Roman C. Please see my most recent comment.
---Original message follows---
There are MANY questions and answers about "Response already committed", but I don't find any related to my issue; specifically my application does not touch the ServletResponse.
I have a Struts2/Tiles2 application running on WebLogic 10.3.0 with 2 Interceptors,
- AuthenticationInterceptor ensures the user is logged in and has a role which allows access to the app.
- AgreementInterceptor presents a user agreement page.
This interceptor pair works in all scenarios on my Windows laptop running WebLogic 10.3.0.
However, on our clustered server running on Linux I get "IllegalStateException: Response already committed" when a user who needs to accept the user agreement logs in. The error occurs when control returns to the AuthenticationInterceptor.
Users who do not need to accept the agreement, either because they have a role that is perpetually authorized or because they have an active acceptance, do not get this error.
The difference is that when the agreement is required then the Interceptor chain is ended by the AgreementInterceptor returning "agreement" instead of returning the result from ActionInvocation.invoke().
struts.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<!-- Struts 2.3.34 with Tiles 2.2.2 -->
<struts>
<constant name="struts.action.extension" value="action"/>
<constant name="struts.configuration.xml.reload" value="true"/>
<constant name="struts.custom.i18n.resources" value="i18n.layout,i18n.systemError"/>
<constant name="struts.devMode" value="true"/>
<constant name="struts.mapper.action.prefix.enabled" value="true"/>
<constant name="struts.mapper.action.prefix.crossNamespaces" value="false"/>
<constant name="struts.ui.theme" value="simple"/>
<package name="app-name" namespace="/" extends="json-default">
<result-types>
<result-type name="tiles" class="org.apache.struts2.views.tiles.TilesResult"/>
</result-types>
<interceptors>
<interceptor name="app-user-auth" class="com.domain.app.interceptor.AuthenticationInterceptor"/>
<interceptor name="agreement" class="com.domain.app.interceptor.AgreementInterceptor"/>
<interceptor-stack name="main-stack">
<interceptor-ref name="jsonValidationWorkflowStack"/>
<interceptor-ref name="defaultStack"/>
<interceptor-ref name="app-user-auth"/>
</interceptor-stack>
<interceptor-stack name="second-stack">
<interceptor-ref name="main-stack"/>
<interceptor-ref name="agreement"/>
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="main-stack"/>
<default-action-ref name="home_execute"/>
<global-results>
<result name="error">/public/jsp/systemError.jsp</result>
<result name="denied">/public/jsp/accessDenied.jsp</result>
</global-results>
<global-exception-mappings>
<exception-mapping result="error" exception="java.lang.Exception"/>
</global-exception-mappings>
<action name="home_*" method="{1}" class="com.domain.app.action.HomeAction">
<interceptor-ref name="second-stack"/>
<result name="success">/home.jsp</result>
<result name="results" type="json"/>
<result name="agreement" type="redirectAction">
<param name="actionName">agreement_execute</param>
</result>
</action>
<action name="agreement_*" method="{1}" class="com.domain.app.action.AgreementAction">
<result name="success">/agreement.jsp</result>
<result name="accepted" type="redirectAction">
<param name="actionName">home_execute</param>
</result>
</action>
...
</package>
</struts>
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>AppName</display-name>
<context-param>
<param-name>org.apache.tiles.impl.BasicTilesContainer.DEFINITIONS_CONFIG</param-name>
<param-value>/WEB-INF/config/tiles-def.xml</param-value>
</context-param>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>actionPackages</param-name>
<param-value>com.domain.app.action</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class>
</listener>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
...
</web-app>
AuthenticationInterceptor.java:
public String intercept(ActionInvocation actionInvocation) throws Exception {
Logger.debug(this, "intercept: Begin");
boolean debug = Logger.canLogDebug(this);
Map<String, Object> session = actionInvocation.getInvocationContext().getSession();
User user = (User) session.get(Constants.SESSION_USER);
if (user == null) {
//This is the first time they are accessing the app.
//Need to lookup the user and check functional entitlements.
String employeeId = ServletActionContext.getRequest().getHeader(Constants.EMPLOYEE_ID);
if (StringUtils.isNullOrEmpty(employeeId)) {
Logger.warn(this, "No Employee ID in headers, access denied");
return "denied";
}
try {
Logger.debug(this, "Looking up User with employeeId " + employeeId);
user = userDelegate.getUser(employeeId);
} catch( Exception e) {
Logger.error(this, "Exception looking up User with employeeId " + employeeId, e);
return Action.ERROR;
}
if (user == null) {
Logger.error(this, "User with employeeId " + employeeId + " was not found.");
return "denied";
}
boolean hasFunction = false;
for (FunctionalEntitlement function : FunctionalEntitlement.values()) {
if (user.hasFunction(function)) {
hasFunction = true;
break;
}
}
if (!hasFunction) {
Logger.warn(this, "User " + employeeId +
" attempted to access App without an appropriate role.");
return "denied";
}
session.put(Constants.SESSION_USER, user);
}
Action action = (Action)actionInvocation.getAction();
if (action instanceof UserAware) {
if (debug) {
Logger.debug(this,
"Injecting user on the UserAware Action " +
action.getClass().getSimpleName());
}
((UserAware)action).setUser(user);
}
if (debug) {
Logger.debug(this,
"calling ActionInvocation.invoke() for " +
actionInvocation.getClass().getSimpleName());
}
String result = actionInvocation.invoke(); //****Line 156****
if (debug) {
Logger.debug(this, "ActionInvocation resultCode = " + actionInvocation.getResultCode());
Logger.debug(this, "returning \"" + result + "\"");
Logger.debug(this, "intercept: End");
}
return result;
}
AgreementInterceptor.java:
private static final int DEFAULT_EXPIRE_DAYS = 182;
private static final List<String> requiresAgreement;
private static final Map<String, String> agreementUrls = new HashMap<String, String>();
private static final Map<String, Integer> agreementExpireDays = new HashMap<String, Integer>();
...
public String intercept(ActionInvocation actionInvocation) throws Exception {
Logger.debug(this, "intercept: Begin");
boolean debug = Logger.canLogDebug(this);
Map<String, Object> session = actionInvocation.getInvocationContext().getSession();
Boolean agreementAccepted = (Boolean)session.get(Constants.AGREEMENT_ACCEPTED_OR_NOT_NEEDED);
if (agreementAccepted != null && agreementAccepted) {
if (debug) {
Logger.debug(this,
"calling (1) ActionInvocation.invoke() for " +
actionInvocation.getClass().getSimpleName());
}
String result = actionInvocation.invoke();
if (debug) {
Logger.debug(this, "User agreement previously accepted or not required");
Logger.debug(this, "ActionInvocation resultCode = " + actionInvocation.getResultCode());
Logger.debug(this, "returning \"" + result + "\"");
Logger.debug(this, "intercept: End");
}
return result;
}
User user = (User) session.get(Constants.SESSION_USER);
Role[] userRoles = user.getAllRoles();
rolechk:
for (Role role : userRoles) {
String roleCode = role.getRoleType();
if (requiresAgreement.contains(roleCode)) {
if (debug) {
Logger.debug(this, "Role " + roleCode + " requires a user agreement");
Logger.debug(this, "Checking last agreement acceptance date");
}
Integer numDays = agreementExpireDays.get(roleCode);
if (numDays == null) {
Logger.error(this,
"intercept: No expire days for role code " +
roleCode + ", defaulting to " + DEFAULT_EXPIRE_DAYS);
numDays = DEFAULT_EXPIRE_DAYS;
}
for (DynamicAttribute attr : user.getDynamicAttributes()) {
if (Constants.APP_AGREEMENT_DATE_TYPE.equals(attr.getAttrType())) {
Calendar currDate = Calendar.getInstance();
Calendar acceptDate = null;
String acceptDateStr = attr.getAttrValuesAsList().get(0);
if (StringUtils.isNullOrEmpty(acceptDateStr)) {
// Treat this situation as if the agreement was never accepted
Logger.error(this,
Constants.APP_AGREEMENT_DATE_TYPE +
" dynamic attribute not set for user " + user.getEmployeeId());
// Invoke AccessAgreementAction
if (debug) {
Logger.debug(this, "returning \"agreement\"");
Logger.debug(this, "intercept: End");
}
return "agreement";
}
try {
acceptDate = Calendar.getInstance();
acceptDate.setTime(
Constants.AGREEMENT_DATE_FORMAT.parse(acceptDateStr));
// The user acceptance expires numDays from the date of previous
// acceptance regardless of the time of day that the acceptance
// was executed
acceptDate.set(Calendar.HOUR_OF_DAY, 0);
acceptDate.set(Calendar.MINUTE, 0);
acceptDate.set(Calendar.SECOND, 0);
acceptDate.set(Calendar.MILLISECOND, 0);
acceptDate.add(Calendar.DATE, numDays);
if (currDate.before(acceptDate)) {
if (debug) {
Logger.debug(this,
"Prior acceptance date " + acceptDateStr +
" for " + user.getEmployeeId() +
" is still valid");
}
// Agreement accepted recently, continue with action
break rolechk;
}
} catch (ParseException e) {
// Treat this situation as if the agreement was never accepted
Logger.error(this,
"Found invalid " +
Constants.APP_AGREEMENT_DATE_TYPE +
" \"" + acceptDateStr + "\" for " + user.getEmployeeId());
}
}
}
// Need user to accept App User Agreement
String agreementUrl = agreementUrls.get(roleCode);
if (StringUtils.isNullOrEmpty(agreementUrl)) {
Logger.error(this,
"No agreement URL found for role " + roleCode +
", treating as if agreement is not required");
break rolechk;
}
session.put(Constants.AGREEMENT_DOC_URL, agreementUrl);
session.put(Constants.AGREEMENT_ROLE_CODE, roleCode);
// Invoke AccessAgreementAction
if (debug) {
Logger.debug(this, "agreementUrl = " + agreementUrl);
Logger.debug(this, "roleCode = " + roleCode);
Logger.debug(this, "returning \"agreement\"");
Logger.debug(this, "intercept: End");
}
return "agreement";
}
}
// User agreement not required, or previous acceptance is still valid.
// Note that fact in the session.
session.put(Constants.AGREEMENT_ACCEPTED_OR_NOT_NEEDED, Boolean.TRUE);
if (debug) {
Logger.debug(this,
"calling (2) ActionInvocation.invoke() for " +
actionInvocation.getClass().getSimpleName());
}
String result = actionInvocation.invoke();
if (debug) {
Logger.debug(this, "ActionInvocation resultCode = " + actionInvocation.getResultCode());
Logger.debug(this, "returning \"" + result + "\"");
Logger.debug(this, "intercept: End");
}
return result;
}
Log file content:
2017-12-14 15:33:27,375|DEBUG |m.domain.app.interceptor.AuthenticationInterceptor|intercept: Begin
2017-12-14 15:33:27,375|DEBUG |m.domain.app.interceptor.AuthenticationInterceptor|Looking up user with employeeId E111385
2017-12-14 15:33:29,623|DEBUG |m.domain.app.interceptor.AuthenticationInterceptor|Injecting user on the UserAware Action com.domain.app.action.HomeAction
2017-12-14 15:33:29,623|DEBUG |m.domain.app.interceptor.AuthenticationInterceptor|calling ActionInvocation.invoke() for DefaultActionInvocation
2017-12-14 15:33:29,628|DEBUG | com.domain.app.interceptor.AgreementInterceptor|intercept: Begin
2017-12-14 15:33:29,628|DEBUG | com.domain.app.interceptor.AgreementInterceptor|Role BASIC_USER requires a user agreement
2017-12-14 15:33:29,628|DEBUG | com.domain.app.interceptor.AgreementInterceptor|Checking last agreement acceptance date
2017-12-14 15:33:29,628|DEBUG | com.domain.app.interceptor.AgreementInterceptor|agreementUrl = https://server.domain.com/userdocs/agreement.pdf
2017-12-14 15:33:29,629|DEBUG | com.domain.app.interceptor.AgreementInterceptor|roleCode = BASIC_USER
2017-12-14 15:33:29,629|DEBUG | com.domain.app.interceptor.AgreementInterceptor|returning "agreement"
2017-12-14 15:33:29,629|DEBUG | com.domain.app.interceptor.AgreementInterceptor|intercept: End
2017-12-14 15:33:29,678|ERROR | jsp_servlet._public._jsp.__systemerror|java.lang.IllegalStateException: Response already committed
at weblogic.servlet.internal.ServletResponseImpl.objectIfCommitted(ServletResponseImpl.java:1553)
at weblogic.servlet.internal.ServletResponseImpl.sendRedirect(ServletResponseImpl.java:838)
at org.apache.struts2.dispatcher.ServletRedirectResult.sendRedirect(ServletRedirectResult.java:257)
at org.apache.struts2.dispatcher.ServletRedirectResult.doExecute(ServletRedirectResult.java:229)
at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:191)
at org.apache.struts2.dispatcher.ServletRedirectResult.execute(ServletRedirectResult.java:164)
at org.apache.struts2.dispatcher.ServletActionRedirectResult.execute(ServletActionRedirectResult.java:182)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:369)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:273)
==> at com.domain.app.interceptor.AuthenticationInterceptor.intercept(AuthenticationInterceptor.java:156)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.json.JSONValidationInterceptor.doIntercept(JSONValidationInterceptor.java:116)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.components.ActionComponent.executeAction(ActionComponent.java:288)
at org.apache.struts2.components.ActionComponent.end(ActionComponent.java:172)
at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:43)
at jsp_servlet.__index._jsp__tag0(__index.java:106)
at jsp_servlet.__index._jspService(__index.java:70)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:35)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.ServletStubImpl.onAddToMapException(ServletStubImpl.java:409)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:318)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:43)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:43)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
2017-12-14 15:33:29,678|ERROR | jsp_servlet._public._jsp.__systemerror|Response already committed