Spring MVC task

Author: Taras

settings.gradle

@@ -5,4 +5,5 @@ include 'spring-framework-ioc-advanced'
 include 'spring-framework-mvc-thymeleaf'
 include 'spring-framework-model'
 include 'spring-framework-ioc-task'
+include 'spring-framework-mvc-task'
 

spring-framework-ioc-task/README.md

@@ -5,4 +5,9 @@ This application is based on two abstraction `StringConsumerService`, and `Sprin
 
  Your job is to **configure application context**, so the `StringConsumerService#comnume()` will print a spring in upper case
   with a space after each letter. See details in the 'todo' code comments. An entry point is a main class `AppContextTaskConfig`
+  
+  _See related examples:_
+ * https://github.com/BobocodeCourse/spring-framework/tree/master/spring-framework-ioc-basics
+ * https://github.com/BobocodeCourse/spring-framework/tree/master/spring-framework-ioc-advanced
+   
 

spring-framework-mvc-task/README.md

@@ -0,0 +1,12 @@
+# Spring MVC - Sum controller task
+
+This is a web application that provides an endpoint to calculate a mathematical sum. Thus, you can **calculate a sum of a**,
+ and b using the following URL `'/sum/a/b'`, and application should return you the result message.
+ 
+ E.g. `http://localhost:8080/sum/12/98` should respond with the message `12 + 98 = 110`
+ 
+ The described logic should be implemented in `SumController`, and you job is to 
+ * **finish controller implementation**
+  
+  _All other required configurations are already implmented. To test this application, you need to deploy it to the Servlet
+   container (e.g. Tomcat)_

spring-framework-mvc-task/build.gradle

@@ -0,0 +1,21 @@
+group 'com.bobocode'
+version '1.0-SNAPSHOT'
+
+apply plugin: 'java'
+apply plugin: 'war'
+
+sourceCompatibility = 1.8
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile 'org.projectlombok:lombok:1.16.12'
+
+    compile 'org.springframework:spring-context:4.3.3.RELEASE'
+    compile 'org.springframework:spring-webmvc:4.3.8.RELEASE'
+
+    providedCompile "javax.servlet:javax.servlet-api:3.1.0"
+
+}

spring-framework-mvc-task/src/main/java/com/bobocode/configs/BobocodeWebInitializer.java

@@ -0,0 +1,21 @@
+package com.bobocode.configs;
+
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+
+public class BobocodeWebInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
+    @Override
+    protected Class<?>[] getRootConfigClasses() {
+        return new Class[]{RootConfig.class};
+    }
+
+    @Override
+    protected Class<?>[] getServletConfigClasses() {
+        return new Class[]{WebConfig.class};
+    }
+
+    @Override
+    protected String[] getServletMappings() {
+        return new String[]{"/"};
+    }
+}

spring-framework-mvc-task/src/main/java/com/bobocode/configs/RootConfig.java

@@ -0,0 +1,23 @@
+package com.bobocode.configs;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.ComponentScan.Filter;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.FilterType;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+import java.util.function.BiFunction;
+
+@Configuration
+@ComponentScan(basePackages = "com.bobocode", excludeFilters = {
+        @Filter(type = FilterType.ANNOTATION, value = EnableWebMvc.class),
+        @Filter(type = FilterType.ANNOTATION, value = Controller.class)
+})
+public class RootConfig {
+    @Bean
+    public BiFunction<Integer, Integer, Integer> sumFunction() {
+        return (a, b) -> a + b;
+    }
+}

spring-framework-mvc-task/src/main/java/com/bobocode/configs/WebConfig.java

@@ -0,0 +1,11 @@
+package com.bobocode.configs;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+@Configuration
+@ComponentScan(basePackages = "com.bobocode.controller")
+@EnableWebMvc
+public class WebConfig {
+}

spring-framework-mvc-task/src/main/java/com/bobocode/controller/SumController.java

@@ -0,0 +1,20 @@
+package com.bobocode.controller;
+
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PathVariable;
+
+import java.util.function.BiFunction;
+
+// todo: 1 - declare this class as Spring MVC controller
+public class SumController {
+
+    @Autowired // this bean is already configured in RootConfig.java
+    private BiFunction<Integer, Integer, Integer> integerBiFunction;
+
+    // todo: 2 - specify proper url mapping ('/sum/a/b', where a, and b is a pass variable)
+    // todo: 3 - declare that this method provides a response body that should be returned to the client
+    public String compute(@PathVariable Integer a, @PathVariable Integer b) {
+        return a + " + " + b + " = " + integerBiFunction.apply(a, b);
+    }
+}