原文 基于IDEA 最新Spirng3.2+hibernate4+struts2.3 全注解配置 登录

首先说说 IDEA 12，由于myeclipse越来越卡，我改用idea12 了，发现其功能强悍到eclipse无法比拟，此款ide理解上下文是一等一的，不用什么jquery插件，extjs插件，都可以实现全智能的代码提示。速度什么的都比myeclipse快。而且IDEA提供了android支持struts spring hibernate 支持。下面，我讲教大家完成一个基于全注解的Spirng3.2+hibernate4+struts2.3 登录项目，本人对Java极其热爱，爱好Java编程的朋友可以加QQ群:185441009

第一步 创建工程：

图中的project name 就是eclipse里的workspace，下面有个额module name，这个module 才是真正的项目，如果你不改名字，它会自动创建一个跟project name一样的工程。

点 next

选择相应的框架，包括application server tomcat，这里要说明的是，选择的时候它会提示是否下载所依赖的jar

记住要选中上图中Level为为global 意思就是这个lib是Userlibary,同理，spring hibernate 亦是如此。

完了之后 finish，项目就创建完毕了。

第二步，配置lib

ide下载的jar并不是完美的，有些冲突，有些少包多包。项目上右键，选择打开project Structure 选择global library，这里可以配置lib。

经过修整，最终导入的包如下。

第三步 搭建ssh框架

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

<listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

<filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        <init-param>
            <param-name>struts.ui.theme</param-name>
            <param-value>simple</param-value>
        </init-param>
        <init-param>
            <param-name>struts.objectFactory</param-name>
            <param-value>spring</param-value>
        </init-param>
        <init-param>
            <param-name>struts.convention.action.packages</param-name> //这是注解加载action类的时候用的
            <param-value>com.blog.actions</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

第二步 配置数据源

点击ide右边的database

然后右击 add 按照步骤一步一步添加数据源 完成之后如图所示

之后选中IDE侧面的 persistence 选中hibernate.cfg.xml 右击

选择 genernate mapping,按照步骤生成带注解的pojo类。

创建相应的配置文件 和 java 类 工程结构如图所示 struts无需配置。

hibernate 配置文件：

<?xml version='1.0' encoding='utf-8'?> 
<!DOCTYPE hibernate-configuration PUBLIC 
        "-//Hibernate/Hibernate Configuration DTD//EN" 
        " http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
    <session-factory> 
        <property name="connection.url">jdbc:mysql://localhost:3306/blog</property> 
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property> 
        <property name="connection.username">root</property> 
        <property name="connection.password">123456</property> 
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
        <property name="hibernate.c3p0.min_size">5</property> 
        <property name="hibernate.c3p0.max_size">20</property> 
        <property name="hibernate.c3p0.timeout">1800</property> 
        <property name="hibernate.c3p0.max_statements">50</property> 
        <mapping class="com.blog.entity.AppInitEntity"/> 
        <mapping class="com.blog.entity.ArticleEntity"/> 
        <mapping class="com.blog.entity.CommentEntity"/> 
        <mapping class="com.blog.entity.UserEntity"/> 
        <!-- DB schema will be updated if needed --> 
        <!-- <property name="hbm2ddl.auto">update</property> --> 
    </session-factory> 
</hibernate-configuration>

spring 配置文件

<?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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<context:component-scan base-package="com.blog">
    </context:component-scan>

<bean id="sessionFactory"
          class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
    </bean>

</beans>

loginAction

package com.blog.actions;

import com.blog.dao.UserDao;
import com.blog.entity.UserEntity;
import com.blog.service.UserService;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;

import javax.annotation.Resource;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午12:31
 * To change this template use File | Settings | File Templates.
 */
@Controller
@Namespace("/")
@Action("login")
@Results({@Result(name = "success", location = "/welcome.jsp"), @Result(name = "error", location = "/index.jsp")})

public class LoginAction extends ActionSupport {

public String getUserName() {
        return userName;
    }

public void setUserName(String userName) {
        this.userName = userName;
    }

public String getPwd() {
        return pwd;
    }

public void setPwd(String pwd) {
        this.pwd = pwd;
    }

private String userName;
    private String pwd;

public String getMessage() {
        return message;
    }

public void setMessage(String message) {
        this.message = message;
    }

private String message;

@Resource
    UserService userService;

public void check() {

Integer id = 1;
        UserEntity userEntity = userService.findById(id);
        System.out.println(userEntity.getUserName());

}
}

UserDao

package com.blog.dao;

import com.blog.entity.UserEntity;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午8:46
 * To change this template use File | Settings | File Templates.
 */
public interface UserDao {

public UserEntity findById(Object id);
}

UserDaoImpl

package com.blog.daoimpl;

import com.blog.dao.UserDao;
import com.blog.entity.UserEntity;
import org.hibernate.Session;
import org.springframework.dao.DataAccessException;
import org.springframework.stereotype.Repository;

import java.io.Serializable;
import java.util.logging.Logger;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午8:52
 * To change this template use File | Settings | File Templates.
 */
@Repository
public class UserDaoImpl extends SuperDao implements UserDao {

static Logger logger = Logger.getLogger(UserDaoImpl.class.toString());

@Override
    public UserEntity findById(Object id) {
        UserEntity userEntity = null;
        try {
            Session session=sessionFactory.openSession();
            userEntity = (UserEntity) session.load(UserEntity.class, (Serializable) id);
            logger.info("id:" + id);
        } catch (DataAccessException e) {
            logger.info(e.toString());
        }
        return userEntity;
    }

超类 SuperDao

package com.blog.daoimpl;

import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午8:49
 * To change this template use File | Settings | File Templates.
 */
@Component
public class SuperDao {
    @Resource
    SessionFactory sessionFactory;

}

 UserEntity 实体类

package com.blog.entity;

import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import java.sql.Timestamp;
import java.util.Collection;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午2:05
 * To change this template use File | Settings | File Templates.
 */
@javax.persistence.Table(name = "user", schema = "", catalog = "blog")
@Entity 
public class UserEntity {
    private int userId;

@javax.persistence.Column(name = "user_id", nullable = false, insertable = true, updatable = true, length = 10, precision = 0)
    @Id
    public int getUserId() {
        return userId;
    }

public void setUserId(int userId) {
        this.userId = userId;
    }

private String userName;

@javax.persistence.Column(name = "user_name", nullable = false, insertable = true, updatable = true, length = 50, precision = 0)
    @Basic 
    public String getUserName() {
        return userName;
    }

public void setUserName(String userName) {
        this.userName = userName;
    }

private String pwd;

@javax.persistence.Column(name = "pwd", nullable = false, insertable = true, updatable = true, length = 50, precision = 0)
    @Basic 
    public String getPwd() {
        return pwd;
    }

public void setPwd(String pwd) {
        this.pwd = pwd;
    }

private String email;

@javax.persistence.Column(name = "email", nullable = false, insertable = true, updatable = true, length = 50, precision = 0)
    @Basic 
    public String getEmail() {
        return email;
    }

public void setEmail(String email) {
        this.email = email;
    }

private Timestamp regTime;

@javax.persistence.Column(name = "reg_time", nullable = false, insertable = true, updatable = true, length = 19, precision = 0)
    @Basic 
    public Timestamp getRegTime() {
        return regTime;
    }

public void setRegTime(Timestamp regTime) {
        this.regTime = regTime;
    }

@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

UserEntity that = (UserEntity) o;

if (userId != that.userId) return false;
        if (email != null ? !email.equals(that.email) : that.email != null) return false;
        if (pwd != null ? !pwd.equals(that.pwd) : that.pwd != null) return false;
        if (regTime != null ? !regTime.equals(that.regTime) : that.regTime != null) return false;
        if (userName != null ? !userName.equals(that.userName) : that.userName != null) return false;

return true;
    }

@Override
    public int hashCode() {
        int result = userId;
        result = 31 * result + (userName != null ? userName.hashCode() : 0);
        result = 31 * result + (pwd != null ? pwd.hashCode() : 0);
        result = 31 * result + (email != null ? email.hashCode() : 0);
        result = 31 * result + (regTime != null ? regTime.hashCode() : 0);
        return result;
    }

private Collection<ArticleEntity> articlesByUserId;

@OneToMany(mappedBy = "userByUserId")
    public Collection<ArticleEntity> getArticlesByUserId() {
        return articlesByUserId;
    }

public void setArticlesByUserId(Collection<ArticleEntity> articlesByUserId) {
        this.articlesByUserId = articlesByUserId;
    }
}

 UserService

package com.blog.service;

import com.blog.entity.UserEntity;

import java.security.PrivateKey;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午8:43
 * To change this template use File | Settings | File Templates.
 */
public interface UserService {

public UserEntity findById(Object id);

}

UserServiceImpl

package com.blog.serviceimpl;

import com.blog.dao.UserDao;
import com.blog.daoimpl.UserDaoImpl;
import com.blog.entity.UserEntity;
import com.blog.service.UserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * Created with IntelliJ IDEA.
 * User: Juyan
 * Date: 12-12-15
 * Time: 下午8:47
 * To change this template use File | Settings | File Templates.
 */
@Service 
public class UserServiceImpl implements UserService {

@Resource
    UserDao userDao;

@Override
    public UserEntity findById(Object id) {
        return userDao.findById(id);
    }
}

index.jsp

<%@ taglib prefix="s" uri="/struts-tags" %> 
<%-- 
  Created by IntelliJ IDEA. 
  User: Juyan 
  Date: 12-12-15 
  Time: 下午12:14 
  To change this template use File | Settings | File Templates. 
--%> 
<%@ page contentType="text/html;charset=UTF-8" language="java" %> 
<html> 
  <head> 
    <title>Login</title> 
  </head> 
  <body> 
              <s:form action="login" namespace="/"  method="POST"> 
                  用户名：<s:textfield name="userName"  /> 
                  密码：<s:password name="pwd"/> 
                                  <s:submit name="登录" method="check"/> 
              </s:form> 
              <s:property value="message"/> 
  </body> 
</html>

配置完毕后，点击上面的tomcat毛旁边的运行按钮。说是登陆，其实我只查询了对象。数据库是mysql，自己创建吧。user表里面有个id字段。道理是一样的。

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