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package com.vincent.demo;

import java.util.*;
import java.util.stream.Collectors;

public class JavaMain {

    public static void main(String[] args) {
        Set<Integer> selectedNumbers = new HashSet<>();
        Scanner scan = new Scanner(System.in);

ntub46010

package com.vincent.demo;

import java.util.*;

public class JavaMain {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        System.out.println("請輸入你的年齡");

ntub46010

// 找出name欄位值有包含參數的所有文件，且不分大小寫
List<Product> findByNameLikeIgnoreCase(String name);

// 找出id欄位值有包含在參數之中的所有文件
List<Product> findByIdIn(List<String> ids);

// 是否有文件的email欄位值等於參數
boolean existsByEmail(String email);

// 找出username與password欄位值皆符合參數的一筆文件

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// 查詢price欄位在特定範圍的文件（參數亦可使用Date）
// gte：大於等於；lte：小於等於；Between：大於及小於，兩者略有差異。
@Query("{'price': {'$gte': ?0, '$lte': ?1}}")
List<Product> findByPriceBetween(int from, int to);

// 查詢name字串欄位有包含參數的文件，不分大小寫
@Query("{'name': {'$regex': ?0, '$options': 'i'}}")
List<Product> findByNameLikeIgnoreCase(String name);

// 查詢同時符合上述兩個條件的文件

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// 回傳id欄位值有包含在參數之中的文件數量
@Query(value = "{'_id': {'$in': ?0}}", count = true)
int countByIdIn(List<String> ids);

// 回傳是否有文件的id欄位值包含在參數之中
@Query(value = "{'_id': {'$in': ?0}}", exists = true)
boolean existsByIdIn(List<String> ids);

// 刪除id欄位值包含在參數之中的文件
@Query(delete = true)

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@RestController
@RequestMapping("/products")
public class ProductController {

    @Autowired
    private ProductService productService;

    @GetMapping("/{id}")
    public ResponseEntity<Product> getProduct(@PathVariable("id") String id) {
        Product product = productService.getProduct(id);

ntub46010

@RestController
@RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
public class ProductController {

    @GetMapping("/products/{id}")
    public Product getProduct(@PathVariable("id") String id) {
        Product product = new Product();
        product.setId(id);
        product.setName("Romantic Story");
        product.setPrice(200);

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@GetMapping("/products/{id}")
public ResponseEntity<Product> getProduct(@PathVariable("id") String id) {
    Product product = new Product();
    product.setId(request.getId());
    product.setName(request.getName());
    product.setPrice(request.getPrice());

    return ResponseEntity.ok().body(product);
}

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@RestController
@RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
public class ProductController {

    private final List<Product> productDB = new ArrayList<>();

    @PostConstruct
    private void initDB() {
        productDB.add(new Product("B0001", "Android Development (Java)", 380));
        productDB.add(new Product("B0002", "Android Development (Kotlin)", 420));

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@PostMapping("/products")
public ResponseEntity<Product> createProduct(@RequestBody Product request) {
    boolean isIdDuplicated = productDB.stream()
            .anyMatch(p -> p.getId().equals(request.getId()));
    if (isIdDuplicated) {
        return ResponseEntity.status(HttpStatus.CONFLICT).build();
    }

    Product product = new Product();
    product.setId(request.getId());