跳过基于条件的Java筛选器

我已经研究并遵循了解决方案，但这没有帮助

我的web.xml中有三个过滤器。按此顺序排列的Struts筛选器、自定义筛选器和IAM代理筛选器。我想根据某些条件跳过IAM筛选器。我无法控制IAM过滤器的外部代码。因此，当前端参数表示usertype是internal时，我需要调用IAM代理筛选器，否则我需要跳过此筛选器

Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
id="WebApp_ID" 
version="2.5">
<display-name>App</display-name>
<!-- Struts2 Filter -->
<filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
    <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>*.action</url-pattern>
</filter-mapping>
 <!-- Custom App Filter for Handling Internal And External User-->
<filter>
   <filter-name>UserType</filter-name>
   <filter-class>com.App.web.filter.LoginFilter</filter-class>
</filter>
<filter-mapping>
   <filter-name>UserType</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>

<!-- IAM Filter for Internal Users only-->
<filter>
   <filter-name>Agent</filter-name>
   <filter-class>com.sun.identity.agents.filter.AmAgentFilter</filter-class>
</filter>
<filter-mapping>
   <filter-name>Agent</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>   

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<listener>
    <listener-class>org.apache.tiles.web.startup.TilesListener</listener-class>
</listener>
<listener> 
    <listener-class>com.App.init.InitListener</listener-class>
</listener>
<context-param>
    <param-name>org.apache.tiles.impl.BasicTilesContainer.DEFINITIONS_CONFIG</param-name>
    <param-value>/WEB-INF/tiles.xml</param-value>
</context-param>

<!-- Web Service -->
<servlet>
    <servlet-name>EventManagementWS</servlet-name>
    <servlet-class>com.App.eventmanagement.ws.EventManagementWS</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>EventManagementWS</servlet-name>
    <url-pattern>/EventManagementWS</url-pattern>
</servlet-mapping>
<resource-ref>
       <res-ref-name>url/ConfigProperty</res-ref-name>
       <res-type>java.net.URL</res-type>
       <res-auth>Container</res-auth>
       <res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>

所以我删除了S标记并使用了硬编码，但现在我在所有css中都得到了404错误，我试图包括这些错误

我觉得这位前锋好像工作不好

Java筛选器代码：

package com.App.web.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.HttpSession;

import org.apache.commons.lang.StringUtils;

import com.App.constant.Constant;
import com.App.init.WIMSInitListener;
import com.App.log.WIMSMessageLogger;

public class LoginFilter implements Filter{

FilterConfig _filterConfig = null;
@Override
public void destroy(){
    // TODO Auto-generated method stub

}

@Override
public void doFilter(ServletRequest request, ServletResponse response, 
       FilterChain filterChain) throws IOException, ServletException{
    // Check IAM is enabled
    if (InitListener.isIAMEnabled()){
        HttpSession session = httpRequest.getSession();
        String userType = (String) session.getAttribute(Constant.USER_TYPE);
        if(userType == null || "".equals(userType)){
            MessageLogger.putMessageLog("User type is null : First Request" + userType, getClass());
            userType = request.getParameter(Constant.USER_TYPE);
            session.setAttribute(Constant.USER_TYPE, userType);
            request.getRequestDispatcher(((HttpServletRequest)request).getServletPath() + 
                    StringUtils.defaultString(((HttpServletRequest)request).getPathInfo()))
                        .forward(request, response);

        }
        if("external".equals(userType)){
            MessageLogger.putMessageLog("External User" + userType, getClass());
            request.getRequestDispatcher(((HttpServletRequest)request).getServletPath() + 
                    StringUtils.defaultString(((HttpServletRequest)request).getPathInfo()))
                        .forward(request, response);

        }
        else if("internal".equals(userType)){
            MessageLogger.putMessageLog("Internal User" + userType, getClass());
            //IAM Filter com.sun.identity.agents.filter.AmAgentFilter
            filterChain.doFilter(request, response);
        }
   }
   //Its always External User
   else{
       MessageLogger.putMessageLog("User IAM Not Enabled", getClass());
       request.getRequestDispatcher(((HttpServletRequest)request).getServletPath() + 
               StringUtils.defaultString(((HttpServletRequest)request).getPathInfo()) )
                      .forward(request, response);

   }
}

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

Index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01     Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>App</title>
<link rel="stylesheet" type="text/css" media="screen"
href="/App/css/common.css" />
<link rel="stylesheet" type="text/css" media="screen"
href="/App/css/rcorp.css" />
<link rel="stylesheet" type="text/css" media="all"
href="/App/css/style.css" />
<link rel="stylesheet" type="text/css" media="all"
href="/App/css/rcorp.css" />
<link rel="stylesheet" type="text/css" media="all"
href="/App/css/default.css" />
<script type="text/javascript">
function selectUserType(){
var frm = document.forms["UserTypeForm"];
if(document.getElementById("userTypeInternal").checked){
    //frm.action='<s:url action="loginAction.action?usertype=internal" namespace="" />';
    frm.action='/App/loginAction.action?usertype=internal';
}
else{
    //frm.action='<s:url action="loginAction.action?usertype=external" namespace="" />';
    frm.action='/App/loginAction.action?usertype=external';
}   
frm.target='_parent';
frm.submit();
}
function checkUserType(){   
//var userType = '<s:property value="#session.usertype" />';
var userType = '<%= session.getAttribute("usertype") %>';
if(userType == 'internal'){
    //frm.action='<s:url action="loginAction.action?usertype=internal" namespace="" />';
    frm.action='/App/loginAction.action?usertype=internal';
    frm.target='_parent';
    frm.submit();
}
else if(userType == 'external'){
    //frm.action='<s:url action="loginAction.action?usertype=external" namespace="" />';
    frm.action='/App/loginAction.action?usertype=external';
    frm.target='_parent';
    frm.submit();
}
}
</script>
</head>
<body onload="javascript:checkUserType();">
<form method="POST" action="loginAction.action" name="UserTypeForm">
    <div id="display_option"
        style="DISPLAY: none; position: absolute; top: 40%; width: 100%;"
        align="center">
        <div class="rcorp-tbl">
            <div style="width: 340px;">
                <div style="border: 1px solid #6da6fe; padding: 5px;">
                    <table style="background-color: #f0f8ff;" cellspacing=2 border=0>
                        <tr>
                            <td class="t-cellsecnowrap">Select User type:</td>
                            <td>
                            <td class="t-cell">
                                <div id="wwgrp_systemType" class="wwgrp">
                                    <div id="wwctrl_systemType" class="wwctrl">
                                        <input type="radio" name="UserType" id="internal" value="internal" checked/>
                                            <label for="userTypeInternal">Internal User (Sydney Trains Users)</label>&nbsp; 
                                        <input type="radio" name="userType" id="external" value="external"/>
                                            <label for="userTypeExternal">External User</label>&nbsp;&nbsp;&nbsp;&nbsp;
                                        <input type="button" name="applyBtn" id="applyBtn" class="btn" value="Go" title="Go" onclick="javascript:selectUserType();"/>
                                    </div>
                                </div>
                            </td>
                        </tr>
                    </table>
                </div>
            </div>
        </div>
    </div>
</form>
</body>
</html>

应用程序
函数selectUserType（）{
var frm=document.forms[“UserTypeForm”]；
if（document.getElementById（“userTypeInternal”）.checked）{
//frm.行动=''；
frm.action='/App/loginAction.action？usertype=internal'；
}
否则{
//frm.行动=''；
frm.action='/App/loginAction.action？usertype=external'；
}   
frm.target=“母公司”；
frm.submit（）；
}
函数checkUserType（）{
//var userType=''；
var userType=''；
如果（userType=='internal'）{
//frm.行动=''；
frm.action='/App/loginAction.action？usertype=internal'；
frm.target=“母公司”；
frm.submit（）；
}
else if（userType=='external'）{
//frm.行动=''；
frm.action='/App/loginAction.action？usertype=external'；
frm.target=“母公司”；
frm.submit（）；
}
}
选择用户类型：
内部用户（悉尼列车用户）
外部用户

创建一个扩展

com.sun.identity.agents.filter.AmAgentFilter

的新类，并在

web.xml

中配置它，而不是试图在

LoginFilter

中控制它。你们班看起来像这样：

public class CustomFilter extends AmAgentFilter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        super.init(filterConfig);
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        if (InitListener.isIAMEnabled()) {
            HttpSession session = httpRequest.getSession();
            String userType = (String) session.getAttribute(Constant.USER_TYPE);
            if ("internal".equals(userType)) {
                super.doFilter(servletRequest, servletResponse, filterChain);
            }
        }
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {
        super.destroy();
    }
}

super.doFilter（）

调用将仅在满足该if块中的条件时执行

AmAgentFilter

中的操作；否则，我们将忽略该过滤器，并转到链中的下一个过滤器

---

您可以在web.xml中配置此筛选器，而不是

AmAgentFilter

中的，我完全忘了抽象代理类。我在调试代码时发现index.jsp中调用的loginaction没有进入dofilter，因此我无法从前端获取用户类型。我正在查找servletRequest.getParameter（Constant.USER\u类型）；在web.xml中，第一个过滤器是struts过滤器，然后是它的CustomFilter。但是，无论您在servlet过滤器中获得用户类型，您都可以在扩展

AmAgentFilter

的过滤器中使用相同的方法。“在web.xml中，第一个过滤器是struts duiker，然后是它的customfilter”是一个问题吗？如果是的话，那么是的，我认为这会奏效。然而，我不熟悉struts过滤器的工作原理。

public class CustomFilter extends AmAgentFilter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        super.init(filterConfig);
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        if (InitListener.isIAMEnabled()) {
            HttpSession session = httpRequest.getSession();
            String userType = (String) session.getAttribute(Constant.USER_TYPE);
            if ("internal".equals(userType)) {
                super.doFilter(servletRequest, servletResponse, filterChain);
            }
        }
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {
        super.destroy();
    }
}