3大框架合成后  怎么增加一个过来器呢  我想整个权限控制   不用SPRING自带的框架(懒得配)

解决方案 »

  1.   

    自己写一个。在web.xml里加裁这个过滤器。用<filter>
      

  2.   

    五个有用的过滤器 
    http://www.javaeye.com/topic/211147在一个系统中通常有多个权限的用户。不同权限用户的可以浏览不同的页面。使用Filter进行判断不仅省下了代码量,而且如果要更改的话只需要在Filter文件里动下就可以。 
    以下是Filter文件代码: 
    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;    
       
    public class RightFilter implements Filter {    
       
        public void destroy() {    
                
         }    
       
        public void doFilter(ServletRequest sreq, ServletResponse sres, FilterChain arg2) throws IOException, ServletException {    
            // 获取uri地址    
             HttpServletRequest request=(HttpServletRequest)sreq;    
             String uri = request.getRequestURI();    
             String ctx=request.getContextPath();    
             uri = uri.substring(ctx.length());    
            //判断admin级别网页的浏览权限    
            if(uri.startsWith("/admin")) {    
                if(request.getSession().getAttribute("admin")==null) {    
                     request.setAttribute("message","您没有这个权限");    
                     request.getRequestDispatcher("/login.jsp").forward(sreq,sres);    
                    return;    
                 }    
             }    
            //判断manage级别网页的浏览权限    
            if(uri.startsWith("/manage")) {    
                //这里省去    
                 }    
             }    
            //下面还可以添加其他的用户权限,省去。    
       
         }    
       
        public void init(FilterConfig arg0) throws ServletException {    
                
         }    
       
    } <!-- 判断页面的访问权限 -->   
      <filter>   
         <filter-name>RightFilter</filter-name>   
          <filter-class>cn.itkui.filter.RightFilter</filter-class>   
      </filter>   
      <filter-mapping>   
          <filter-name>RightFilter</filter-name>   
          <url-pattern>/admin/*</url-pattern>   
      </filter-mapping>   
      <filter-mapping>   
          <filter-name>RightFilter</filter-name>   
          <url-pattern>/manage/*</url-pattern>   
      </filter-mapping>   在web.xml中加入Filter的配置,如下: 
    <filter>           <filter-name>EncodingAndCacheflush</filter-name>   
            <filter-class>EncodingAndCacheflush</filter-class>   
            <init-param>   
                <param-name>encoding</param-name>   
                <param-value>UTF-8</param-value>   
            </init-param>   
        </filter>   
        <filter-mapping>   
            <filter-name>EncodingAndCacheflush</filter-name>   
            <url-pattern>/*</url-pattern>   
        </filter-mapping>   
    要传递参数的时候最好使用form进行传参,如果使用链接的话当中文字符的时候过滤器转码是不会起作用的,还有就是页面上 form的method也要设置为post,不然过滤器也起不了作用。 
      

  3.   

    权限控制用struts2的自定义interceptor.
      

  4.   


    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;public class CharacterEncodingFilter implements Filter { public void destroy() {
    } public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain chain) throws IOException, ServletException {
    HttpServletRequest req = (HttpServletRequest) request;
    req.setCharacterEncoding("UTF-8");
    chain.doFilter(request, response); } public void init(FilterConfig config) throws ServletException {
    }}web.xml的配置<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <filter>
            <filter-name>Character</filter-name>
    <filter-class>com.v1.yangxian.filter.CharacterEncodingFilter</filter-class>
    </filter>
    <filter-mapping>
    <filter-name>Character</filter-name>
    <url-pattern>*.do</url-pattern>
    </filter-mapping>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
    </web-app>