스프링 tutorial (8)

웹 어플리케이션의 persistence Layer의 통합

 

1.      Service layer의 수정

 

src/springapp/service/SimpleProductManager.java

 

package springapp.service;
 
import java.util.List;
 
import springapp.domain.Product;
 
public class SimpleProductManager implements ProductManager {
 
    privapackage springapp.service;
 
import java.util.List;
 
import springapp.domain.Product;
import springapp.repository.ProductDao;
 
public class SimpleProductManager implements ProductManager {
 
    // private List<Product> products;
    private ProductDao productDao;
 
    public List<Product> getProducts() {
        // return products;
        return productDao.getProductList();
    }
 
    public void increasePrice(int percentage) {
        List<Product> products = productDao.getProductList();
        if (products != null) {
            for (Product product : products) {
                double newPrice = product.getPrice().doubleValue() * 
                                    (100 + percentage)/100;
                product.setPrice(newPrice);
                productDao.saveProduct(product);
            }
        }
    }
 
    public void setProductDao(ProductDao productDao) {
        this.productDao = productDao;
    }
 
//    public void setProducts(List<Product> products) {
//        this.products = products;
//    }
 
} 

  

2.     Failing tests의 확정

 

test/springapp/repository/InMemoryProductDao.java

 

package springapp.repository;
 
import java.util.List;
 
import springapp.domain.Product;
 
public class InMemoryProductDao implements ProductDao {
 
    private List<Product> productList;
 
    public InMemoryProductDao(List<Product> productList) {
        this.productList = productList;
    }
 
    public List<Product> getProductList() {
        return productList;
    }
 
    public void saveProduct(Product prod) {
    }
 
} 

test/springapp/service/SimpleProductManagerTests.java

 

package springapp.service;
 
import java.util.ArrayList;
import java.util.List;
 
import springapp.domain.Product;
import springapp.repository.InMemoryProductDao;
import springapp.repository.ProductDao;
 
import junit.framework.TestCase;
 
public class SimpleProductManagerTests extends TestCase {
 
    private SimpleProductManager productManager;
 
    private List<Product> products;
    
    private static int PRODUCT_COUNT = 2;
    
    private static Double CHAIR_PRICE = new Double(20.50);
    private static String CHAIR_DESCRIPTION = "Chair";
    
    private static String TABLE_DESCRIPTION = "Table";
    private static Double TABLE_PRICE = new Double(150.10);         
    
    private static int POSITIVE_PRICE_INCREASE = 10;
    
    protected void setUp() throws Exception {
        productManager = new SimpleProductManager();
        products = new ArrayList<Product>();
        
        // stub up a list of products
        Product product = new Product();
        product.setDescription("Chair");
        product.setPrice(CHAIR_PRICE);
        products.add(product);
        
        product = new Product();
        product.setDescription("Table");
        product.setPrice(TABLE_PRICE);
        products.add(product);
        
        ProductDao productDao = new InMemoryProductDao(products);
        productManager.setProductDao(productDao);
        //productManager.setProducts(products);
    }
 
    public void testGetProductsWithNoProducts() {
        productManager = new SimpleProductManager();
        productManager.setProductDao(new InMemoryProductDao(null));
        assertNull(productManager.getProducts());
    }
    
    public void testGetProducts() {
        List<Product> products = productManager.getProducts();
        assertNotNull(products);        
        assertEquals(PRODUCT_COUNT, productManager.getProducts().size());
    
        Product product = products.get(0);
        assertEquals(CHAIR_DESCRIPTION, product.getDescription());
        assertEquals(CHAIR_PRICE, product.getPrice());
        
        product = products.get(1);
        assertEquals(TABLE_DESCRIPTION, product.getDescription());
        assertEquals(TABLE_PRICE, product.getPrice());      
    }   
    
    public void testIncreasePriceWithNullListOfProducts() {
        try {
            productManager = new SimpleProductManager();
            productManager.setProductDao(new InMemoryProductDao(null));
            productManager.increasePrice(POSITIVE_PRICE_INCREASE);
        }
        catch(NullPointerException ex) {
            fail("Products list is null.");
        }
    }
    
    public void testIncreasePriceWithEmptyListOfProducts() {
        try {
            productManager = new SimpleProductManager();
            productManager.setProductDao(new InMemoryProductDao(new ArrayList<Product>()));
            //productManager.setProducts(new ArrayList<Product>());
            productManager.increasePrice(POSITIVE_PRICE_INCREASE);
        }
        catch(Exception ex) {
            fail("Products list is empty.");
        }           
    }
    
    public void testIncreasePriceWithPositivePercentage() {
        productManager.increasePrice(POSITIVE_PRICE_INCREASE);
        double expectedChairPriceWithIncrease = 22.55;
        double expectedTablePriceWithIncrease = 165.11;
        
        List<Product> products = productManager.getProducts();      
        Product product = products.get(0);
        assertEquals(expectedChairPriceWithIncrease, product.getPrice());
        
        product = products.get(1);      
        assertEquals(expectedTablePriceWithIncrease, product.getPrice());       
    }
        
} 

test/springapp/service/InventoryControllerTests.java

 

package springapp.web;
 
import java.util.Map;
 
import org.springframework.web.servlet.ModelAndView;
 
import springapp.domain.Product;
import springapp.repository.InMemoryProductDao;
import springapp.service.SimpleProductManager;
import springapp.web.InventoryController;
 
import junit.framework.TestCase;
 
public class InventoryControllerTests extends TestCase {
 
    public void testHandleRequestView() throws Exception{
        InventoryController controller = new InventoryController();
        SimpleProductManager spm = new SimpleProductManager();
        spm.setProductDao(new InMemoryProductDao(new ArrayList<Product>()));
        controller.setProductManager(spm);
        //controller.setProductManager(new SimpleProductManager());
        ModelAndView modelAndView = controller.handleRequest(null, null);
        assertEquals("hello", modelAndView.getViewName());
        assertNotNull(modelAndView.getModel());
        Map modelMap = (Map) modelAndView.getModel().get("model");
        String nowValue = (String) modelMap.get("now");
        assertNotNull(nowValue);
    }
} 

war/WEB-INF/springapp-servlet.xml

 

<?xml version="1.0" encoding="UTF-8"?>
 
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
 
    <!-- the application context definition for the springapp DispatcherServlet -->
 
    <bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
        <property name="basename" value="messages"/>
    </bean>
    
    <bean name="/hello.htm" class="springapp.web.InventoryController">
        <property name="productManager" ref="productManager"/>
    </bean>
 
    <bean name="/priceincrease.htm" class="springapp.web.PriceIncreaseFormController">
        <property name="sessionForm" value="true"/>
        <property name="commandName" value="priceIncrease"/>
        <property name="commandClass" value="springapp.service.PriceIncrease"/>
        <property name="validator">
            <bean class="springapp.service.PriceIncreaseValidator"/>
        </property>
        <property name="formView" value="priceincrease"/>
        <property name="successView" value="hello.htm"/>
        <property name="productManager" ref="productManager"/>
    </bean>
 
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>        
    </bean>
 
</beans> 

war/WEB-INF/web.xml

 

<?xml version="1.0" encoding="UTF-8"?>
 
<web-app version="2.4"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >
 
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
 
  <servlet>
    <servlet-name>springapp</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>springapp</servlet-name>
    <url-pattern>*.htm</url-pattern>
  </servlet-mapping>
 
  <welcome-file-list>
    <welcome-file>
      index.jsp
    </welcome-file>
  </welcome-file-list>
 
  <jsp-config>
    <taglib>
      <taglib-uri>/spring</taglib-uri>
      <taglib-location>/WEB-INF/tld/spring-form.tld</taglib-location>
    </taglib>
  </jsp-config>
 
</web-app> 

war/WEB-INF/applicationContext.xml

 

<?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:aop="http://www.springframework.org/schema/aop"
         xmlns:tx="http://www.springframework.org/schema/tx"
         xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
 
    <!-- the parent application context definition for the springapp application -->
 
    <bean id="productManager" class="springapp.service.SimpleProductManager">
        <property name="productDao" ref="productDao"/>
    </bean>
 
    <bean id="productDao" class="springapp.repository.JdbcProductDao">
        <property name="dataSource" ref="dataSource"/>
    </bean>
 
</beans> 

war/WEB-INF/applicationContext.xml

 

<bean id="transactionManager" 
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
 
    <aop:config>
        <aop:advisor pointcut="execution(* *..ProductManager.*(..))" advice-ref="txAdvice"/>
    </aop:config>
 
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="save*"/>
            <tx:method name="*" read-only="true"/>
        </tx:attributes>
    </tx:advice> 

jdbc.properties 재사용

 

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
 
    <bean id="propertyConfigurer" 
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>
    </bean> 

 

 

spring-framework-2.5/lib/aspect/ aspectjweaver.jar

spring-framework-2.5/lib/jakarta-commons/commons-dbcp.jar

spring-framework-2.5/lib/jakarta-commons/commons-pool.jar

=> war/WEB-INF/lib

 

war/WEB-INF/applicationContext.xml

 

<?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:aop="http://www.springframework.org/schema/aop"
         xmlns:tx="http://www.springframework.org/schema/tx"
         xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
 
    <!-- the parent application context definition for the springapp application -->
 
    <bean id="productManager" class="springapp.service.SimpleProductManager">
        <property name="productDao" ref="productDao"/>
    </bean>
 
    <bean id="productDao" class="springapp.repository.JdbcProductDao">
        <property name="dataSource" ref="dataSource"/>
    </bean>
 
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
 
    <bean id="propertyConfigurer" 
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>
    </bean>
 
    <bean id="transactionManager" 
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
 
    <aop:config>
        <aop:advisor pointcut="execution(* *..ProductManager.*(..))" advice-ref="txAdvice"/>
    </aop:config>
 
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="save*"/>
            <tx:method name="*" read-only="true"/>
        </tx:attributes>
    </tx:advice>
 
</beans> 

 

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