Added the example with MongoRepository

spring-data-mongodb/src/main/java/org/baeldung/config/MongoConfig.java

@@ -2,11 +2,13 @@ package org.baeldung.config;
 
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.mongodb.config.AbstractMongoConfiguration;
+import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
 
 import com.mongodb.Mongo;
 import com.mongodb.MongoClient;
 
 @Configuration
+@EnableMongoRepositories(basePackages = "org.baeldung.repository")
 public class MongoConfig extends AbstractMongoConfiguration {
 
     @Override
@@ -20,7 +22,7 @@ public class MongoConfig extends AbstractMongoConfiguration {
     }
 
     @Override
-    protected String getMappingBasePackage() {
+    public String getMappingBasePackage() {
         return "org.baeldung";
     }
 }

spring-data-mongodb/src/main/java/org/baeldung/repository/UserRepository.java

@@ -1,68 +1,11 @@
 package org.baeldung.repository;
 
-import java.util.List;
 
-import org.baeldung.model.User;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.mongodb.core.MongoTemplate;
-import org.springframework.data.mongodb.core.query.Criteria;
-import org.springframework.data.mongodb.core.query.Query;
-import org.springframework.data.mongodb.core.query.Update;
+import org.springframework.data.mongodb.repository.MongoRepository;
 import org.springframework.stereotype.Repository;
+import org.baeldung.model.User;
 
-import com.mongodb.WriteResult;
 
-@Repository
-public class UserRepository {
-
-    @Autowired
-    private MongoTemplate mongoTemplate;
-
-    public void insertUser(User user) {
-        mongoTemplate.insert(user, "user");
-    }
-
-    public List<User> listUser() {
-        return mongoTemplate.findAll(User.class, "user");
-    }
-
-    public void removeUser(User user) {
-        mongoTemplate.remove(user, "user");
-    }
-
-    public void saveUser(User user) {
-        mongoTemplate.save(user, "user");
-    }
-
-    public User findAndModifyUser(String name, String newName) {
-        Query query = new Query();
-        query.addCriteria(Criteria.where("name").is(name));
-        Update update = new Update();
-        update.set("name", newName);
-        return mongoTemplate.findAndModify(query, update, User.class);
-    }
-
-    public void updateFirstUser(String name, String newName) {
-        Query query = new Query();
-        query.addCriteria(Criteria.where("name").is(name));
-        Update update = new Update();
-        update.set("name", newName);
-        mongoTemplate.updateFirst(query, update, User.class);
-    }
-
-    public WriteResult upsertUser(String name, String newName) {
-        Query query = new Query();
-        query.addCriteria(Criteria.where("name").is(name));
-        Update update = new Update();
-        update.set("name", newName);
-        return mongoTemplate.upsert(query, update, User.class);
-    }
-
-    public void updateMultiUser(String name, String newName) {
-        Query query = new Query();
-        query.addCriteria(Criteria.where("name").is(name));
-        Update update = new Update();
-        update.set("name", newName);
-        mongoTemplate.updateMulti(query, update, User.class);
-    }
+public interface UserRepository extends MongoRepository<User, String> {
+   
 }

spring-data-mongodb/src/main/java/org/baeldung/service/UserService.java

@@ -0,0 +1,67 @@
+package org.baeldung.service;
+
+import java.util.List;
+
+import org.baeldung.model.User;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.data.mongodb.core.query.Criteria;
+import org.springframework.data.mongodb.core.query.Query;
+import org.springframework.data.mongodb.core.query.Update;
+
+import com.mongodb.WriteResult;
+
+
+public class UserService {
+
+    @Autowired
+    private MongoTemplate mongoTemplate;
+
+    public void insertUser(User user) {
+        mongoTemplate.insert(user, "user");
+    }
+
+    public List<User> listUser() {
+        return mongoTemplate.findAll(User.class, "user");
+    }
+
+    public void removeUser(User user) {
+        mongoTemplate.remove(user, "user");
+    }
+
+    public void saveUser(User user) {
+        mongoTemplate.save(user, "user");
+    }
+
+    public User findAndModifyUser(String name, String newName) {
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is(name));
+        Update update = new Update();
+        update.set("name", newName);
+        return mongoTemplate.findAndModify(query, update, User.class);
+    }
+
+    public void updateFirstUser(String name, String newName) {
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is(name));
+        Update update = new Update();
+        update.set("name", newName);
+        mongoTemplate.updateFirst(query, update, User.class);
+    }
+
+    public WriteResult upsertUser(String name, String newName) {
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is(name));
+        Update update = new Update();
+        update.set("name", newName);
+        return mongoTemplate.upsert(query, update, User.class);
+    }
+
+    public void updateMultiUser(String name, String newName) {
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is(name));
+        Update update = new Update();
+        update.set("name", newName);
+        mongoTemplate.updateMulti(query, update, User.class);
+    }
+}