update

sboot-rest-swagger/README.md

@@ -23,9 +23,12 @@ copy the response and paste @ https://editor.swagger.io/
 ### **View Swagger UI**
 * http://localhost:6060/restapi-swagger/swagger-ui.html
 
-### **RESTApi Response**
-* http://localhost:6060/restapi-swagger/products
-* http://localhost:6060/restapi-swagger/products/100
+### **REST End-points**
+* GET: http://localhost:6060/restapi-swagger/products
+* GET: http://localhost:6060/restapi-swagger/products/{id}
+* POST: http://localhost:6060/restapi-swagger/addProduct
+* PUT: http://localhost:6060/restapi-swagger/updateProduct/{id}
+* DELETE: http://localhost:6060/restapi-swagger/deleteProduct/{id}
 
 ### TEST CUSTOM EXCEPTIONS
 #### CustomExceptionGlobalHandler.handleMethodArgumentNotValid(); - Choose POST method in POSTMAN

sboot-rest-swagger/src/main/java/jbr/swagger/controller/ProductController.java

@@ -83,9 +83,7 @@ public ResponseEntity<Void> addProduct(@Valid @RequestBody Product product, UriC
     try {
       productService.addProduct(product);
       HttpHeaders headers = new HttpHeaders();
-      headers.setLocation(builder.path("/addProduct")
-          .buildAndExpand(product.getId())
-          .toUri());
+      headers.setLocation(builder.path("/addProduct").buildAndExpand(product.getId()).toUri());
       return new ResponseEntity<Void>(headers, HttpStatus.CREATED);
     } catch (ProductExistsException ex) {
       throw new ResponseStatusException(HttpStatus.BAD_REQUEST, ex.getMessage());

sboot-rest/README.md

@@ -2,11 +2,18 @@
   1. Eclipse/STS
   2. SpringBoot
   3. REST API
+  4. H2DB
 
 ### CONCEPTS/TOPICS COVERED
-  1. CRUD Operations with hard-coded values in Java HashMap
+  1. CRUD Operations with H2DB. 
 
 ### HOW TO RUN?  (use POSTMAN Client)
-http://localhost:8080/ </br>
-http://localhost:8080/products </br>
-http://localhost:8080/products/100
+## RESTApi End-points
+* GET: http://localhost:6060/springboot-restapi/product/all
+* GET: http://localhost:6060/springboot-restapi/product/{id}
+* POST: http://localhost:6060/springboot-restapi/product/add
+* PUT: http://localhost:6060/springboot-restapi/product/update/{id}
+* DELETE: http://localhost:6060/springboot-restapi/product/delete/{id}
+
+### H2 DB Console
+http://localhost:6060/springboot-restapi/h2-console

sboot-rest/build.gradle

@@ -1,18 +1,26 @@
-
-
 plugins {
+ 	id 'org.springframework.boot' version '2.2.4.RELEASE'
     id 'java'
 }
 
+apply plugin: 'io.spring.dependency-management'
+
 sourceCompatibility = '1.8'
 targetCompatibility = '1.8'
 
 repositories {
-    jcenter()
+	mavenCentral()
 }
 
 dependencies {
-	compile group: 'org.springframework.boot', name: 'spring-boot-starter-parent', version: '2.0.0.RELEASE', ext: 'pom'
-	compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '2.0.0.RELEASE'
-    testImplementation 'junit:junit:4.12'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+
+	runtime('com.h2database:h2')
+
+	implementation 'org.projectlombok:lombok:1.18.12'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	runtime('org.springframework.boot:spring-boot-devtools')
+	testCompile('org.springframework.boot:spring-boot-starter-test')
 }

sboot-rest/src/main/java/jbr/springboot/restapi/controller/ProductController.java

@@ -3,13 +3,19 @@
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RestController;
 
 import jbr.springboot.restapi.model.Product;
+import jbr.springboot.restapi.model.ProductApiResponse;
 import jbr.springboot.restapi.service.ProductService;
 
 /**
@@ -19,33 +25,37 @@
  * @since 2018, Jun 20
  */
 @RestController
+@CrossOrigin(origins = "*")
+@RequestMapping("/product")
 public class ProductController {
 
   @Autowired
   private ProductService productService;
 
-  @RequestMapping("/products")
-  public List<Product> getAllProducts() {
-    return productService.getAllProducts();
+  @GetMapping("/all")
+  public ProductApiResponse<List<Product>> getAllProducts() {
+    return new ProductApiResponse<>(HttpStatus.OK.value(), "All products are retrieved successfully.",
+        productService.getAllProducts());
   }
 
-  @RequestMapping("/products/{id}")
-  public Product getProductById(@PathVariable String id) {
-    return productService.getProductById(id);
+  @GetMapping("/{id}")
+  public ProductApiResponse<Product> getProductById(@PathVariable String id) {
+    return new ProductApiResponse<Product>(HttpStatus.OK.value(), "Product retrieved successfully.",
+        productService.getProductById(id));
   }
 
-  @RequestMapping(method = RequestMethod.POST, value = "/products")
+  @PostMapping("/add")
   public void addProduct(@RequestBody Product product) {
     productService.addProduct(product);
   }
 
-  @RequestMapping(method = RequestMethod.PUT, value = "/products/{id}")
+  @PutMapping(value = "/update/{id}")
   public void updateProduct(@RequestBody Product product, @PathVariable String id) {
     productService.updateProduct(product, id);
   }
 
-  @RequestMapping(method = RequestMethod.DELETE, value = "/products/{id}")
+  @DeleteMapping("/delete/{id}")
   public void deleteProduct(@PathVariable String id) {
-    productService.delete(id);
+    productService.deleteProduct(id);
   }
 }

sboot-rest/src/main/java/jbr/springboot/restapi/dao/ProductRepository.java

@@ -0,0 +1,11 @@
+package jbr.springboot.restapi.dao;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import jbr.springboot.restapi.model.Product;
+
+@Repository
+public interface ProductRepository extends JpaRepository<Product, String> {
+
+  Product findProductByName(String name);
+}

sboot-rest/src/main/java/jbr/springboot/restapi/model/Product.java

@@ -1,63 +1,27 @@
 package jbr.springboot.restapi.model;
 
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
 /**
  * Product Model.
  * 
  * @author Ranjith Sekar
  * @since 2018, Jun 20
  */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Entity
 public class Product {
 
-	private String id;
-	private String name;
-	private String type;
-	private String price;
-
-	public Product() {
-	}
-
-	public Product(String id, String name, String type, String price) {
-		this.id = id;
-		this.name = name;
-		this.type = type;
-		this.price = price;
-	}
-
-	public String getName() {
-		return name;
-	}
-
-	public String getId() {
-		return id;
-	}
-
-	public void setId(String id) {
-		this.id = id;
-	}
-
-	public void setName(String name) {
-		this.name = name;
-	}
-
-	public String getType() {
-		return type;
-	}
-
-	public void setType(String type) {
-		this.type = type;
-	}
-
-	public String getPrice() {
-		return price;
-	}
-
-	public void setPrice(String price) {
-		this.price = price;
-	}
-
-	@Override
-	public String toString() {
-		return "id:" + this.id + " | name: " + this.name + " | type: " + this.type + " | price: " + this.price;
-	}
-
+  @Id
+  private String id;
+  private String name;
+  private String category;
+  private String price;
 }

sboot-rest/src/main/java/jbr/springboot/restapi/model/ProductApiResponse.java

@@ -0,0 +1,14 @@
+package jbr.springboot.restapi.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class ProductApiResponse<T> {
+  private int status;
+  private String message;
+  private Object result;
+}

sboot-rest/src/main/java/jbr/springboot/restapi/service/ProductService.java

@@ -1,10 +1,6 @@
 package jbr.springboot.restapi.service;
 
 import java.util.List;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
-import org.springframework.stereotype.Service;
 
 import jbr.springboot.restapi.model.Product;
 
@@ -14,38 +10,14 @@
  * @author Ranjith Sekar
  * @since 2018, Jun 20
  */
-@Service
-public class ProductService {
-
-  List<Product> products = Stream.of(new Product("100", "Galaxy S8", "Mobile", "50000"),
-      new Product("200", "Honda Shine", "Vehicle", "60000"), new Product("300", "Dell Vostro", "Laptop", "75000"))
-      .collect(Collectors.toList());
-
-  public List<Product> getAllProducts() {
-    return products;
-  }
-
-  public Product getProductById(String id) {
-    return products.stream().filter(e -> e.getId().equals(id)).findFirst().get();
-  }
+public interface ProductService {
+  List<Product> getAllProducts();
 
-  public void addProduct(Product product) {
-    products.add(product);
-  }
+  Product getProductById(String id);
 
-  public void updateProduct(Product product, String id) {
-    System.out.println(product.toString());
-    for (int i = 0; i < products.size(); i++) {
-      Product currentProduct = products.get(i);
+  void addProduct(Product product);
 
-      if (currentProduct.getId().equals(id)) {
-        products.set(i, product);
-        return;
-      }
-    }
-  }
+  void updateProduct(Product product, String id);
 
-  public void delete(String id) {
-    products.remove(getProductById(id));
-  }
+  void deleteProduct(String id);
 }

sboot-rest/src/main/java/jbr/springboot/restapi/service/ProductServiceImpl.java

@@ -0,0 +1,42 @@
+package jbr.springboot.restapi.service;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import jbr.springboot.restapi.dao.ProductRepository;
+import jbr.springboot.restapi.model.Product;
+
+@Service
+public class ProductServiceImpl implements ProductService {
+
+  @Autowired
+  private ProductRepository productRepository;
+
+  @Override
+  public List<Product> getAllProducts() {
+    return productRepository.findAll();
+  }
+
+  @Override
+  public Product getProductById(String id) {
+    return productRepository.findById(id).get();
+  }
+
+  @Override
+  public void addProduct(Product product) {
+
+  }
+
+  @Override
+  public void updateProduct(Product product, String id) {
+
+  }
+
+  @Override
+  public void deleteProduct(String id) {
+
+  }
+
+}

sboot-rest/src/main/resources/application.yml

@@ -0,0 +1,16 @@
+server:
+  servlet:
+    context-path: /springboot-restapi
+  port: 6060
+
+spring:
+  datasource:
+    driver-class-name: org.h2.Driver
+    url: jdbc:h2:mem:testdb
+    username: ranjith
+    password: sekar
+
+  h2:
+    console:
+      path: /h2-console
+      enabled: true

sboot-rest/src/main/resources/data.sql

@@ -0,0 +1,5 @@
+INSERT INTO product(id, name, category, price) VALUES('100', 'Samsung S8', 'Mobile', '75000');
+INSERT INTO product(id, name, category, price) VALUES('200', 'Usha Fan', 'Fan', '6000');
+INSERT INTO product(id, name, category, price) VALUES('300', 'Dell Vostro', 'Laptop', '79000');
+INSERT INTO product(id, name, category, price) VALUES('400', 'IFB Washer', 'Washing Machine', '25000');
+INSERT INTO product(id, name, category, price) VALUES('500', 'Redmi 8', 'Mobile', '5000');