SSM整合开发办公系统

项目结构

oa——父module

全局定义

<?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.chen</groupId>
    <artifactId>oa</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>oa_dao</module>
        <module>oa_service</module>
        <module>oa_web</module>
    </modules>

    <properties>
        <spring.version>4.3.14.RELEASE</spring.version>
    </properties>
</project>

oa_dao——持久层

<?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">
    <parent>
        <artifactId>oa</artifactId>
        <groupId>com.chen</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>oa_dao</artifactId>

    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.45</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.4</version>
        </dependency>
        <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.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
    </dependencies>
</project>

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

    <!--开启自动扫描-->
    <context:component-scan base-package="com.oa.dao"/>

    <!--配置数据源-->
    <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/oa?useUnicode=true&amp;characterEncoding=utf-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>

    <!--配置session工厂-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--映射数据源-->
        <property name="dataSource" ref="dataSource"/>
        <!--起个别名，在映射文件中使用的时候可以直接使用类 -->
        <property name="typeAliasesPackage" value="com.oa.entity"/>
    </bean>

    <!--映射器接口-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sessionFactory"/>
        <!--扫描basePackage属性包路径下的所有接口，并与映射的配置文件关联起来，生成持久化操作对象-->
        <!--所以接口和映射文件都必须在这个包路径下-->
        <property name="basePackage" value="com.oa.dao"/>
    </bean>
</beans>

oa_service——业务层

<?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">
    <parent>
        <artifactId>oa</artifactId>
        <groupId>com.chen</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>oa_service</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.chen</groupId>
            <artifactId>oa_dao</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <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>1.8.13</version>
        </dependency>
    </dependencies>
</project>

spring-service.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"
       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">

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

    <context:component-scan base-package="com.oa.service"/>
    <!--申明事务需要打开aspectj自动代理-->
    <aop:aspectj-autoproxy/>

    <!--声明事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--声明通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="search*" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--将通知和切入点关联起来-->
    <aop:config>
        <aop:pointcut id="txpc" expression="execution(* com.oa.service.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txpc"/>
    </aop:config>
</beans>

oa_web——表现层

<?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">
    <parent>
        <artifactId>oa</artifactId>
        <groupId>com.chen</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>oa_web</artifactId>
    <packaging>war</packaging>
    <name>oa_web Maven Webapp</name>
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.chen</groupId>
            <artifactId>oa_service</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <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>
    <build>
        <finalName>oa_web</finalName>
    </build>
</project>

spring-web.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"
       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">

    <import resource="spring-service.xml"/>
    
    <context:component-scan base-package="com.oa.controller"/>
    <!--开启MVC注解驱动-->
    <mvc:annotation-driven/>

    <!--静态资源交由servlet处理-->
    <mvc:default-servlet-handler/>

    <!--配置视图解析-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

拦截器设置

自定义拦截器

public class LoginInterceptor implements HandlerInterceptor {
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        /** 过滤有关键字login的请求 **/
        String url = httpServletRequest.getRequestURI();
        if (url.toLowerCase().indexOf("login")>=0){
            return true;
        }
        /** 放行登陆用户的请求 **/
        HttpSession session = httpServletRequest.getSession();
        if (session.getAttribute("employee")!=null){
            return true;
        }
        httpServletResponse.sendRedirect("/to_login");
        return false;
    }

    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}

配置拦截器，使拦截器生效

<!--配置拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <bean class="com.oa.global.LoginInterceptor"/>
        </mvc:interceptor>
    </mvc:interceptors>

登陆实现

@Service("loginService")
public class LoginServiceImpl implements LoginService {
    @Autowired
    private EmployeeDao employeeDao;

    public Employee login(String num, String password) {
        Employee employee = employeeDao.select(num);
        if (employee!=null&&employee.getPassword().equals(password)){
            return employee;
        }
        return null;
    }

    public void changePassword(Employee employee) {
        employeeDao.update(employee);
    }
}

@Controller
public class LoginController {
    @Autowired
    private LoginService loginService;

    @RequestMapping("/to_login")
    public String toLogin(){
        return "login";
    }

    @RequestMapping("/login")
    public String login(HttpSession session, @RequestParam String num, @RequestParam String password){
        Employee employee = loginService.login(num,password);
        if (employee==null){
            return "redirect:to_login";
        }
        session.setAttribute("employee",employee);
        return "redirect:self";
    }
    @RequestMapping("/self")
    public String self(){
        return "self";
    }
    @RequestMapping("/quit")
    public String quit(HttpSession session){
        session.setAttribute("employee",null);
        return "redirect:to_login";
    }

    @RequestMapping("/to_change_password")
    public String toChangePassword(){
        return "change_password";
    }

    @RequestMapping("/change_password")
    public String changePassword(HttpSession session, @RequestParam String old, @RequestParam String new1,@RequestParam String new2){
        Employee employee = (Employee) session.getAttribute("employee");
        if (employee.getPassword().equals(old)){
            if (new1.equals(new2)){
                employee.setPassword(new1);
                loginService.changePassword(employee);
                return "redirect:self";
            }
        }
        return "redirect:to_change_password";
    }
}

报销单管理

报销单处理流程：填写——提交——审核——打款

项目部署

War包

War包一般是在进行Web开发时，通常是一个网站Project下的所有源码的集合，里面包含前台HTML/CSS/JS的代码，也包含Java的代码。 当开发人员在自己的开发机器上调试所有代码并通过后，为了交给测试人员测试和未来进行产品发布，都需要将开发人员的源码打包成War进行发布。War包可以放在Tomcat下的webapps或者word目录下，随着tomcat服务器的启动，它可以自动被解压。

Tomcat服务器

Tomcat服务器是一个免费的开放源代码的Web应用服务器，属于轻量级应用服务器，在中小型系统和并发访问用户不是很多的场合下被普遍使用，是开发和调试JSP程序的首选，最新的Servlet和JSP规范总是能在Tomcat中得到体现。

正准备打包部署的时候，发现oa_web的target目录下已经生成了oa_web.war，把他复制到tomcat的webapps下就可以运行

源码地址：https://github.com/WE666/oa

总结

在这个项目中需要注意的技术点
1.声明式事务封装在业务层。封装在持久层太细，封装在表现层太粗。
2.Spring和Mybatis整合配置映射器接口。
3.不定向表单的处理。用集合来接收不定向表单的值

参考

ssm+maven多模块项目整合
Maven多模块项目搭建+整合SSM框架