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@@ -14,86 +14,87 @@ import java.util.List;
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// dao层 对数据增删改查的一层
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// dao层 对数据增删改查的一层
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//@Component
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//@Component
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// @Repository 是一个具体的@Component 是操作数据库的bean
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// @Repository 是一个具体的@Component 是操作数据库的bean
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-@Repository("bookDao")
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-public class BookDaoImpl implements BookDao {
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- @Autowired
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- private JdbcTemplate jdbcTemplate;
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-
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- @Override
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- public List<Book> findAll() {
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- List<Book> bookList = jdbcTemplate.
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- query("select * from book", new BeanPropertyRowMapper<Book>(Book.class));
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- return bookList;
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- }
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-
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- @Override
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- public int insert(Book book) {
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- String sql = """
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- insert into book(book_id,book_name,type_id,author_id,author_name,book_img,book_desc)
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- values(?,?,?,?,?,?,?)
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- """;
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- Object[] args = {book.getBookId(), book.getBookName(), book.getTypeId(),
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- book.getAuthorId(), book.getAuthorName(), book.getBookImg(), book.getBookDesc()};
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- int update = jdbcTemplate.update(sql, args);
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- return update;
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- }
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-
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- @Override
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- public Book findOne(String bookId) {
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- Book book = jdbcTemplate.queryForObject("select * from book where book_id = ?",
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- new BeanPropertyRowMapper<Book>(Book.class), bookId);
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- return book;
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- }
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-
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- @Override
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- public int delete(Book book) {
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- // id book_id
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- String sql = """
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- delete from book where book_id = ?
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- """;
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- Object[] args = {book.getBookId()};
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- int update = jdbcTemplate.update(sql, args);
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- return update;
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- }
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-
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- @Override
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- public int deleteById(String bookId) {
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- String sql = """
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- delete from book where book_id = ?
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- """;
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- int update = jdbcTemplate.update(sql, bookId);
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- return update;
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- }
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-
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- @Override
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- public String findAuthorIdById(String bookId) {
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- // 找到一行数据 或者 一个数据
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- Book book = jdbcTemplate.queryForObject(
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- "select * from book where book_id = ?",
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- new BeanPropertyRowMapper<Book>(Book.class), bookId
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- );
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- System.out.println(book);
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-
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- String authorId = jdbcTemplate.queryForObject(
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- "select author_id from book where book_id = ?",
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-// new BookRowMapper(), bookId
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- new SingleColumnRowMapper<>(String.class), bookId
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- );
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- System.out.println(authorId);
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-
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- return book.getAuthorId();
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- }
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-
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- static class BookRowMapper implements RowMapper<String> {
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- public static final BookRowMapper INSTANCE = new BookRowMapper();
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-
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- private BookRowMapper() {
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- }
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-
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- @Override
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- public String mapRow(ResultSet rs, int rowNum) throws SQLException {
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- return rs.getString("author_id");
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- }
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- }
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-}
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+//@Repository("bookDao")
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+//public class BookDaoImpl implements BookDao {
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+//
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+// @Autowired
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+// private JdbcTemplate jdbcTemplate;
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+//
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+// @Override
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+// public List<Book> findAll() {
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+// List<Book> bookList = jdbcTemplate.
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+// query("select * from book", new BeanPropertyRowMapper<Book>(Book.class));
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+// return bookList;
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+// }
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+//
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+// @Override
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+// public int insert(Book book) {
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+// String sql = """
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+// insert into book(book_id,book_name,type_id,author_id,author_name,book_img,book_desc)
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+// values(?,?,?,?,?,?,?)
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+// """;
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+// Object[] args = {book.getBookId(), book.getBookName(), book.getTypeId(),
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+// book.getAuthorId(), book.getAuthorName(), book.getBookImg(), book.getBookDesc()};
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+// int update = jdbcTemplate.update(sql, args);
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+// return update;
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+// }
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+//
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+// @Override
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+// public Book findOne(String bookId) {
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+// Book book = jdbcTemplate.queryForObject("select * from book where book_id = ?",
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+// new BeanPropertyRowMapper<Book>(Book.class), bookId);
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+// return book;
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+// }
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+//
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+// @Override
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+// public int delete(Book book) {
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+// // id book_id
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+// String sql = """
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+// delete from book where book_id = ?
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+// """;
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+// Object[] args = {book.getBookId()};
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+// int update = jdbcTemplate.update(sql, args);
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+// return update;
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+// }
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+//
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+// @Override
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+// public int deleteById(String bookId) {
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+// String sql = """
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+// delete from book where book_id = ?
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+// """;
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+// int update = jdbcTemplate.update(sql, bookId);
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+// return update;
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+// }
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+//
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+// @Override
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+// public String findAuthorIdById(String bookId) {
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+// // 找到一行数据 或者 一个数据
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+// Book book = jdbcTemplate.queryForObject(
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+// "select * from book where book_id = ?",
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+// new BeanPropertyRowMapper<Book>(Book.class), bookId
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+// );
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+// System.out.println(book);
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+//
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+// String authorId = jdbcTemplate.queryForObject(
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+// "select author_id from book where book_id = ?",
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+//// new BookRowMapper(), bookId
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+// new SingleColumnRowMapper<>(String.class), bookId
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+// );
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+// System.out.println(authorId);
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+//
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+// return book.getAuthorId();
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+// }
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+//
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+// static class BookRowMapper implements RowMapper<String> {
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+// public static final BookRowMapper INSTANCE = new BookRowMapper();
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+//
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+// private BookRowMapper() {
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+// }
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+//
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+// @Override
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+// public String mapRow(ResultSet rs, int rowNum) throws SQLException {
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+// return rs.getString("author_id");
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+// }
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+// }
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+//}
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