SSH下使用Spring注解自动注入bean

Spring注解的使用方法详见：http://www.ibm.com/developerworks/cn/java/j-lo-spring25-ioc/，这里在SSH框架下做一个例子。

首先导入相关包：spring-beans-3.0.4.RELEASE.jar（org.springframework.beans.factory.annotation.Autowired用来注入bean）、spring-context-3.0.4.RELEASE.jar（org.springframework.stereotype.Componet 、Service、Repository等用来定义bean）。

其次需要添加相关配置：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:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
     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/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

     <description>Spring公共配置 description>


     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
         <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
         <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:cui"/>
         <property name="username" value="cui"/>
         <property name="password" value="cui"/>
     bean>


     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
         <property name="dataSource" ref="dataSource"/>
         <property name="hibernateProperties">
             <props>
                 <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialectprop>
                 <prop key="hibernate.show_sql">trueprop>
             props>
         property>
         <property name="packagesToScan">
             <list>
                 <value>com.entityvalue>
             list>
         property>
     bean>


     <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
         <property name="sessionFactory" ref="sessionFactory">property>
     bean>


     <context:component-scan base-package="com">
         <context:include-filter type="regex" expression="com/.dao.*"/>
                    org.hibernate.dialect.Oracle10gDialect true     com.entity               
    
  web.xml 
    
  "1.0" encoding="UTF-8"?>
 "WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    mytest


        contextConfigLocation
        classpath*:/applicationContext.xml




        struts2
         class>org.apache.struts2.dispatcher.FilterDispatcherclass>

            actionPackages
            com.action




        struts2
        /*




         class>org.springframework.web.context.ContextLoaderListenerclass>

 
    mytest   contextConfigLocation classpath*:/applicationContext.xml    struts2 org.apache.struts2.dispatcher.FilterDispatcher  actionPackages com.action    struts2 /*    org.springframework.web.context.ContextLoaderListener   
    
  使用Hibernate JPA定义User类： 
    
  package com.entity;

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 = "s_user")
 public class User {

     private Long id;
     private String username;
     private String password;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
     public Long getId() {
         return id;
    }

     public void setId(Long id) {
         this.id = id;
    }

     @Column(name = "name")
     public String getUsername() {
         return username;
    }

     public void setUsername(String username) {
         this.username = username;
    }

     @Column(name = "pwd")
     public String getPassword() {
         return password;
    }

     public void setPassword(String password) {
         this.password = password;
    }

} 
  package com.entity; 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 = "s_user") public class User { private Long id; private String username; private String password; @Id @GeneratedValue(strategy = GenerationType.AUTO) public Long getId() { return id; } public void setId(Long id) { this.id = id; } @Column(name = "name") public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } @Column(name = "pwd") public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } 
    
  Dao层： 
    
  package com.dao;

import com.entity.User;

 public interface UserDao {
     public void save(User user);
}


package com.dao.Impl;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.stereotype.Repository;

import com.dao.UserDao;
import com.entity.User;

 @Repository("userDao")
 public class UserDaoImpl implements UserDao {

     private HibernateTemplate template;
     private Log log = LogFactory.getLog(UserDaoImpl.class);

     //使用构造子注入自动注入sessionFactory
    @Autowired
     public UserDaoImpl(SessionFactory sessionFactory) {
         this.template = new HibernateTemplate(sessionFactory);
    }

     public void save(User user) {
        template.save(user);
         log.debug("save user:" + user.getUsername());
    }
} 
  package com.dao; import com.entity.User; public interface UserDao { public void save(User user); } package com.dao.Impl; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.orm.hibernate3.HibernateTemplate; import org.springframework.stereotype.Repository; import com.dao.UserDao; import com.entity.User; @Repository("userDao") public class UserDaoImpl implements UserDao { private HibernateTemplate template; private Log log = LogFactory.getLog(UserDaoImpl.class); //使用构造子注入自动注入sessionFactory @Autowired public UserDaoImpl(SessionFactory sessionFactory) { this.template = new HibernateTemplate(sessionFactory); } public void save(User user) { template.save(user); log.debug("save user:" + user.getUsername()); } } 
    
  Service层： 
    
  package com.service;
 import com.entity.User;

 public interface UserManager {
     public void add(User user);
}


 package com.service.Impl;

 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;

 import com.dao.UserDao;
 import com.entity.User;
 import com.service.UserManager;

 @Service("userManager")
 public class UserManagerImpl implements UserManager {

     //自动注入userDao，也可以使用@Resource
     @Autowired
     private UserDao userDao;
     private Log log = LogFactory.getLog(UserManagerImpl.class);

     public void add(User user) {
        userDao.save(user);
         log.debug("add User:" + user.getUsername());
    }
} 
  package com.service; import com.entity.User; public interface UserManager { public void add(User user); } package com.service.Impl; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.dao.UserDao; import com.entity.User; import com.service.UserManager; @Service("userManager") public class UserManagerImpl implements UserManager { //自动注入userDao，也可以使用@Resource @Autowired private UserDao userDao; private Log log = LogFactory.getLog(UserManagerImpl.class); public void add(User user) { userDao.save(user); log.debug("add User:" + user.getUsername()); } } 
    
  Action： 
    
  package com.action.convention;

 import org.apache.struts2.convention.annotation.Result;
 import org.springframework.beans.factory.annotation.Autowired;

 import com.entity.User;
 import com.opensymphony.xwork2.ActionSupport;
 import com.service.UserManager;

 @Result(name = "success", location = "hello.jsp")
 public class UserAction extends ActionSupport {

     private static final long serialVersionUID = 1L;

     @Autowired
     private UserManager userManager;

     public String execute() {
         User user = new User();
         user.setUsername("cuihaiyang");
         user.setPassword("abcd");

        userManager.add(user);

         return SUCCESS;
    }
} 
  package com.action.convention; import org.apache.struts2.convention.annotation.Result; import org.springframework.beans.factory.annotation.Autowired; import com.entity.User; import com.opensymphony.xwork2.ActionSupport; import com.service.UserManager; @Result(name = "success", location = "hello.jsp") public class UserAction extends ActionSupport { private static final long serialVersionUID = 1L; @Autowired private UserManager userManager; public String execute() { User user = new User(); user.setUsername("cuihaiyang"); user.setPassword("abcd"); userManager.add(user); return SUCCESS; } } 
    
  调试信息如下： 
  Hibernate: select hibernate_sequence.nextval from dualHibernate: insert into s_user (pwd, name, id) values (?, ?, ?)2011-03-10 19:44:25,296 [http-8080-1] DEBUG [com.dao.Impl.UserDaoImpl] - save user:cuihaiyang2011-03-10 19:44:25,296 [http-8080-1] DEBUG [com.service.Impl.UserManagerImpl] - add User:cuihaiyang 
    
  转自http://blog.csdn.net/cuihaiyang/article/details/6238257#