I was able to configure my application again following the advice of user2821894, but after trying to call the servlet tomcat 7 stopped working again !! If I try to remove the code in which I call my servlet, my web application doesent 'work !! As soon as I have a problem with the servlet, tomcat stops working.
I had a problem running my web project in eclipse. I had a problem with Tomcat 7. So I 'delete' tomcat 7 from eclipse and then add it again (again tomcat 7).
now I have no problems running my web project, but I have problems with my servlet. For example, I get an error, for example
WebServlet cannot be resolved to a type The attribute value is undefined for the annotation type
I added servlet-api 3.0.jar to my project, but I still have these problems.
This is the code for my servlet
package Jeans; import java.io.IOException; import java.io.InputStream; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.annotation.WebServlet; import com.sun.java.swing.plaf.windows.TMSchema.Part; import javax.servlet.http.Part; @WebServlet("/FileUploadDBServlet ") //// i got an error here//////////////////////////// @MultipartConfig(maxFileSize = 16177215) public class FileUploadDBServlet extends HttpServlet { private String dbURL = "db"; private String dbUser = "dbuser"; private String dbPass = "dbpassword"; String messageMio = "da contorllare"; GestioneDB gestioneDB; boolean connessione; Connection conn; protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String giorno= request.getParameter("giorno"); String mese= request.getParameter("mese"); String anno= request.getParameter("anno"); String dataFormatoItaliano = giorno + "-" + mese + "-" + anno; String titolo = request.getParameter("titolo"); String titoletto = request.getParameter("titoletto"); String testoMouse = request.getParameter("testoMouse"); String link = request.getParameter("link"); String data = dataFormatoItaliano; String testo = request.getParameter("testo"); //// i got an error here//////////////////////////// Part filePart = request.getPart("immaginePrincipale"); String didascaliaImmaginePrincipale = request.getParameter("didascaliaImmaginePrincipale"); InputStream immaginePrincipale = null; if (filePart != null) { // obtains input stream of the upload file immaginePrincipale = filePart.getInputStream(); } String message = null; try { gestioneDB = new GestioneDB(); conn = gestioneDB.cn(); gestioneDB.inserimentoNews(titolo, titoletto, testoMouse, link, testo, data, immaginePrincipale, didascaliaImmaginePrincipale); String sql = "INSERT INTO allegati_news (allegato,didascalia,tipo,id_news,immagine) values (?,?,?,?,?)"; PreparedStatement statement = conn.prepareStatement(sql); statement.setString(1, "firstName"); statement.setString(2, "lastName"); statement.setInt(3, 1); statement.setInt(4,1); if (immaginePrincipale != null) { statement.setBlob(5, immaginePrincipale); } int row = statement.executeUpdate(); if (row > 0) { message = "File salvato nel db"; } } catch (SQLException ex) { message = "ERROR: " + ex.getMessage(); ex.printStackTrace(); } finally { if (conn != null) { try { conn.close(); } catch (SQLException ex) { ex.printStackTrace(); } } request.setAttribute("Message", gestioneDB.getInserimentoNewMessaggio()); getServletContext().getRequestDispatcher("/Message.jsp").forward(request, response); } } }
This is my web.xml file
<?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>Jeans2</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <description></description> <display-name>prova</display-name> <servlet-name>prova</servlet-name> <servlet-class>Jeans.prova</servlet-class> </servlet> <servlet-mapping> <servlet-name>prova</servlet-name> <url-pattern>/prova</url-pattern> </servlet-mapping> <servlet> <description></description> <display-name>FileUploadDBServlet</display-name> <servlet-name>FileUploadDBServlet</servlet-name> <servlet-class>Jeans.FileUploadDBServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>FileUploadDBServlet</servlet-name> <url-pattern>/FileUploadDBServlet</url-pattern> </servlet-mapping> <servlet> <description></description> <display-name>BlobDisplay</display-name> <servlet-name>BlobDisplay</servlet-name> <servlet-class>Jeans.BlobDisplay</servlet-class> </servlet> <servlet-mapping> <servlet-name>BlobDisplay</servlet-name> <url-pattern>/BlobDisplay</url-pattern> </servlet-mapping> </web-app>