Servlet过滤器更改响应？

Question

我有下面的servlet过滤器。

public class MyFilter extends BaseServletRequestFilter {

        @Override
    protected void afterExecutingFilterChain(final ServletRequest requset, FilterResponseWrapper response) throws ServletException {

//To do
    }

       @Override
    protected void beforeExecutingFilterChain(final ServletRequest requset, final FilterResponseWrapper response) throws ServletException{

    //Here request needs to be intercepted
   //To do
}


}

public enum CustomStatus {


    OK("Ok"),

    BAD_REQUEST("BadRequest");

    private final String value;

    CustomStatus(String v) {
        value = v;
    }

    public String value() {
        return value;
    }

    public static CustomStatus fromValue(String v) {
        for (CustomStatus c: CustomStatus.values()) {
            if (c.value.equals(v)) {
                return c;
            }
        }
        throw new IllegalArgumentException(v);
    }

}

Answer 1

使用筛选器接口：

public final class XssFilter implements Filter {

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
  throws IOException, ServletException
{
    //check request...
    if (ok) {
       chain.doFilter(request, response);
    } else {
       // do something with the response
    }
}

不能更具体地说明这一点，因为您没有确切地说明正在检查的布尔值在哪里（是参数，还是URL的一部分，还是cookie，还是header？），也没有确切地说明要对响应执行什么操作。