[MVC 구현하기 - 1단계] 디노(신종화) 미션 제출합니다.

.github/workflows/build.yml

@@ -4,7 +4,7 @@ on:
     branches:
       - main
   pull_request:
-    types: [opened, synchronize, reopened]
+    types: [ opened, synchronize, reopened ]
 jobs:
   build:
     name: Build and analyze
@@ -34,4 +34,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-        run: ./gradlew clean build codeCoverageReport --info -x :study:build
+        run: ./gradlew clean build codeCoverageReport sonar --info -x :study:build

app/src/test/java/com/techcourse/DispatcherServletTest.java

@@ -0,0 +1,7 @@
+package com.techcourse;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DispatcherServletTest {
+
+}

mvc/src/main/java/webmvc/org/springframework/web/servlet/mvc/tobe/AnnotationHandlerMapping.java

@@ -1,11 +1,17 @@
 package webmvc.org.springframework.web.servlet.mvc.tobe;
 
+import context.org.springframework.stereotype.Controller;
 import jakarta.servlet.http.HttpServletRequest;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
+import java.lang.reflect.Method;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Set;
+import org.reflections.Reflections;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import web.org.springframework.web.bind.annotation.RequestMapping;
+import web.org.springframework.web.bind.annotation.RequestMethod;
 
 public class AnnotationHandlerMapping {
 
@@ -20,10 +26,30 @@ public AnnotationHandlerMapping(final Object... basePackage) {
     }
 
     public void initialize() {
+        final Reflections reflections = new Reflections(basePackage);
+        final Set<Class<?>> controllerClasses = reflections.getTypesAnnotatedWith(Controller.class);
+
+        controllerClasses.forEach(
+                aClass -> Arrays.stream(aClass.getDeclaredMethods()).forEach(
+                        method -> {
+                            final RequestMapping requestMapping = method.getAnnotation(RequestMapping.class);
+                            if (requestMapping != null) {
+                                putHandlerExecutions(method, requestMapping);
+                            }
+                        }
+                )
+        );
         log.info("Initialized AnnotationHandlerMapping!");
     }
 
+    private void putHandlerExecutions(final Method method, final RequestMapping requestMapping) {
+        Arrays.stream(requestMapping.method())
+                .map(requestMethod -> new HandlerKey(requestMapping.value(), requestMethod))
+                .forEach(handlerKey -> handlerExecutions.put(handlerKey, new HandlerExecution(method)));
+    }
+
     public Object getHandler(final HttpServletRequest request) {
-        return null;
+        HandlerKey handlerKey = new HandlerKey(request.getRequestURI(), RequestMethod.valueOf(request.getMethod()));
+        return handlerExecutions.get(handlerKey);
     }
 }

mvc/src/main/java/webmvc/org/springframework/web/servlet/mvc/tobe/HandlerExecution.java

@@ -2,11 +2,20 @@
 
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import java.lang.reflect.Method;
 import webmvc.org.springframework.web.servlet.ModelAndView;
 
 public class HandlerExecution {
 
+    private final Method method;
+
+    public HandlerExecution(final Method method) {
+        this.method = method;
+    }
+
     public ModelAndView handle(final HttpServletRequest request, final HttpServletResponse response) throws Exception {
-        return null;
+        final Class<?> declaringClass = method.getDeclaringClass();
+        final Object object = declaringClass.getDeclaredConstructor().newInstance();
+        return (ModelAndView) method.invoke(object, request, response);
     }
 }

study/src/main/java/servlet/com/example/CharacterEncodingFilter.java

@@ -8,9 +8,13 @@
 @WebFilter("/*")
 public class CharacterEncodingFilter implements Filter {
 
+    private static final String DEFAULT_ENCODING = "UTF-8";
+
     @Override
     public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
         request.getServletContext().log("doFilter() 호출");
+        request.setCharacterEncoding(DEFAULT_ENCODING);
+        response.setCharacterEncoding(DEFAULT_ENCODING);
         chain.doFilter(request, response);
     }
 }

study/src/test/java/reflection/Junit3TestRunner.java

@@ -1,5 +1,6 @@
 package reflection;
 
+import java.lang.reflect.Method;
 import org.junit.jupiter.api.Test;
 
 class Junit3TestRunner {
@@ -9,5 +10,26 @@ void run() throws Exception {
         Class<Junit3Test> clazz = Junit3Test.class;
 
         // TODO Junit3Test에서 test로 시작하는 메소드 실행
+
+        // 객체 생성 가능
+        final Junit3Test junit3Test = clazz.getDeclaredConstructor().newInstance();
+
+        // 1. 객체에서 바로 메서드 호출
+        junit3Test.test1();
+        junit3Test.test2();
+
+        // 2. getDeclaredMethod로 메서드 찾아서 호출
+        final Method test1 = clazz.getDeclaredMethod("test1");
+        final Method test2 = clazz.getDeclaredMethod("test2");
+        test1.invoke(clazz.cast(junit3Test));
+        test2.invoke(clazz.cast(junit3Test));
+
+        // 3. getDeclaredMethods로 메서드 배열 가져온 후 for문 돌면서 호출
+        final Method[] methods = clazz.getDeclaredMethods();
+        for (final Method method : methods) {
+            if (method.getName().startsWith("test")) {
+                method.invoke(clazz.cast(junit3Test));
+            }
+        }
     }
 }

study/src/test/java/reflection/Junit4TestRunner.java

@@ -1,5 +1,8 @@
 package reflection;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.lang.reflect.Method;
 import org.junit.jupiter.api.Test;
 
 class Junit4TestRunner {
@@ -9,5 +12,16 @@ void run() throws Exception {
         Class<Junit4Test> clazz = Junit4Test.class;
 
         // TODO Junit4Test에서 @MyTest 애노테이션이 있는 메소드 실행
+        final Junit4Test junit4Test = clazz.getDeclaredConstructor().newInstance();
+
+        final Method[] declaredMethods = clazz.getDeclaredMethods();
+
+        for (final Method method : declaredMethods) {
+            final MyTest methodAnnotation = method.getAnnotation(MyTest.class);
+            if (methodAnnotation != null) {
+                assertThat(methodAnnotation).isNotNull();
+                method.invoke(junit4Test);
+            }
+        }
     }
 }

study/src/test/java/reflection/ReflectionTest.java

@@ -1,15 +1,16 @@
 package reflection;
 
-import org.junit.jupiter.api.Test;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import static org.assertj.core.api.Assertions.assertThat;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
+import java.util.Arrays;
 import java.util.List;
-
-import static org.assertj.core.api.Assertions.assertThat;
+import java.util.stream.Collectors;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class ReflectionTest {
 
@@ -19,34 +20,38 @@ class ReflectionTest {
     void givenObject_whenGetsClassName_thenCorrect() {
         final Class<Question> clazz = Question.class;
 
-        assertThat(clazz.getSimpleName()).isEqualTo("");
-        assertThat(clazz.getName()).isEqualTo("");
-        assertThat(clazz.getCanonicalName()).isEqualTo("");
+        assertThat(clazz.getSimpleName()).isEqualTo("Question");
+        assertThat(clazz.getName()).isEqualTo("reflection.Question");
+        assertThat(clazz.getCanonicalName()).isEqualTo("reflection.Question");
     }
 
     @Test
     void givenClassName_whenCreatesObject_thenCorrect() throws ClassNotFoundException {
         final Class<?> clazz = Class.forName("reflection.Question");
 
-        assertThat(clazz.getSimpleName()).isEqualTo("");
-        assertThat(clazz.getName()).isEqualTo("");
-        assertThat(clazz.getCanonicalName()).isEqualTo("");
+        assertThat(clazz.getSimpleName()).isEqualTo("Question");
+        assertThat(clazz.getName()).isEqualTo("reflection.Question");
+        assertThat(clazz.getCanonicalName()).isEqualTo("reflection.Question");
     }
 
     @Test
     void givenObject_whenGetsFieldNamesAtRuntime_thenCorrect() {
         final Object student = new Student();
-        final Field[] fields = null;
-        final List<String> actualFieldNames = null;
+        final Field[] fields = student.getClass().getDeclaredFields();
+        final List<String> actualFieldNames = Arrays.stream(fields)
+                .map(Field::getName)
+                .collect(Collectors.toList());
 
         assertThat(actualFieldNames).contains("name", "age");
     }
 
     @Test
     void givenClass_whenGetsMethods_thenCorrect() {
         final Class<?> animalClass = Student.class;
-        final Method[] methods = null;
-        final List<String> actualMethods = null;
+        final Method[] methods = animalClass.getDeclaredMethods();
+        final List<String> actualMethods = Arrays.stream(methods)
+                .map(Method::getName)
+                .collect(Collectors.toList());
 
         assertThat(actualMethods)
                 .hasSize(3)
@@ -56,7 +61,7 @@ void givenClass_whenGetsMethods_thenCorrect() {
     @Test
     void givenClass_whenGetsAllConstructors_thenCorrect() {
         final Class<?> questionClass = Question.class;
-        final Constructor<?>[] constructors = null;
+        final Constructor<?>[] constructors = questionClass.getConstructors();
 
         assertThat(constructors).hasSize(2);
     }
@@ -65,11 +70,20 @@ void givenClass_whenGetsAllConstructors_thenCorrect() {
     void givenClass_whenInstantiatesObjectsAtRuntime_thenCorrect() throws Exception {
         final Class<?> questionClass = Question.class;
 
-        final Constructor<?> firstConstructor = null;
-        final Constructor<?> secondConstructor = null;
+        final Constructor<?> firstConstructor = questionClass.getDeclaredConstructor(
+                String.class,
+                String.class,
+                String.class
+        );
+
+        final Constructor<?> secondConstructor = questionClass.getDeclaredConstructor(
+                String.class,
+                String.class,
+                String.class
+        );
 
-        final Question firstQuestion = null;
-        final Question secondQuestion = null;
+        final Question firstQuestion = (Question) firstConstructor.newInstance("gugu", "제목1", "내용1");
+        final Question secondQuestion = (Question) secondConstructor.newInstance("gugu", "제목2", "내용2");
 
         assertThat(firstQuestion.getWriter()).isEqualTo("gugu");
         assertThat(firstQuestion.getTitle()).isEqualTo("제목1");
@@ -82,15 +96,15 @@ void givenClass_whenInstantiatesObjectsAtRuntime_thenCorrect() throws Exception
     @Test
     void givenClass_whenGetsPublicFields_thenCorrect() {
         final Class<?> questionClass = Question.class;
-        final Field[] fields = null;
+        final Field[] fields = questionClass.getFields();
 
-        assertThat(fields).hasSize(0);
+        assertThat(fields).isEmpty();
     }
 
     @Test
     void givenClass_whenGetsDeclaredFields_thenCorrect() {
         final Class<?> questionClass = Question.class;
-        final Field[] fields = null;
+        final Field[] fields = questionClass.getDeclaredFields();
 
         assertThat(fields).hasSize(6);
         assertThat(fields[0].getName()).isEqualTo("questionId");
@@ -99,31 +113,32 @@ void givenClass_whenGetsDeclaredFields_thenCorrect() {
     @Test
     void givenClass_whenGetsFieldsByName_thenCorrect() throws Exception {
         final Class<?> questionClass = Question.class;
-        final Field field = null;
+        final Field field = questionClass.getDeclaredField("questionId");
 
         assertThat(field.getName()).isEqualTo("questionId");
     }
 
     @Test
     void givenClassField_whenGetsType_thenCorrect() throws Exception {
         final Field field = Question.class.getDeclaredField("questionId");
-        final Class<?> fieldClass = null;
+        final Class<?> fieldClass = field.getType();
 
         assertThat(fieldClass.getSimpleName()).isEqualTo("long");
     }
 
     @Test
     void givenClassField_whenSetsAndGetsValue_thenCorrect() throws Exception {
         final Class<?> studentClass = Student.class;
-        final Student student = null;
-        final Field field = null;
+        final Student student = (Student) studentClass.getDeclaredConstructor().newInstance();
+        final Field field = studentClass.getDeclaredField("age");
 
         // todo field에 접근 할 수 있도록 만든다.
+        field.setAccessible(true);
 
         assertThat(field.getInt(student)).isZero();
         assertThat(student.getAge()).isZero();
 
-        field.set(null, null);
+        field.set(student, 99);
 
         assertThat(field.getInt(student)).isEqualTo(99);
         assertThat(student.getAge()).isEqualTo(99);

study/src/test/java/reflection/ReflectionsTest.java

@@ -1,9 +1,16 @@
 package reflection;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Set;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.reflections.Reflections;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import reflection.annotation.Controller;
+import reflection.annotation.Repository;
+import reflection.annotation.Service;
 
 class ReflectionsTest {
 
@@ -13,6 +20,19 @@ class ReflectionsTest {
     void showAnnotationClass() throws Exception {
         Reflections reflections = new Reflections("reflection.examples");
 
-        // TODO 클래스 레벨에 @Controller, @Service, @Repository 애노테이션이 설정되어 모든 클래스 찾아 로그로 출력한다.
+        // TODO 클래스 레벨에 @Controller, @Service, @Repository 애노테이션이 설정되어 있는 모든 클래스 찾아 로그로 출력한다.
+        Set<Class<?>> controllerClass = reflections.getTypesAnnotatedWith(Controller.class);
+        Set<Class<?>> serviceClass = reflections.getTypesAnnotatedWith(Service.class);
+        Set<Class<?>> repositoryClass = reflections.getTypesAnnotatedWith(Repository.class);
+
+        Assertions.assertAll(
+                () -> assertThat(controllerClass).isNotNull(),
+                () -> assertThat(serviceClass).isNotNull(),
+                () -> assertThat(repositoryClass).isNotNull()
+        );
+
+        log.info(controllerClass.toString());
+        log.info(serviceClass.toString());
+        log.info(repositoryClass.toString());
     }
 }

study/src/test/java/servlet/com/example/ServletTest.java

@@ -28,7 +28,7 @@ void testSharedCounter() {
 
         // expected를 0이 아닌 올바른 값으로 바꿔보자.
         // 예상한 결과가 나왔는가? 왜 이런 결과가 나왔을까?
-        assertThat(Integer.parseInt(response.body())).isEqualTo(0);
+        assertThat(Integer.parseInt(response.body())).isEqualTo(3);
     }
 
     @Test
@@ -50,6 +50,6 @@ void testLocalCounter() {
 
         // expected를 0이 아닌 올바른 값으로 바꿔보자.
         // 예상한 결과가 나왔는가? 왜 이런 결과가 나왔을까?
-        assertThat(Integer.parseInt(response.body())).isEqualTo(0);
+        assertThat(Integer.parseInt(response.body())).isEqualTo(1);
     }
 }