tomcat 全局filter配置

在有些时候,你可能需要以你的所有项目进行全局的过滤。

因为你的项目可以设计到互相的依赖和调用 。

修改在tomcat下的conf下的web.xml文件。和在原来的web-inif下的修改一样,添加filter.

然后将你的filter打包成jar,放在tomcat下的lib目录下,如果你知道tomcat的lib目录的作用的话。

<filter>
		<filter-name>appFilter</filter-name>
		<filter-class>com.common.AppFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>appFilter</filter-name>
		<url-pattern>/*</url-pattern>
		<dispatcher>REQUEST</dispatcher>
		<dispatcher>FORWARD</dispatcher>
		<dispatcher>INCLUDE</dispatcher>
	</filter-mapping>

重启tomcat,一切搞定.

public class PathFilter implements Filter {

	public void destroy() {}

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

		HttpServletRequest req		= (HttpServletRequest)request; 
		HttpServletResponse resp	= (HttpServletResponse)response; 
		String uri = req.getRequestURI();
		
		if(uri.endsWith("home.htm")){
			resp.sendRedirect("/hdsst/home/index.jsp");
		}
		
		chain.doFilter(req,resp);
	}
	
	public void init(FilterConfig filterConfig) throws ServletException {}

}


原文地址:https://www.cnblogs.com/yangzhi/p/3576524.html