SSM框架整合案例

第一步：配置数据库

使用的是MySQL数据库

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');

第二步：配置pom.xml文件导入依赖

pom.xml代码如下:

	<?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>com.edu</groupId>
    <artifactId>ssmbuild</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>ssmbuild Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

    <dependencies>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.19</version>
        </dependency>
        <!-- 数据库连接池 -->
        <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>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <!--Lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.10</version>
        </dependency>
        <dependency>
      		<groupId>javax.servlet</groupId>
      		<artifactId>jstl</artifactId>
      	<version>1.2</version>
    </dependency>
    </dependencies>

    <build>
        <!--Maven资源过滤设置-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties
                    **/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties
                    **/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>


        <finalName>ssmbuild</finalName>
        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
            <plugins>
                <plugin>
                    <artifactId>maven-clean-plugin</artifactId>
                    <version>3.1.0</version>
                </plugin>
                <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
                <plugin>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>3.0.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.0</version>
                </plugin>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.22.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.2.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-install-plugin</artifactId>
                    <version>2.5.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-deploy-plugin</artifactId>
                    <version>2.8.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

第三步：在resources文件夹下新建jdbcConfig.properties文件存储数据库配置信息

db.driver=com.mysql.cj.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/ssmbuild?serverTimezone=UTC
db.username=root
db.password=123456

第四步：在java目录下新建pojo包用来存放pojo类Books，pojo类中变量名最好与数据库中保持一致

Books类中使用了lombok插件，使用
@Data
@AllArgsConstructor
@NoArgsConstructor
三个注解即可生成一个标准的pojo类

package com.zhangzhilin.pojo;

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

import java.io.Serializable;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books implements Serializable {
    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;

}

第五步：在resources文件夹下新建mybatis-config.xml文件配置MyBatis

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>
    <!-- 配置pojo类的别名 -->
    <typeAliases>
        <package name="com.zhangzhilin.pojo"/>
    </typeAliases>
    
    <!-- 配置持久层的映射 -->
    <mappers>
        <mapper class="com.zhangzhilin.dao.BookMapper"/>
    </mappers>
</configuration>

第六步：在java文件夹下新建mapper包，用来存放BookMapper和BookMapper.xml

1. BookMapper代码如下：

package com.zhangzhilin.dao;

import com.zhangzhilin.pojo.Books;

import java.util.List;

public interface BookMapper {
    //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();
}

2. BookMapper.xml代码如下：

<mapper namespace="com.zhangzhilin.dao.BookMapper">

    <insert id="addBook" parameterType="Books">
        insert into ssmbuild.books (bookName, bookCounts, detail)
        values (#{bookName},#{bookCounts},#{detail})
    insert>

    <delete id="deleteBookById" parameterType="int">
        delete from ssmbuild.books where bookID=#{bookID}
    delete>
    
    <update id="updateBook" parameterType="books">
        update ssmbuild.books set bookName = #{bookName},bookCounts=#{bookCounts},detail=#{detail}
        where bookID=#{bookID};
    update>

    <select id="queryBookById" resultType="books">
        select * from ssmbuild.books where bookID=#{bookID};
    select>

    <select id="queryAllBook" resultType="books">
        select * from ssmbuild.books
    select>
mapper>

第七步：在resources文件夹下新建spring-dao.xml文件用来配置MyBatis,这个文件中会引用第三步创建的jdbcConfig.properties文件

spring-dao.xml

<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
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd">

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

    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="DriverClass" value="${db.driver}"/>
        <property name="jdbcUrl" value="${db.url}"/>
        <property name="user" value="${db.username}"/>
        <property name="password" value="${db.password}"/>
    bean>
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    bean>

    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.zhangzhilin.dao"/>
    bean>

beans>

第八步：Service包下新建BookService接口和实现类BookServiceImpl包结构如下

BookService代码如下：

package com.zhangzhilin.service;

import com.zhangzhilin.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();
}

BookServiceImpl代码如下：
在BookServiceImpl需要调用BookMapper，所以添加set方法，可以使用set方式注入

package com.zhangzhilin.service.Impl;

import com.zhangzhilin.dao.BookMapper;
import com.zhangzhilin.pojo.Books;
import com.zhangzhilin.service.BookService;

import java.util.List;

public class BookServiceImpl implements BookService {
    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();
    }
}

第九步：在resources文件夹下新建spring-service.xml文件进行service层的配置

spring-service.xml代码如下：

<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
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd">
    
    <context:component-scan base-package="com.zhangzhilin.service"/>

    
    <bean id="BookServiceImpl" class="com.zhangzhilin.service.Impl.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    bean>

    
    <bean id="TransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    
        <property name="dataSource" ref="dataSource"/>
    bean>

beans>

第十步：在WEB-INF文件夹下的web.xml文件中配置dispatchServlet和乱码过滤还有session过期时间

web.xml代码如下：

<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">


    <servlet>
        <servlet-name>springmvcservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:applicationContext.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>
    <servlet-mapping>
        <servlet-name>springmvcservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>


    <filter>
        <filter-name>encodingFilterfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>utf-8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>encodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>


    <session-config>
        <session-timeout>15session-timeout>
    session-config>
web-app>

第十一步：在resources文件夹下新建spring-mvc.xml文件进行Controller层的配置

spring-mvc.xml代码如下：

<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
       http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    
    <mvc:annotation-driven/>
    
    <mvc:default-servlet-handler/>
    
    <context:component-scan base-package="com.zhangzhilin.controller"/>
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    bean>
 beans>

第十二步：在resources文件夹下新建applicationContext.xml文件将三层的配置文件导入作为总的配置文件使用

applicationContext.xml代码如下：

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

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

第十三步：在controller层下新建BookController，使用注解形式配置

BookController代码如下：

package com.zhangzhilin.controller;

import com.zhangzhilin.pojo.Books;
import com.zhangzhilin.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 {
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

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

第十四步：设置主页，新增一个a标签来进行跳转

index.jsp代码如下

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$title>
  head>
  <body>
    <h3>
      <a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面a>
    h3>
  body>
html>

第十五步：设置要跳转到的页面allBook.jsp，使用jstl标签库和bootstrap前端框架进行页面的展示

allBook.jsp代码如下:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>书籍列表title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    
    <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>

    <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>书籍名字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="${requestScope.get('list')}">
                    <tr>
                        <td>${book.getBookID()}td>
                        <td>${book.getBookName()}td>
                        <td>${book.getBookCounts()}td>
                        <td>${book.getDetail()}td>
                    tr>
                c:forEach>
                tbody>
            table>
        div>
    div>
div>
body>
html>

第十六步：将项目部署至服务器最终项目结构如下