SMM - Spring，SpringMVC，MyBatis 三大框架整合

骑猪看日落 2022-12-02 15:21 322阅读 0赞

**开发环境**  
真实项目开发最流行的开发结构体系是SMM整合  
web层用 -> SpringMVC  
service层 -> Spring  
dao层用 ->MyBatis  
**项目结构**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center]  
项目源码下载地址：链接：[https://pan.baidu.com/s/1Sic4xcxjjQsUgdPrj2vaLA][https_pan.baidu.com_s_1Sic4xcxjjQsUgdPrj2vaLA]  
提取码：o3hp

--------------------

**整合流程**  
第一步：  
pox.xml中导入maven依赖

<properties>
        
        <spring.version>5.0.2.RELEASE</spring.version>
        <log4j.version>1.2.17</log4j.version>
        <slf4j.version>1.6.6</slf4j.version>
        <mysql.version>5.1.47</mysql.version>
        <mybatis.version>3.4.6</mybatis.version>
      </properties>
    
      <dependencies>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>${spring.version}</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>${spring.version}</version>
        </dependency>
        <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.8.9</version>
        </dependency>
    
        
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>${mysql.version}</version>
        </dependency>
        <dependency>
          <groupId>com.mchange</groupId>
          <artifactId>c3p0</artifactId>
          <version>0.9.5.4</version>
        </dependency>
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>${mybatis.version}</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>${spring.version}</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.9.9</version>
        </dependency>
        <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>4.0.1</version>
          <scope>provided</scope>
        </dependency>
        <dependency>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>javax.servlet.jsp-api</artifactId>
          <version>2.3.1</version>
          <scope>provided</scope>
        </dependency>
        <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
        </dependency>
    
        
        <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>${log4j.version}</version>
        </dependency>
        <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-api</artifactId>
          <version>${slf4j.version}</version>
        </dependency>
        <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
          <version>${slf4j.version}</version>
        </dependency>
    
        
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.12</version>
          <scope>test</scope>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-test</artifactId>
          <version>${spring.version}</version>
          <scope>test</scope>
        </dependency>
      </dependencies>

第二步：service层用Spring进行管理  
spring-service.xml 配置文件  
主要配置的内容是：  
1，用ioc注解扫描JavaBean对象  
2，配置事务管理器

<?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:tx="http://www.springframework.org/schema/tx"
           xmlns:aop="http://www.springframework.org/schema/aop"
           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/tx
    	   http://www.springframework.org/schema/tx/spring-tx.xsd
    	   http://www.springframework.org/schema/aop
    	   http://www.springframework.org/schema/aop/spring-aop.xsd">
    
    
        <context:component-scan base-package="com.gg">
            <context:exclude-filter type="annotation"
                                    expression="org.springframework.stereotype.Controller"/>
        </context:component-scan>
    
    
    
        <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"/>
        </bean>
    
        <tx:advice id="txAdvice" transaction-manager="txManager">
            <tx:attributes>
                <tx:method name="*"/>
                <tx:method name="query*" read-only="true"/>
                <tx:method name="find*" read-only="true"/>
            </tx:attributes>
        </tx:advice>
        
        <aop:config>
            <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.gg.service..*.*(..))"/>
        </aop:config>
    </beans>

第三步：dao层用MyBatis进行管理  
spring-dao.xml 配置文件  
主要配置的内容是：  
1，配置第三方连接池对象  
2，配置SqlSessionFactory，传入连接池对象，扫描创建SqlSessionFactoyBean。  
3，配置映射器扫描文件，指定package下扫描，存放XXXDao.xml映射文件

<?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"
           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">
    
    
        <context:property-placeholder location="classpath:jdbc.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}"/>
        </bean>
    
        <bean class="org.mybatis.spring.SqlSessionFactoryBean">
    
            <property name="dataSource" ref="dataSource"/>
    
            <property name="typeAliasesPackage" value="com.gg.bean"/>
        </bean>
    
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    
            <property name="basePackage" value="com.gg.dao"/>
        </bean>
    </beans>

第四步：controller层用springmvc进行管理  
spring-web.xml 配置文件  
主要配置的内容是：  
1，配置主键扫描，只扫描Controller注解-  
2，开启mvc的注解驱动  
3，配置静态资源h  
4，拦截器注册

<?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
    	   http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        
        <context:component-scan base-package="com.gg" use-default-filters="false">
            <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        </context:component-scan>
    
        
        <mvc:annotation-driven/>
    
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
           
        </bean>
    
        
        <mvc:default-servlet-handler/>
    
    
        <mvc:interceptors>
            <mvc:interceptor>
                <mvc:mapping path="/account/**"/>
                <bean class="com.gg.interceptor.AccountInterceptor"/>
            </mvc:interceptor>
        </mvc:interceptors>
    
    </beans>

第五步：web.xml项目配置文件  
1，dispacherServlet请求分发器配置  
2，请求过滤器，处理乱码问题

<?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">
    
        <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>
        </filter>
        <filter-mapping>
            <filter-name>characterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
    
        <servlet>
            <servlet-name>dispatcherServlet</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:spring-*.xml</param-value>
            </init-param>
    
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
    </web-app>

第六步：测试，银行转账业务功能实现  
1，前端界面 transfer.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>添加帐号</title>
    </head>
    <body>
    <form action="${pageContext.request.contextPath}/account/transfer" method="post">
        转账用户：<input type="text" name="from"><br>
        收款用户：<input type="text" name="to"><br>
        金额：<input type="text" name="money"><br>
        <input type="submit" value="发起转账">
    </form>
    </body>
    </html>

2,controller层

@Controller
    @RequestMapping("/account")
    public class accountServlet {
        //转账
        @RequestMapping("/transfer")
        public String transfer(String from,String to,double money){
            boolean flag = false;
            try {
            //看下前端传递过来的参数是否接收成功
                System.out.println(from+"->"+to+"->"+money);
                //调用service层，交给service层去执行事务操作
                flag = accountService.transfer(from,to,money);
                if(flag){
                    System.out.println("转账成功");
                    return "redirect:/pages/success.html";
                }else{
                    System.out.println("转账失败。。。。");
                    return "redirect:/pages/faile.html";
                }
            } catch (Exception e) {
                System.out.println("出现异常："+e.getMessage());
                return "redirect:/pages/faile.html";
            }
        }
    }

3，service层，记得service只执行操作，不要处理异常，直接抛给controller去处理，不然事务无效。

@Service("accountService")
    public class AccountService {
        @Autowired
        private AccountDao accountDao;
    
        //转账业务
        public boolean transfer(String from, String to, double money) throws Exception{
            int result1 = accountDao.reduce(from, money);
            //搞事代码
            //int i = 1 / 0;
    
            int result2 = accountDao.add(to, money);
    
            if (result1 > 0 && result2 > 0) {
                return true;
            } else {
                return false;
            }
        }
    }

4，dao层，接口与映射文件

public interface AccountDao {
        //添加账户信息
        int addAccount(Account account);
    
        //转账操作
        int reduce(@Param("from") String from, @Param("rMoney")double rMoney);
    
        //收款
        int add(@Param("to")String to, @Param("rMoney") double rMoney);
    }

<?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.gg.dao.AccountDao">
       
        <insert id="addAccount" parameterType="com.gg.bean.Account">
            insert into account(username,money) values(#{username},#{money})
        </insert>
    
        
        <update id="reduce">
            update account set money = money- #{rMoney} where username = #{from}
        </update>
    
      
        <update id="add">
            update account set money = money+ #{rMoney} where username = #{to}
        </update>
    </mapper>

记得包名跟映射文件路径一直，并且名称相同  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center 1]

--------------------

以上就是SMM基本组合开发框架，仅供大家参考

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center]: /images/20221123/5877e0e0118943d09ef94af15a24052d.png
[https_pan.baidu.com_s_1Sic4xcxjjQsUgdPrj2vaLA]: https://pan.baidu.com/s/1Sic4xcxjjQsUgdPrj2vaLA
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpZXJlbmJpamkyMQ_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221123/9e927a723e69469bbdf986118908a37f.png