JdbcTemplate整合(SpringBoot)

• 第一步:導入依賴

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.17</version>
    </dependency>

第二步

public class Book {
    private Integer id;
    private String name;
    private String author;
    private Float price;
//省略getter/setter

• 第三步:實現dao

@Repository
public class BookDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public int addBook(Book book){
        return jdbcTemplate.update("insert into book(name,author) values(?,?)",book.getName(),book.getAuthor());
    }

    public int updateBook(Book book){
        return jdbcTemplate.update("update book set name=?,author=? where id=?",book.getName(),book.getAuthor(), book.getId());
    }

    public int deleteBookById(Integer id){
        return jdbcTemplate.update("delete from book where id=?",id);
    }

    public Book getBookById(Integer id){
        return jdbcTemplate.queryForObject("select * from book where id=?",new BeanPropertyRowMapper<>(Book.class),id);
    }

    public List<Book> getAllBooks(){
        return jdbcTemplate.query("select * from book", new BeanPropertyRowMapper<>(Book.class));
    }

}

• 第四步:實現service

@Service
public class BookService {

    @Autowired
    BookDao bookDao;

    public int addBoot(Book book){
        return bookDao.addBook(book);
    }

    public int updateBook(Book book){
        return bookDao.updateBook(book);
    }

    public int deleteBookById(Integer id){
        return bookDao.deleteBookById(id);
    }

    public Book getBookByID(Integer id){
        return bookDao.getBookById(id);
    }

    public List<Book>getAllBooks(){
        return bookDao.getAllBooks();
    }

}

• 第五步:實現controller

  @RestController
  public class BookController {
  
      @Autowired
      BookService bookService;
  
     @GetMapping("/bookOps")
      public void  bookOps(){
          Book b1 = new Book();
          b1.setName("西廂記");
          b1.setAuthor("王師傅");
          int i = bookService.addBoot(b1);
         System.out.println("addBoot>>>"+i);
  
         Book b2 = new Book();
         b2.setId(1);
         b2.setName("朝花夕拾");
         b2.setAuthor("魯迅");
         int i2=bookService.updateBook(b2);
         System.out.println("updateBook>>>"+i2);
  
         Book b3=bookService.getBookByID(1);
         System.out.println("getBookByID>>>"+b3);
  
         List<Book>list = bookService.getAllBooks();
         System.out.println("getAllBooks>>>"+list);
      }
  
  
  }