/**
   * Override to handle interception
   *
   * @param invocation
   * @return
   * @throws Exception
   */
  public String intercept(ActionInvocation invocation) throws Exception {
    String _logger_method = "intercept";
    if (log.isTraceEnabled()) {
      log.trace("> " + _logger_method);
    }

    String result;
    try {
      String nextPage = checkAccess(invocation);
      if (nextPage == null) {
        Logger invocationLog = null;
        if (log.isDebugEnabled()) {
          invocationLog = Logger.getLogger(invocation.getAction().getClass());
          invocationLog.debug("> " + invocation.getProxy().getMethod());
        }
        result = invocation.invoke();
        if (log.isDebugEnabled()) {
          invocationLog.debug("< " + invocation.getProxy().getMethod());
        }
      } else {
        result = NavConsts.POPUP_TIME_OUT;
      }
    } catch (Exception e) {
      String excID = Long.toString(System.currentTimeMillis());
      BaseAction baseAction = (BaseAction) invocation.getAction();
      baseAction.addFieldError("errorID", "Error ID: " + excID);
      publishException(invocation, new ExceptionHolder(e));

      return NavConsts.POPUP_GLOBAL_ERROR;
    }
    if (log.isTraceEnabled()) {
      log.trace("< " + _logger_method);
    }
    return result;
  }
예제 #2
0
  private void setToGoingURL(
      HttpServletRequest request, HttpSession session, ActionInvocation invocation) {
    // 如果referer不为空 直接使用它。如果为空我们分别获得命名空间,action名,以及请求参数
    // 从新构造成一个URL保存在session中
    String url = request.getHeader("referer");
    //   log.info("待转向URL:"+request.getHeader("referer"));
    if (url == null || url.equals("")) {
      url = "";
      String path = request.getContextPath();
      String actionName = invocation.getProxy().getActionName();
      String nameSpace = invocation.getProxy().getNamespace();
      if (!nameSpace.equals(null)) {
        url = url + path + nameSpace;
      }
      if (!actionName.equals(null)) {
        url = url + "/" + actionName + ".action" + "?";
      }

      Map<String, String[]> zzMap = request.getParameterMap();
      if (zzMap != null) {
        for (String s : zzMap.keySet()) {
          String[] value = zzMap.get(s);
          for (String val : value) {
            url = url + s + "=" + val + "&";
          }
        }
      }
      //   log.info("完整URL:"+url);
    }
    session.setAttribute("GOING_TO", url);
  }
예제 #3
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 @Override
 public String intercept(ActionInvocation ai) throws Exception {
   if (checkLegal(ai, ai.getProxy().getActionName())) {
     if (checkNeedUpdatePsw(ai, ai.getProxy().getActionName())) {
       return "login";
     }
     return ai.invoke();
   }
   return "login";
 }
예제 #4
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  public static String dealWithResult(String finalLocation, ActionInvocation invocation) {
    String namespace = invocation.getProxy().getNamespace();
    String action = invocation.getProxy().getActionName();
    String method = invocation.getProxy().getMethod();

    if (finalLocation.contains("_namespace_")) {
      finalLocation = finalLocation.replace("_namespace_", namespace);
    }
    if (finalLocation.contains("_action_")) {
      finalLocation = finalLocation.replace("_action_", action);
    }

    return finalLocation;
  }
예제 #5
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 @Override
 public String intercept(ActionInvocation invocation) throws Exception {
   Set<String> set = TextParseUtil.commaDelimitedStringToSet(exclude);
   System.out.println(invocation.getProxy().getActionName());
   if (set.contains(invocation.getProxy().getActionName())) {
     return invocation.invoke();
   } else {
     Map<String, Object> session = invocation.getInvocationContext().getContext().getSession();
     if (session.get(loginUser) != null) {
       return invocation.invoke();
     }
   }
   return "loginfail";
 }
예제 #6
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  private void setGoingToURL(Map<String, Object> session, ActionInvocation invocation) {
    String url = "";

    String namespace = invocation.getProxy().getNamespace();
    if (StringUtils.isNotBlank(namespace) && !namespace.equals("/")) {
      url += namespace;
    }

    String actionName = invocation.getProxy().getActionName();
    if (StringUtils.isNotBlank(actionName)) {
      url += "/" + actionName + ".action";
    }

    session.put(GOING_TO_URL_KEY, url);
  }
  @SuppressWarnings("unused")
  @Override
  public String intercept(ActionInvocation actionInvocation) throws Exception {
    String methodName = actionInvocation.getProxy().getMethod();
    Method currentMethod = actionInvocation.getAction().getClass().getMethod(methodName, null);
    // 1、判断客户是否登陆

    // 从session获取当前客户信息
    Employee employee =
        (Employee) ServletActionContext.getRequest().getSession().getAttribute("employee");

    if (employee == null) {
      System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++");
      System.out.println("客户还没登陆或登陆已超时!!!");
      System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++");
      System.out.println();
      return "index";
    }
    // 2、进行权限控制判断

    // 如果该请求方法是需要进行验证的则需执行以下逻辑
    if (currentMethod.isAnnotationPresent(Auth.class)) {
      // 获取权限校验的注解
      Auth authority = currentMethod.getAnnotation(Auth.class);
      // 获取当前请求的注解的actionName
      String actionName = authority.actionName();
      // 获取当前请求需要的权限
      String privilege = authority.privilege();

      // 可以在此判断当前客户是否拥有对应的权限,如果没有可以跳到指定的无权限提示页面,如果拥有则可以继续往下执行。

      // if(拥有对应的权限){
      //    return actionInvocation.invoke();
      // }else{
      //    return "无权限";
      // }

      System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++");
      System.out.println(
          "客户"
              + employee.getUserName()
              + "在"
              + new Date()
              + "执行了"
              + actionName
              + "方法,拥有"
              + privilege
              + "权限!!");
      System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++");
      System.out.println();
      return actionInvocation.invoke();
    }

    // 3、进行非权限控制判断

    System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++");
    System.out.println("我执行了没有??");
    System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++");
    return "index";
  }
예제 #8
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  @Override
  public String intercept(ActionInvocation invocation) throws Exception {
    String methodName = invocation.getProxy().getMethod();
    Class clazz = invocation.getAction().getClass(); // 获取类对象
    Method currentMethod = clazz.getMethod(methodName); // 获取拦截的方法

    // 方法上添加了注解
    if (currentMethod.isAnnotationPresent(Authority.class)) {
      // 取得当前请求的注解的action
      ActionContext context = invocation.getInvocationContext();
      Map session = context.getSession();
      // Constants.UserName=="UserName"
      String user = (String) session.get(Constants.UserName);

      // System.err.println("拦截器起作用");
      if (user == null) // 未登陆,跳转到登录页
      {
        // System.err.println("进入拦截器:未登陆");
        context.put("tip", "你还没有登录");
        return Action.LOGIN;
      } else { // 已登录,继续后续流程
        // System.err.println("进入拦截器:已登录");
        return invocation.invoke();
      }
    } else {
      // System.err.println("进入拦截器:没有使用注解");
      return invocation.invoke();
    }
  }
  @Override
  public String intercept(ActionInvocation invocation) throws Exception {
    String result;

    try {
      result = invocation.invoke();
    } catch (Exception e) {
      if (isLogEnabled()) {
        handleLogging(e);
      }
      List<ExceptionMappingConfig> exceptionMappings =
          invocation.getProxy().getConfig().getExceptionMappings();
      ExceptionMappingConfig mappingConfig = this.findMappingFromExceptions(exceptionMappings, e);
      if (mappingConfig != null && mappingConfig.getResult() != null) {
        Map parameterMap = mappingConfig.getParams();
        // create a mutable HashMap since some interceptors will remove parameters, and parameterMap
        // is immutable
        invocation.getInvocationContext().setParameters(new HashMap<String, Object>(parameterMap));
        result = mappingConfig.getResult();
        publishException(invocation, new ExceptionHolder(e));
      } else {
        throw e;
      }
    }

    return result;
  }
  public void testIncludeParameterInResult() throws Exception {

    ResultConfig resultConfig =
        new ResultConfig.Builder("", "")
            .addParam("actionName", "someActionName")
            .addParam("namespace", "someNamespace")
            .addParam("encode", "true")
            .addParam("parse", "true")
            .addParam("location", "someLocation")
            .addParam("prependServletContext", "true")
            .addParam("method", "someMethod")
            .addParam("param1", "value 1")
            .addParam("param2", "value 2")
            .addParam("param3", "value 3")
            .addParam("anchor", "fragment")
            .build();

    ActionContext context = ActionContext.getContext();
    MockHttpServletRequest req = new MockHttpServletRequest();
    MockHttpServletResponse res = new MockHttpServletResponse();
    context.put(ServletActionContext.HTTP_REQUEST, req);
    context.put(ServletActionContext.HTTP_RESPONSE, res);

    Map<String, ResultConfig> results = new HashMap<String, ResultConfig>();
    results.put("myResult", resultConfig);

    ActionConfig actionConfig =
        new ActionConfig.Builder("", "", "").addResultConfigs(results).build();

    ServletActionRedirectResult result = new ServletActionRedirectResult();
    result.setActionName("myAction");
    result.setNamespace("/myNamespace");
    result.setParse(false);
    result.setEncode(false);
    result.setPrependServletContext(false);
    result.setAnchor("fragment");
    result.setUrlHelper(new DefaultUrlHelper());

    IMocksControl control = createControl();
    ActionProxy mockActionProxy = control.createMock(ActionProxy.class);
    ActionInvocation mockInvocation = control.createMock(ActionInvocation.class);
    expect(mockInvocation.getProxy()).andReturn(mockActionProxy);
    expect(mockInvocation.getResultCode()).andReturn("myResult");
    expect(mockActionProxy.getConfig()).andReturn(actionConfig);
    expect(mockInvocation.getInvocationContext()).andReturn(context);

    control.replay();
    result.setActionMapper(container.getInstance(ActionMapper.class));
    result.execute(mockInvocation);
    assertEquals(
        "/myNamespace/myAction.action?param1=value+1&param2=value+2&param3=value+3#fragment",
        res.getRedirectedUrl());

    control.verify();
  }
예제 #11
0
 /**
  * (non-Javadoc)
  *
  * @see com.opensymphony.xwork2.interceptor.Interceptor#intercept(com.opensymphony
  *     .xwork2.ActionInvocation)
  */
 public String intercept(ActionInvocation actionInvocation) throws Exception {
   LOGGER.info("intercept by AuthenticationInterceptor");
   Map<String, Object> session = actionInvocation.getInvocationContext().getSession();
   // 用户是否登陆
   if (session.get(Constants.USER_NAME) == null) {
     return Action.LOGIN;
   } else {
     // 拦截非法权限
     String nameSpace = actionInvocation.getProxy().getNamespace();
     String actionName = actionInvocation.getProxy().getActionName();
     // 存在nameSpace分别为('/','/test'),action name相同的情况
     String findKey = Constants.POWER_REQUEST;
     if (!"/".equals(nameSpace)) {
       // 不是根目录时,可以目录名做为Key键
     }
     // 从config.privilege.xml中获取action对应的访问权限信息
     String visitPower = Config.params.getString(findKey + actionName);
     // 访问的action在配置信息中不存在则返回Action.LOGIN
     if (visitPower == null || "".equals(visitPower)) {
       LOGGER.info("config.privilege.xml 中不存在 " + actionName + " 配置");
       return Action.LOGIN;
     }
     String[] parm = visitPower.split(Constants.POWER_SPLIT);
     boolean isPrive = true;
     if (Constants.RES_TYPE_USER.equals(session.get(Constants.RES_TYPE))) {
       // 登录后保存了用户的方向权限改从缓存中获取
       isPrive =
           sysUserService.checkPrivilegeByUidAndResCodeAndFunc(
               (Integer) session.get(Constants.UID), parm[0], parm[1]);
     } else {
       isPrive =
           sysRoleService.checkPrivilegeByRidAndResCodeAndFunc(
               (Integer) session.get(Constants.RID), parm[0], parm[1]);
     }
     if (isPrive) {
       return actionInvocation.invoke();
     } else {
       LOGGER.info("action: " + actionName + " 存在,但无权访问,跳转到Action.LOGIN");
       return Action.LOGIN;
     }
   }
 }
예제 #12
0
  public String intercept(ActionInvocation invocation) throws Exception {
    // 获取本次操作

    //		System.out.println(invocation.getAction());
    //		System.out.println(invocation.getProxy().getAction());
    //		System.out.println(invocation.getProxy().getActionName());
    //		System.out.println(invocation.getProxy().getMethod());

    String className = invocation.getProxy().getAction().getClass().getName();
    String methodName = invocation.getProxy().getMethod();
    String allName = className + "." + methodName;
    // 获取本次操作,判断是不是EmpAction类中的login方法
    // "cn.itcast.erp.auth.emp.web.EmpAction.login"
    // 0.如果是登陆操作,放行

    String operName = invocation.getProxy().getActionName(); // page_login
    // 放行登陆页操作
    if ("page_login".equals(operName)) {
      // 跳转到登陆页面,放行
      return invocation.invoke();
    }

    if ("cn.itcast.erp.auth.emp.web.EmpAction.login".equals(allName)) {
      return invocation.invoke();
    }

    // 1.获取登陆人信息
    EmpModel loginEm =
        (EmpModel) ActionContext.getContext().getSession().get(EmpModel.LOGIN_EMP_INFO);
    // 2.判断是否登陆,如果没有登陆,返回登陆页面
    if (loginEm == null) {
      // 返回登陆页面
      return "noLogin";
    }
    // 如果登陆,放行
    return invocation.invoke();
  }
예제 #13
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 /** 每次访问Action类之前,先执行intercept方法 */
 @Override
 public String intercept(ActionInvocation invocation) throws Exception {
   // 获取当前访问Action的URL
   String actionName = invocation.getProxy().getActionName();
   // 如果当前访问Action的URL是"loginAction_login"表示此时还没有Sesion,需要放行
   if (!"loginAction_login".equals(actionName)) {
     // 从Session中获取当前用户对象
     Employee employee = SessionContext.get();
     // 如果Session不存在,跳转到登录页面
     if (employee == null) {
       return "login";
     }
   }
   // 放行,访问Action类中方法
   return invocation.invoke();
 }
  /**
   * This method will prefix <code>actionInvocation</code>'s <code>ActionProxy</code>'s <code>method
   * </code> with <code>prefixes</code> before invoking the prefixed method. Order of the <code>
   * prefixes</code> is important, as this method will return once a prefixed method is found in the
   * action class.
   *
   * <p>For example, with
   *
   * <pre>
   *   invokePrefixMethod(actionInvocation, new String[] { "prepare", "prepareDo" });
   * </pre>
   *
   * Assuming <code>actionInvocation.getProxy(),getMethod()</code> returns "submit", the order of
   * invocation would be as follows:-
   *
   * <ol>
   *   <li>prepareSubmit()
   *   <li>prepareDoSubmit()
   * </ol>
   *
   * If <code>prepareSubmit()</code> exists, it will be invoked and this method will return, <code>
   * prepareDoSubmit()</code> will NOT be invoked.
   *
   * <p>On the other hand, if <code>prepareDoSubmit()</code> does not exists, and <code>
   * prepareDoSubmit()</code> exists, it will be invoked.
   *
   * <p>If none of those two methods exists, nothing will be invoked.
   *
   * @param actionInvocation the action invocation
   * @param prefixes prefixes for method names
   * @throws InvocationTargetException is thrown if invocation of a method failed.
   * @throws IllegalAccessException is thrown if invocation of a method failed.
   */
  public static void invokePrefixMethod(ActionInvocation actionInvocation, String[] prefixes)
      throws InvocationTargetException, IllegalAccessException {
    Object action = actionInvocation.getAction();

    String methodName = actionInvocation.getProxy().getMethod();

    if (methodName == null) {
      // if null returns (possible according to the docs), use the default execute
      methodName = DEFAULT_INVOCATION_METHODNAME;
    }

    Method method = getPrefixedMethod(prefixes, methodName, action);
    if (method != null) {
      method.invoke(action, new Object[0]);
    }
  }
  @Override
  public String intercept(ActionInvocation actionInvocation) throws Exception {
    ActionConfig actionConfig = actionInvocation.getProxy().getConfig();

    final Map<String, String> staticParams = actionConfig.getParams();

    if (staticParams != null) {
      // ---------------------------------------------------------------------
      // Push the specified static parameters onto the value stack
      // ---------------------------------------------------------------------

      Map<String, Object> matches = new HashMap<>();

      for (Map.Entry<String, String> entry : staticParams.entrySet()) {
        if (standardParams.contains(entry.getKey())) {
          matches.put(entry.getKey(), entry.getValue());
        } else if (commaSeparatedParams.contains(entry.getKey())) {
          String[] values = entry.getValue().split(",");

          for (int i = 0; i < values.length; i++) {
            values[i] = values[i].trim();
          }

          matches.put(entry.getKey(), values);
        }
      }

      actionInvocation.getStack().push(matches);
    }

    // TODO: move this to its own systemInfoInterceptor?
    Map<String, Object> systemInfo = new HashMap<>();

    String revision = systemService.getSystemInfo().getRevision();

    if (StringUtils.isEmpty(revision)) {
      revision = "__dev__";
    }

    systemInfo.put("buildRevision", revision);
    actionInvocation.getStack().push(systemInfo);

    return actionInvocation.invoke();
  }
  @Override
  protected void setUp() throws Exception {
    super.setUp();
    annotationActionValidatorManager =
        (AnnotationActionValidatorManager) container.getInstance(ActionValidatorManager.class);

    ActionConfig config = new ActionConfig.Builder("packageName", "name", "").build();
    ActionInvocation invocation = EasyMock.createNiceMock(ActionInvocation.class);
    ActionProxy proxy = EasyMock.createNiceMock(ActionProxy.class);

    EasyMock.expect(invocation.getProxy()).andReturn(proxy).anyTimes();
    EasyMock.expect(invocation.getAction()).andReturn(null).anyTimes();
    EasyMock.expect(invocation.invoke()).andReturn(Action.SUCCESS).anyTimes();
    EasyMock.expect(proxy.getMethod()).andReturn("execute").anyTimes();
    EasyMock.expect(proxy.getConfig()).andReturn(config).anyTimes();

    EasyMock.replay(invocation);
    EasyMock.replay(proxy);

    ActionContext.getContext().setActionInvocation(invocation);
  }
  public String intercept(ActionInvocation invocation) throws Exception {

    RailwayNetworkManager user =
        (RailwayNetworkManager) invocation.getInvocationContext().getSession().get(USER_OBJECT);
    Object action = invocation.getAction();
    boolean annotated = action.getClass().isAnnotationPresent(MandatoryAuthentication.class);

    if (user == null
        && (annotated || mandatoryAuthentication(invocation.getProxy().getNamespace()))) {
      if (action instanceof ValidationAware) {
        String msg =
            action instanceof TextProvider
                ? ((TextProvider) action).getText(ERROR_MSG_KEY)
                : DEFAULT_MSG;
        ((ValidationAware) action).addActionError(msg);
      }
      return LOGIN_RESULT;
    } else {

    }

    return invocation.invoke();
  }
예제 #18
0
  public static String buildNamespace(
      ActionMapper mapper, ValueStack stack, HttpServletRequest request) {
    ActionContext context = new ActionContext(stack.getContext());
    ActionInvocation invocation = context.getActionInvocation();

    if (invocation == null) {
      ActionMapping mapping =
          mapper.getMapping(request, Dispatcher.getInstance().getConfigurationManager());

      if (mapping != null) {
        return mapping.getNamespace();
      } else {
        // well, if the ActionMapper can't tell us, and there is no existing action invocation,
        // let's just go with a default guess that the namespace is the last the path minus the
        // last part (/foo/bar/baz.xyz -> /foo/bar)

        String path = RequestUtils.getServletPath(request);
        return path.substring(0, path.lastIndexOf("/"));
      }
    } else {
      return invocation.getProxy().getNamespace();
    }
  }
  public String intercept(ActionInvocation invocation) throws Exception {
    ActionContext ac = invocation.getInvocationContext();

    HttpServletRequest request = (HttpServletRequest) ac.get(ServletActionContext.HTTP_REQUEST);

    if (!(request instanceof MultiPartRequestWrapper)) {
      if (LOG.isDebugEnabled()) {
        ActionProxy proxy = invocation.getProxy();
        LOG.debug(
            getTextMessage(
                "struts.messages.bypass.request",
                new String[] {proxy.getNamespace(), proxy.getActionName()}));
      }

      return invocation.invoke();
    }

    ValidationAware validation = null;

    Object action = invocation.getAction();

    if (action instanceof ValidationAware) {
      validation = (ValidationAware) action;
    }

    MultiPartRequestWrapper multiWrapper = (MultiPartRequestWrapper) request;

    if (multiWrapper.hasErrors()) {
      for (String error : multiWrapper.getErrors()) {
        if (validation != null) {
          validation.addActionError(error);
        }

        if (LOG.isWarnEnabled()) {
          LOG.warn(error);
        }
      }
    }

    // bind allowed Files
    Enumeration fileParameterNames = multiWrapper.getFileParameterNames();
    while (fileParameterNames != null && fileParameterNames.hasMoreElements()) {
      // get the value of this input tag
      String inputName = (String) fileParameterNames.nextElement();

      // get the content type
      String[] contentType = multiWrapper.getContentTypes(inputName);

      if (isNonEmpty(contentType)) {
        // get the name of the file from the input tag
        String[] fileName = multiWrapper.getFileNames(inputName);

        if (isNonEmpty(fileName)) {
          // get a File object for the uploaded File
          File[] files = multiWrapper.getFiles(inputName);
          if (files != null && files.length > 0) {
            List<File> acceptedFiles = new ArrayList<File>(files.length);
            List<String> acceptedContentTypes = new ArrayList<String>(files.length);
            List<String> acceptedFileNames = new ArrayList<String>(files.length);
            String contentTypeName = inputName + "ContentType";
            String fileNameName = inputName + "FileName";

            for (int index = 0; index < files.length; index++) {
              if (acceptFile(
                  action,
                  files[index],
                  fileName[index],
                  contentType[index],
                  inputName,
                  validation)) {
                acceptedFiles.add(files[index]);
                acceptedContentTypes.add(contentType[index]);
                acceptedFileNames.add(fileName[index]);
              }
            }

            if (!acceptedFiles.isEmpty()) {
              Map<String, Object> params = ac.getParameters();

              params.put(inputName, acceptedFiles.toArray(new File[acceptedFiles.size()]));
              params.put(
                  contentTypeName,
                  acceptedContentTypes.toArray(new String[acceptedContentTypes.size()]));
              params.put(
                  fileNameName, acceptedFileNames.toArray(new String[acceptedFileNames.size()]));
            }
          }
        } else {
          if (LOG.isWarnEnabled()) {
            LOG.warn(
                getTextMessage(action, "struts.messages.invalid.file", new String[] {inputName}));
          }
        }
      } else {
        if (LOG.isWarnEnabled()) {
          LOG.warn(
              getTextMessage(
                  action, "struts.messages.invalid.content.type", new String[] {inputName}));
        }
      }
    }

    // invoke action
    return invocation.invoke();
  }
예제 #20
0
  @Override
  public String intercept(ActionInvocation invocation) throws Exception {

    ActionConfig config = invocation.getProxy().getConfig();
    ActionContext ac = invocation.getInvocationContext();
    Object action = invocation.getAction();

    // get the action's parameters
    final Map<String, String> parameters = config.getParams();

    if (parameters.containsKey(aliasesKey)) {

      String aliasExpression = parameters.get(aliasesKey);
      ValueStack stack = ac.getValueStack();
      Object obj = stack.findValue(aliasExpression);

      if (obj != null && obj instanceof Map) {
        // get secure stack
        ValueStack newStack = valueStackFactory.createValueStack(stack);
        boolean clearableStack = newStack instanceof ClearableValueStack;
        if (clearableStack) {
          // if the stack's context can be cleared, do that to prevent OGNL
          // from having access to objects in the stack, see XW-641
          ((ClearableValueStack) newStack).clearContextValues();
          Map<String, Object> context = newStack.getContext();
          ReflectionContextState.setCreatingNullObjects(context, true);
          ReflectionContextState.setDenyMethodExecution(context, true);
          ReflectionContextState.setReportingConversionErrors(context, true);

          // keep locale from original context
          context.put(ActionContext.LOCALE, stack.getContext().get(ActionContext.LOCALE));
        }

        // override
        Map aliases = (Map) obj;
        for (Object o : aliases.entrySet()) {
          Map.Entry entry = (Map.Entry) o;
          String name = entry.getKey().toString();
          String alias = (String) entry.getValue();
          Object value = stack.findValue(name);
          if (null == value) {
            // workaround
            Map<String, Object> contextParameters = ActionContext.getContext().getParameters();

            if (null != contextParameters) {
              value = contextParameters.get(name);
            }
          }
          if (null != value) {
            try {
              newStack.setValue(alias, value);
            } catch (RuntimeException e) {
              if (devMode) {
                String developerNotification =
                    LocalizedTextUtil.findText(
                        ParametersInterceptor.class,
                        "devmode.notification",
                        ActionContext.getContext().getLocale(),
                        "Developer Notification:\n{0}",
                        new Object[] {
                          "Unexpected Exception caught setting '"
                              + entry.getKey()
                              + "' on '"
                              + action.getClass()
                              + ": "
                              + e.getMessage()
                        });
                LOG.error(developerNotification);
                if (action instanceof ValidationAware) {
                  ((ValidationAware) action).addActionMessage(developerNotification);
                }
              }
            }
          }
        }

        if (clearableStack && (stack.getContext() != null) && (newStack.getContext() != null))
          stack
              .getContext()
              .put(
                  ActionContext.CONVERSION_ERRORS,
                  newStack.getContext().get(ActionContext.CONVERSION_ERRORS));
      } else {
        LOG.debug("invalid alias expression:" + aliasesKey);
      }
    }

    return invocation.invoke();
  }