FilterConfig的用法是什么？

9）FilterConfig的用法：

FilterConfig可以从web.xml当中取得一些有关Filter参数，当Web应用启动时就可以获得了。

例 1.2.9

package com;

import java.io.IOException;

import java.io.PrintWriter;

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.HttpServletResponse;

public class MarkToWinFilter implements Filter {

public void destroy() {

}

public void doFilter(ServletRequest request, ServletResponse response,

FilterChain chain) throws IOException, ServletException {

}

protected FilterConfig filterConfig;

public void init(FilterConfig fConfig) throws ServletException {

this.filterConfig = fConfig;

System.out.println(filterConfig.getInitParameter("name"));

}

}

更多请看：https://blog.csdn.net/qq_44638460/article/details/104099777