Programming is Fun

    <dependency>
      <groupId>org.apache.tomcat</groupId>
      <artifactId>tomcat-servlet-api</artifactId>
      <version>7.0.37</version>
      <scope>provide</scope>
    </dependency>

public interface Controller {
    ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception;
}

  <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>3.2.1.RELEASE</version>
    </dependency>

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>mvc.spring01</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>
  <listener>
    <display-name>ContextLoader</display-name>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/app/*</url-pattern>
  </servlet-mapping>

</web-app>

public class HelloSpring {
    public String sayHello(String name) {
        return "Hello " + name;
    }
}

public class HelloController implements Controller {
    @Autowired
    private HelloSpring helloSpring;

    @Override
    public ModelAndView handleRequest(HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        String name = request.getParameter("name");
        String message = helloSpring.sayHello(name);
        Map<String, Object> model = new HashMap<String, Object>();
        model.put("message", message);
        return new ModelAndView("/WEB-INF/view/hello.jsp", model);
    }
}

<?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.xsd">
    <bean id="helloSpring" class="com.xyzlast.mvc.spring01.entities.HelloSpring"/>

</beans>

<?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:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
    <bean name="/hello" class="com.xyzlast.mvc.spring01.controllers.HelloController"/>

</beans>

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

    <title>Insert title here</title>

</head>

<body>
    <p>${message}</p>

</body>

</html>

@SuppressWarnings("unused")
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({ "file:src/main/webapp/WEB-INF/applicationContext.xml",  "file:src/main/webapp/WEB-INF/spring-servlet.xml"})
@WebAppConfiguration

public class HelloControllerTest {
    private MockMvc mvc;
    @Autowired
    WebApplicationContext context;

    @Before
    public void setUp() throws Exception{
        mvc = webAppContextSetup(context).build();
    }

    @Test
    public void getHello() throws Exception {
        MvcResult result = mvc.perform(get("/hello").param("name", "ykyoon"))
           .andExpect(status().isOk())
           .andReturn();
        String message = (String) result.getModelAndView().getModel().get("message");
        assertThat(message.contains("ykyoon"), is(true));
        assertThat(message, is(not(nullValue())));
        System.out.println(message);
    }
}

@Configuration

public class Spring2WebConfiguration extends WebMvcConfigurerAdapter {
    @Bean
    public HelloSpring helloSpring() {
        return new HelloSpring();
    }

    @Bean(name="/hello")
    public HelloController helloController() {
        HelloController helloController = new HelloController();
        helloController.setHelloSpring(helloSpring());
        return helloController;
    }
}

public class Spring2WebApplicationInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(final ServletContext servletContext) throws ServletException {
        registerDispatcherServlet(servletContext);
    }

    private void registerDispatcherServlet(final ServletContext servletContext) {
        WebApplicationContext dispatcherContext = createContext(Spring2WebConfiguration.class);
        DispatcherServlet dispatcherServlet = new DispatcherServlet(dispatcherContext);
        ServletRegistration.Dynamic dispatcher = servletContext.addServlet("dispatcher", dispatcherServlet);
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/app/*");
    }

    private WebApplicationContext createContext(final Class<?>... annotationClasses) {
        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
        context.register(annotationClasses);
        return context;
    }
}

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = Spring2WebConfiguration.class)
@WebAppConfiguration

public class HelloControllerTest {
    private MockMvc mvc;
    @Autowired
    WebApplicationContext context;