SSM整合——实现书籍的增删改查

ssm整合

1、前提准备工作

数据库

CREATE DATABASE `ssmbuild`;
USE ssmbuild;
CREATE TABLE `books` (
    `bookid` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
    `bookname` VARCHAR(100) NOT NULL COMMENT '书名',
    `bookcount` INT(11) NOT NULL COMMENT '数量',
    `dateail` VARCHAR(200) NOT NULL COMMENT '描述',
     KEY `bookid` (`bookid`)
    )ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT INTO books VALUE(1,'java',1,'从入门到放弃'),(2,'mysql',10,'从删除到跑路'),(3,'python',5,'从入门到大神');

pom.xml(相关的iar导入和静态资源导入)

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.3.4</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.13.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.23</version>
    </dependency>
    <!--数据库连接池-->
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.5</version>
    </dependency>
    <!--jsp-->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.6</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.0.6</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.3.4</version>
    </dependency>
     <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.18</version>
        </dependency>
</dependencies>
<!--静态资源导入-->
<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>

连接数据库mysql，

ssm整合mybatis层

　1、配置文件的编写    

mybatis-config.xml

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

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

</configuration>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xs">
</beans>

database.properties 连接数据库，数据源

jdbc.driver=com.mysql.cj.jdbc.Driver
#如果使用的mysql8.0+ ，就要增加时区的配置：&serverTimezone=CMT
jdbc.url=jdbc:mysql://localhost:3306/ssmbulid?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

2、创建pojo包，dao包，controller包，service包

Books.java 实体类pojo

package com.zy.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    private int bookid;
    private String bookname;
    private int bookcount;
    private String dateail;
}

BooksMapper.java 实体接口dao包

package com.zy.dao;

import com.zy.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BookMapper {
    //增加一本书
    int addbook(Books books);
    //删除一本书
    int deletebook(@Param("bookid") int id);
    //更新一本书
    int updatebook(Books books);
    //查询一本书
    Books selectbook(@Param("bookid") int id);
    //查询全部书
    List<Books> allbook();
}

对应的 BooksMapper.java接口的xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zy.dao.BookMapper">
    <insert id="addbook" parameterType="com.zy.pojo.Books">
        insert into books(bookname,bookcount,dateail)
        values (#{bookname},#{bookcount},#{dateail})
    </insert>
    <delete id="deletebook" parameterType="int">
        delete from books where bookid=#{bookid}
    </delete>
    <update id="updatebook" parameterType="com.zy.pojo.Books">
        update books set bookname=#{bookname},bookcount=#{bookcount},dateail=#{dateail}
         where bookid=#{bookid} ;
    </update>
    <select id="selectbook" resultType="com.zy.pojo.Books">
        select * from books where id=#{bookid}
    </select>
    <select id="allbook" resultType="com.zy.pojo.Books">
        select * from books
   </select>
</mapper>

BookService .java service层，用于调用dao层

package com.zy.service;

import com.zy.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.util.List;
@service
public interface BookService {
    //增加一本书
    int addbook(Books books);
    //删除一本书
    int deletebook( int id);
    //更新一本书
    int updatebook(Books books);
    //查询一本书
    Books selectbook(int id);
    //查询全部书
    List<Books> allbook();
}

对应的BookService .java接口的xml文件

package com.zy.service;

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

import java.util.List;

public class BookServiceImpl implements BookService{
    //server调用dao层，组合dao
    private BookMapper bookMapper;
    public void setBookMapper(BookMapper bookMapper){
        this.bookMapper=bookMapper;
    }
    @Override
    public int addbook(Books books) {
        return bookMapper.addbook(books);
    }

    @Override
    public int deletebook(int id) {
        return bookMapper.deletebook(id);
    }

    @Override
    public int updatebook(Books books) {
        return bookMapper.updatebook(books);
    }

    @Override
    public Books selectbook(int id) {
        return bookMapper.selectbook(id);
    }

    @Override
    public List<Books> allbook() {
        return bookMapper.allbook();
    }
}

ssm整合spring层

编写spring相关的配置文件，

spring-dao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xs">
        <!--1、关联数据库配置文件-->
            <context:property-placeholder location="classpath:database.properties"/>
        <!--2、连接池
                dbcp   半自动化，不能自动连接
                c3p0 自动化操作 (自动化的加载配置文件，并且可以自动设置到对象中
                druid
                hikari
        -->
            <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}"/>

                <!--c3p0连接词的私有属性-->
                <property name="maxPoolSize" value="30"/>
                <property name="minPoolSize" value="10"/>
                <!--关闭连接后不自动commint-->
                <property name="autoCommitOnClose" value="false"/>
                <!--获取连接超时时间-->
                <property name="checkoutTimeout" value="10000"/>
                <!--当获取连接失败重试次数-->
                <property name="acquireRetryAttempts" value="2"/>
            </bean>
        <!--3、sqlsessionfactory-->
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"/>
            <!--绑定mybatis的配置文件-->
            <property name="configLocation" value="classpath:mybatis-config.xml"/>
        </bean>

        <!--配置到接口的扫描包，动态的实现了到接口可以注入到spring容器中-->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <!--注入salSessionFactory-->
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
            <!--要扫描的dao包-->
            <property name="basePackage" value="com.zy.dao"/>

        </bean>
</beans>

spring-service.xml

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xs">

    <!--1、扫描service下的包-->
    <context:component-scan base-package="com.zy.service"/>

    <!--2、将我们的所有业务类，注入到spring，可以通过配置或者通过注解实现-->
    <bean id="BookServiceImpl" class="com.zy.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--3、声明式事务配置-->
    <bean id="TransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>
        <!--4、aop事务支持-->
</beans>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xs">
    
    <import resource="classpath:spring-dao.xml"/>
    <import resource="classpath:spring-service.xml"/>
</beans>

ssm整合springmvc层

编写springmvc相关的配置文件，

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <!--DispatchServlet-->
    <servlet>
        <servlet-name>sprignmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
           <!-- <param-value>classpath:spring-mvc.xml</param-value>-->
             <param-value>classpath:com/zy/config/applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>sprignmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!--乱码过滤-->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!--session过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

spring-mvc.xml

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xs">

      <!--自动扫描包，让指定包下的注解生效，由IOC容器统一管理-->
    <context:component-scan base-package="com.zy.controller"/>
    <!--让spring mvc不处理静态资源-->
    <mvc:default-servlet-handler/>
    <!--支持mvc注解驱动
        在spring中一般采用@RequestMapping注解来完成映射关系
        要向使@RequestMapper注解生效
        必须向上下文中注册DefaultAnnotationHandlerMapping和一个
        AnnotationMethodHandlerAdapter实例
        这个两个实例分别在类级别和方法级别处理
        而annotation-driven配置帮助我们自动完成上述两个实例的注入-->
    <mvc:annotation-driven/>
    <!--4、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

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

ssm整合：设置查询书籍功能

BookController.java     编写controller的代码，

package com.zy.controller;

import com.zy.pojo.Books;
import com.zy.service.BookService;
import com.zy.service.BookServiceImpl;
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 层 调用  service层*/
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    /*查询全部的书籍，并且返回到一个书籍展示页面*/
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> list = bookService.allbook();
        model.addAttribute("list", list);
        return "allBook";

    }
}

编写前端代码

index.jsp 首页

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>首页</title>
    <style>
      h3{
        width: 180px;
        height: 38px;
        margin: 100px auto;
        text-align: center;
        line-height: 38px;
        background: skyblue;
        border-radius: 50px ;
      }
      a{
        text-decoration: none;
        color: black;
        font-size: 18px;
      }
    </style>
  </head>
  <body>
  <h3>
    <a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
  </h3>
  </body>
</html>

allbooks .jsp   跳转的书籍页面

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

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>书籍展示页面</title>
    <%--BootStrap美化界面--%>

    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <samp>书籍列表---显示所有书籍</samp>
                </h1>
            </div>
        </div>
    </div>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <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>
                    <%--书籍从数据库中查询出来，
                        从这个list中遍历出来：foreach--%>
                <c:forEach var="book" items="${list}">
                    <tr>
                        <td>${book.bookid}</td>
                        <td>${book.bookname}</td>
                        <td>${book.bookcount}</td>
                        <td>${book.dateail}</td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>

</div>

</body>
</html>

显示的结果为