spring_mvc注解实例

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1、本文主要介绍使用注解方式配置的spring mvc，包括数据访问层的实现web.xml配置：s3h3contextConfigLocationclasspath:applicationContext*.xmlorg.springframework.web.context.ContextLoaderListenerspringorg.springframework.web.servlet.DispatcherServlet1spring*.doindex.jspspring-servlet,主要配置controller的信息applicationContext.xml代码$dataSource.

2、dialect$dataSource.hbm2ddl.autoupdatecom.mvc.entityhibernate.properties数据库连接配置dataSource.password=123dataSource.username=rootdataSource.databaseName=testdataSource.driverClassName=com.mysql.jdbc.DriverdataSource.dialect=org.hibernate.dialect.MySQL5DialectdataSource.serverName=localhost:3306dataSourc

3、e.url=jdbc:mysql:/localhost:3306/testdataSource.properties=user=$dataSource.username;databaseName=$dataSource.databaseName;serverName=$dataSource.serverName;password=$dataSource.passworddataSource.hbm2ddl.auto=update配置已经完成，下面开始例子先在数据库建表，例子用的是mysql数据库CREATETABLEtest.student(idint(10)unsignedNOTNULLAU

4、TO_INCREMENT,namevarchar(45)NOTNULL,pswvarchar(45)NOTNULL,PRIMARYKEY(id)建好表后，生成实体类packagecom.mvc.entity;importjava.io.Serializable;importjavax.persistence.Basic;importjavax.persistence.Column;importjavax.persistence.Entity;importjavax.persistence.GeneratedValue;importjavax.persistence.GenerationType

5、;importjavax.persistence.Id;importjavax.persistence.Table;EntityTable(name=student)publicclassStudentimplementsSerializableprivatestaticfinallongserialVersionUID=1L;IdBasic(optional=false)GeneratedValue(strategy=GenerationType.IDENTITY)Column(name=id,nullable=false)privateIntegerid;Column(name=name)

6、privateStringuser;Column(name=psw)privateStringpsw;publicIntegergetId()returnid;publicvoidsetId(Integerid)this.id=id;publicStringgetUser()returnuser;publicvoidsetUser(Stringuser)this.user=user;publicStringgetPsw()returnpsw;publicvoidsetPsw(Stringpsw)this.psw=psw;Dao层实现packagecom.mvc.dao;importjava.u

7、til.List;publicinterfaceEntityDaopublicListcreateQuery(finalStringqueryString);publicObjectsave(finalObjectmodel);publicvoidupdate(finalObjectmodel);publicvoiddelete(finalObjectmodel);packagecom.mvc.dao;importjava.util.List;importorg.hibernate.Query;importorg.springframework.orm.hibernate3.Hibernate

8、Callback;importorg.springframework.orm.hibernate3.support.HibernateDaoSupport;publicclassEntityDaoImplextendsHibernateDaoSupportimplementsEntityDaopublicListcreateQuery(finalStringqueryString)return(List)getHibernateTemplate().execute(newHibernateCallback()publicObjectdoInHibernate(org.hibernate.Ses

9、sionsession)throwsorg.hibernate.HibernateExceptionQueryquery=session.createQuery(queryString);Listrows=query.list();returnrows;);publicObjectsave(finalObjectmodel)returngetHibernateTemplate().execute(newHibernateCallback()publicObjectdoInHibernate(org.hibernate.Sessionsession)throwsorg.hibernate.Hib

10、ernateExceptionsession.save(model);returnnull;);publicvoidupdate(finalObjectmodel)getHibernateTemplate().execute(newHibernateCallback()publicObjectdoInHibernate(org.hibernate.Sessionsession)throwsorg.hibernate.HibernateExceptionsession.update(model);returnnull;);publicvoiddelete(finalObjectmodel)get

11、HibernateTemplate().execute(newHibernateCallback()publicObjectdoInHibernate(org.hibernate.Sessionsession)throwsorg.hibernate.HibernateExceptionsession.delete(model);returnnull;);Dao在applicationContext.xml注入Dao只有一个类的实现，直接供其它service层调用，如果你想更换为其它的Dao实现，也只需修改这里的配置就行了。开始写view页面，WEB-INF/view下新建页面student.j

12、sp，WEB-INF/view这路径是在spring-servlet.xml文件配置的，你可以配置成其它，也可以多个路径。student.jsp代码添加scriptlanguage=javascriptsrc=/-tableborder-collapse:collapse;tdborder:1pxsolid#f00;!-functionadd()window.location.href=/student.do?method=add;functiondel(id)$.ajax(type:POST,url:/student.do?method=del&id=+id,dataType:json,su

13、ccess:function(data)if(data.del=true)alert(删除成功！);$(#+id).remove();elsealert(删除失败！);,error:function()alert(网络连接出错！););/-序号姓名密码操作trid=inputtype=buttononclick=del()value=删除/student_add.jsp学生添加!-functionturnback()window.location.href=/student.do;/-formmethod=postaction=/student.do?method=save姓名密码contro

14、ller类实现，只需把注解写上，spring就会自动帮你找到相应的bean，相应的注解标记意义，不明白的，可以自己查下Service，Controller，Entity等等的内容。packagecom.mvc.controller;importjava.util.List;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;importmons.logging.Log;importmons.logging.LogFactory;importorg.springframe

15、work.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Controller;importorg.springframework.ui.ModelMap;importorg.springframework.web.bind.annotation.RequestMapping;importorg.springframework.web.bind.annotation.RequestMethod;importorg.springframework.web.bind.annotation.Request

16、Param;importorg.springframework.web.servlet.ModelAndView;importcom.mvc.entity.Student;importcom.mvc.service.StudentService;ControllerRequestMapping(/student.do)publicclassStudentControllerprotectedfinaltransientLoglog=LogFactory.getLog(StudentController.class);AutowiredprivateStudentServicestudentSe

17、rvice;publicStudentController()RequestMappingpublicStringload(ModelMapmodelMap)Listlist=studentService.getStudentList();modelMap.put(list,list);returnstudent;RequestMapping(params=method=add)publicStringadd(HttpServletRequestrequest,ModelMapmodelMap)throwsExceptionreturnstudent_add;RequestMapping(pa

18、rams=method=save)publicStringsave(HttpServletRequestrequest,ModelMapmodelMap)Stringuser=request.getParameter(user);Stringpsw=request.getParameter(psw);Studentst=newStudent();st.setUser(user);st.setPsw(psw);trystudentService.save(st);modelMap.put(addstate,添加成功);catch(Exceptione)log.error(e.getMessage

19、();modelMap.put(addstate,添加失败);returnstudent_add;RequestMapping(params=method=del)publicvoiddel(RequestParam(id)Stringid,HttpServletResponseresponse)tryStudentst=newStudent();st.setId(Integer.valueOf(id);studentService.delete(st);response.getWriter().print(del:true);catch(Exceptione)log.error(e.getM

20、essage();e.printStackTrace();service类实现packagecom.mvc.service;importjava.util.List;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Service;importorg.springframework.transaction.annotation.Transactional;importcom.mvc.dao.EntityDao;importcom.mvc.entity

21、.Student;ServicepublicclassStudentServiceAutowiredprivateEntityDaoentityDao;TransactionalpublicListgetStudentList()StringBuffersff=newStringBuffer();sff.append(selectafrom).append(Student.class.getSimpleName().append(a);Listlist=entityDao.createQuery(sff.toString();returnlist;publicvoidsave(Studentst)entityDao.save(st);publicvoiddelete(Objectobj)entityDao.delete(obj);OK，例子写完。有其它业务内容，只需直接新建view，并实现相应comtroller和service就行了，配置和dao层的内容基本不变，也就是每次只需写jsp（view），controller和service调用dao就行了。