Merge pull request #4070 from enpy303/master

A Quick Intro to the SpringBootServletInitializer

spring-boot/src/main/java/com/baeldung/servletinitializer/WarInitializerApplication.java

@@ -0,0 +1,36 @@
+package com.baeldung.servletinitializer;
+
+import java.time.LocalDateTime;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.web.support.SpringBootServletInitializer;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@SpringBootApplication
+public class WarInitializerApplication extends SpringBootServletInitializer {
+
+    @Override
+    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
+        return builder.sources(WarInitializerApplication.class);
+    }
+
+    public static void main(String[] args) {
+        SpringApplication sa = new SpringApplication(WarInitializerApplication.class);
+        sa.setLogStartupInfo(false);
+        sa.run(args);
+    }
+
+    @RestController
+    public static class WarInitializerController {
+
+        @RequestMapping("/")
+        public String handler(Model model) {
+            model.addAttribute("date", LocalDateTime.now());
+            return "WarInitializerApplication is up and running!";
+        }
+    }
+}

spring-boot/src/test/java/com/baeldung/servletinitializer/WarInitializerApplicationTest.java

@@ -0,0 +1,36 @@
+package com.baeldung.servletinitializer;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import com.baeldung.servletinitializer.WarInitializerApplication.WarInitializerController;
+
+@RunWith(SpringRunner.class)
+@WebMvcTest(controllers = WarInitializerController.class)
+public class WarInitializerApplicationTest {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Test
+    public void whenContextRootUrlIsAccessed_thenStatusIsOk() throws Exception {
+        mockMvc.perform(get("/"))
+            .andExpect(status().is(200));
+    }
+
+    @Test
+    public void whenContextRootUrlIsAccesed_thenCorrectStringIsReturned() throws Exception {
+        mockMvc.perform(get("/"))
+            .andExpect(content().string(containsString("WarInitializerApplication is up and running!")));
+    }
+
+}