SSM三大框架的整合

考SSM三大框架的整合〔Spring+SpringMVC+MyBatis〕 考1.1、SpringSpring是一个开源框架，Spring是于2003年兴起的一个轻量级的Java开发框架，由RodJohnson在其著作ExpertOne-On-OneJ2EEDevelopmentandDesign中阐述的部分理念和原型衍生而来。它是为了解决企业应用开发的复杂性而创建的。Spring使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而，Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何Java应用都可以从Spring中受益。简单来说，Spring是一个轻量级的控制反转〔IoC〕和面向切面〔AOP〕的容器框架。1.2、SpringMVCSpringMVC属于SpringFrameWork的后续产品，已经融合在SpringWebFlow里面。SpringMVC别离了控制器、模型对象、分派器以及处理程序对象的角色，这种别离让它们更容易进行定制。1.3、MyBatisMyBatis本是apache的一个开源项目iBatis,2010年这个项目由apachesoftwarefoundation迁移到了googlecode，并且改名为MyBatis。MyBatis是一个基于Java的持久层框架。iBATIS提供的持久层框架包括SQLMaps和DataAccessObjects〔DAO〕MyBatis消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis使用简单的XML或注解用于配置和原始映射，将接口和Java的POJOs〔PlainOldJavaObjects，普通的Java对象〕映射成数据库中的记录。2、开发环境搭建如果需要，参看之前的博文：://blog.csdn.net/zhshulin/article/details/3077987333、MavenWeb项目创建考如果需要，参看之前的博文：://blog.csdn.net/zhshulin/article/details/37921705的搭建以及项目的创建，参看上面的博文。这次整合我分了2个配置文件，分别是spring-mybatis.xml，包含spring和mybatis的配置文件，还有个是spring-mvc的配置文件，此外有2个资资源文件：jdbc.propertis和log4j.properties。完整目录结构如下：使用框架都是较新的版本：Spring4.0.2RELEASESpringMVC4.0.2RELEASEMyBatis3.2.6考的JAR包，这都是基本的JAR包，每个包的是干什么的都有注释，就不再多说了。pom.xml<properties><!--spring版本号--><spring.version>4.0.2.RELEASE</spring.version><!--mybatis版本号--><mybatis.version>3.2.6</mybatis.version><!--log4j日志文件管理包版本--><slf4j.version>1.7.7</slf4j.version><log4j.version>1.2.17</log4j.version></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version>--><scope>test</scope></dependency><!--spring核心包--><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version></dependency>考<<dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-oxm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId>考<<version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><!--mybatis核心包--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><!--mybatis/spring包--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.2</version></dependency><!--导入javaeejar包--><dependency><groupId>javax</groupId><<artifactId>javaee-api</artifactId><version>7.0</version></dependency><!--导入Mysql数据库链接jar包--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.30</version></dependency><!--导入dbcp的jar包，用来在applicationContext.xml中配置数据库--><dependency><groupId>commons-dbcp</groupId><artifactId>commons-dbcp</artifactId><version>1.2.2</version></dependency><!--JSTL标签类--><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!--logstart--><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>${log4j.version}</version></dependency>考<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.1.41</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><!--logend--><!--映入JSON--><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.13</version></dependency><!--上传组件包--><dependency>考<<groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency><dependency><groupId>commons-codec</groupId><artifactId>commons-codec</artifactId><version>1.9</version></dependency></dependencies>所有需要的JAR包都引入以后，首先进行Spring与MyBatis的整合，然后再进考perties〔文件编码修改为utf-8〕driver=com.mysql.jdbc.Driverurl=jdbc:mysql://10.221.10.111:8080/db_zslusername=demaopassword=demaoinitialSize=0maxActive=20maxIdle=20minIdle=1maxWait=60000考这个文件就是用来完成spring和mybatis的整合的。这里面也没多少行spring-mybatis.xml<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="://springframework.org/schema/beans"xmlns:xsi="://w3.org/2001/XMLSchema-instance"xmlns:p="://springframework.org/schema/p"xmlns:context="://springframework.org/schema/context"xmlns:mvc="://xsi:schemaLocation="springframework.org/schema/mvc"://springframework.org/schema/beans://springframework.org/schema/beans/spring-beans-3.1.xsd://springframework.org/schema/context://springframework.org/schema/context/spring-context-3.1.xsd://springframework.org/schema/mvc://springframework.org/schema/mvc/spring-mvc-4.0.xsd"><!--自动扫描--><context:component-scanbase-package="com.hnust"/><!--引入配置文件--><beanid="propertyConfigurer"class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">考<propertyname="location"value="classpath:jdbc.properties"/></bean><beanid="dataSource"mons.dbcp.BasicDataSource"class="org.apachedestroy-method="close"><propertyname="driverClassName"value="${driver}"/><propertyname="url"value="${url}"/><propertyname="username"value="${username}"/><propertyname="password"value="${password}"/>--初始化连接大小--><propertyname="initialSize"value="${initialSize}"></property>--连接池最大数量--><propertyname="maxActive"value="${maxActive}"></property>--连接池最大空闲--><propertyname="maxIdle"value="${maxIdle}"></property>--连接池最小空闲--><propertyname="minIdle"value="${minIdle}"></property><propertyname="maxWait"value="${maxWait}"></property></bean><!--spring和MyBatis完美整合，不需要mybatis的配置映射文件--><beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">考<<propertyname="dataSource"ref="dataSource"/><!--自动扫描mapping.xml文件--><propertyname="mapperLocations"value="classpath:com/cn/hnust/mapping/*.xml"></property></bean><beanclass="org.mybatis.spring.mapper.MapperScannerConfigurer"><propertyname="basePackage"value="com.hnust.dao"/><propertyname="sqlSessionFactoryBeanName"value="sqlSessionFactory"></property></bean><!--(事务管理)transactionmanager,useJtaTransactionManagerforglobaltx--><beanid="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><propertyname="dataSource"ref="dataSource"/></bean></beans>考perties为了方便调试，一般都会使用日志来输出信息，Log4j是Apache的一个开放源代码项目，通过使用Log4j，我们可以控制日志信息输送的目的地是控制台、文件、GUI组件，甚至是套接口服务器、NT的事件记录器、UNIXSyslog们也可以控制每一条日志的输出格式；通过定义每一条日志信息的的级别，我们能够更加细致地控制日志的生成过程。Log4j的配置很简单，而且也是通用的，下面给出一个基本的配置，换到其他项目中也无需做多大的调整，如果想做调整或者想了解Log4j的各种配置，参看我转载的一篇博文，很详细：:///zhshulin/article/details/37937365下面给出配置文件目录：loglog4j.rootLogger=INFO,Console,Filelog4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.Target=System.outlog4j.appender.Console.layout=org.apache.log4j.PatternLayoutlog4j.appender.Console.layout.ConversionPattern=[%c]-%m%n#文件大小到达指定尺寸的时候产生一个新的文件log4j.appender.File=org.apache.log4j.RollingFileAppender考loglog4j.appender.File.File=logs/ssm.loglog4j.appender.File.MaxFileSize=10MBlog4j.appender.File.Threshold=ALLlog4j.appender.File.layout=org.apache.log4j.PatternLayoutlog4j.appender.File.layout.ConversionPattern=[%p][%d{yyyy-MM-ddHH\:mm\:ss}][%c]%m%n经过以上步骤〔到4.2.2，log4j不配也没影响〕，我们已经完成了Spring和mybatis的整合，这样我们就可以编写一段测试代码来试试是否成功了。既然我们需要测试，那么我们就需要建立在数据库中建立一个测试表，这个表建的很简单，SQL语句为：DROPTABLEIFEXISTS`user_t`;CREATETABLE`user_t`(`id`int(11)NOTNULLAUTO_INCREMENT,`user_name`varchar(40)NOTNULL,`password`varchar(255)NOTNULL,`age`int(4)NOTNULL,PRIMARYKEY(`id`))ENGINE=InnoDBAUTO_INCREMENT=2DEFAULTCHARSET=utf8;/*Dataforthetable`user_t`*/考insertinto`user_t`(`id`,`user_name`,`password`,`age`)values(1,'测试','sfasgfaf',24);参参考博文：://blog.csdn.net/zhshulin/article/details/23912615这个可根据表自动创建实体类、MyBatis映射文件以及DAO接口，当然，我习惯将生成的接口名改为IUserDao，而不是直接用它生成的UserMapper。如果不想麻烦就可以不改。完成后将文件复制到工程中。如图：目录结构：考下面给出具体的内容：下面给出具体的内容：IUserService.javepackagecom.hnust.service;importcom.hnust.pojo.User;publicinterfaceIUserService{publicUsergetUserById(intuserId);}UserServiceImplUserServiceImpl.javapackagepackagecom.hnust.service.impl;importjavax.annotation.Resource;importorg.springframework.stereotype.Service;importcom.hnust.dao.IUserDao;考importimportcom.hnust.pojo.User;importcom.hnust.service.IUserService;@Service("userService")publicclassUserServiceImplimplementsIUserService{@ResourceprivateIUserDaouserDao;@OverridepublicUsergetUserById(intuserId){//TODOAuto-generatedmethodstubreturnthis.userDao.selectByPrimaryKey(userId);}}测试类在src/test/java中建立，下面测试类中注释掉的部分是不使用Spring时，一般情况下的一种测试方法；如果使用了Spring那么就可以使用注解的方式来引入配置文件和类，然后再将service接口对象注入，就可以进行测如果测试成功，表示Spring和Mybatis已经整合成功了。输出信息使用packagepackageorg.zsl.testmybatis;importjavax.annotation.Resource;考importorg.apache.log4j.Logger;importorg.junit.Before;importorg.junit.Test;importorg.junit.runner.RunWith;importorg.springframework.context.ApplicationContext;importorg.springframework.context.support.ClassPathXmlApplicationContext;importorg.springframework.test.context.ContextConfiguration;importorg.springframework.test.context.junit4.SpringJUnit4ClassRunner;importcom.alibaba.fastjson.JSON;importcom.hnust.pojo.User;importcom.hnust.service.IUserService;@RunWith(SpringJUnit4ClassRunner.class)SpringJUnit4ClassRunner类@ContextConfiguration(locations={"classpath:spring-mybatis.xml"})publicclassTestMyBatis{privatestaticLoggerlogger=Logger.getLogger(TestMyBatis.class);//privateApplicationContextac=null;@ResourceprivateIUserServiceuserService=null;//////@Beforepublicvoidbefore(){ac=newClassPathXmlApplicationContext("applicationContext.xml");考////userService=(IUserService)ac.getBean("userService");//}@Testpublicvoidtest1(){Useruser=userService.getUserById(1);//System.out.println(user.getUserName());//logger.info("值："+user.getUserName());logger.info(JSON.toJSONString(user));}}测测试结果：至至此，完成Spring和mybatis这两大框架的整合，下面在继续进行SpringMVC的整合。上面已经完成了2大框架的整合，SpringMVC的配置文件单独放，然后在web.xml中配置整合。考配置里面的注释也很详细，在此就不说了，主要是自动扫描控制器，视图模式，注解的启动这三个。<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="://springframework.org/schema/beans"xmlns:xsi="://w3.org/2001/XMLSchema-instance"xmlns:p="://springframework.org/schema/p"xmlns:context="://springframework.org/schema/context"xmlns:mvc="://xsi:schemaLocation="springframework.org/schema/mvc"://springframework.org/schema/beans://springframework.org/schema/beans/spring-beans-3.1.xsd://springframework.org/schema/context://springframework.org/schema/context/spring-context-3.1.xsd://springframework.org/schema/mvc://springframework.org/schema/mvc/spring-mvc-4.0.xsd"><!--自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器--><context:component-scanbase-package="com.hnust.controller"/><!--防止IE执行AJAX时，返回JSON出现下载文件--><beanid="mappingJacksonMessageConverter"class="org.springframework..converter.json.MappingJacksonMessageConverter"><propertyname="supportedMediaTypes"><list><value>text/html;charset=UTF-8</value>考</list></property></bean><!--启动SpringMVC的注解功能，完成请求和注解POJO的映射--><beanclass="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"><propertyname="messageConverters"><list><refbean="mappingJacksonMessageConverter"/><!--JSON转换器--></list></property></bean><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><propertyname="prefix"value="/WEB-INF/jsp/"/><propertyname="suffix"value=".jsp"/></bean><beanid="multipartResolver"class="org.springframework.web.multipartmonsMultipartResolver">mons<!--默认编码--><propertyname="defaultEncoding"value="utf-8"/><!--文件大小最大值-->考<<propertyname="maxUploadSize"value="10485760000"/><!--内存中的最大值--><propertyname="maxInMemorySize"value="40960"/></bean></beans>考这里面对spring-mybatis.xml的引入以及配置的spring-mvc的Servlet就是为了完成SSM整合，之前2框架整合不需要在此处进行任何配置。配置一样有详细注释，不多解释了。web.xml<?xmlversion="1.0"encoding="UTF-8"?><web-appxmlns:xsi="://w3.org/2001/XMLSchema-instance"xmlns="://java.sun/xml/ns/javaee"xsi:schemaLocation="://java.sun/xml/ns/javaee://java.sun/xml/ns/javaee/web-app_3_0.xsd"version="3.0"><display-name>ArchetypeCreatedWebApplication</display-name><!--Spring和mybatis的配置文件--><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mybatis.xml</param-value></context-param><!--编码过滤器--><filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><async-supported>true</async-supported><init-param><param-name>encoding</param-name>考<<param-value>UTF-8</param-value></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!--Spring监听器--><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!--防止Spring内存溢出监听器--><listener><listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class></listener><!--SpringMVCservlet--><servlet><servlet-name>SpringMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mvc.xml</param-value></init-param><load-on-startup>1</load-on-startup>考<async<async-supported>true</async-supported></servlet><servlet-mapping><servlet-name>SpringMVC</servlet-name><!--此处可以可以配置成*.do，对应struts的后缀习惯--><url-pattern>/</url-pattern></servlet-mapping><welcome-file-list><welcome-file>/index.jsp</welcome-file></welcome-file-list></web-app>那么恭喜你，如果失败了，继续调试吧，作为程序员就是不停的与BUG做斗争！showUsershowUser.jsp此页面仅输出一下用户名，完成一个完整的简单流程。考<%@pagelanguage="java"import="java.util.*"pageEncoding="utf-8"%><!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN"><html><head><title>测试</title></head><body>${user.userName}</body></html>UserController.java控制器packagepackagecom.hnust.controller;importjavax.annotation.Resource;importjavax.servlet..ServletRequest;importorg.springframework.stereotype.Controller;importorg.springframework.ui.Model;importorg.springframework.web.bind.annotation.RequestMapping;importcom.hnust.pojo.User;importcom.hnust.service.IUserService;@Controller考@RequestMapping@RequestMapping("/user")publicclassUserController{@ResourceprivateIUserServiceuserService;@RequestMapping("/showUser")publicStringtoIndex(ServletRequestrequest,Modelmodel){intuserId=Integer.parseInt(request.getParameter("id"));Useruser=this.userService.getUserById(userId);model.addAttribute("user",user);return"showUser";}}输入地址输入地址：localhost:8080/项目名称/user/showUser?id=1至此，SSM三大框架的整合就完成了，在此基础上可再添加其他功能。考///Spring3.0.1包org.springframework.web-3.0.1系列//公共包slf4j-api-1.5.6.jarslf4j-log4j12-1.5.6.jarlog4j-1.2.13.jarcommonscommons-logging-1.1.1.jarasm-3.1.jarcglib-2.2.jar///mybatis与Spring的整合所需的包mybatismybatis-3.0.5.jaraopallianceaopalliance-1.0.jarmybatismybatis-spring-1.0.1.jarmybatismybatis-generator-core-1.3.1.jar(mybatis代码生成器包)////jdbcdrivenmysqlmysql-connector-java-3.1.6-bin.jar///JSR验证-Hibernatevalidate4.1hibernatehibernate-validator-4.1.0.Final.jarvalidationvalidation-api-1.0.0.GA.jar////SpringJson支持包jacksonjackson-all-1.8.1.jar考2.web.xml配置ServletServlet配置orgorg.springframework.web.servlet.DispatcherServletinitinit-param配置servlet初始化文件.以以及servlet-mapping配置.应应用路径配置wwebAppRootKeyLogLog4j配置LogLog4jConfigLocationLogLog4jRefreshIntervalSpringSpring上下文配置contextConfigLocationcontextConfigLocationSpringSpring字符集过滤器配置orgorg.springframework.web.filter.CharacterEncodingFilterSpringSpring监听器配置orgorg.springframework.web.context.ContextLoaderListenerloglog4j监听器配置orgorg.springframework.web.util.Log4jConfigListener考3.springmvc-servlet.xml配置<<mvc:annotation-driven/>组组件scanner主要是自动去注入指定包里的对象<<context:component-scanbasebase-package="com.los.mvc.controller"/>ViewResolverViewResolver&View映射关系InternalResourceViewResolverInternalResourceViewResolver基于resource对jsp/jstl的支持<<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><<propertyname="prefix"value="/WEB-INF/views/"/><<propertyname="suffix"value=".jsp"/><<!--InternalResourceViewResolverviewClass默认值就是JstlView--><<propertyname="viewClass"valuevalue="org.springframework.web.servlet.view.JstlView"></property><</bean>自定义拦截器配置自定义拦截器配置<<mvc:interceptors><<mvc:interceptor><<mvc:mappingpath="/json*"/><<beanclass="erceptor.MyInterceptor"></bean><</mvc:interceptor><</mvc:interceptors>考国国际化配置anid="messageSource"classclass="org.springframework.context.support.ResourceBundleMessageSource"><<propertyname="basename"value="message"></property><</bean>4.Spring上下文--applicationContext.xml配置支支持注解nclassclass="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"><</bean>anclassclass="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"><</bean><<importresource="service.xml"/><<importresource="dao.xml"/><<importresource="orm.xml"/>serviceservice.xmldao.xml配置@service和@Repository5.Mybatis3.0.5-Spring整合--orm.xmlDataSourceDataSource配置anid="dataSource"classclass="org.springframework.jdbc.datasource.DriverManagerDataSource">考<<propertyname="driverClassName"value="com.mysql.jdbc.Driver"/><<propertyname="url"value="jdbc:mysql://localhost:3306/mvc"/><<propertyname="username"value="root"/><<propertyname="password"value="root"/><</bean>注注册事务管理器(Mybatis将事务转交给Spring来管理)anid="transactionManager"classclass="org.springframework.jdbc.datasource.DataSourceTransactionManager"><<propertyname="dataSource"ref="dataSource"/><</bean>SqlSessionFactory配置(Mybatis核心是sqlSessionFactory来获取orm处理对象,dataSource,mapperLocations配置mybaits自动生成的xml文件.就是注入映射关系.)<<beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean"><<propertyname="dataSource"ref="dataSource"/><<propertyname="mapperLocations"value="classpath:/com/los/mvc/mapper/*.xml"/><</bean>MapperScannerMapperScanner配置.自动去搜索mapper里的对象,并注入.<<beanclass="org.mybatis.spring.mapper.MapperScannerConfigurer"><<propertyname="basePackage"value="com.los.mvc.dao"/><</bean><<tx:annotation-driven/>考6.mybatis自动生成器配置--generatorConfig.xmlsqlMapGeneratorsqlMapGeneratorsqlMpper.xml生成器javaClientGeneratorjavaClientGeneratorModelDao生成器javaModelGeneratorjavaModelGeneratorModel生成器comcom.los.util.MBG.java运行会自动生成mybatis代码.然后再配置orm.xml类类注解@@Controller@@RequestMapping("/json")为访问该层的路径.方法注方法注解@@RequestMapping(method=RequestMethod.GET)只有get方法才能访问.@@ResponseBody自动将返回的封装成json,方法返回值必须是map<String,?>类型.@@RequestMapping(value="/doLogin")value=”doLogin”为访问该方法的handlermappingreturnreturn"login/login";会通过ViewResolver找到对应的viewreturnreturn"redirect:/user/toRegister.html";为spring-mvc的重定向.@@InitBinder()为绑定器,可以为request传来的数据进行数据类型转换.数据自动验数据自动验证考方方法中参数需要有后面的两个(@ValidUseruser,BindingResultresult).@Valid的支持标准是JSR,HibernateValidate4是对该标准比较好的实现.需要在Model类中配置验证的注解.判断验证是否正确通过result.hasErrors()或者result.hasFieldErrors()来判断,通过result.getAllErrors()或Error.getDeafaultMessage(),这个是获取错误信息.具体的错误验证机制还地在Model类中配置.属属性注解@Autowired会为该属性自动注入bean,默认方式是byType.也可以用@Resource这个注解默认类类注解@@Service为@Component的子注解,分工更明细.@Transactional可以为该业务类声明一个全类的事务.也可以将事务写在方法上.根据不同的需要.方方法注解@@Transactional(readOnly=true)@@Transactional(readOnly=false,propagation=Propagation.REQUIRED,rollbackFor=Exception.class)类的事务声明,可以设置隔离级别和传播属性,以及要回滚的异常名或者异常类,不需要回滚的异常名或者异常类.异常通常抛出给controller层来处理属性注解属性注解@@Autowired@Resource考9.Repository层配置.(持久层DaoImpl)类类注解@@Repository为@Component的子注解,意为持久层,分工更明细.一般不在这层处理事务.类类注解@@Entry验验证注解,常用的有:@@NotEmpty@@NotNull@@Size(min=2,max=10,message=”xx必须在{min}和{max}之间”)@@Email@@DecimalMax@@AssertFalse@AssertTrue@@NullValid@@URL(protocol=,host=,port=,regexp=,flags=)一一般情况下属性或者方法可以放多个约束注解,hibernatevalidate会以随机的顺序去验证这些约束.所以多个注解约束会有可能同一个属性返回多个message.所以有时候需要只返回一条message,则需要使用验证组Groups来达成.组别序列可以把一系列的组别按照一定的顺序排列在一起，然后逐个验证，只要有一个组别验证失败，就不继续验证剩余的组别。@@GroupSequence({User.class,GroupB.class,GroupC.class})验证组的顺序,约束里不指定group考约束组放在类前,User.class为默认的约束组,GroupB,GroupC为空的接口.写在User外同个java文件下.@@NotEmpty(message="密码不能为空")@@Size(min=4,max=20,message="密码长度必须在{min}-{max}范围内",groups=GroupBGroupB.class)如如果@NotEmpty验证失败了,就不会继续验证@Size考最近做了个maven管理的springmvc+spring+mybatis，还用到了阿里巴巴的fastjson和druid连接池，配置文件如下pom.xml文件[html]viewplaincopy1.<?xmlversion="1.0"encoding="UTF-8"?>/POM/4.0.0"xmlns:xsi="://aLocationmavenapacheorgPOMmavenapache4.<modelVersion>4.0.0</modelVersion>5.<groupId>com.dahafo.demo</groupId>6.<name>um</name>7.<packaging>war</packaging>8.<version>1.0.0-BUILD-SNAPSHOT</version>9.<properties>10.<java-version>1.7</java-version>11.<org.springframework-version>3.2.3.RELEASE</org.springframework-vers12.<org.aspectj-version>1.6.10</org.aspectj-version>13.<org.slf4j-version>1.6.6</org.slf4j-version>14.</properties>15.<dependencies>16.<!--Spring-->17.<dependency>18.<groupId>org.springframework</groupId>19.<artifactId>spring-context</artifactId>20.<version>${org.springframework-version}</version>21.<exclusions>22.<!--ExcludeCommonsLogginginfavorofSLF4j-->23.<exclusion>24.<groupId>commons-logging</groupId>25.<artifactId>commons-logging</artifactId>26.</exclusion>27.</exclusions>28.</dependency>29.<dependency>30.<groupId>org.springframework</groupId>31.<artifactId>spring-webmvc</artifactId>32.<version>${org.springframework-version}</version>33.</dependency>34.<dependency>35.<groupId>org.springframework</groupId>36.<artifactId>spring-jdbc</artifactId>37.<version>${org.springframework-version}</version>38.</dependency>40.<!--AspectJ-->41.<dependency>42.<groupId>org.aspectj</groupId>43.<artifactId>aspectjrt</artifactId>44.<version>${org.aspectj-version}</version>45.</dependency>47.<!--Logging-->48.<dependency>49.<groupId>org.slf4j</groupId>50.<artifactId>slf4j-api</artifactId>51.<version>${org.slf4j-version}</version>52.</dependency>53.<dependency>54.<groupId>org.slf4j</groupId>55.<artifactId>jcl-over-slf4j</artifactId>56.<version>${org.slf4j-version}</version>57.<scope>runtime</scope>58.</dependency>59.<dependency>60.<groupId>org.slf4j</groupId>61.<artifactId>slf4j-log4j12</artifactId>62.<version>${org.slf4j-version}</version>63.<scope>runtime</scope>64.</dependency>65.<dependency>66.<groupId>log4j</groupId>67.<artifactId>log4j</artifactId>68.<version>1.2.15</version>69.<exclusions>70.<exclusion>71