关于struts2.1.6 中使用<s:url >

Question

之前使用struts2.0.11.1的时候,使用 标签时,会在后面生成一段;jsessionid=xxx;在网上看了一些解决方法;

例如:

修改core/src/main/java/org/apache/struts2/dispatcher/mapper/DefaultActionMapper.java中的getMapping()方法;
......

但是2.1.6版本中,对这个问题已经做了处理.但是在使用时,在浏览器第一次加载的时候仍然含有;jsessionid=xxx;

请高人给个解决方法..

Answer 1

加一个过滤器代码如下：

package com.yunfei.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import javax.servlet.http.HttpSession;

@SuppressWarnings("deprecation")
public class DisableUrlSessionFilter implements Filter
{

/** *//**
 * Filters requests to disable URL-based session identifiers. 
 */
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
{
    // skip non-http requests
    if (!(request instanceof HttpServletRequest))
    {
        chain.doFilter(request, response);
        return;
    }

    HttpServletRequest httpRequest = (HttpServletRequest) request;
    HttpServletResponse httpResponse = (HttpServletResponse) response;

    // clear session if session id in URL
    if (httpRequest.isRequestedSessionIdFromURL())
    {
        HttpSession session = httpRequest.getSession();
        if (session != null) session.invalidate();
    }

    // wrap response to remove URL encoding
    HttpServletResponseWrapper wrappedResponse = new HttpServletResponseWrapper(httpResponse)
    {
        @Override
        public String encodeRedirectUrl(String url) { return url; }

        @Override
        public String encodeRedirectURL(String url) { return url; }

        @Override
        public String encodeUrl(String url) { return url; }

        @Override
        public String encodeURL(String url) { return url; }
    };

    // process next request in chain
    chain.doFilter(request, wrappedResponse);
}

/** *//**
 * Unused.
 */
public void init(FilterConfig config) throws ServletException {}

/** *//**
 * Unused.
 */
public void destroy() {}

}

在web.xml中加入filter的配置，如下：

DisableUrlSessionFilter

com.yunfei.filter.DisableUrlSessionFilter

<filter-mapping>
    <filter-name>DisableUrlSessionFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>