-mapping>
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    <servlet-name>JSONRPCServlet</servlet-name>
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    <url-pattern>/JRPC</url-pattern>
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</servlet-mapping>

过滤器的实现类:

view sourceprint?
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package filters;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.RequestDispatcher;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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public class ReDispatcherFilter implements Filter {
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    public void destroy() {
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        // TODO Auto-generated method stub
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    }
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    public void doFilter(ServletRequest req, ServletResponse resp,
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            FilterChain chain) throws IOException, ServletException {
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        HttpServletRequest request = (HttpServletRequest) req;
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        String target = request.getRequestURI();
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        target = target.lastIndexOf("?") > 0 ? target.substring(target
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                .lastIndexOf("/") + 1, target.lastIndexOf("?")
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                - target.lastIndexOf("/")) : target.substring(target
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                .lastIndexOf("/") + 1);
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        //System.out.println(target);
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        if (this.includes.contains(target)) {
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            RequestDispatcher rdsp = request.getRequestDispatcher(target);
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            //System.out.println("go..............." + rdsp);
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            rdsp.forward(req, resp);
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        } else
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            chain.doFilter(req, resp);
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    }
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    private ArrayList<String> includes = new ArrayList<String>();
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    public void init(FilterConfig config) throws ServletException {
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        this.includes.addAll(Arrays.asList(config.getInitParameter(
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                "includeServlets").split(",")));
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    }
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}