基于CXF开发webservice,想在webservice实现类中获得HttpServletRequest对象,用了几种方式,用@Resources标签或者@Context标签都不行。@Context标签下对象为null,@Resource标签虽然注入了org.apache.cxf.jaxws.context.WebServiceContextImpl了WebServiceContext 对象,但是该对象内部值为null,什么也取不到。
后面用了个笨办法,在web.xml中增加一个filter
<filter> <filter-name>ContextServlet</filter-name> <filter-class>xxx.filter.ContextServlet</filter-class> </filter> <filter-mapping> <filter-name>ContextServlet</filter-name> <url-pattern>/services/*</url-pattern> </filter-mapping>
在filter中访问HttpServletRequest,将需要获得的值保存在ThreadLocal中
public static ThreadLocal<String> path = new ThreadLocal<String>(); @Override public void destroy() { path.remove(); } @Override public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException { HttpServletRequest request=(HttpServletRequest)arg0; String path = request.getContextPath(); basePath.set(path); arg2.doFilter(arg0, arg1); }
这样,在webservice的实现类中只要用 ContextServlet.path.get()就可以获得当前HttpServletRequest对中的变量。