Configure REST prefix in WebAppConfig

Based on PR feedback.

Author: ledsoft

src/main/java/cz/cvut/kbss/datasetdashboard/config/WebAppConfig.java

@@ -11,9 +11,13 @@
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.http.converter.ResourceHttpMessageConverter;
 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.method.HandlerTypePredicate;
+import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @Configuration
-public class WebAppConfig {
+public class WebAppConfig implements WebMvcConfigurer {
 
     @Bean(name = "objectMapper")
     @Primary
@@ -50,4 +54,9 @@ public static ObjectMapper createJsonObjectMapper() {
         objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
         return objectMapper;
     }
+
+    @Override
+    public void configurePathMatch(PathMatchConfigurer configurer) {
+        configurer.addPathPrefix("/rest", HandlerTypePredicate.forAnnotation(RestController.class));
+    }
 }

src/main/java/cz/cvut/kbss/datasetdashboard/rest/DatasetDescriptorController.java

@@ -9,7 +9,7 @@
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
-@RequestMapping("/rest/dataset-descriptor")
+@RequestMapping("/dataset-descriptor")
 public class DatasetDescriptorController {
 
     private final DatasetDescriptorService service;

src/main/java/cz/cvut/kbss/datasetdashboard/rest/DatasetSourceController.java

@@ -12,7 +12,7 @@
 import java.util.Map;
 
 @RestController
-@RequestMapping("/rest/dataset-source")
+@RequestMapping("/dataset-source")
 public class DatasetSourceController {
 
     private final DatasetSourceService datasetSourceService;

src/main/java/cz/cvut/kbss/datasetdashboard/rest/IndexController.java

@@ -7,7 +7,7 @@
  * Created by kremep1 on 30/01/18.
  */
 @Controller public class IndexController {
-    @RequestMapping(value = {"/rest/namespaces"}) public String index() {
+    @RequestMapping(value = {"/namespaces"}) public String index() {
         return "index";
     }
 }