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

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1. <?xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3. xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
4. xmlns:context="http://www.springframework.org/schema/context"
5. 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">
6.  
7. <description>Spring公共配置 </description>
8.  
9. <!-- 配置数据源 -->
10. <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
11. <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
12. <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:cui"/>
13. <property name="username" value="cui"/>
14. <property name="password" value="cui"/>
15. </bean>
16.  
17. <!-- 配置sessionFactory -->
18. <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
19. <property name="dataSource" ref="dataSource"/>
20. <property name="hibernateProperties">
21. <props>
22. <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
23. <prop key="hibernate.show_sql">true</prop>
24. </props>
25. </property>
26. <property name="packagesToScan">
27. <list>
28. <value>com.entity</value>
29. </list>
30. </property>
31. </bean>
32.  
33. <!-- 事务管理 -->
34. <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
35. <property name="sessionFactory" ref="sessionFactory"></property>
36. </bean>
37.  
38. <!-- 使用annotation自动注入bean,并启动相关处理注解的进程 -->
39. <context:component-scan base-package="com">
40. <context:include-filter type="regex" expression="com/.dao.*"/>
41. <!-- 正则表达式必须格式正确，否则无效。以下是无效的示例
42. <context:exclude-filter type="regex" expression="/.service/..*"/>
43. <context:exclude-filter type="regex" expression="com/.service*"/>
44. <context:exclude-filter type="regex" expression=".service*"/>
45. -->
46. <!-- 正确格式:从base-package开始
47. <context:exclude-filter type="regex" expression="com/.service.*"/>
48. <context:exclude-filter type="regex" expression="com/.service/..*"/>
49. -->
50. </context:component-scan>
51.  
52. </beans>

<?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> <!-- 配置数据源 --> <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> <!-- 配置sessionFactory --> <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.Oracle10gDialect</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> <property name="packagesToScan"> <list> <value>com.entity</value> </list> </property> </bean> <!-- 事务管理 --> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- 使用annotation自动注入bean,并启动相关处理注解的进程 --> <context:component-scan base-package="com"> <context:include-filter type="regex" expression="com/.dao.*"/> <!-- 正则表达式必须格式正确，否则无效。以下是无效的示例 <context:exclude-filter type="regex" expression="/.service/..*"/> <context:exclude-filter type="regex" expression="com/.service*"/> <context:exclude-filter type="regex" expression=".service*"/> --> <!-- 正确格式:从base-package开始 <context:exclude-filter type="regex" expression="com/.service.*"/> <context:exclude-filter type="regex" expression="com/.service/..*"/> --> </context:component-scan> </beans>

web.xml

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1. <?xml version="1.0" encoding="UTF-8"?>
2. <web-app id="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">
3. <display-name>mytest</display-name>
4. <!-- 指定spring配置文件的位置 -->
5. <context-param>
6. <param-name>contextConfigLocation</param-name>
7. <param-value>classpath*:/applicationContext.xml</param-value>
8. </context-param>
9.  
10. <!-- Struts 2 -->
11. <filter>
12. <filter-name>struts2</filter-name>
13. <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
14. <init-param>
15. <param-name>actionPackages</param-name>
16. <param-value>com.action</param-value>
17. </init-param>
18. </filter>
19.  
20. <filter-mapping>
21. <filter-name>struts2</filter-name>
22. <url-pattern>/*</url-pattern>
23. </filter-mapping>
24.  
25. <!-- 自动加载applicationContext -->
26. <listener>
27. <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
28. </listener>
29. </web-app>

<?xml version="1.0" encoding="UTF-8"?> <web-app id="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"> <display-name>mytest</display-name> <!-- 指定spring配置文件的位置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:/applicationContext.xml</param-value> </context-param> <!-- Struts 2 --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> <init-param> <param-name>actionPackages</param-name> <param-value>com.action</param-value> </init-param> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 自动加载applicationContext --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>

使用Hibernate JPA定义User类：

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1. package com.entity;
2.  
3. import javax.persistence.Column;
4. import javax.persistence.Entity;
5. import javax.persistence.GeneratedValue;
6. import javax.persistence.GenerationType;
7. import javax.persistence.Id;
8. import javax.persistence.Table;
9.  
10. @Entity
11. @Table(name = "s_user")
12. public class User {
13.  
14. private Long id;
15. private String username;
16. private String password;
17.  
18. @Id
19. @GeneratedValue(strategy = GenerationType.AUTO)
20. public Long getId() {
21. return id;
22. }
23.  
24. public void setId(Long id) {
25. this.id = id;
26. }
27.  
28. @Column(name = "name")
29. public String getUsername() {
30. return username;
31. }
32.  
33. public void setUsername(String username) {
34. this.username = username;
35. }
36.  
37. @Column(name = "pwd")
38. public String getPassword() {
39. return password;
40. }
41.  
42. public void setPassword(String password) {
43. this.password = password;
44. }
45.  
46. }

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：

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1. package com.dao;
2.  
3. import com.entity.User;
4.  
5. public interface UserDao {
6. public void save(User user);
7. }
8.  
9.  
10. package com.dao.Impl;
11.  
12. import org.apache.commons.logging.Log;
13. import org.apache.commons.logging.LogFactory;
14. import org.hibernate.SessionFactory;
15. import org.springframework.beans.factory.annotation.Autowired;
16. import org.springframework.orm.hibernate3.HibernateTemplate;
17. import org.springframework.stereotype.Repository;
18.  
19. import com.dao.UserDao;
20. import com.entity.User;
21.  
22. @Repository("userDao")
23. public class UserDaoImpl implements UserDao {
24.  
25. private HibernateTemplate template;
26. private Log log = LogFactory.getLog(UserDaoImpl.class);
27.  
28. //使用构造子注入自动注入sessionFactory
29. @Autowired
30. public UserDaoImpl(SessionFactory sessionFactory) {
31. this.template = new HibernateTemplate(sessionFactory);
32. }
33.  
34. public void save(User user) {
35. template.save(user);
36. log.debug("save user:" + user.getUsername());
37. }
38. }

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：

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1. package com.service;
2. import com.entity.User;
3.  
4. public interface UserManager {
5. public void add(User user);
6. }
7.  
8.  
9. package com.service.Impl;
10.  
11. import org.apache.commons.logging.Log;
12. import org.apache.commons.logging.LogFactory;
13. import org.springframework.beans.factory.annotation.Autowired;
14. import org.springframework.stereotype.Service;
15.  
16. import com.dao.UserDao;
17. import com.entity.User;
18. import com.service.UserManager;
19.  
20. @Service("userManager")
21. public class UserManagerImpl implements UserManager {
22.  
23. //自动注入userDao，也可以使用@Resource
24. @Autowired
25. private UserDao userDao;
26. private Log log = LogFactory.getLog(UserManagerImpl.class);
27.  
28. public void add(User user) {
29. userDao.save(user);
30. log.debug("add User:" + user.getUsername());
31. }
32. }

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：

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1. package com.action.convention;
2.  
3. import org.apache.struts2.convention.annotation.Result;
4. import org.springframework.beans.factory.annotation.Autowired;
5.  
6. import com.entity.User;
7. import com.opensymphony.xwork2.ActionSupport;
8. import com.service.UserManager;
9.  
10. @Result(name = "success", location = "hello.jsp")
11. public class UserAction extends ActionSupport {
12.  
13. private static final long serialVersionUID = 1L;
14.  
15. @Autowired
16. private UserManager userManager;
17.  
18. public String execute() {
19. User user = new User();
20. user.setUsername("cuihaiyang");
21. user.setPassword("abcd");
22.  
23. userManager.add(user);
24.  
25. return SUCCESS;
26. }
27. }

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 dual
Hibernate: 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:cuihaiyang
2011-03-10 19:44:25,296 [http-8080-1] DEBUG [com.service.Impl.UserManagerImpl] - add User:cuihaiyang