Struts2CRUD实例
一、在这个实例中
可以看到如何进行CREATE、READ、UPDATE、DELETE操作(CRUD)。
页面效果如下图:
包目录结构如下:
二、代码说明
1、Model类User.java
package com.test.model;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.validator.NotEmpty;
@javax.persistence.Entity
@Table(name="user3")//用注释,hibernate通过反向生成表
public class User {
private int id;
private String name;
private String gender;
private String country;
private String aboutYou;
private Boolean mailingList;
@Id
@GeneratedValue
@Column(name="id")
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@NotEmpty
@Column(name="name",length=50,nullable=false)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@NotEmpty
@Column(name="gender")
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
@NotEmpty
@Column(name="country")
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
@Column(name="aboutYou",length=100,nullable=false)
public String getAboutYou() {
return aboutYou;
}
public void setAboutYou(String aboutYou) {
this.aboutYou = aboutYou;
}
@Column(name="mailList")
public Boolean getMailingList() {
return mailingList;
}
public void setMailingList(Boolean mailingList) {
this.mailingList = mailingList;
}
}
2、hibernate.cfg.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="connection.password">123456</property>
<property name="connection.pool_size">1</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">none</property>
<property name="hibernate.current_session_context_class">jta</property >
<property name="hibernate.current_session_context_class">thread</property>
<mapping class="com.test.model.User" />//使用的是java类,而不是hbm.xml,前面Model类使用了注释
</session-factory>
</hibernate-configuration>
3、到DaoImpl代码如下
package com.test.dao;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.googlecode.s2hibernate.struts2.plugin.annotations.SessionTarget;
import com.googlecode.s2hibernate.struts2.plugin.annotations.TransactionTarget;
import com.test.model.User;
public class UserDaoImpl implements UserDao {
/*这里通过注释,取得Session,和Transaction,参见Full Hibernate Plug-in 1.4 GA
这里你可以通过创建一个HibernateUtil类来获取SessionFactory。
*/
@SessionTarget
private Session session;
@TransactionTarget
private Transaction transaction;
public void deleteById(int id) {
try{
User user=(User) session.get(User.class, id);
session.delete(user);
}catch (Exception e) {
}
}
public User findById(int id) {
try{
User user=(User) session.get(User.class, id);
return user;
}catch (Exception e) {
e.printStackTrace();
return null;
}
}
public List<User> listUsers() {
List<User> users=null;
try{
users=session.createQuery("from User").list();
}catch (Exception e) {
e.printStackTrace();
}
return users;
}
public void saveUser(User user) {
try {
session.saveOrUpdate(user);
} catch (Exception e) {
transaction.rollback();
e.printStackTrace();
}
}
}
1、获取SessionFactory的另外的HibernateUtil类
package com.test.util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUitl {
private static SessionFactory sessionFactory;
static {
try {
sessionFactory = new Configuration().configure()
.buildSessionFactory();
} catch (Exception e) {
e.printStackTrace();
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}
3、Action类,UserAction类
在UserAction中通ActionContext.getContext().get(ServletActionContext. HTTP_REQUEST)获取HttpServletRequest对象。
package com.test.action;
import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.test.dao.UserDaoImpl;
import com.test.model.User;
public class UserAction extends ActionSupport implements ModelDriven<User> {
private User user = new User();
private List<User> users = new ArrayList<User>();
private UserDaoImpl userDaoImpl = new UserDaoImpl();
public User getModel() {
return user;
}
public String add() {
userDaoImpl.saveUser(user);
return SUCCESS;
}
public String list() {
users = userDaoImpl.listUsers();
return SUCCESS;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public List<User> getUsers() {
return users;
}
public void setUsers(List<User> users) {
this.users = users;
}
}
4、Struts.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="hibernate-default">
<action name="saveOrUpdate" method="saveOrUpdate" class="com.test.action.UserAction">
<result name="success" type="redirect">listUser</result>
</action>
<action name="editUser" method="edit" class="com.test.action.UserAction">
<result name="success">/register.jsp</result>
</action>
<action name="deleteUser" method="delete" class="com.test.action.UserAction">
<result type="redirect" name="success">listUser</result>
</action>
<action name="listUser" method="list" class="com.test.action.UserAction">
<interceptor-ref name="basicStackHibernate" />
<result name="success">/register.jsp</result>
</action>
</package>
</struts>
5、web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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">
<filter>
<filter-name>struts</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
6、页面register.jsp
这里页面代码就不贴出来了
综上就是一个完整的Struts2与Hibernate3.0的整合CRUDE实例。并附代码lib包下载。给大家推荐一个很好的Struts1、2。hibernate,Spring实例网站。http://www.vaannila.com/