SpringMVC（六）：分层整合SSM

本文是按照狂神说的教学视频学习的笔记，强力推荐，教学深入浅出一遍就懂！b站搜索狂神说或点击下面链接

https://space.bilibili.com/95256449?spm_id_from=333.788.b_765f7570696e666f.2

源码已上传github：https://github.com/renzhongpei/ssmbuilder

环境搭建

版本：
- MySQL 8
- SpringMVC+Spring+Mybatis
- C3P0连接池

数据库建表

CREATE DATABASE `ssmbuild`;

`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1库到跑路'),

(3,'Linux',5,'从进门到进牢');

项目搭建

创建maven项目

1.pom.xml

导入依赖
静态资源发布管理（build）

    <!--导入依赖-->

    <dependencies>

        <!--jackson-->

        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-databind</artifactId>

            <version>2.10.3</version>

        </dependency>

        <!--spring-->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>5.2.5.RELEASE</version>

        </dependency>

        <!--spring connect to db-->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

            <version>5.2.5.RELEASE</version>

        </dependency>

        <!--aop-->

        <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->

        <dependency>

            <groupId>org.aspectj</groupId>

            <artifactId>aspectjweaver</artifactId>

            <version>1.9.5</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

            <version>8.0.19</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis</artifactId>

            <version>3.5.4</version>

        </dependency>

        <!--Mybatis and spring -->

        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis-spring</artifactId>

            <version>2.0.4</version>

        </dependency>

        <!--junit-->

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.11</version>

            <scope>test</scope>

        </dependency>

        <!--servlet依赖-->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>servlet-api</artifactId>

            <version>2.5</version>

        </dependency>

        <!--jsp依赖-->

        <dependency>

            <groupId>javax.servlet.jsp</groupId>

            <artifactId>jsp-api</artifactId>

            <version>2.1</version>

        </dependency>

        <!--jstl表达式-->

        <dependency>

            <groupId>javax.servlet.jsp.jstl</groupId>

            <artifactId>jstl-api</artifactId>

            <version>1.2</version>

        </dependency>

        <!--standard标签库-->

        <dependency>

            <groupId>taglibs</groupId>

            <artifactId>standard</artifactId>

            <version>1.1.2</version>

        </dependency>

        <!--log4j日志-->

        <dependency>

            <groupId>log4j</groupId>

            <artifactId>log4j</artifactId>

            <version>1.2.17</version>

        </dependency>

        <!-- 数据库连接池 -->

        <dependency>

            <groupId>com.mchange</groupId>

            <artifactId>c3p0</artifactId>

            <version>0.9.5.3</version>

        </dependency>

        <!--工具类，可以复制对象-->

        <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->

        <dependency>

            <groupId>commons-beanutils</groupId>

            <artifactId>commons-beanutils</artifactId>

            <version>1.9.4</version>

        </dependency>

    </dependencies>

    <build>

        <resources>

            <resource>

                <!--resources其实可以不配，因为会自动打包-->

                <directory>src/main/resources</directory>

                <includes>

                    <include>**/*.properties</include>

                    <include>**/*.xml</include>

                </includes>

                <filtering>true</filtering>

            </resource>

            <resource>

                <!--java下配置了properties文件就能自动打包-->

                <directory>src/main/java</directory>

                <includes>

                    <include>**/*.properties</include>

                    <include>**/*.xml</include>

                </includes>

                <filtering>true</filtering>

            </resource>

        </resources>

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <configuration>

                    <source>8</source>

                    <target>8</target>

                </configuration>

            </plugin>

        </plugins>

    </build>

2.建立基本框架

建立4个空的包和database.properties文件

database.properties

jdbc.driver=com.mysql.cj.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3308/ssmbuild?useUnicode=true&characterEncoding=utf8&useSSL=true&serverTimezone=GMT%2B8

jdbc.username=root

jdbc.password=mysql

整合Mybatis

Books

package com.rzp.pojo;



public class Books {

    private int bookID;

    private String bookName;

    private int bookCounts;

    private String detail;



    @Override

    public String toString() {

        return "Books{" +

                "bookID=" + bookID +

                ", bookName='" + bookName + '\'' +

                ", bookCounts=" + bookCounts +

                ", detail='" + detail + '\'' +

                '}';

    }



    public Books() {

    }



    public Books(int bookID, String bookName, int bookCounts, String detail) {

        this.bookID = bookID;

        this.bookName = bookName;

        this.bookCounts = bookCounts;

        this.detail = detail;

    }



    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 getBookCounts() {

        return bookCounts;

    }



    public void setBookCounts(int bookCounts) {

        this.bookCounts = bookCounts;

    }



    public String getDetail() {

        return detail;

    }



    public void setDetail(String detail) {

        this.detail = detail;

    }

}

BookMapper接口

package com.rzp.dao;



import com.rzp.pojo.Books;

import org.apache.ibatis.annotations.Param;



import java.util.List;



public interface BookMapper {

    void addBook(Books book);

    void deleteBookById(@Param("bookId") int id);

    void updateBook(Books book);

    Books queryBookById(@Param("bookId") int id);

    List<Books> queryAllBook();

    List<Books> searchBook(@Param("bookName") String bookName);

}

BookMapper.xml

<?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.rzp.dao.BookMapper">

    <insert id="addBook" parameterType="Books">

        insert into books  (bookName,bookCounts,detail)

        values (#{bookName},#{bookCounts},#{detail});

    </insert>





    <delete id="deleteBookById" parameterType="_int">

        delete from books where bookID = #{bookId}

    </delete>



    <update id="updateBook" parameterType="Books">

        update books set

        bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}

        where bookID = #{bookID};

    </update>



    <select id="queryBookById" parameterType="_int" resultType="Books">

        select * from books where bookID = #{bookId}

    </select>



    <select id="queryAllBook" resultType="Books">

        select * from books

    </select>



    <select id="searchBook" resultType="Books">

        select * from books where bookName like "%"#{bookName}"%"

    </select>

</mapper>

BookService接口

package com.rzp.service;



import com.rzp.pojo.Books;

import org.apache.ibatis.annotations.Param;



import java.util.List;



public interface BookService {



    void addBook(Books book);

    void deleteBookById(int id);

    void updateBook(Books book);

    Books queryBookById(int id);

    List<Books> queryAllBook();

    List<Books> searchBook(@Param("bookName") String bookName);



}

BookService实现类

package com.rzp.service;



import com.rzp.dao.BookMapper;

import com.rzp.pojo.Books;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;



import java.util.List;



@Service

public class BookServiceImpl implements BookService{

    //Service调用dao层，因此要组合Dao

    @Autowired

    private BookMapper bookMapper;



    public BookMapper getBookMapper() {

        return bookMapper;

    }



    public void setBookMapper(BookMapper bookMapper) {

        bookMapper = bookMapper;

    }



    @Override

    public void addBook(Books book) {

        bookMapper.addBook(book);

    }



    @Override

    public void deleteBookById(int id) {

        bookMapper.deleteBookById(id);

    }



    @Override

    public void updateBook(Books book) {

        bookMapper.updateBook(book);

    }



    @Override

    public Books queryBookById(int id) {

        return bookMapper.queryBookById(id);

    }



    @Override

    public List<Books> queryAllBook() {

        return bookMapper.queryAllBook();

    }



    @Override

    public List<Books> searchBook(String bookName) {

        return bookMapper.searchBook(bookName);

    }

}

mybatis主配置文件注册mapper

<?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">



<!--     核心配置文件    -->

<configuration>



    <settings>

        <setting name="logImpl" value="LOG4J"/>

    </settings>

    <typeAliases>

        <package name="com.rzp.pojo"/>

    </typeAliases>

    <mappers>

        <mapper class="com.rzp.dao.BookMapper"/>

    </mappers>

</configuration>

log4J

使用Mybatis官方提供的配置

# 全局日志配置

log4j.rootLogger=ERROR, stdout

# MyBatis 日志配置

log4j.logger.com.rzp.dao=TRACE

# 控制台输出

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

整合Spring层

增加两个配置文件，并且注入到applicationContext.xml中，使Spring的配置文件关联起来。
- Spring-dao.xml :这个文件其实就是Spring-整合Mybatis后的Spring数据库连接配置文件，替代了Mybatis主配置文件中的数据库连接的配置。
- Spring-service.xml :这个专门用作service的注册

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"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:tx="http://www.springframework.org/schema/tx"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

        https://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/aop

        https://www.springframework.org/schema/aop/spring-aop.xsd

        http://www.springframework.org/schema/context

        https://www.springframework.org/schema/context/spring-context.xsd

        http://www.springframework.org/schema/tx

        https://www.springframework.org/schema/tx/spring-tx.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-tool.xsd">

    <!--1.关联数据库配置文件-->

    <context:property-placeholder location="classpath:database.properties"/>

    <!--2.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}"/>

        <!-- c3p0连接池的私有属性 -->

        <property name="maxPoolSize" value="30"/>

        <property name="minPoolSize" value="10"/>

        <!-- 关闭连接后不自动commit -->

        <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，动态的实现了Dao接口可以注入到Spring容器中-->

    <!--解释 ： https://www.cnblogs.com/jpfss/p/7799806.html-->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <!--注入SqlSessionFactory-->

        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

        <!--要扫描的Dao包-->

        <property name="basePackage" value="com.rzp.dao"/>

    </bean>

    <!--配置声明式事务-->

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <constructor-arg ref="dataSource" />

    </bean>

    <!--结合AOP实现事务的植入-->

    <!--配置事务通知-->

    <tx:advice id="txAdvice" transaction-manager="transactionManager">

        <!--给哪些方法配置事务-->

        <!--propagation事务的传播特性，默认Required-->

        <tx:attributes>

            <tx:method name="*" propagation="REQUIRED"/>

        </tx:attributes>

    </tx:advice>



    <aop:config>

        <!--通过aop代理启动事务，注明哪个包需要添加事务-->

        <aop:pointcut id="txPoint" expression="execution(* com.rzp.dao..*(..))"/>

        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>

    </aop:config>

</beans>

spring-service

<?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"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:tx="http://www.springframework.org/schema/tx"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

        https://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/aop

        https://www.springframework.org/schema/aop/spring-aop.xsd

        http://www.springframework.org/schema/context

        https://www.springframework.org/schema/context/spring-context.xsd

        http://www.springframework.org/schema/tx

        https://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--扫描service下的包,读取该包下的注解-->

    <context:component-scan base-package="com.rzp.service"/>







    <!--讲所有业务类注入到spring,可以通过配置或者注解实现-->

    <bean id = "BookServiceImpl" class="com.rzp.service.BookServiceImpl">

        <property name="bookMapper" ref="bookMapper"/>

    </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"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:tx="http://www.springframework.org/schema/tx"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

        https://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/aop

        https://www.springframework.org/schema/aop/spring-aop.xsd

        http://www.springframework.org/schema/context

        https://www.springframework.org/schema/context/spring-context.xsd

        http://www.springframework.org/schema/tx

        https://www.springframework.org/schema/tx/spring-tx.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-tool.xsd">

    <!--扫描service下的包,读取该包下的注解-->

    <context:component-scan base-package="com.rzp.service"/>



    <!--讲所有业务类注入到spring,可以通过配置或者注解实现-->

    <bean id = "BookServiceImpl" class="com.rzp.service.BookServiceImpl">

        <property name="bookMapper" ref="bookMapper"/>

    </bean>



</beans>

整合SpringMVC层

添加web框架和spring-mvc.xml，并把spring-mvc.xml注入到applicationContext.xml中。
- spring-mvc：注册视图解析器，Controller层的注解扫描。

web框架

使用IDEA自带功能添加即可

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">

    <!--注册DispatcherServlet-->

    <servlet>

        <servlet-name>springmvc</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>classpath:applicationContext.xml</param-value>

        </init-param>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>springmvc</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>



    <!--过滤器，避免乱码-->

    <filter>

        <filter-name>CharacterEncodingFilter</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>

        <init-param>

            <param-name>forceEncoding</param-name>

            <param-value>true</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>CharacterEncodingFilter</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:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:tx="http://www.springframework.org/schema/tx"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

        https://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/aop

        https://www.springframework.org/schema/aop/spring-aop.xsd

        http://www.springframework.org/schema/context

        https://www.springframework.org/schema/context/spring-context.xsd

        http://www.springframework.org/schema/tx

        https://www.springframework.org/schema/tx/spring-tx.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-mvc.xsd">



    <!--注解驱动-->

    <mvc:annotation-driven/>

    <!--静态资源过滤-->

    <mvc:default-servlet-handler/>

    <!--扫描包 读取controller包下的注解-->

    <context:component-scan base-package="com.rzp.controller"/>

    <!--视图解析器-->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="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"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:tx="http://www.springframework.org/schema/tx"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

        https://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/aop

        https://www.springframework.org/schema/aop/spring-aop.xsd

        http://www.springframework.org/schema/context

        https://www.springframework.org/schema/context/spring-context.xsd

        http://www.springframework.org/schema/tx

        https://www.springframework.org/schema/tx/spring-tx.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--导入所有spring的配置文件-->

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

    <import resource="spring-dao.xml"/>

    <import resource="spring-mvc.xml"/>



</beans>

最后建立jsp文件夹

编写Controller层测试

首先添加Tomcat发布时把jar包发布到项目中的设置

这样就会把依赖的jar包发布到项目中。

SysInfo
- pojo包下添加SysInfo类，方便页面传参数

package com.rzp.pojo;



public class SysInfo {

    private String infoStr1;

    private String infoStr2;

    private String infoStr3;

    private Double infoDou1;

    private Double infoDou2;

    private Double infoDou3;

    public SysInfo() {

        this.infoDou1 = 0d;

        this.infoDou2 = 0d;

        this.infoDou3 = 0d;

    }



    @Override

    public String toString() {

        return "SysInfo{" +

                "infoStr1='" + infoStr1 + '\'' +

                ", infoStr2='" + infoStr2 + '\'' +

                ", infoStr3='" + infoStr3 + '\'' +

                ", infoDou1=" + infoDou1 +

                ", infoDou2=" + infoDou2 +

                ", infoDou3=" + infoDou3 +

                '}';

    }



    public String getInfoStr1() {

        return infoStr1;

    }



    public void setInfoStr1(String infoStr1) {

        this.infoStr1 = infoStr1;

    }



    public String getInfoStr2() {

        return infoStr2;

    }



    public void setInfoStr2(String infoStr2) {

        this.infoStr2 = infoStr2;

    }



    public String getInfoStr3() {

        return infoStr3;

    }



    public void setInfoStr3(String infoStr3) {

        this.infoStr3 = infoStr3;

    }



    public Double getInfoDou1() {

        return infoDou1;

    }



    public void setInfoDou1(Double infoDou1) {

        this.infoDou1 = infoDou1;

    }



    public Double getInfoDou2() {

        return infoDou2;

    }



    public void setInfoDou2(Double infoDou2) {

        this.infoDou2 = infoDou2;

    }



    public Double getInfoDou3() {

        return infoDou3;

    }



    public void setInfoDou3(Double infoDou3) {

        this.infoDou3 = infoDou3;

    }





}

BookController

package com.rzp.controller;



import com.rzp.pojo.Books;

import com.rzp.pojo.SysInfo;

import com.rzp.service.BookService;

import org.apache.ibatis.annotations.Param;

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.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;



import javax.servlet.http.HttpServletRequest;

import java.util.List;



@Controller

@RequestMapping("/book")

public class BookController {

    //Controller调Sercice层

    @Autowired

    @Qualifier("BookServiceImpl")

    private BookService bookService;



    //查询全部books并且返回到books展示页面

    @RequestMapping("/allBook")

    public String listBooks(Model model){

        List<Books> booksList = bookService.queryAllBook();

        model.addAttribute("list",booksList);

        return "allBook";

    }



    //跳转到增加书籍界面

    @RequestMapping("/toAddBook")

    public String toAddPaper(){

        return "addBook";

    }



    //添加书籍请求

    @RequestMapping("/AddingBook")

    public String addBook(Books books){

        System.out.println("addBook="+books);

        bookService.addBook(books);

        return "redirect:/book/allBook";

    }



    //跳转到修改书籍界面

    @RequestMapping("/toUpdateBook")

    public String toUpdatePaper(int id,Model model){

        Books books = bookService.queryBookById(id);

        model.addAttribute("Qbooks",books);

        return "updateBook";

    }



    //修改书籍请求

    @RequestMapping("/updatingBook")

    public String updateBook(Books books){

        System.out.println("UpdatingBook="+books);

        bookService.updateBook(books);

        return "redirect:/book/allBook";

    }



    //删除书籍

    @RequestMapping("/deleteBook/{id}")

    public String deleteBook(@PathVariable("id") int id){

        bookService.deleteBookById(id);

        return "redirect:/book/allBook";

    }



    //搜索书籍

    @RequestMapping("/searchBook")

    public String searchBook(SysInfo sysInfo,Model model){

        if (sysInfo.getInfoStr1()!=null&&!"".equals(sysInfo.getInfoStr1())){

            List<Books> booksList = bookService.searchBook(sysInfo.getInfoStr1());

            model.addAttribute("list",booksList);

        }else {

            model.addAttribute("msg","请输入要查询的数据");

        }

        return "allBook";

    }

}

页面

addBook

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>Title</title>

    <!--导入BootStrap-->

    <link href="https://cdn.bootcss.com/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>

                    <small>新增书籍</small>

                </h1>

            </div>

        </div>



    </div>

    <form action="${pageContext.request.contextPath}/book/AddingBook" method="post">

        <div class="form-group">

            <label>书籍名称</label>

            <input name = "bookName" class="form-control" required>

        </div>

        <div class="form-group">

            <label>书籍数量</label>

            <input name = "bookCounts" class="form-control" required>

        </div>

        <div class="form-group">

            <label>书籍描述</label>

            <input name = "detail" class="form-control" required>

        </div>

        <div class="form-group">

            <input type="submit" class="form-control" value="添加">

        </div>

    </form>

</div>

</body>

</html>

allBook

<%@ 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>

    <!--导入BootStrap-->

    <link href="https://cdn.bootcss.com/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>

                    <small>书籍列表 ------ 显示所有书籍</small>

                </h1>

            </div>

        </div>

        <div class="row">

            <div class="col-md-4 column">

                <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>

            </div>

            <div class="col-md-4 column">

                <form class="form-inline" action="${pageContext.request.contextPath}/book/searchBook" method="get">

                    <input type="text" name="infoStr1" class="form-control" placeholder="请输入要查询的书籍名称">&nbsp;&nbsp;

                    <input type="submit" class="btn btn-primary" value="查询">&nbsp;&nbsp;

                    <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">全部书籍</a>

                </form>

            </div>

        </div>

        <div>

            ${msg}

        </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>

                        <th>操作</th>

                    </tr>

                </thead>

                <tbody>

                    <c:forEach var="book" items="${list}">

                        <tr>

                            <td>${book.bookID}</td>

                            <td>${book.bookName}</td>

                            <td>${book.bookCounts}</td>

                            <td>${book.detail}</td>

                            <td>

                                <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.bookID}">修改</a>

                                &nbsp; | &nbsp;

                                <a  href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>

                            </td>

                        </tr>

                    </c:forEach>

                </tbody>

            </table>

        </div>

    </div>





</div>

</body>

</html>

updateBook

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>修改书籍</title>

    <!--导入BootStrap-->

    <link href="https://cdn.bootcss.com/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>

                    <small>修改书籍</small>

                </h1>

            </div>

        </div>

    </div>

    <form action="${pageContext.request.contextPath}/book/updatingBook" method="post">

        <input type="hidden"name="bookID" value="${Qbooks.bookID}">

        <div class="form-group">

            <label>书籍名称</label>

            <input name = "bookName" class="form-control" value="${Qbooks.bookName}" required>

        </div>

        <div class="form-group">

            <label>书籍数量</label>

            <input name = "bookCounts" class="form-control" value="${Qbooks.bookCounts}"required>

        </div>

        <div class="form-group">

            <label>书籍描述</label>

            <input name = "detail"  class="form-control" value="${Qbooks.detail}"required>

        </div>

        <div class="form-group">

            <input type="submit" class="form-control" value="修改">

        </div>

    </form>

</div>

</body>

</html>

index

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

  <head>

    <title>首页</title>

    <style>

      a{

        text-decoration: none;

        color: black;

        font-size: 18px;

      }

      h3{

        width: 180px;

        height: 30px;

        margin:100px auto;

        text-align: center;

        line-height: 38px;

        background: lightgray;

        border-radius: 5px;

      }

    </style>

  </head>

  <body>

  <h3>

    <a  href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>

  </h3>



  </body>

</html>

测试
- 满足了最简单的CRUD

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SpringMVC（六）：分层整合SSM

本文是按照狂神说的教学视频学习的笔记，强力推荐，教学深入浅出一遍就懂！b站搜索狂神说或点击下面链接

https://space.bilibili.com/95256449?spm_id_from=333.788.b_765f7570696e666f.2

环境搭建

数据库建表

项目搭建

创建maven项目

1.pom.xml

2.建立基本框架

整合Mybatis

Books

BookMapper接口

BookMapper.xml

BookService接口

BookService实现类

mybatis主配置文件注册mapper

log4J

整合Spring层

spring-dao.xml

spring-service

applicationContext.xml

整合SpringMVC层

web框架

web.xml

spring-mvc.xml

applicationContext.xml

编写Controller层测试

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