SSM整合——实现图书的查询功能

其他 2020-01-25 10:55:18 阅读次数: 0

这里以图书查询的功能为例子，来进行SSM的整合，从创建数据库，到导入jar包，一步一步的进行整合，直到能跑为止，我也是初学SSM整合，这里只是给出了能跑起来的代码，里面有简单的注释，并没有详细讲解原理，希望能帮到初学SSM整合的朋友，这些东西，可以拷过去直接用。

目录

首先给出整体的架构

创建数据库

导入maven依赖

opjo

dao层 

service层

controller层

resource

BookMapper.xml

mybatis-config.xml 

database.properties 

spring-dao.xml 

spring-service.xml 

spring-mvc.xml 

applicationContext.xml 

jsp文件

部署到Tomcat上运行

首先给出整体的架构

创建数据库

这里导出了数据库文件，可以直接使用，这里给出关于数据库的导入和导出问题

-- MySQL dump 10.13  Distrib 8.0.17, for Win64 (x86_64)
--
-- Host: localhost    Database: ssmbuild
-- ------------------------------------------------------
-- Server version	8.0.17

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!50503 SET NAMES utf8mb4 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `books`
--

DROP TABLE IF EXISTS `books`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!50503 SET character_set_client = utf8mb4 */;
CREATE TABLE `books` (
  `bookId` int(11) NOT NULL AUTO_INCREMENT,
  `bookName` varchar(255) DEFAULT NULL,
  `bookCount` int(11) DEFAULT NULL,
  `bookDetail` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`bookId`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `books`
--

LOCK TABLES `books` WRITE;
/*!40000 ALTER TABLE `books` DISABLE KEYS */;
INSERT INTO `books` VALUES (1,'Java',1,'从入门到放弃'),(2,'MySQL',10,'从删库到跑路'),(3,'Linux',5,'从入门到入狱');
/*!40000 ALTER TABLE `books` ENABLE KEYS */;
UNLOCK TABLES;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2020-01-18 16:41:28

导入maven依赖

数据库导入成功之后，接下来开始创建一个maven项目，这里给出需要导入的依赖

<?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>ssmbuild</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <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>8.0.17</version>
        </dependency>

<!--        数据库连接池-->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <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>

        <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>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
    </dependencies>
</project>

opjo

依赖导入完毕后，是pojo中的实体类

package com.zhiying.pojo;

public class Books {
    private int bookId;
    private String bookName;
    private int bookCount;
    private String bookDetail;

    public Books() {
    }

    public Books(int bookId, String bookName, int bookCount, String bookDetail) {
        this.bookId = bookId;
        this.bookName = bookName;
        this.bookCount = bookCount;
        this.bookDetail = bookDetail;
    }

    public int getBookId() {
        return bookId;
    }

    public void setBookId(int bookId) {
        this.bookId = bookId;
    }

    public String getBookName() {
        return bookName;
    }

    public void setBookName(String bookName) {
        this.bookName = bookName;
    }

    public int getBookCount() {
        return bookCount;
    }

    public void setBookCount(int bookCount) {
        this.bookCount = bookCount;
    }

    public String getBookDetail() {
        return bookDetail;
    }

    public void setBookDetail(String bookDetail) {
        this.bookDetail = bookDetail;
    }

    @Override
    public String toString() {
        return "Books{" +
                "bookId=" + bookId +
                ", bookName='" + bookName + '\'' +
                ", bookCount=" + bookCount +
                ", bookDetail='" + bookDetail + '\'' +
                '}';
    }
}

dao层 

package com.zhiying.dao;

import com.zhiying.pojo.Books;

import java.util.List;

public interface BookMapper {
    public int addBook(Books books);
    public int deleteBookById(int bookId);
    public int updateBook(Books books);
    public Books queryBookById(int bookId);
    public List<Books> queryAllBook();
}

service层

package com.zhiying.service;

import com.zhiying.pojo.Books;

import java.util.List;

public interface BookService {
    public int addBook(Books books);
    public int deleteBookById(int bookId);
    public int updateBook(Books books);
    public Books queryBookById(int bookId);
    public List<Books> queryAllBook();
}

package com.zhiying.service;

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

import java.util.List;

public class BookServiceImpl implements BookService {

    //service调dao层
    private BookMapper bookMapper;

    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

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

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

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

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

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

controller层

package com.zhiying.controller;

import com.zhiying.pojo.Books;
import com.zhiying.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.List;

@Controller
@RequestMapping("/book")
public class BookController {
    //controller调用service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    @RequestMapping("/allBook")
    public String list(Model model) {
        List<Books> list = bookService.queryAllBook();
        model.addAttribute("list", list);
        return "allBook";
    }
}

resource

BookMapper.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.zhiying.dao.BookMapper">
    <insert id="addBook" parameterType="Books">
        insert into books (bookName, bookCount, bookDetail)
        values (#{bookId}, #{bookCount}, #{bookDetail})
    </insert>

    <delete id="deleteBook" parameterType="int">
        delete from books where bookId = #{bookId}
    </delete>
    
    <update id="updateBook" parameterType="Books">
        update books
        set bookName = #{bookName}, bookCount = #{bookCount}, bookDetail = #{bookDetail}
        where bookId = #{bookId}
    </update>
    
    <select id="queryBookById" resultType="Books">
        select * from books where bookId = #{bookId}
    </select>

    <select id="queryAllBook" resultType="Books">
        select * from books
    </select>
</mapper>

mybatis-config.xml 

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <typeAliases>
        <package name="com.zhiying.pojo"/>
    </typeAliases>

    <mappers>
        <mapper resource="BookMapper.xml"/>
    </mappers>

</configuration>

database.properties 

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
jdbc.username=root
jdbc.password=root

spring-dao.xml 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

<!--    关联数据库文件-->
    <context:property-placeholder location="classpath:database.properties"/>
<!--    连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
<!--    sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
<!--        绑定mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

<!--    配置dao接口扫描包，动态的实现dao接口可以注入到spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--        注入sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--        要扫描的包-->
        <property name="basePackage" value="com.zhiying.dao"/>
    </bean>
</beans>

spring-service.xml 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">

<!--    扫描service下的包-->
    <context:component-scan base-package="com.zhiying.service"/>
<!--    将我们的所有业务可以通过注解实现-->
    <bean id="BookServiceImpl" class="com.zhiying.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>
<!--    声明式事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

</beans>

spring-mvc.xml 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">
<!--注解驱动-->
    <mvc:annotation-driven/>
<!--    静态资源过滤-->
    <mvc:default-servlet-handler/>
<!--    扫描包-->
    <context:component-scan base-package="com.zhiying.controller"/>
<!--    视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

applicationContext.xml 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <import resource="classpath:spring-dao.xml"/>
    <import resource="classpath:spring-service.xml"/>
    <import resource="classpath:spring-mvc.xml"/>

</beans>

jsp文件

最后是jsp文件

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>书籍展示</title>
<%--    BootStrap--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<h1>书籍展示</h1><br/><br/>

<table class="table table-hover table-striped">
    <thead>
        <tr>
            <th>书籍编号</th>
            <th>书籍名称</th>
            <th>书籍数量</th>
            <th>书籍详情</th>
        </tr>
    </thead>

    <tbody>
        <c:forEach var="book" items="${list}">
            <tr>
                <td>${book.bookId}</td>
                <td>${book.bookName}</td>
                <td>${book.bookCount}</td>
                <td>${book.bookDetail}</td>
            </tr>
        </c:forEach>
    </tbody>
</table>
</body>
</html>

部署到Tomcat上运行

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