PR example

src/main/java/org/springframework/samples/petclinic/vet/VetController.java

@@ -23,6 +23,7 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 
@@ -75,4 +76,13 @@ class VetController {
 		return vets;
 	}
 
+	@GetMapping({"/vets/{id}"})
+	public @ResponseBody Vet getById(@PathVariable Integer id) {
+		if (id == null) {
+			throw new IllegalArgumentException("id is required");
+		}
+		System.out.println("id: " + id);
+		return vetRepository.findById(id);
+	}
+
 }

src/main/java/org/springframework/samples/petclinic/vet/VetRepository.java

@@ -55,4 +55,7 @@ public interface VetRepository extends Repository<Vet, Integer> {
 	@Cacheable("vets")
 	Page<Vet> findAll(Pageable pageable) throws DataAccessException;
 
+	@Transactional(readOnly = false)
+	Vet findById(Integer id) throws RuntimeException;
+
 }

src/test/java/org/springframework/samples/petclinic/vet/VetControllerTests.java

@@ -72,6 +72,7 @@ class VetControllerTests {
 	@BeforeEach
 	void setup() {
 		given(this.vets.findAll()).willReturn(Lists.newArrayList(james(), helen()));
+		given(this.vets.findById(1)).willReturn(james());
 		given(this.vets.findAll(any(Pageable.class)))
 			.willReturn(new PageImpl<Vet>(Lists.newArrayList(james(), helen())));
 
@@ -95,4 +96,11 @@ class VetControllerTests {
 			.andExpect(jsonPath("$.vetList[0].id").value(1));
 	}
 
+	@Test
+	void testShowResourcesVet() throws Exception {
+		ResultActions actions = mockMvc.perform(get("/vets/1").accept(MediaType.APPLICATION_JSON))
+			.andExpect(status().isOk());
+		actions.andExpect(jsonPath("$.id").value(1));
+	}
+
 }