Spring MVC – Ejemplo de un CRUD en SpringMVC 4.0.1, JdbcTemplate , MySql y Netbeans 8.2 – Página 6

4.4 Controlador ArticulosController.java

Actualizar applicationContext.xml

<?xml version=\'1.0\' encoding=\'UTF-8\' ?>
<!-- was: <?xml version=\"1.0\" encoding=\"UTF-8\"?> -->
<beans xmlns=\"http://www.springframework.org/schema/beans\"
       xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
       xmlns:p=\"http://www.springframework.org/schema/p\"
       xmlns:aop=\"http://www.springframework.org/schema/aop\"
       xmlns:tx=\"http://www.springframework.org/schema/tx\"
       xmlns:context=\"http://www.springframework.org/schema/context\"       
       xsi:schemaLocation=\"http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
\">
    <context:annotation-config />
     <bean id=\"crudDS\"
          class=\"org.springframework.jdbc.datasource.DriverManagerDataSource\"
          p:driverClassName=\"com.mysql.jdbc.Driver\"
          p:url=\"jdbc:mysql://localhost:3306/crud?zeroDateTimeBehavior=convertToNull\"
          p:username=\"root\"
          p:password=\"\" />
    <bean id = \"jdbcTmpl\" class=\"org.springframework.jdbc.core.JdbcTemplate\">
        <property name=\"dataSource\" ref = \"crudDS\" />
    </bean>
    <bean id = \"articulosDao\" class = \"crud.model.ArticulosDao\">
        <property name=\"jdbcTmpl\" ref = \"jdbcTmpl\" />
    </bean>
   
</beans>

Actualizar dispatcher-servlet.xml

Para que Spring reconozca las clases con anotaciones de forma automática, se debe agregar <context:component-scan base-package=\»\» /> en

<?xml version=\'1.0\' encoding=\'UTF-8\' ?>
<!-- was: <?xml version=\"1.0\" encoding=\"UTF-8\"?> -->
<beans xmlns=\"http://www.springframework.org/schema/beans\"
       xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
       xmlns:p=\"http://www.springframework.org/schema/p\"
       xmlns:aop=\"http://www.springframework.org/schema/aop\"
       xmlns:tx=\"http://www.springframework.org/schema/tx\"
xmlns:context=\"http://www.springframework.org/schema/context\"  
       xsi:schemaLocation=\"http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
\">
    
    <context:component-scan base-package=\"crud.controller\" />
    
    <bean class=\"org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping\"/>
    <bean id=\"urlMapping\" class=\"org.springframework.web.servlet.handler.SimpleUrlHandlerMapping\">
        <property name=\"mappings\">
            <props>
                <prop key=\"index.htm\">indexController</prop>
            </props>
        </property>
    </bean>
    <bean id=\"viewResolver\"
          class=\"org.springframework.web.servlet.view.InternalResourceViewResolver\"
          p:prefix=\"/WEB-INF/jsp/\"
          p:suffix=\".jsp\" />
    <bean name=\"indexController\"
          class=\"org.springframework.web.servlet.mvc.ParameterizableViewController\"
          p:viewName=\"index\" />
</beans>

ArticulosController.java

package crud.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import crud.model.Articulo;
import crud.model.ArticulosDao;

@Controller
public class ArticulosController {
    @Autowired
    ArticulosDao dao;
    
    //-- Listar los artículos (Grid)
    @RequestMapping(value = \"/lista\")
    public String articuloview(Model m){
        System.out.println(\"*** ArticulosController.articuloview\" );
        List<Articulo> list = dao.getArticulos();
        m.addAttribute(\"list\", list);
        return \"articulosGrid\";
    }
    
    @RequestMapping(value = \"/nuevo\")
    public String showForm( Model m){
        System.out.println(\"*** ArticulosController.showForm\" );
        m.addAttribute(\"command\", new Articulo() );
        return \"articuloNewForm\";
    }
    
    @RequestMapping(value = \"/guardar\", method= RequestMethod.POST)
    public String guardar( @ModelAttribute(\"articulo\") Articulo articulo ){
        System.out.println(\"*** ArticulosController.guardar\" );
        dao.guardar(articulo);
        return \"redirect:lista.htm\";
    }
    
    @RequestMapping(value = \"/editar\", method = RequestMethod.GET)
    public String actualiza (@RequestParam(value = \"id\", required = true) int id, Model m){
        System.out.println(\"*** ArticulosController.actualiza id=\" + id);
        Articulo articulo = dao.getArticuloById( id);
        m.addAttribute(\"command\", articulo);
        return \"articuloEditForm\";
    }

    @RequestMapping( value = \"/actualizar\", method = RequestMethod.POST)
    public String editsave( @ModelAttribute(\"articulo\") Articulo articulo) {
        System.out.println(\"*** ArticulosController.editsave \" );
        dao.actualiza(articulo);
        return \"redirect:lista.htm\";
    }
    
    @RequestMapping( value = \"/borrar\", method = RequestMethod.GET)
    public String borrar( @RequestParam(value = \"id\", required = true)int id) {
        System.out.println(\"*** ArticulosController.borrar id=\" + id );
        dao.borrar(id);
        return \"redirect:lista.htm\";
    }
}

4.5 Vistas JSP

4.5.1 Vista para listar los artículos articulosGrid.jsp

<%@page contentType=\"text/html\" pageEncoding=\"UTF-8\"%>
<%@ taglib uri=\"http://www.springframework.org/tags/form\" prefix=\"form\"%>    
<%@ taglib uri=\"http://java.sun.com/jsp/jstl/core\" prefix=\"c\"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">
        <title>Artículos View</title>
    </head>
    <body>
        <h1>Lista de Artículos!</h1>
        <table border=\"2\" width=\"70%\" cellpadding=\"2\">  
            <tr>
                <th>Id</th>
                <th>Nombre</th>
                <th>Clave</th>
                <th>Descripción</th>
                <th>Marca</th>
                <th>Editar</th>
                <th>Borrar</th>
            </tr>  
            <c:forEach var=\"art\" items=\"${list}\">   
            <tr>  
                <td>${art.idArticulo}</td>  
                <td>${art.nombre}</td>  
                <td>${art.cveArticulo}</td>  
                <td>${art.descripcion}</td>  
                <td>${art.marca}</td>  
                <td><a href=\"editar.htm?id=${art.idArticulo}\">Editar</a></td>  
                <td><a href=\"borrar.htm?id=${art.idArticulo}\">Borrar</a></td>  
            </tr>  
            </c:forEach>  
        </table>  
        <br/>  
        <a href=\"nuevo.htm\">Agregar artículo</a>  
    </body>
</html>

Abrir el listado en el navegador

http://localhost:8080/HolaCrud/articulos/lista.htm

4.5.2 Vista para agregar un nuevo artículo articuloNewForm.jsp

<%@ taglib uri=\"http://www.springframework.org/tags/form\" prefix=\"form\"%>    
<%@ taglib uri=\"http://java.sun.com/jsp/jstl/core\" prefix=\"c\"%>   
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">
        <title>Agregar Artículo</title>
    </head>
    <body>
        <h1>Agregar Artículo!</h1>
        <form:form method=\"post\" action=\"guardar.htm\">    
            <table >    
                <tr>    
                    <td>Clave : </td>   
                    <td><form:input path=\"cveArticulo\"  /></td>  
                </tr>    
                <tr>    
                    <td>Nombre :</td>    
                    <td><form:input path=\"nombre\" /></td>  
                </tr>   
                <tr>    
                    <td>Descripción :</td>    
                    <td><form:input path=\"descripcion\" /></td>  
                </tr>   
                <tr>    
                    <td>Marca :</td>    
                    <td><form:input path=\"marca\" /></td>  
                </tr>   
                <tr>    
                    <td> </td>    
                    <td><input type=\"submit\" value=\"Guardar\" /></td>    
                </tr>    
            </table>    
        </form:form>    
    </body>
</html>

4.5.3 Vista para editar un artículo articuloEditForm.jsp

<%@ taglib uri=\"http://www.springframework.org/tags/form\" prefix=\"form\"%>    
<%@ taglib uri=\"http://java.sun.com/jsp/jstl/core\" prefix=\"c\"%>    
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">
        <title>Formulario Editar Articulo</title>
    </head>
    <body> 
        <h1>Formulario Editar Artículo!</h1>
        <form:form method=\"post\" action=\"actualizar.htm\">    
            <table >    
                <tr>    
                    <td>Clave : </td>   
                    <td><form:hidden  path=\"idArticulo\" />
                        <form:input path=\"cveArticulo\"  /></td>  
                </tr>    
                <tr>    
                    <td>Nombre :</td>    
                    <td><form:input path=\"nombre\" /></td>  
                </tr>   
                <tr>    
                    <td>Descripción :</td>    
                    <td><form:input path=\"descripcion\" /></td>  
                </tr>   
                <tr>    
                    <td>Marca :</td>    
                    <td><form:input path=\"marca\" /></td>  
                </tr>   
                <tr>    
                    <td> </td>    
                    <td><input type=\"submit\" value=\"Actualizar\" /></td>    
                </tr>    
            </table>    
        </form:form>  
    </body>
</html>

4.5.4 Modificar la página de inicio del proyecto redirect.jsp

<%@page contentType=\"text/html\" pageEncoding=\"UTF-8\"%>
<% response.sendRedirect(\"articulos/lista.htm\"); %>

Descargar el código fuente

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