基于Mybatis的bookstore架构模型

总共分为Control,dao,enter,entity,service,util,view这几层。同时还含有一个mapperconfig.xml文件。

1，mapperconfig.xml

这里面用来配置相关数据库的连接和mapper的resource

  <configuration>
     <settings>
         <setting name="cacheEnabled" value="true"/>
     </settings>
     <environments default="test">
         <environment id="test">
             <transactionManager type="JDBC"></transactionManager>
             <dataSource type="POOLED">
                 <property name="driver" value="com.mysql.jdbc.Driver"/>
                 <property name="url" value="jdbc:mysql://localhost:3306/bookstore?characterEncoding=UTF-8"/>
                 <property name="username" value="***"/>
                 <property name="password" value="****"/>
             </dataSource>
         </environment>
     </environments>
     <mappers>
         <mapper resource="com/chinasofti/bookstore/dao/TypesDao.xml"/>
         <mapper resource="com/chinasofti/bookstore/dao/BookDao.xml"/>
     </mappers>
 </configuration>

2，entity

这是实体类，没什么好说的。就是javabean掌握好就好。总共book和type两个实体类。

1(book)

 package com.chinasofti.bookstore.entity;

 public class Book {
     private int bid;
     private String bname;
     private String author;
     private String descn;
     private int price;
     private int num;
     private Types t;

     public Book(int bid, String bname, String author, String descn, int price, int num, Types t) {
         this.bid = bid;
         this.bname = bname;
         this.author = author;
         this.descn = descn;
         this.price = price;
         this.num = num;
         this.t = t;
     }

     public Book(String bname, String author, String descn, int price, int num, Types t) {
         this.bname = bname;
         this.author = author;
         this.descn = descn;
         this.price = price;
         this.num = num;
         this.t = t;
     }

     public Book() {
     }

     public int getBid() {
         return bid;
     }

     public void setBid(int bid) {
         this.bid = bid;
     }

     public String getBname() {
         return bname;
     }

     public void setBname(String bname) {
         this.bname = bname;
     }

     public String getAuthor() {
         return author;
     }

     public void setAuthor(String author) {
         this.author = author;
     }

     public String getDescn() {
         return descn;
     }

     public void setDescn(String descn) {
         this.descn = descn;
     }

     public int getPrice() {
         return price;
     }

     public void setPrice(int price) {
         this.price = price;
     }

     public int getNum() {
         return num;
     }

     public void setNum(int num) {
         this.num = num;
     }

     public Types getT() {
         return t;
     }

     public void setT(Types t) {
         this.t = t;
     }

     @Override
     public String toString() {
         return "Book{" +
                 "bid=" + bid +
                 ", bname='" + bname + '\'' +
                 ", author='" + author + '\'' +
                 ", descn='" + descn + '\'' +
                 ", price=" + price +
                 ", num=" + num +
                 ", t=" + t +
                 '}';
     }
 }

2(type)

package com.chinasofti.bookstore.entity;

import java.io.Serializable;

public class Types implements Serializable {
    private int tid;
    private String tname;

    public Types(int tid, String tname) {
        this.tid = tid;
        this.tname = tname;
    }

    public Types() {
    }

    public int getTid() {
        return tid;
    }

    public void setTid(int tid) {
        this.tid = tid;
    }

    public String getTname() {
        return tname;
    }

    public void setTname(String tname) {
        this.tname = tname;
    }

    @Override
    public String toString() {
        return "Types{" +
                "tid=" + tid +
                ", tname='" + tname + '\'' +
                '}';
    }
}

3,dao

bookdao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.chinasofti.bookstore.dao.BookDao">
    <resultMap id="book" type="com.chinasofti.bookstore.entity.Book">
        <id property="bid" column="BID"/>
        <result property="bname" column="BNAME"/>
        <result property="descn" column="DESCN"/>
        <result property="author" column="author"/>
        <result property="price" column="PRICE"/>
        <result property="num" column="num"/>
    </resultMap>
    <resultMap id="booktypes" type="com.chinasofti.bookstore.entity.Book" extends="book">
        <association property="t" javaType="com.chinasofti.bookstore.entity.Types">
            <id property="tid" column="TID"/>
            <result property="tname" column="TNAME"/>
        </association>
    </resultMap>
    <insert id="insert" parameterType="com.chinasofti.bookstore.entity.Book">
        insert into book (bid,bname,author,descn,price,num,tid) values (#{bid},#{bname},#{author},#{descn},#{price},#{num},#{t.tid});
    </insert>
    <delete id="delectById" parameterType="int">
        delete from book where bid=#{bid}
    </delete>
    <select id="selectByName" parameterType="string" resultMap="booktypes">
             select *from (select *from book where bname=#{bname}) b ,types t where b.bid=t.tid
    </select>
    <select id="selectAll" resultMap="booktypes">
        select*from book b left join types t on bname=#{bname}and b.bid=t.tid
    </select>
    <update id="update" parameterType="com.chinasofti.bookstore.entity.Book">
        update book <set>
        <if test="bname!=null">bname=#{bname},</if>
        <if test="author!=null">author=#{author},</if>
        <if test="descn!=null">descn=#{descn},</if>
        <if test="price!=null">price=#{price},</if>
        <if test="num!=null">num=#{num},</if>
    </set>
    where bid=#{bid}
    </update>
</mapper>

bookdao(接口)

package com.chinasofti.bookstore.dao;

import com.chinasofti.bookstore.entity.Book;

import java.util.List;

public interface BookDao {
    int insert(Book book);
    int delectById(int bid);
    int update(Book book);
    List<Book> selectAll();
    Book selectByName(String bname);
}

typedao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.chinasofti.bookstore.dao.TypesDao">
    <cache/>
    <sql id="ty">tid,tname</sql>
    <resultMap id="tp" type="com.chinasofti.bookstore.entity.Types">
        <id property="tid" column="TID"/>
        <result property="tname" column="TNAME"/>
    </resultMap>
    <insert id="inserttype" parameterType="string">
        insert into types(tname) values (#{tname});
    </insert>
    <delete id="deleteById" parameterType="int">
        delete from types where tid=#{tid}
    </delete>
    <select id="selectAll" resultMap="tp">
        select <include refid="ty"/> from types
    </select>
    <select id="selectByName" parameterType="string" resultMap="tp">
        select <include refid="ty"/> from types where tname=#{tname}
    </select>
</mapper>

typedao

package com.chinasofti.bookstore.dao;

import com.chinasofti.bookstore.entity.Types;

import java.util.List;

public interface TypesDao {
    int inserttype(String tname);
    int deleteById(int tid);
    List<Types> selectAll();
    Types selectByName(String name);
}

4，service

bookservice

package com.chinasofti.bookstore.service;

import com.chinasofti.bookstore.dao.BookDao;
import com.chinasofti.bookstore.entity.Book;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.util.List;

public class BookService {
    private SqlSessionFactory factory;
    private SqlSession session;
    private BookDao dao;
    public BookService(){
        try {
            factory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("sqlconfig.xml"));
            session = factory.openSession();
            dao = session.getMapper(BookDao.class);
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("sqlsession创建失败");
        }
    }
    public String addBook(Book book){
        Book b = dao.selectByName(book.getBname());
        if (b!=null){
            return "该书以存在";
        }
        String s= dao.insert(book)>0?"添加成功":"添加失败";
        session.commit();
        return s;
    }
    public List<Book> findAll(){
        return dao.selectAll();
    }
    public String remove(int bid){
        String s=dao.delectById(bid)>0?"删除成功":"删除失败";
        session.commit();
        return s;
    }
    public String change(Book book){
        String s=dao.update(book)>0?"修改成功":"修改失败";
        session.commit();
        return s;
    }
}

typeservice

package com.chinasofti.bookstore.service;

import com.chinasofti.bookstore.dao.TypesDao;
import com.chinasofti.bookstore.entity.Types;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.util.List;

public class TypesService {
    private SqlSessionFactory factory;
    private SqlSession session;
    private TypesDao dao;
   public TypesService(){
       try {
           factory=new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("sqlconfig.xml"));
           session = factory.openSession();
           dao = session.getMapper(TypesDao.class);
       } catch (IOException e) {
           e.printStackTrace();
           System.out.println("创建失败");
       }
   }
   public String addType(String tname){
       Types t = dao.selectByName(tname);
       if (t!=null){
           return "该类别已存在，请重新输入";
       }
       if (dao.inserttype(tname)>0){
               session.commit();
           return "添加成功";
       }else {
           return "添加失败";
       }
   }
   public List<Types> findAll(){
       return dao.selectAll();
   }
   public String remove(int tid){
       String s=dao.deleteById(tid)>0?"删除成功":"删除失败";
       session.commit();
       return s;
   }
   public Types findByName(String tname){
       return dao.selectByName(tname);
   }
}

5，util

package com.chinasofti.bookstore.util;

import java.util.Scanner;

public class UserInput {
    //创造用于接收用户输入整数的方法
    public static int getInt(String wang){
        System.out.println(wang);
        while (true){
            Scanner sc=new Scanner(System.in);
            try {
                return sc.nextInt();
            }
            catch (Exception e){
                System.out.println("对不起，输入格式不正确,请重新输入");
            }
        }
    }
    public static double getDouble(String wang){
        System.out.println(wang);
        while (true){
            Scanner sc=new Scanner(System.in);
            try {
                return sc.nextDouble();
            }
            catch (Exception e){
                System.out.println("对不起，输入格式不正确,请重新输入");
            }
        }
    }
    public static String  getString(String wang){
        System.out.println(wang);
        Scanner sc=new Scanner(System.in);
        return sc.next();

    }
}

6，view

package com.chinasofti.bookstore.view;

import com.chinasofti.bookstore.entity.Types;

import java.util.List;

/*输出界面
* 图书管理
1、添加图书类别
2、显示图书类别
3、删除图书类别
4、添加图书
5、查询图书
6、删除图书
7、修改图书
8、根据类别查询图书*/
public class View {
    public static void welcome(){
        System.out.println("---------欢迎来到我的世界--------------");
        System.out.println("1、添加图书类别");
        System.out.println("2、显示图书类别");
        System.out.println("3、删除图书类别");
        System.out.println("4、添加图书");
        System.out.println("5、查询图书");
        System.out.println("6、删除图书");
        System.out.println("7、修改图书");
        System.out.println("8、根据类别查询图书");
        System.out.println("---------------------------------------");
    }
    public static void showType(List<Types> all){
        System.out.println("所有类别如下");
        System.out.println("编号\t名称");
        for (Types t:all){
            System.out.println(t.getTid()+"\t"+t.getTname());
        }
    }
}

7，control（业务逻辑只写了一个，其余的依葫芦画瓢就好）

package com.chinasofti.bookstore.control;

import com.chinasofti.bookstore.entity.Book;
import com.chinasofti.bookstore.entity.Types;
import com.chinasofti.bookstore.service.BookService;
import com.chinasofti.bookstore.service.TypesService;
import com.chinasofti.bookstore.util.UserInput;
import com.chinasofti.bookstore.view.View;

import java.util.List;

public class Control {
    private BookService service;
    private TypesService typesService;
    public Control() {
        this.service = new BookService();
        this.typesService=new TypesService();
    }

    public  void start(){
        //显示主界面
        View.welcome();
        //接收用户输入的指令
        int select = UserInput.getInt("请选择");
        if (select<=0){
            System.out.println("欢迎下次再来，886");
            System.exit(0);
        }else if(select==4){
        this.addbook();
        }
    }

    private void addbook() {
        System.out.println("-----------请添加图书--------------");
        View.showType(this.typesService.findAll());
        System.out.println(this.service.addBook(new Book(
                UserInput.getString("请输入书名"),
                UserInput.getString("请输入图书的作者"),
                UserInput.getString("请输入图书的描述"),
                UserInput.getInt("请输入图书的价格"),
                UserInput.getInt("请输入图书的数量"),
                typesService.findByName(UserInput.getString("请输入类别名称"))
        )));
    }
}