initfilter.java

来自「很全面的hrm管理。提供通用的企业人力资源管理。」· Java 代码 · 共 38 行

package org.self.hrm.web;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import org.self.hrm.common.Constant;

public class InitFilter implements Filter {

	private FilterConfig filterConfig = null;

	public void destroy() {
		this.filterConfig = null;
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		ServletContext context = filterConfig.getServletContext();
		if(context.getAttribute(Constant.CONTEXT_PATH) == null){
			context.setAttribute(Constant.CONTEXT_PATH, ((HttpServletRequest)request).getContextPath());
		}
		chain.doFilter(request, response);
	}

	public void init(FilterConfig filterConfig) throws ServletException {
		this.filterConfig = filterConfig;
	}

}