SSM(Spring+SpringMVC+MyBatis)框架整合开发流程

回忆了 Spring、SpringMVC、MyBatis 框架整合，完善一个小demo，包括基本的增删改查功能。

开发环境

IDEA
MySQL 5.7
Tomcat 9
Maven 3.2.5
需要熟练掌握MySQL数据库（建表和增删改查语句等，Spring，JavaWeb基础及MyBatis知识，简单的前端知识；

数据库环境

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',
  `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');

开发项目首先搭建基本的环境

新建一Maven项目！SSM ，添加web的支持
导入相关的pom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>4.0.0modelVersion>

    <groupId>jiachuixungroupId>
    <artifactId>SSMartifactId>
    <version>1.0-SNAPSHOTversion>

    <dependencies>
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.19version>
        dependency>
        
        <dependency>
            <groupId>com.mchangegroupId>
            <artifactId>c3p0artifactId>
            <version>0.9.5.2version>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>servlet-apiartifactId>
            <version>2.5version>
        dependency>
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>jsp-apiartifactId>
            <version>2.2version>
        dependency>
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.5.2version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.2version>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.1.9.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.1.9.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.18.8version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>org.aspectjgroupId>
            <artifactId>aspectjweaverartifactId>
            <version>1.9.4version>
        dependency>
    dependencies>
    
project>

　　3.Maven资源过滤配置

<build>
        <resources>
            <resource>
                <directory>src/main/javadirectory>
                <includes>
                    <include>**/*.propertiesinclude>
                    <include>**/*.xmlinclude>
                includes>
                <filtering>falsefiltering>
            resource>
            <resource>
                <directory>src/main/resourcesdirectory>
                <includes>
                    <include>**/*.propertiesinclude>
                    <include>**/*.xmlinclude>
                includes>
                <filtering>falsefiltering>
            resource>
        resources>
    build>

建议基本结构和配置框架

com.jia.controller (控制层)
com.jia.mapper （持久层）
com.jia.service （业务层）
com.jia.pojo (实体类)

mybatis-config

<?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>

configuration>

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

beans>

Mybatis层编写配置

1. 数据库配置文件 database.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
# 如果使用的是MySQL8.0+ ，增加一个时区的配置
jdbc.url=jdbc:mysql://localhost:3306/books?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
jdbc.username=root
jdbc.password=123456

2. 编写Mybatis核心配置文件

<?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>
    <typeAliases>
        <package name="com.jia.pojo"/>
    typeAliases>
    <mappers>
        <package name="com.jia.mapper"/>
    mappers>
configuration>

　　3. 编写数据库对应的实体类com.jia.pojo.Books　　(使用lombok插件)

package com.jia.pojo;

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

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
    private int bookId;
    private String bookName;
    private int bookCounts;
    private String detail;
}

4. 编写mapper层的接口：BooksMapper

package com.jia.mapper;

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

import java.util.List;

public interface BooksMapper {

    //添加数据
    int addBooks(Books books);

    //删除数据
    int deleteBookById(@Param("bookId") int id);

    //更新数据
    int updateBook(Books books);

    //查询一条数据
    Books queryBookById(@Param("bookId") int id);

    //查询全部数据
    List queryAllBook();

    //查询指定的书籍
    Books queryBooksByName(@Param("bookName") String bookName);

}

5. 编写接口对应的Mapper.xml文件：BooksMapper.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.jia.mapper.BooksMapper">

    <insert id="addBooks" 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" resultType="Books" parameterType="int">
        select * from Books where bookId=#{bookId};
    select>

    <select id="queryAllBook" resultType="Books">
        select * from Books;
    select>

    <select id="queryBooksByName" resultType="Books" parameterType="String">
        select * from books where bookName=#{bookName}
    select>

mapper>

6. 变写service层接口和实现类

BooksService接口：

package com.jia.service;

import com.jia.pojo.Books;

import java.util.List;

public interface BooksService {

    //添加数据
    int addBooks(Books books);

    //删除数据
    int deleteBookById(int id);

    //更新数据
    int updateBook(Books books);

    //查询一条数据
    Books queryBookById(int id);

    //查询全部数据
    List queryAllBook();

    //查询指定的书籍
    Books queryBooksByName(String bookName);

}

BookServiceImpl实现类：

package com.jia.service.impl;

import com.jia.mapper.BooksMapper;
import com.jia.pojo.Books;
import com.jia.service.BooksService;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

public class BooksServiceImpl implements BooksService {

    // 业务层 调用 持久层
    @Autowired
    private BooksMapper booksMapper;

    // 添加set方法，方便Spring注入IOC容器中
    public void setBooksMapper(BooksMapper booksMapper) {
        this.booksMapper = booksMapper;
    }

    public int addBooks(Books books) {
        return booksMapper.addBooks(books);
    }

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

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

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

    public List queryAllBook() {
        return booksMapper.queryAllBook();
    }

    public Books queryBooksByName(String bookName) {
        return booksMapper.queryBooksByName(bookName);
    }

}

Spring的配置

1. 配置Spring整合MyBatis，这里数据源使用c3p0连接池

2. 编写Spring整合MyBatis相关的配置，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
       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:database.properties"/>

    
    <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}"/>
        
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        
        <property name="autoCommitOnClose" value="false"/>
        
        <property name="checkoutTimeout" value="10000"/>
        
        <property name="acquireRetryAttempts" value="2"/>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        
        <property name="dataSource" ref="dataSource"/>
        
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    bean>

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

beans>

3. Spring配置service层

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

    <bean id="booksService" class="com.jia.service.impl.BooksServiceImpl">
        <property name="booksMapper" ref="booksMapper"/>
    bean>

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

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

    
    <tx:advice id="txAdice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        tx:attributes>
    tx:advice>
    
    <aop:config>
        
        <aop:pointcut id="txPointCut" expression="execution(* com.jia.mapper.*.*(..))"/>
        <aop:advisor advice-ref="txAdice" pointcut-ref="txPointCut"/>
    aop:config>

beans>

SpringMVC层配置

1. 首先项目添加框架支持Web，修改WEB-INF文件下web.xml文件内容

<?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">

    
    <servlet>
        <servlet-name>DispatcherServletservlet-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>DispatcherServletservlet-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>

2. 配置编写 spring-mvc.xml 文件

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

    
    
    <mvc:annotation-driven />

    
    <mvc:default-servlet-handler/>

    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="resourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    bean>

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

    
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/html;charset=UTF-8value>
                        <value>application/json;charset=UTF-8value>
                    list>
                property>
            bean>
        mvc:message-converters>
    mvc:annotation-driven>
    
    
    
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        
        <property name="defaultEncoding" value="utf-8"/>
        
        <property name="maxUploadSize" value="10485760"/>
        <property name="maxInMemorySize" value="40960"/>
    bean>

beans>

3. Spring配置整合文件：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
       http://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>

以上架构基本配置完成！剩下的就是编写需求实现具体的功能！

Controller 和 View

1. BookController 类编写

package com.jia.controller;

import com.jia.pojo.Books;
import com.jia.service.BooksService;
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 java.util.ArrayList;
import java.util.List;

@Controller
@RequestMapping("/book")
public class BooksController {

    // controller层 调用 service层
    @Autowired
    @Qualifier("booksService")
    private BooksService booksService;

    // 查询全部的数据，并且返回到一个数据展示页面
    @RequestMapping("/allBook")
    public String list(Model model){
        List books = booksService.queryAllBook();
        model.addAttribute("list",books);
        return "allBook";
    }

    // 跳转到添加书籍页面
    @RequestMapping("/toAddPaper")
    public String toAddPaper(){
        return "addBook";
    }

    // 添加书籍请求
    @RequestMapping("/addBook")
    public String addBook(Books books){
        System.out.println("addBook-->"+books);
        booksService.addBooks(books);
        return "redirect:/book/allBook";
    }

    // 跳转到修改页面
    @RequestMapping("/toUpdate")
    public String toUpdatePaper(int id,Model model){
        Books books = booksService.queryBookById(id);
        model.addAttribute("Qbook",books);
        return "updateBook";
    }

    // 修改书籍
    @RequestMapping("/updateBook")
    public String updateBook(Books books){
        System.out.println("updateBook-->"+books);
        booksService.updateBook(books);
        return "redirect:/book/allBook";
    }

    // 删除书籍
    @RequestMapping("/deleteBook/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id){
        booksService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

    // 查询书籍
    @RequestMapping("/queryBook")
    public String queryBook(String bookName,Model model){
        Books books = booksService.queryBooksByName(bookName);

        List list = new ArrayList();
        list.add(books);

        if (books == null){
           list = booksService.queryAllBook();
           model.addAttribute("error","未查到相关内容");
        }

        model.addAttribute( "list", list);
        return "allBook";
    }
}

2. 编写首页 index.jsp 　　(页面有点简陋，基本的功能都有CRUD)

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

  
    $Title$
    
  
  
    
      登录

2. 数据展示页面 allBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    书籍列表
    
    



class="container">
    class="row clearfix">
        class="col-md-12 column">
            class="page-header">
                
                    书籍列表 —— 显示所有书籍
                
            
        

        class="row">
            class="col-md-4 column">
                class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddPaper">添加书籍
                class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">显示全部书籍
            
            class="col-md-4 column">
            class="col-md-4 column">
               <%--查询书籍--%>
                class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right">
                    ${error}
                    class="form-control" placeholder="查询书籍的名称">
                    class="btn btn-primary" value="查询">
                
            
        
    

    class="row clearfix">
        class="col-md-12 column">
            class="table table-hover table-striped">
                
                        
                
                    书籍编号
                    书籍名字
                    书籍数量
                    书籍详情
                    操作
                
                

                
                    
                            ${book.bookId}
                            ${book.bookName}
                            ${book.bookCounts}
                            ${book.detail}
                            
                                修改
                                  | &nbsp;
                                删除

书籍编号	书籍名字	书籍数量	书籍详情	操作
${book.bookId}	${book.bookName}	${book.bookCounts}	${book.detail}	修改 \|   删除

3. 添加书籍页面 addBook.jsp

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


    添加书籍
    


class="container">
    class="row clearfix">
        class="col-md-12 column">
            class="page-header">
                
                    添加数据
                
            
        
    

    
        class="form-group">
            书籍名称
            class="form-control" name="bookName" placeholder="输入书籍名称" required>
        
        class="form-group">
            书籍数量
            class="form-control" name="bookCounts"  placeholder="输入书籍数量" required>
        
        class="form-group">
            书籍详情
            class="form-control" name="detail" placeholder="输入书籍详情" required>

4. 修改书籍页面 updateBook.jsp

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


    修改书籍
    


class="container">
    class="row clearfix">
        class="col-md-12 column">
            class="page-header">
                
                    修改数据
                
            
        
    

    
        <%--前端传递隐藏域--%>
        
        class="form-group">
            书籍名称
            class="form-control" name="bookName" value="${Qbook.bookName}" placeholder="输入书籍名称" required>
        
        class="form-group">
            书籍数量
            class="form-control" name="bookCounts" value="${Qbook.bookCounts}" placeholder="输入书籍数量" required>
        
        class="form-group">
            书籍详情
            class="form-control" name="detail" value="${Qbook.detail}" placeholder="输入书籍详情" required>

最后在IDEA里点击Tomcat服务器发布项目 OK完成！

SSM

SSM(Spring+SpringMVC+MyBatis)框架整合开发流程

开发环境

数据库环境

开发项目首先搭建基本的环境

建议基本结构和配置框架

Mybatis层编写配置

Spring的配置

SpringMVC层配置

Controller 和 View

登录

书籍列表 —— 显示所有书籍

添加数据

修改数据

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ssm框架的事物控制

ssm框架关系

idea中解决整合SSM加载不到dataSource；

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