spring mvc 简单搭建

文中用的框架版本：spring 3,hibernate 3,没有的，自己上网下。

web.xml配置：

</load-on-startup>     </servlet>     <servlet-mapping>          <servlet-name>spring</servlet-name>  <!-- 这里在配成spring,下边也要写一个名为spring-servlet.xml的文件，主要用来配置它的controller -->        <url-pattern>*.do</url-pattern>     </servlet-mapping>       <welcome-file-list>       <welcome-file>index.jsp</welcome-file>     </welcome-file-list>   </web-app> 

spring-servlet,主要配置controller的信息

<?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:p="http://www.springframework.org/schema/p"             xmlns:context="http://www.springframework.org/schema/context"        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-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/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">          <context:annotation-config />          <!-- 把标记了@Controller注解的类转换为bean -->           <context:component-scan base-package="com.mvc.controller"/>       <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->           <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>                    <!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->            <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"               p:prefix="/WEB-INF/view/" p:suffix=".jsp"/>                       <bean id="multipartResolver"               class="org.springframework.web.multipart.commons.CommonsMultipartResolver"               p:defaultEncoding="utf-8"/>     </beans> 

applicationContext.xml代码

<?xml version="1.0" encoding="UTF-8"?>   <beans xmlns="http://www.springframework.org/schema/beans"  xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"  xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">     <context:annotation-config />   <context:component-scan base-package="com.mvc"/>  <!-- 自动扫描所有注解该路径 -->     <context:property-placeholder location="classpath:/hibernate.properties"/>     <bean id="sessionFactory"    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">     <property name="dataSource" ref="dataSource"/>     <property name="hibernateProperties">      <props>       <prop key="hibernate.dialect">${dataSource.dialect}</prop>       <prop key="hibernate.hbm2ddl.auto">${dataSource.hbm2ddl.auto}</prop>       <prop key="hibernate.hbm2ddl.auto">update</prop>      </props>     </property>     <property name="packagesToScan">      <list>       <value>com.mvc.entity</value><!-- 扫描实体类，也就是平时所说的model -->      </list>       </property>   </bean>     <bean id="transactionManager"    class="org.springframework.orm.hibernate3.HibernateTransactionManager">     <property name="sessionFactory" ref="sessionFactory"/>     <property name="dataSource" ref="dataSource"/>   </bean>     <bean id="dataSource"    class="org.springframework.jdbc.datasource.DriverManagerDataSource">     <property name="driverClassName" value="${dataSource.driverClassName}"/>     <property name="url" value="${dataSource.url}"/>     <property name="username" value="${dataSource.username}"/>     <property name="password" value="${dataSource.password}"/>   </bean>   <!-- Dao的实现 -->   <bean id="entityDao" class="com.mvc.dao.EntityDaoImpl">       <property name="sessionFactory" ref="sessionFactory"/>   </bean>   <tx:annotation-driven transaction-manager="transactionManager"/>   <tx:annotation-driven mode="aspectj"/>            <aop:aspectj-autoproxy/>     </beans> 

hibernate.properties数据库连接配置

dataSource.password=123  dataSource.username=root   dataSource.databaseName=test   dataSource.driverClassName=com.mysql.jdbc.Driver   dataSource.dialect=org.hibernate.dialect.MySQL5Dialect   dataSource.serverName=localhost:3306  dataSource.url=jdbc:mysql://localhost:3306/test   dataSource.properties=user=${dataSource.username};databaseName=${dataSource.databaseName};serverName=${dataSource.serverName};password=${dataSource.password}   dataSource.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

CREATE TABLE  `test`.`student` (     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,     `name` varchar(45) NOT NULL,     `psw` varchar(45) NOT NULL,     PRIMARY KEY (`id`)   ) 

建好表后，生成实体类

package com.mvc.entity;     import java.io.Serializable;     import javax.persistence.Basic;   import javax.persistence.Column;   import javax.persistence.Entity;   import javax.persistence.GeneratedValue;   import javax.persistence.GenerationType;   import javax.persistence.Id;   import javax.persistence.Table;     @Entity  @Table(name = "student")   public class Student implements Serializable {       private static final long serialVersionUID = 1L;       @Id      @Basic(optional = false)       @GeneratedValue(strategy = GenerationType.IDENTITY)       @Column(name = "id", nullable = false)       private Integer id;       @Column(name = "name")       private String user;       @Column(name = "psw")       private String psw;       public Integer getId() {           return id;       }       public void setId(Integer id) {           this.id = id;       }              public String getUser() {           return user;       }       public void setUser(String user) {           this.user = user;       }       public String getPsw() {           return psw;       }       public void setPsw(String psw) {           this.psw = psw;       }   } 

Dao层实现

package com.mvc.dao;     import java.util.List;     publicinterface EntityDao {       public List<Object> createQuery(final String queryString);       public Object save(final Object model);       publicvoid update(final Object model);       publicvoid delete(final Object model);   } 

package com.mvc.dao;     import java.util.List;     import org.hibernate.Query;   import org.springframework.orm.hibernate3.HibernateCallback;   import org.springframework.orm.hibernate3.support.HibernateDaoSupport;     publicclass EntityDaoImpl extends HibernateDaoSupport implements EntityDao{       public List<Object> createQuery(final String queryString) {           return (List<Object>) getHibernateTemplate().execute(                   new HibernateCallback<Object>() {                       public Object doInHibernate(org.hibernate.Session session)                               throws org.hibernate.HibernateException {                           Query query = session.createQuery(queryString);                           List<Object> rows = query.list();                           return rows;                       }                   });       }       public Object save(final Object model) {           return  getHibernateTemplate().execute(                   new HibernateCallback<Object>() {                       public Object doInHibernate(org.hibernate.Session session)                               throws org.hibernate.HibernateException {                           session.save(model);                           returnnull;                       }                   });       }       publicvoid update(final Object model) {           getHibernateTemplate().execute(new HibernateCallback<Object>() {               public Object doInHibernate(org.hibernate.Session session)                       throws org.hibernate.HibernateException {                   session.update(model);                   returnnull;               }           });       }       publicvoid delete(final Object model) {           getHibernateTemplate().execute(new HibernateCallback<Object>() {               public Object doInHibernate(org.hibernate.Session session)                       throws org.hibernate.HibernateException {                   session.delete(model);                   returnnull;               }           });       }   } 

Dao在applicationContext.xml注入

<bean id="entityDao" class="com.mvc.dao.EntityDaoImpl">    <property name="sessionFactory" ref="sessionFactory"/> </bean>

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.jsp，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

">table{  border-collapse:collapse;  }   td{  border:1px solid #f00;  }</style>  <script type="text/javascript"><!--   function add(){       window.location.href="<%=request.getContextPath() %>/student.do?method=add";   }     function del(id){   $.ajax( {       type : "POST",       url : "<%=request.getContextPath()%>/student.do?method=del&id="+ id,       dataType: "json",       success : function(data) {           if(data.del =="true"){               alert("删除成功！");               $("#"+ id).remove();           }           else{               alert("删除失败！");           }       },       error :function(){           alert("网络连接出错！");       }   });   }   // --></script>  </head>  <body>    <input id="add" type="button" onclick="add()" value="添加"/>  <table >      <tr>          <td>序号</td>          <td>姓名</td>          <td>密码</td>          <td>操作</td>      </tr>      <c:forEach items="${list}"var="student">      <tr id="<c:out value="${student.id}"/>">          <td><c:out value="${student.id}"/></td>          <td><c:out value="${student.user}"/></td>          <td><c:out value="${student.psw}"/></td>          <td>              <input type="button" value="编辑"/>                    <input type="button" onclick="del('<c:out value="${student.id}"/>')" value="删除"/>          </td>      </tr>      </c:forEach>         </table>  </body>  </html> 

student_add.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"      pageEncoding="UTF-8"%>  <%@ include file="/include/head.jsp"%>  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html>  <head>  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  <title>学生添加</title>  <mce:script type="text/javascript"><!--   function turnback(){       window.location.href="<%=request.getContextPath() %>/student.do";   }   // --></mce:script>  </head>  <body>  <form method="post" action="<%=request.getContextPath() %>/student.do?method=save">  <div><c:out value="${addstate}"></c:out></div>  <table>      <tr><td>姓名</td><td><input id="user" name="user" type="text"/></td></tr>      <tr><td>密码</td><td><input id="psw" name="psw"  type="text"/></td></tr>      <tr><td colSpan="2" align="center"><input type="submit" value="提交"/><input type="button" onclick="turnback()" value="返回"/></td></tr>  </table>    </form>  </body>  </html> 

controller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。

package com.mvc.controller;     import java.util.List;     import javax.servlet.http.HttpServletRequest;   import javax.servlet.http.HttpServletResponse;     import org.apache.commons.logging.Log;   import org.apache.commons.logging.LogFactory;   import org.springframework.beans.factory.annotation.Autowired;   import org.springframework.stereotype.Controller;   import org.springframework.ui.ModelMap;   import org.springframework.web.bind.annotation.RequestMapping;   import org.springframework.web.bind.annotation.RequestMethod;   import org.springframework.web.bind.annotation.RequestParam;   import org.springframework.web.servlet.ModelAndView;     import com.mvc.entity.Student;   import com.mvc.service.StudentService;     @Controller  @RequestMapping("/student.do")   publicclass StudentController {       protectedfinaltransient Log log = LogFactory       .getLog(StudentController.class);       @Autowired      private StudentService studentService;       public StudentController(){                  }              @RequestMapping      public String load(ModelMap modelMap){           List<Object> list = studentService.getStudentList();           modelMap.put("list", list);           return"student";       }              @RequestMapping(params ="method=add")       public String add(HttpServletRequest request, ModelMap modelMap) throws Exception{           return"student_add";       }              @RequestMapping(params ="method=save")       public String save(HttpServletRequest request, ModelMap modelMap){           String user = request.getParameter("user");           String psw = request.getParameter("psw");           Student st =new Student();           st.setUser(user);           st.setPsw(psw);           try{               studentService.save(st);               modelMap.put("addstate", "添加成功");           }           catch(Exception e){               log.error(e.getMessage());               modelMap.put("addstate", "添加失败");           }                      return"student_add";       }              @RequestMapping(params ="method=del")       publicvoid del(@RequestParam("id") String id, HttpServletResponse response){           try{               Student st =new Student();               st.setId(Integer.valueOf(id));               studentService.delete(st);               response.getWriter().print("{\"del\":\"true\"}");           }           catch(Exception e){               log.error(e.getMessage());               e.printStackTrace();           }       }   } 

service类实现

package com.mvc.service;     import java.util.List;     import org.springframework.beans.factory.annotation.Autowired;   import org.springframework.stereotype.Service;   import org.springframework.transaction.annotation.Transactional;     import com.mvc.dao.EntityDao;   import com.mvc.entity.Student;     @Service  publicclass StudentService {   @Autowired  private EntityDao entityDao;       @Transactional  public List<Object> getStudentList(){     StringBuffer sff =new StringBuffer();     sff.append("select a from ").append(Student.class.getSimpleName()).append(" a ");     List<Object> list = entityDao.createQuery(sff.toString());     return list;   }       publicvoid save(Student st){     entityDao.save(st);   }   publicvoid delete(Object obj){     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。