NoClassDefFoundError: org/springframework/jdbc/core/RowMapper

Question

Je crée une application Web simple et j'ai décidé d'utiliser une classe Spring JdbcTemplate. Mais maintenant je rencontre le NoClassDefFoundError: org/springframework/jdbc/core/RowMapper.

Selon quelque chose de trace de la pile est mal avec ControllerServlet en ligne 32. Ce qui est:

productDAOImpl = new ProductDAOImpl(dataSource); 

Quelle peut être la raison de l'erreur? Que dois-je faire pour le réparer?

Context Path:/webstore_war_exploded 
Servlet Path:/ControllerServlet 
Path Info:null 
Query String:null 
Stack Trace 
java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper 
com.ncproject.webstore.controller.ControllerServlet.init(ControllerServlet.java:32) 
javax.servlet.GenericServlet.init(GenericServlet.java:244) 
io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117) 
org.wildfly.extension.undertow.security.RunAsLifecycleInterceptor.init(RunAsLifecycleInterceptor.java:78) 
io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:103) 
io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:250) 
io.undertow.servlet.core.ManagedServlet.getServlet(ManagedServlet.java:171) 
io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:84) 
io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) 
io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) 
org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) 
io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) 
io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) 
io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) 
io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) 
io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) 
io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292) 
io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81) 
io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138) 
io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) 
io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) 
io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) 
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44) 
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44) 
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44) 
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44) 
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44) 
io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272) 
io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) 
io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104) 
io.undertow.server.Connectors.executeRootHandler(Connectors.java:202) 
io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:805) 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
java.lang.Thread.run(Thread.java:745) 

ControllerServlet.java

@WebServlet("/ControllerServlet") 
public class ControllerServlet extends HttpServlet { 
private static final long serialVersionUID = 1L; 

private ProductDAOImpl productDAOImpl; 

@Resource(lookup = "java:/PostgresNC") 
private DataSource dataSource; 


@Override 
public void init() throws ServletException { 
    super.init(); 
    try { 
     productDAOImpl = new ProductDAOImpl(dataSource); 
    } catch (Exception exc) { 
     throw new ServletException(exc); 
    } 
} 

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
    try { 
     String theCommand = request.getParameter("command"); 

     if (theCommand == null) { 
      theCommand = "PRODUCT_LIST"; 
     } 

     switch (theCommand) { 
      case "PRODUCT_LIST": 
       listProducts(request, response); 
       break; 
      case "ADD_UPDATE": 
       addOrUpdateProduct(request, response); 
       break; 
      default: 
       listProducts(request, response); 
     } 

    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
} 

private void listProducts(HttpServletRequest request, HttpServletResponse response) throws Exception { 

    List<Product> products = productDAOImpl.getAllProducts(); 

    request.setAttribute("PRODUCT_LIST", products); 

    RequestDispatcher dispatcher = request.getRequestDispatcher("/list-products.jsp"); 
    dispatcher.forward(request, response); 
} 

private void addOrUpdateProduct(HttpServletRequest request, HttpServletResponse response) throws Exception { 
    // read product from the form 
    String idString = request.getParameter("productId"); 
    String category = request.getParameter("category"); 
    String description = request.getParameter("description"); 
    String productName = request.getParameter("productName"); 
    String price = request.getParameter("price"); 
    BigDecimal priceBigDecimal = new BigDecimal(price); 
    String brand = request.getParameter("brand"); 

    try { 
     int id = Integer.parseInt(idString.trim()); 
     int numCategory = Integer.parseInt(category); 

     if(idString != null && category != null) { 

      Product theProduct = new Product(id, numCategory, description, productName, priceBigDecimal, brand); 

      // add the product to the database 
      productDAOImpl.saveOrUpdate(theProduct); 
     } 
    } 
    catch(NumberFormatException nfe) { 
     nfe.printStackTrace(); 
    } 

    listProducts(request, response); 
} 

ProductDAOImpl.java

public class ProductDAOImpl implements ProductDAO { 
private JdbcTemplate jdbcTemplate; 

//private DataSource dataSource; 

public ProductDAOImpl(DataSource dataSource) { 
    jdbcTemplate = new JdbcTemplate(dataSource); 
} 

@Override 
public List<Product> getAllProducts() { 
    String sql = "SELECT * FROM products ORDER BY prod_id\n" + 
      "ASC"; 
    List<Product> productList = jdbcTemplate.query(sql, new RowMapper<Product>() { 
     @Override 
     public Product mapRow(ResultSet resultSet, int rowNum) throws SQLException { 
      Product theProduct = new Product(); 

      theProduct.setProd_id(resultSet.getInt("prod_id")); 
      theProduct.setCategory(resultSet.getInt("category")); 
      theProduct.setDescription(resultSet.getString("description")); 
      theProduct.setProductName(resultSet.getString("productName")); 
      theProduct.setPrice(resultSet.getBigDecimal("price")); 
      theProduct.setBrand("brand"); 

      return theProduct; 
     } 
    }); 
    return productList; 
} 

@Override 
public void saveOrUpdate(Product newProduct) { 
    if (newProduct.getProd_id() > 0) { 
     // update 
     String sql = "UPDATE products " 
       + "SET category=?, description=?, prod_name=?, price=?, brand=? " 
       + "WHERE prod_id=?"; 

     jdbcTemplate.update(sql, newProduct.getCategory(), newProduct.getDescription(), 
       newProduct.getProductName(), newProduct.getPrice(), newProduct.getBrand()); 
    } else { 
     // insert 
     String sql = "INSERT INTO products (prod_id, category, description, prod_name, price, brand) " 
       + "VALUES (?, ?, ?, ?, ?, ?)"; 

     jdbcTemplate.update(sql, newProduct.getProd_id(), newProduct.getCategory(), newProduct.getDescription(), 
       newProduct.getProductName(), newProduct.getPrice(), newProduct.getBrand()); 
    } 
} } 

Answer 1

Le fichier JAR requis ne sont pas disponibles, ce que vous devez faire est de placer sur votre CLASSPATH. Vous pouvez choisir d'ajouter le fichier JAR correspondant à votre CLASSPATH, ou à titre d'alternative, vous pouvez télécharger le fichier JAR à partir de here.

Une question similaire sur le même sujet, pour votre référence est here et here.