java - 仅在 Spring boot 2.0.0 响应时执行 GenericFilterBean

Question

我发现，如果我注册一个 Spring GenericFilterBean 类，它每次都会根据请求调用。仅当服务返回响应时，是否可以调用另一个过滤器(可能是另一个 GeneircFilterBean)？基本上，我想实现与 Jersey ContainerResponseFilter 相同的行为。

提前致谢

Answer 1

您可以在 chain.doFilter(request, response) 方法之后传递代码。这是示例。

public class SimpleLoggingFilter extends GenericFilterBean {
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

        chain.doFilter(request, response);
//This code will work after response
        if ((response instanceof HttpServletResponse) && (request instanceof HttpServletRequest))  {           
            HttpServletResponse httpServletResponse = (HttpServletResponse) response;
            System.out.println("Response status is " + httpServletResponse.getStatus() +" " +
                    "Response  content-length is " + httpServletResponse.getHeader("content-length"));
        }
    }
}