添加用户收藏书籍、取消收藏书籍、获取书籍收藏状态功能（后端+数据库）；更新Api文档

bookshelfplus/src/main/java/plus/bookshelf/Dao/DO/UserFavoritesDO.java

@@ -0,0 +1,137 @@
+package plus.bookshelf.Dao.DO;
+
+import java.util.Date;
+
+public class UserFavoritesDO {
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column user_book_favorites_relation.id
+     *
+     * @mbg.generated
+     */
+    private Integer id;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column user_book_favorites_relation.user_id
+     *
+     * @mbg.generated
+     */
+    private Integer userId;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column user_book_favorites_relation.book_id
+     *
+     * @mbg.generated
+     */
+    private Integer bookId;
+
+    /**
+     *
+     * This field was generated by MyBatis Generator.
+     * This field corresponds to the database column user_book_favorites_relation.create_time
+     *
+     * @mbg.generated
+     */
+    private Date createTime;
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column user_book_favorites_relation.id
+     *
+     * @return the value of user_book_favorites_relation.id
+     *
+     * @mbg.generated
+     */
+    public Integer getId() {
+        return id;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column user_book_favorites_relation.id
+     *
+     * @param id the value for user_book_favorites_relation.id
+     *
+     * @mbg.generated
+     */
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column user_book_favorites_relation.user_id
+     *
+     * @return the value of user_book_favorites_relation.user_id
+     *
+     * @mbg.generated
+     */
+    public Integer getUserId() {
+        return userId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column user_book_favorites_relation.user_id
+     *
+     * @param userId the value for user_book_favorites_relation.user_id
+     *
+     * @mbg.generated
+     */
+    public void setUserId(Integer userId) {
+        this.userId = userId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column user_book_favorites_relation.book_id
+     *
+     * @return the value of user_book_favorites_relation.book_id
+     *
+     * @mbg.generated
+     */
+    public Integer getBookId() {
+        return bookId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column user_book_favorites_relation.book_id
+     *
+     * @param bookId the value for user_book_favorites_relation.book_id
+     *
+     * @mbg.generated
+     */
+    public void setBookId(Integer bookId) {
+        this.bookId = bookId;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method returns the value of the database column user_book_favorites_relation.create_time
+     *
+     * @return the value of user_book_favorites_relation.create_time
+     *
+     * @mbg.generated
+     */
+    public Date getCreateTime() {
+        return createTime;
+    }
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method sets the value of the database column user_book_favorites_relation.create_time
+     *
+     * @param createTime the value for user_book_favorites_relation.create_time
+     *
+     * @mbg.generated
+     */
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+}