springmvc注解小示例(转)

转自：http://www.blogjava.net/pengo/archive/2010/11/28/339229.html

弃用了struts，用spring mvc框架做了几个项目，感觉都不错，而且使用了注解方式，可以省掉一大堆配置文件。本文主要介绍使用注解方式配置的spring mvc，之前写的spring3.0 mvc和rest小例子没有介绍到数据层的内容，现在这一篇补上。下面开始贴代码。

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

web.xml配置：

   
   
  s3h3   
        
     contextConfigLocation     
     classpath:applicationContext*.xml     
      
       
     class>org.springframework.web.context.ContextLoaderListenerclass>     
      
  
      
     spring     
     class>org.springframework.web.servlet.DispatcherServletclass>     
     1     
      
      
     spring     
     *. do     
      
     
    index.jsp   
     
  

 

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  />   
             
       < context:component-scan  base-package ="com.mvc.controller"   />     
        
       < bean  class ="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"   />     
        
             
        < 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"   />      
  
  < 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 >    
    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 >   
     
  < 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;   
  
public  interface EntityDao  {   
    public List