简易图书管理系统

Posted 2021-10-31 z啵唧啵唧

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简易版图书管理系统

项目说明

图书管理系统，简单实现书籍的增删改查功能
基于狂神的ssm整合技术视频地址：【狂神说Java】SSM框架最新整合教学IDEA版_哔哩哔哩_bilibili
用于ssm技术复习回顾

使用技术

ssm框架技术

环境

IDEA
jdk1.8
mysql5.5
tomcat 9
maven 3.6

创建数据库环境

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT(11) NOT NULL COMMENT '数量',
`detail` VARCHAR(200) NOT NULL COMMENT '描述',
KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8

INSERT  INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

基本环境搭建

创建maven项目
添加web支持
导入相关依赖

pom.xml中相关依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>ssmbulid</artifactId>
    <version>1.0-SNAPSHOT</version>
    <!--依赖问题: junit ,数据库驱动 , 连接池 ，servlet，jsp，mybatis，mybatis-spring，spring-->
    <dependencies>
        <!--Junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!-- 数据库连接池 c3p0 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <!--Servlet - JSP -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!--Mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>

        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        
           <!--Spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.10</version>
        </dependency>
    </dependencies>

    <!--静态资源导出问题-->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>

    </build>
</project>

创建项目基本结构

com.zb.pojo

pojo层是实体类，用作对实体属性的封装

Books类

使用lombok插件！

package com.zb.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data                //get，set，tostring等方法
@AllArgsConstructor  //有参构造
@NoArgsConstructor   //无参构造
public class Books {
    private int bookID;  //书籍编号
    private String bookName;//书籍名称
    private int bookCounts;//书籍数量
    private String detail;//书籍详情
}

com.zb.dao

dao层主要是做数据持久层的工作，负责与数据库进行联络的一些任务都封装在此。

BookMapper接口

系统需要的一些功能

package com.zb.dao;

import com.zb.pojo.Books;
import org.apache.ibatis.annotatio ns.Param;

import java.util.List;

public interface BookMapper {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBookById(@Param("bookId") int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(@Param("bookId")int id);

    //查询全部书
    List<Books> queryAllBook();

    //根据名称查询书籍
    Books queryBookByName(@Param("bookName")String bookName);
}

BookerMapper.xml

这里面这要写的就是需要执行的sql语句

<?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.zb.dao.BookMapper">

     <!--插入书籍-->
    <insert id="addBook" parameterType="Books">
        insert into books(bookName,bookCounts,detail)
        values (#{bookName},#{bookCounts},#{detail});
    </insert>

    <!--通过书籍编号删除书籍-->
    <delete id="deleteBookById" parameterType="int">
        delete  from books where bookID=#{bookId}
    </delete>

    <!--修改书籍信息-->
    <update id="updateBook" parameterType="Books">
        update books set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
        where bookID=#{bookID};
    </update>

    <!--通过编号查询书籍-->
    <select id="queryBookById" resultType="Books">
        select * from books where bookID=#{bookId};
    </select>

    <!--查询所有书籍-->
    <select id="queryAllBook" resultType="Books">
        select * from books;
    </select>

    <!--通过书籍名称查询书籍-->
    <select id="queryBookByName" resultType="Books" parameterType="String">
        select * from books where bookName=#{bookName}
    </select>

</mapper>

com.zb.service

主要负责业务模块的逻辑应用设计,Service层的业务实现，具体要调用到已定义的DAO层的接口，封装Service层的业务逻辑有利于通用的业务逻辑的独立性和重复利用性，程序显得非常简洁。

BookService 接口

package com.zb.service;

import com.zb.pojo.Books;


import java.util.List;

public interface  BookService {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBookById( int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(int id);

    //查询全部书
    List<Books> queryAllBook();

    //根据名称查询书籍
    Books queryBookByName(String bookName);

}

BookServiceImpl作为BookService的接口

package com.zb.service;

import com.zb.dao.BookMapper;
import com.zb.pojo.Books;

import java.util.List;

public class BookServiceImpl implements BookService {
    //service层掉dao层 :组合Dao
    private BookMapper bookMapper;
    public void setBookMapper(BookMapper bookMapper)
    {
        this.bookMapper=bookMapper;
    }

    public int addBook(Books books) {
        return bookMapper.addBook(books);
    }

    public int deleteBookById(int id) {
        return bookMapper.deleteBookById(id);
    }

    public int updateBook(Books books) {
        return bookMapper.updateBook(books);
    }

    public Books queryBookById(int id) {
        return bookMapper.queryBookById(id);
    }

    public List<Books> queryAllBook() {
        return bookMapper.queryAllBook();
    }

    public Books queryBookByName(String bookName) {
        return bookMapper.queryBookByName(bookName);
    }
}

com.zb.controller

controller层为控制层，主要处理外部请求。调用service层，将service层返回的BO/DO转化为DTO/VO并封装成统一返回对象返回给调用方。如果返回数据用于前端模版渲染则返回VO，否则一般返回DTO。

BookController类用来调用service层

package com.zb.controller;


import com.zb.pojo.Books;
import com.zb.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.ArrayList;
import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {
    //使用controller调service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
    //查询全部书籍
    @RequestMapping("/allBook")
    public String list(Model model)
    {
        List<Books> list = bookService.queryAllBook();
        model.addAttribute("list",list);
        return "allBook";
    }
    //跳转到增加书籍功能
    @RequestMapping("/toAddBook")
    public String toAddBook()
    {
        return "addBook";
    }

    //增加书籍功能
    @RequestMapping("/addBook")
    public String addBook(Books books)
    {
        System.out.println("addBook"+books);
        bookService.addBook(books);
        return "redirect:/book/allBook";//重定向到@RequestMapping("/allBook")
    }
    //跳转到修改页面
    @RequestMapping("/toUpdata")
    public String toUpdata(int id,Model model)
    {
        Books books = bookService.queryBookById(id);
        model.addAttribute("Qbooks",books);
        return "upDataBook";
    }

    //修改书籍功能
    @RequestMapping("/Updatebook")
    public String Updatebook(Books books)
    {
        System.out.println("addBook"+books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";//重定向到@RequestMapping("/allBook")
    }

    //跳转到删除页面
    @RequestMapping("/toDelete")
    public String toDelete(int id,Model model)
    {
        Books books = bookService.queryBookById(id);
        model.addAttribute("Dbooks",books);
        return "DeleteBook";
    }

    //删除书籍功能
    @RequestMapping("/DeleteBook")
    public String DeleteBook(int id)
    {
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";//重定向到@RequestMapping("/allBook")
    }

    //查询书籍功能
    @RequestMapping("/queryBook")
    public String queryBook(Model model,String queryBookName)
    {
        Books books = bookService.queryBookByName(queryBookName);
        List<Books> list = new ArrayList<Books>();
        list.add(books);
        model.addAttribute("list",list);
        return "allBook";
    }


}

spring层

1.配置spring整合mybatis，数据库源采用c3p0连接池
2.编写spring整合mybatis相关的配置文件

spring-dao.xml

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