WEB开发框架配置文件和各层注解
记录一点关于这次“项目管理”课程做的轻量级企业ERP的关于框架部分的知识
我们采取的是SpringMVC + Spring + Hibernate开发的
本文主要记录: 框架需要的配置文件的配置 + Dao层写法 + Service层写法 + Controller写法
注:有一些非关乎框架的主要部分,所以博主没有列出来,所以不是直接copy就可以运行,只是参考学习哈!
spring的配置文件还有spring mvc的配置文件如下:
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" 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-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!-- 他的作用是隐式地向 Spring 容器注册 AutowiredAnnotationBeanPostProcessor、 CommonAnnotationBeanPostProcessor、 PersistenceAnnotationBeanPostProcessor、 RequiredAnnotationBeanPostProcessor 这 4 个BeanPostProcessor。 --> <context:annotation-config /> <!-- 关于所在包注解的自动扫描配置(也会注入上面4个BeanPostProcessor)--> <context:component-scan base-package="cn.edu.fjnu.hubmis" /> <!-- 数据库对应的配置信息 --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- dataSource配置信息 --> <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource"> <property name="driver" value="${proxool.driverClassName}"/> <property name="driverUrl" value="${proxool.url}"/> <property name="user" value="${proxool.username}"/> <property name="password" value="${proxool.password}"/> <property name="alias" value="${proxool.alias}" /> <property name="maximumActiveTime" value="${proxool.maximumActiveTime}" /> <property name="prototypeCount" value="${proxool.prototypeCount}" /> <property name="trace" value="${proxool.trace}" /> <property name="verbose" value="${proxool.verbose}" /> <property name="houseKeepingSleepTime" value="${proxool.houseKeepingSleepTime}"/> <property name="maximumConnectionCount" value="${proxool.maximumConnectionCount}" /> <property name="minimumConnectionCount" value="${proxool.simultaneousBuildThrottle}" /> <property name="simultaneousBuildThrottle" value="${proxool.simultaneousBuildThrottle}" /> <property name="houseKeepingTestSql" value="${proxool.houseKeepingTestSql}" /> </bean> <!-- Spring整合hibernate主配置文件(hibernate.cfg.xml) --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <!-- 引用你自己Spring配置的数据库连接池 --> <property name="dataSource" ref="dataSource"/> <!-- 扫描bean的包 --> <property name="packagesToScan" value="cn.edu.fjnu.hubmis.model"/> <!-- 配置其他hibernate特性属性 --> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop> <prop key="hibernate.connection.pool_size">5</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> <prop key="hibernate.format_sql">false</prop> <prop key="hibernate.show_sql">true</prop> <prop key="current_session_context_class">thread</prop> <prop key="hibernate.autoReconnect">true</prop> </props> </property> </bean> <!-- 关于hibernateTemplate使用--> <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- 关于事务管理部分的配置 --> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" /> </beans>
dispatcher-servlet.xml
<?xml version="1.0" encoding="UTF-8"?> <beans default-lazy-init="true" xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <!-- 默认的注解映射的支持(方法一) --> <mvc:annotation-driven /> <!-- 手动配置注解映射支持的两个类(方法二) --> <!--Spring3.1开始的注解 HandlerMapping --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" /> --> <!--Spring3.1开始的注解 HandlerAdapter --> <!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter" /> --> <!-- 对静态资源文件的访问 方案一 (二选一) --> <mvc:default-servlet-handler /> <!-- 对静态资源文件的访问 方案二 (二选一) <mvc:resources mapping="/images/**" location="/images/" cache-period="31556926" /> <mvc:resources mapping="/js/**" location="/js/" cache-period="31556926" /> <mvc:resources mapping="/css/**" location="/css/" cache-period="31556926" /> --> <!-- 扫描哪一些包为controller --> <context:component-scan base-package="cn.edu.fjnu.hubmis.web.controller"/> <!-- 视图解释类 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/" /> <property name="suffix" value=".jsp" /><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 --> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> </bean> </beans>
web.xml中的配置:
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- 统一错误页面去处 --> <error-page> <error-code>404</error-code> <location>/WEB-INF/public/404.jsp</location> </error-page> <error-page> <error-code>500</error-code> <location>/WEB-INF/public/404.jsp</location> </error-page> <!-- 告诉listener,Spring配置文件路径 (applicationContext.xml) --> <context-param> <description>SpringXMLPath</description> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <listener> <description>SpringContextLoaderListener</description> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 全站编码配置, 利用spring提供的编码过滤器 --> <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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- SpringMVC 配置,告知配置文件路径(dispatcher-servlet.xml) --> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/dispatcher-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 避免Hibernate懒加载异常,能够让Session请求解释完成之后再关闭(所以才能够避免懒加载异常) --> <!-- <filter> <filter-name>OpenSessionInViewFilter</filter-name> <filter-class> org.springframework.orm.hibernate3.support.OpenSessionInViewFilter </filter-class> </filter> <filter-mapping> <filter-name>OpenSessionInViewFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> --> </web-app>
Controller层写法
package cn.demo; import javax.annotation.Resource; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import cn.edu.fjnu.hubmis.model.personnel.Employee; /** * * Simple to Introduction * * @ProjectName: [HubMIS] * @Package: [cn.edu.fjnu.hubmis.web.controller] * @ClassName: [helloworldController] * @Description: [测试:spring mvc,controller] * @Author: [逍遥梦] * @CreateDate: [2014-3-11 下午5:19:00] * @UpdateUser: [逍遥梦] * @UpdateDate: [2014-3-11 下午5:19:00] * @UpdateRemark: [说明本次修改内容] * @Version: [v1.0] * */ /* 还可以加入@RequestMapping ( * 财务部:@RequestMapping(value = "/finance") * 人事部:@RequestMapping(value = "/personnel") * 其他的根据需要来定 * ) * @RequestMapping(value = "/monitor", method = RequestMethod.GET) * 表示此类接受 http://localhost:8080/monitor这类型的访问请求,请求的方式为Get请求, * 不写默认为两种请求方式都处理 * */ @Controller @RequestMapping(value = "/personnel") public class employeeController { /*你下面需要用到的ServiceImpl,由于之前已经把xxxxServiceImpl都写出来了,并通过了测试,所以直接用你之前注入的service就可以了 * 如: * 我这里想完成一个员工的添加, 我要往helloworldController引入EmployeeServiceImpl对象,用IEmployeeService接口来定义它 * 但名字为employeeServiceImpl(第一个字母小写) * * * */ @Resource private IEmployeeService employeeServiceImpl; //请求URL到处理器功能处理方法的映射,如果类名写了映射的地址如/monitor,这里又写了/hello //那么当访问http://localhost:8080/monitor/hello时,就会调用这个方法 //如果类名头没写,则访问http://localhost:8080/hello时,调用此方法 @RequestMapping(value = "/hello") public ModelAndView hello() { /* jsp -> controller 传递的数据*/ /*此处为传递过来的数据对象类(这个具体看你们开发的过程中需要哪些类,可以自己定义。) * 如: * (data) 一般会传递JSON格式,接受 * Form -> javabean * * */ //这部分,我们要将前台的数据转换成我们需要的javabean的类. Employee employee = null; /* data -> service */ employeeServiceImpl.addEmployee(employee); //如果有一些是有返回值的,将返回的结果Result返回给jsp页面 /* Result -> return: jsp*/ ModelAndView mv = new ModelAndView(); // 添加模型数据 可以是任意的POJO对象,我这里放了字符串 // A项目的开发人员,你们可以放你们的Page,List<Page>或者单个javabean实体对象! mv.addObject("message", "ResultObject"); // 设置逻辑视图名,视图解析器会根据该名字解析到具体的视图页面: //如这里,它会去找hello.jsp这个页面 mv.setViewName("hello"); return mv; //模型数据和逻辑视图名 } /* * @RequestBody 将HTTP请求正文转换为适合的HttpMessageConverter对象。 @ResponseBody 将内容或对象作为 HTTP 响应正文返回,并调用适合HttpMessageConverter的Adapter转换对象,写入输出流。 * */ /* * 还想学习的可以看:http://snowolf.iteye.com/blog/577989 * */ }
Service层写法
package cn.demo; import javax.annotation.Resource; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import cn.edu.fjnu.hubmis.dao.personnel.IEmployeeDao; import cn.edu.fjnu.hubmis.model.personnel.Employee; /** * * Simple to Introduction * * @ProjectName: [HubMIS] * @Package: [cn.demo] * @ClassName: [EmployeeServiceImpl] * @Description: [描述该类的功能] * @Author: [逍遥梦] * @CreateDate: [2014-3-19 上午8:35:02] * @UpdateUser: [逍遥梦] * @UpdateDate: [2014-3-19 上午8:35:02] * @UpdateRemark: [说明本次修改内容] * @Version: [v1.0] * * Demo作用:大家来参考此XxxxxServiceImpl的写法 * * 明白Service所处的位置: * Jsp -> Controller -> Service -> Dao -> hibernate -> DataBase * Result -> return: Service -> return: Controller -> return: Jsp * * * 现在会涉及到几个问题: * 1.springmvc中controller和jsp之间的几种传值(写到cn.demo.helloworldController中) * 2. * 即: * 如果Controller需要一个员工Employee, 这个JavaBean类已经存在,Controller将"表单" * */ /*Service的实现类要加上 Transactional事务处理注解 和 service注解*/ @Transactional @Service public class EmployeeServiceImpl implements IEmployeeService { /*注入dao对象*/ @Resource private IEmployeeDao employeeDaoImpl; public void addEmployee(Employee employee){ //增加一个员工 employeeDaoImpl.addEmployee(employee); } }
Dao层写法
package cn.edu.fjnu.hubmis.dao.personnel.impl; import javax.annotation.Resource; import org.springframework.stereotype.Repository; import cn.edu.fjnu.hubmis.dao.common.IGenericDao; import cn.edu.fjnu.hubmis.dao.personnel.IEmployeeDao; import cn.edu.fjnu.hubmis.model.personnel.Employee; import cn.edu.fjnu.hubmis.utils.Page; @Repository public class EmployeeDaoImpl implements IEmployeeDao{ @Resource private IGenericDao genericDAO; public boolean addEmployee(Employee employee) { try { this.genericDAO.save(employee); return true; } catch (Exception e) { return false; } } public Employee getEmployeeByEId(String eId) { return (Employee) this.genericDAO.get(Employee.class, eId); } public boolean updateEmployee(Employee employee) { try { this.genericDAO.update(employee); return true; } catch (Exception e) { return false; } } public Page<Employee> getAllEmployee(int cId, int pageSize, int index) { return this.genericDAO.findPageBySQL(Employee.class, "select * from T_employee where ER_company_id ="+cId, pageSize, index); } public boolean deleteEmployee(Employee employee) { try { this.genericDAO.delete(employee); return true; } catch (Exception e) { return false; } } }
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