adding config files (#554)

* adding config files

* adding test class

* adding autowired annotation

spring-all/src/main/java/org/baeldung/controller/config/StudentControllerConfig.java

@@ -0,0 +1,37 @@
+package org.baeldung.controller.config;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRegistration;
+
+import org.springframework.web.WebApplicationInitializer;
+import org.springframework.web.context.ContextLoaderListener;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.context.support.GenericWebApplicationContext;
+import org.springframework.web.servlet.DispatcherServlet;
+
+public class StudentControllerConfig implements WebApplicationInitializer {
+
+
+		@Override
+		public void onStartup(ServletContext sc) throws ServletException {
+			AnnotationConfigWebApplicationContext root = new AnnotationConfigWebApplicationContext();
+			root.register(WebConfig.class);
+			
+			root.refresh();
+			root.setServletContext(sc);
+			
+			// Manages the lifecycle of the root application context
+			sc.addListener(new ContextLoaderListener(root));
+			
+			
+			
+			DispatcherServlet dv =new DispatcherServlet(new GenericWebApplicationContext());
+			
+			ServletRegistration.Dynamic appServlet = sc.addServlet("test-mvc",dv ); 
+			appServlet.setLoadOnStartup(1); 
+			appServlet.addMapping("/test/*");
+		}
+
+	}
+

spring-all/src/main/java/org/baeldung/controller/config/WebConfig.java

@@ -0,0 +1,28 @@
+package org.baeldung.controller.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.ViewResolver;
+import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
+
+@Configuration
+@EnableWebMvc
+@ComponentScan(basePackages= {"org.baledung.controller.controller","org.baledung.controller.config" }) 
+public class WebConfig extends WebMvcConfigurerAdapter {
+    @Override
+    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
+        configurer.enable();
+    }
+ 
+    @Bean
+    public ViewResolver viewResolver() {
+        InternalResourceViewResolver bean = new InternalResourceViewResolver();
+        bean.setPrefix("/WEB-INF/");
+        bean.setSuffix(".jsp");
+        return bean;
+    }
+}

spring-all/src/test/java/org/baeldung/controller/ControllerAnnotationTest.java

@@ -0,0 +1,93 @@
+package org.baeldung.controller;
+
+import javax.servlet.ServletContext;
+
+import org.baeldung.controller.config.WebConfig;
+import org.baeldung.controller.student.Student;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.servlet.ModelAndView;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@WebAppConfiguration
+@ContextConfiguration(classes={WebConfig.class},loader=AnnotationConfigContextLoader.class )
+public class ControllerAnnotationTest {
+	
+	@Autowired
+	private MockMvc mockMvc;
+
+    @Autowired
+    private WebApplicationContext wac;
+    
+    @Autowired
+    private ServletContext servletContext;
+
+    private Student selectedStudent;
+
+    @Before
+    public void setUp() {
+        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
+
+        selectedStudent = new Student();
+        selectedStudent.setId(1);
+        selectedStudent.setName("Peter");
+    }
+
+    @Test
+    public void testTestController() throws Exception {
+
+        ModelAndView mv = this.mockMvc.perform(MockMvcRequestBuilders.get("/test/"))
+          .andReturn()
+          .getModelAndView();
+
+        // validate modal data
+        Assert.assertSame(mv.getModelMap().get("data").toString(), "Welcome home man");
+
+        // validate view name
+        Assert.assertSame(mv.getViewName(), "welcome");
+    }
+
+    @Test
+    public void testRestController() throws Exception {
+
+        String responseBody = this.mockMvc.perform(MockMvcRequestBuilders.get("/student/{studentId}", 1))
+          .andReturn().getResponse()
+          .getContentAsString();
+
+        ObjectMapper reader = new ObjectMapper();
+
+        Student studentDetails = reader.readValue(responseBody, Student.class);
+
+        Assert.assertEquals(selectedStudent, studentDetails);
+
+    }
+
+    @Test
+    public void testRestAnnotatedController() throws Exception {
+
+        String responseBody = this.mockMvc.perform(MockMvcRequestBuilders.get("/annotated/student/{studentId}", 1))
+          .andReturn().getResponse()
+          .getContentAsString();
+
+        ObjectMapper reader = new ObjectMapper();
+
+        Student studentDetails = reader.readValue(responseBody, Student.class);
+
+        Assert.assertEquals(selectedStudent, studentDetails);
+    }
+
+}