以下是一个使用Java Filter进行URL过滤的简单实例，这个实例将展示如何拦截所有访问特定JSP页面的请求，并在过滤链中添加自定义逻辑。

```java

filter url过滤jsp实例，如何实现filterurl过滤jsp实例实例介绍 第1张

import javax.servlet.*;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

public class URLFilter implements Filter {

@Override

public void init(FilterConfig filterConfig) throws ServletException {

// 初始化时可以读取配置信息

}

@Override

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

HttpServletRequest httpRequest = (HttpServletRequest) request;

HttpServletResponse httpResponse = (HttpServletResponse) response;

// 获取请求的URL

String requestURI = httpRequest.getRequestURI();

// 假设我们要过滤的是访问名为"