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Thread: doGet and doPost not supported in URL

  1. #1
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    Default doGet and doPost not supported in URL

    For a code I am working on I'm using servlets with jsp. In the servlets I have doPost and doGet with certain servlets that I want to get something on the server or to add it. In the jsp I have the method of post and get in the form. Each time I run my code I cannot get anything that is on the server, i get an error saying http get method not supported on the server same with post. Can someone look at the code and see if there is anything missing. I have been looking at this for many times and I cannot get it to work. Here is some of my servlets and jsps:

    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    public class AddTagServlet extends HttpServlet{
     
    	private static final long serialVersionUID = 1L;
     
    	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
     
    		boolean isSuccess= false;
     
            String isbn13 = request.getParameter("isbn13");
            Tag tag = new Tag();
     
            tag.setIsbn13(isbn13);
            tag.settag(request.getParameter("tag"));
     
            TagDAO tagdao = DAOUtilities.getTagDAO();
            isSuccess = tagdao.addtag(tag);
     
            if(isSuccess){
                request.getSession().setAttribute("message", "Tag successfully added");
                request.getSession().setAttribute("messageClass", "alert-success");
                response.sendRedirect(request.getContextPath() + "/ViewBookDetails?isbn13=" + isbn13);
            } else {
                request.getSession().setAttribute("message", "There was a problem updating this tag");
                request.getSession().setAttribute("messageClass", "alert-danger");
                request.getRequestDispatcher("bookDetails.jsp").forward(request, response);
            }
        }
     
    }
     
     
    public class BookPublishingServlet extends HttpServlet {
     
    	private static final long serialVersionUID = 1L;
     
    	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
     
    		// Grab the list of Books from the Database
    		BookDAO dao = DAOUtilities.getBookDAO();
    		List<Book> bookList = dao.getAllBooks();
     
    		// Grab the list of Book tags from the Database
    		TagDAO tagdao = DAOUtilities.getTagDAO();
    		List<Tag> tagList = tagdao.getAllTags();
     
     
    		// Populate the list into a variable that will be stored in the session
    		request.getSession().setAttribute("books", bookList);
    		request.getSession().setAttribute("tags", tagList);
     
    		request.getRequestDispatcher("bookPublishingHome.jsp").forward(request, response);
    	}
    }
     
     
     
    <section class="success">
    	  <div class="container">
     
    		<h1><small>Add Tag</small></h1>
     
    		<form action="AddTag" method="post" class="form-horizontal">
     
    		  <input type="hidden" class="form-control" id="isbn13" name="isbn13" placeholder="ISBN 13" required="required" value="${book.isbn13}" />
     
    		  <div class="form-group">
    		    <label for="tag" class="col-sm-4 control-label">Tag</label>
    		    <div class="col-sm-5">
    		      <input type="text" class="form-control" id="tag" name="tag" placeholder="Tag" required="required" />
    		    </div>
    		  </div>
    		  <div class="form-group">
    		    <div id="popover-bookpub-addtag" class="col-sm-offset-4 col-sm-1">
    		      <button type="submit" class="btn btn-info">Add Tag</button>
    		    </div>
    		  </div>
    		</form>  </div>
     
     
    <td><c:out value="${book.isbn13}" /></td>
    						<td><c:out value="${book.title}" /></td>
    						<td><c:out value="${book.author}" /></td>
    						<td><c:out value="${book.publishDate}" /></td>
    						<td><fmt:formatNumber value="${book.price }" type="CURRENCY"/></td>
    						<td><form action="DownloadBook" method="get">
    								<input type="hidden" name="isbn13" value="${book.isbn13}">
    								<button class="btn btn-success">Download</button>
    							</form></td>

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: doGet and doPost not supported in URL

    What software runs on the server?
    Are there any configuration steps that need to be taken? For example on Tomcat there needs to be entries in the web.xml file.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: doGet and doPost not supported in URL

    I am using wildfly 19. I tried to add the servlet mapping and servlet classes on the web.xml but that didn't do anything different. But other than that I haven't tried anything else on the web.xml

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: doGet and doPost not supported in URL

    Look at some working samples and copy the placement and logic they use.
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: doGet and doPost not supported in URL

    I was able to get the doGet to work, I'm still having trouble with the doPost. I will look at examples and see if they can help. Thank you! 😊

  6. #6
    Super Moderator Norm's Avatar
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    Default Re: doGet and doPost not supported in URL

    What did you do to get the GET to work? Can you post the details so others can benefit?
    If you don't understand my answer, don't ignore it, ask a question.

  7. #7
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    Default Re: doGet and doPost not supported in URL

    All I did was run my DAOs after connecting them to my sql. I didn't do anything different to the code, so the method for get was correct for my code.

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