jspforwardfilter.java

来自「自己编写的一个JSP+SERVER的框架, 实际项目已经运用多次,效率很好.」· Java 代码 · 共 39 行

package com.aptech.util.filter;

import java.io.IOException;

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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class JspForwardFilter implements Filter {

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		// 向下转型后,可以进行一些复杂的逻辑操作
		String uris = "/login.jsp,/index.jsp,/main.jsp,/menu.jsp,/top.jsp";
		HttpServletRequest httpRequest = (HttpServletRequest) request;
		String uri = httpRequest.getRequestURI();

		if (uris.indexOf(uri) == -1) {
			HttpServletResponse httpResponse = (HttpServletResponse) response;
			httpResponse.sendRedirect("/index.jsp");
		} else {
			chain.doFilter(request, response);
		}
	}

	public void init(FilterConfig arg0) throws ServletException {
	}

	public void destroy() {

	}

}