I am working on application with jsp, jstl and jsf for my college project, thats being said, I am as well very new to jsf.
Everything is going great so far. However, I seems to have a problem figuring out how to do redirect from managed bean to page with dinamyc parameters.
For example article.jsp?article_id=2
Can somebody tell me how it is done ?
I been trying to use somethinng like
FacesContext.getCurrentInstance().getExternalContext().dispatch("faces/article.jsp2?article_id=" + articleId);
But get error:
javax.servlet.ServletException: #{postComment.postClick}: javax.faces.FacesException: javax.servlet.ServletException: javax.faces.component.UIViewRoot cannot be cast to com.sun.faces.application.StateManagerImpl$TreeNode
javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
I been trying to use
response.sendRedirect("faces/article.jsp2?article_id=" + articleId);
return;
But again getting an error.
javax.servlet.ServletException: Cannot forward after response has been committed
javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
Can somebody please tell me how do i redirect from managed java bean when working with jsf ?
Bellow is my code (maybe something wrong with that and thats why redirect not working).
HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
String articleId = request.getSession().getAttribute("article_id").toString();
//String articleId = request.getParameter("article_id");
String authorName = request.getSession().getAttribute("user_name").toString();
java.util.Calendar calendar = java.util.Calendar.getInstance();
String commentDate = String.valueOf(calendar.get(java.util.Calendar.DAY_OF_MONTH)) + ".";
commentDate += String.valueOf(calendar.get(java.util.Calendar.MONTH)) + ".";
commentDate += String.valueOf(calendar.get(java.util.Calendar.YEAR));
ArrayList error = new ArrayList();
if(commentName.contains("<"))
{
error.add("Comment name contains illegal characters");
}
if(commentBody.isEmpty() && commentBody.contains("<script"))
{
error.add("Your message body contains illegal characters");
}
if(error.size() > 0)
{
request.getSession().setAttribute("error", error);
error.clear();
FacesContext.getCurrentInstance().getExternalContext().dispatch("article.jsp2?article_id=" + articleId);
}
else
{
Comment comment = new Comment();
comment.setCommentAuthor(authorName);
comment.setCommentBody(commentBody);
comment.setCommentDate(commentDate);
comment.setCommentName(commentName);
comment.setArticleId(articleId);
DisplayArticleIO addComment = new DisplayArticleIO();
addComment.postComment(comment);
// FacesContext.getCurrentInstance().getExternalContext().dispatch("faces/article.jsp2?article_id=" + articleId);
response.sendRedirect("faces/article.jsp2?article_id=" + articleId);
return;
}
Thank you in advance.
Best Answer
In case some one will run into same problem.
That's what solved my problem: