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  • SSM三大框架整合-分模块版本

    0.创建数据库和表结构

    create database ssm;
    use ssm;
    create table account(
      id int primary key auto_increment,
      name varchar(20),
      money double(20,2)
    );

    1.创建父工程  oa(pom文件中加上 <packaging>pom</packaging>,删除src文件,因为它仅仅作为一个父工程,不编写代码)

      在 pom 文件中定义全局版本

    <properties>
        <spring.version>5.0.3.RELEASE</spring.version>
    </properties>

    2.在父工程上右键创建子模块

      

      oa_dao:

        在 pom 文件添加依赖

    <dependencies>
            <!-- 配置实体类依赖 -->
            <dependency>
                <groupId>com.fgy</groupId>
                <artifactId>oa_domain</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <!-- 数据库驱动 -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.6</version>
            </dependency>
            <!-- mybatis -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.4.5</version>
            </dependency>
            <!-- spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- mybatis和spring整合包 -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.3.1</version>
            </dependency>
            <!-- junit测试 -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
            </dependency>
        </dependencies>

      oa_service:

        在 pom 文件添加依赖

    <dependencies>
            <!-- 配置实体类依赖 -->
            <dependency>
                <groupId>com.fgy</groupId>
                <artifactId>oa_domain</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <!-- 配置持久层依赖 -->
            <dependency>
                <groupId>com.fgy</groupId>
                <artifactId>oa_dao</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <!-- spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-tx</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aop</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.aspectj</groupId>
                <artifactId>aspectjweaver</artifactId>
                <version>1.8.7</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <version>${spring.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- junit测试 -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </dependency>
        </dependencies>

      oa_domain:可以不划分此模块,在用到此模块时要记得在对应的 pom 文件中导入此依赖

      oa_utils:可以不划分此模块,在用到此模块时要记得在对应的 pom 文件中导入此依赖

      oa_web:使用 webapp 骨架创建,pom文件中加上 <packaging>war</packaging>

        在 pom 文件添加依赖

    <dependencies>
            <!-- 配置业务层依赖 -->
            <dependency>
                <groupId>com.fgy</groupId>
                <artifactId>oa_service</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <!-- servlet -->
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
                <version>2.5</version>
                <scope>provided</scope>
            </dependency>
            <!-- jstl -->
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jstl</artifactId>
                <version>1.2</version>
            </dependency>
            <!-- spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>
        </dependencies>
    <finalName>oa_web</finalName>
            <plugins>
                <!-- 设置编译插件 -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.1</version >
                    <configuration>
                        <source>${maven.compiler.source}</source>
                        <target>${maven.compiler.target}</target>
                        <encoding>${project.build.sourceEncoding}</encoding>
                    </configuration>
                </plugin>
                <!-- 设置Tomcat插件 -->
                <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <version>2.2</version>
                    <configuration>
                        <path>/</path>
                        <port>8080</port>
                    </configuration>
                </plugin>
            </plugins>

    3.在 oa_dao 的 resources 目录下创建 applicationContext-dao.xml 文件

    <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">
    
        <!-- 开启注解扫描 -->
        <context:component-scan base-package="com.fgy.oa.dao"/>
    
        <!-- 数据源 -->
        <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
            <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
            <property name="url" value="jdbc:mysql://localhost:3306/ssm?useUnicode=true&amp;characterEncoding=utf-8"/>
            <property name="username" value="root"/>
            <property name="password" value="root"/>
        </bean>
    
        <!-- sessionFactory -->
        <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource"/>
            <!-- 给实体类起别名 -->
            <property name="typeAliasesPackage" value="com.fgy.oa.domain"/>
        </bean>
    
        <!-- mapper 扫描器 :用来产生代理对象 -->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.fgy.oa.dao"/>
        </bean>
    
    </beans>

      在 oa_dao 中创建持久层接口:

    /**
     * 账户持久层接口
     */
    @Repository("accountDao")
    public interface AccountDao {
        /**
         * 根据id查询账户信息
         * @param id
         * @return
         */
        @Select("select * from account where id = #{id}")
        Account findById(Integer id);
    }

    4.在 oa_domain 中创建实体类

    /**
     * 账户实体类
     */
    public class Account {
        private Integer id;
        private String name;
        private Double money;
        // get 和 set 方法
    }

    5.测试持久层接口

    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = "classpath:applicationContext-dao.xml")
    public class AccountDaoTest {
        @Autowired
        private AccountDao accountDao;
    
        @Test
        public void testFindById() {
            Account account = accountDao.findById(1);
            System.out.println(account);
        }
    }

    6.在 oa_service 的 resources 目录下创建 applicationContext-service.xml 文件

    <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
            http://www.springframework.org/schema/aop/spring-aop.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx.xsd">
    
        <!-- 测试service层时需要导入使用,整合开发统一导入web层即可 -->
        <!--<import resource="applicationContext-dao.xml"/>-->
    
        <!-- 开启注解扫描 -->
        <context:component-scan base-package="com.fgy.oa.service.impl"/>
    
        <!-- 事务配置 -->
        <!-- 配置事务管理器 -->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <!-- 注入数据源 -->
            <property name="dataSource" ref="dataSource"></property>
        </bean>
        <!-- 配置通知 -->
        <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <tx:method name="find*" read-only="true" propagation="SUPPORTS"/>
                <tx:method name="*" read-only="false" propagation="REQUIRED"/>
            </tx:attributes>
        </tx:advice>
        <!-- 配置 aop -->
        <aop:config>
            <!-- 配置切入点表达式 -->
            <aop:pointcut id="pt" expression="execution(* com.fgy.oa.service.impl.*.*(..))"/>
            <!-- 配置切入点表达式和事务通知的对应关系 -->
            <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"></aop:advisor>
        </aop:config>
    
    </beans>

      dao 新增的方法:

    /**
         * 根据名称查询账户信息
         * @param name
         * @return
         */
        @Select("select * from account where name = #{name}")
        Account findByName(String name);
    
        /**
         * 更新账户信息
         * @param account1
         */
        @Select("update account set name = #{name}, money = #{money} where id = #{id}")
        void update(Account account1);

      service 代码:

    /**
     * 账户业务层接口
     */
    public interface AccountService {
    
        /**
         * 根据id查询账户信息
         * @param id
         * @return
         */
        Account findById(Integer id);
    
        /**
         * 用户1向用户2转账
         * @param user1
         * @param user2
         * @param money
         */
        void transfer(String user1, String user2, Double money);
    }
    /**
     * 账户业务层实现类
     */
    @Service("accountService")
    public class AccountServiceImpl implements AccountService {
    
        @Autowired
        private AccountDao accountDao;
    
        /**
         * 根据id查询账户信息
         * @param id
         * @return
         */
        @Override
        public Account findById(Integer id) {
            return accountDao.findById(id);
        }
    
        /**
         * 用户1向用户2转账
         * @param user1
         * @param user2
         * @param money
         */
        @Override
        public void transfer(String user1, String user2, Double money) {
            // 查询用户1
            Account account1 = accountDao.findByName(user1);
            // 查询用户2
            Account account2 = accountDao.findByName(user2);
            // 转账
            account1.setMoney(account1.getMoney() - money);
            account2.setMoney(account2.getMoney() + money);
            // 更新用户1
            accountDao.update(account1);
    
            // int i = 1/0;
    
            // 更新用户2
            accountDao.update(account2);
        }
    }

    7.测试业务层

    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = "classpath:applicationContext-service.xml")
    public class AccountServiceTest {
    
        @Autowired
        private AccountService accountService;
    
        @Test
        public void testTransfer() {
            accountService.transfer("张三", "李四", 100.0);
        }
    }

    8.在 oa_web 的 resources 目录下创建 applicationContext.xml 和 springmvc.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"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
                http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
                http://www.springframework.org/schema/context
                http://www.springframework.org/schema/context/spring-context-4.2.xsd">
    
        <import resource="applicationContext-dao.xml"/>
        <import resource="applicationContext-service.xml"/>
    </beans>
    <?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-4.2.xsd
                http://www.springframework.org/schema/mvc
                http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
                http://www.springframework.org/schema/context
                http://www.springframework.org/schema/context/spring-context-4.2.xsd">
    
        <!-- 开启注解扫描 -->
        <context:component-scan base-package="com.fgy.oa.controller"/>
    
        <!-- 处理器映射器、处理器适配器
            默认注册处理请求,参数和返回值的类。主要实现了两个接口:HandlerMapping与HandlerAdapter。 -->
        <mvc:annotation-driven/>
    
        <!-- 静态资源不拦截 -->
        <mvc:default-servlet-handler/>
    
        <!-- 视图解析器 -->
        <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/WEB-INF/pages/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    </beans>

      controller 代码:

    /**
     * 账户表现层
     */
    @Controller
    @RequestMapping("/account")
    public class AccountController {
    
        @Autowired
        private AccountService accountService;
    
        /**
         * 查询账户详情
         * @param model
         * @param id
         * @return
         */
        @RequestMapping("/findDetail/{id}")
        public String findDetail(Model model, @PathVariable(name = "id") Integer id) {
            Account account = accountService.findById(id);
            model.addAttribute("account", account);
            return "detail";
        }
    
        /**
         * 测试转账
         * @return
         */
        @RequestMapping("/transfer")
        public String transfer() {
            accountService.transfer("张三", "李四", 100.0);
            return "success";
        }
    }

      index.jsp 页面和 detail.jsp页面:

    <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
    <html>
    <head>
        <title>index</title>
    </head>
    <body>
    <a href="${pageContext.request.contextPath}/account/findDetail/1">查询详情</a> <br/>
    <a href="${pageContext.request.contextPath}/account/transfer">测试事务是否正常</a>
    </body>
    </html>
    <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
    <html>
    <head>
        <title>detail</title>
    </head>
    <body>
    id:${account.id} <br/>
    name:${account.name} <br/>
    money:${account.money} <br/>
    <img src="${pageContext.request.contextPath}/images/test.jpg">测试静态文件是否放行
    </body>
    </html>

    9.配置 web.xml 文件

    <!DOCTYPE web-app PUBLIC
            "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
            "http://java.sun.com/dtd/web-app_2_3.dtd" >
    
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://java.sun.com/xml/ns/javaee"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
             version="3.0">
    
        <!-- 配置过滤器,解决中文乱码的问题 -->
        <filter>
            <filter-name>characterEncodingFilter</filter-name>
            <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
            <!-- 指定字符集 -->
            <init-param>
                <param-name>encoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
            <!-- forceEncoding=true意思是指无论客户端请求是否包含了编码,都用过滤器里的编码来解析请求 -->
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>false</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>characterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        <!-- 配置 spring 核心监听器 -->
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        <!-- ContextLoaderListener 默认去WEB-INF下加载名称为applicationContext.xml文件
            重新指定配置文件的路径 -->
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </context-param>
    
        <!-- 配置 SpringMVC的核心控制器 -->
        <servlet>
            <servlet-name>dispatcherServlet</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <!-- 配置Servlet的初始化参数,读取spring-web的配置文件,创建spring容器
                 如果不指定,默认读取 /WEB-INF/dispatcherServlet-servlet.xml文件 -->
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:springmvc.xml</param-value>
            </init-param>
            <!-- 配置servlet启动时加载对象,servlet默认发起请求时才创建,这里是加载配置文件,启动时就需要加载 -->
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    </web-app>

    10.启动 Tomcat 测试:

      ..........................

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  • 原文地址:https://www.cnblogs.com/roadlandscape/p/12348260.html
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