Ajax+Struts2+Spring+Hibernate整合

首先，建一个web project,然后添加对hibernate和spring的支持，我们使用的是hibernate3.2和spring2.0,然后导入xwork-2.0.3.jar struts2-core-2.0.8.jar struts2-spring-plugin-2.0.8.jar ognl-2.6.11.jar freemarker-2.3.8.jar commons-logging-api-1.1.jar和commons-pool-1.3.jar(不知道myeclipse怎么搞的，添加Spring功能支持的时候就有了commons-dbcp.jar，居然没有其依赖的commons-pool-x.jar，只好单独添加了，另外，需要将Spring2.0 AOP Liberaries里的asm2.2.3.jar删除，因为好像和Hiberate中的生成代理用的asm.jar冲突，我把Spring2.0 AOP Liberaries排到最后仍然有冲突，所以只好删掉了，不知道大家遇到过这种情况么)。 我们使用myeclise自带的Derby数据库，在里面建一个表BOOK： ID bigint primary key,autoincrement NAME varchar(20) ISBM varchar(20) AUTHOR varchar(15)

然后利用myeclipse的hibernate反向工程生成领域模型：Book.java, DAO:BookDAO.jar, Book 的映射文件Book.hbm.xml： 生成的代码及配置文件如下:

Book.java:

package edu.jlu.fuliang.domain;

/** *//**

* Book generated by MyEclipse Persistence Tools */

public class Book implements java.io.Serializable {

// Fields

private long id;

private String name; private String isbm; private String author;

// Constructors

/** *//** default constructor */ public Book() { }

/** *//** minimal constructor */

public Book(String name, String isbm) {

this.name = name; this.isbm = isbm; }

/** *//** full constructor */

public Book(String name, String isbm, String author) { this.name = name; this.isbm = isbm; this.author = author; }

// Property accessors

public long getId() { return this.id; }

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

public String getName() { return this.name; }

public void setName(String name) { this.name = name; }

public String getIsbm() { return this.isbm; }

public void setIsbm(String isbm) { this.isbm = isbm; }

public String getAuthor() { return this.author; }

public void setAuthor(String author) { this.author = author; }

}

BookDAO.java:

package edu.jlu.fuliang.dao;

import java.util.List;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory; import org.hibernate.LockMode;

import org.springframework.context.ApplicationContext;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import edu.jlu.fuliang.domain.Book;

/** *//**

* Data access object (DAO) for domain model class Book. *

* @see edu.jlu.fuliang.domain.Book * @author MyEclipse Persistence Tools */

public class BookDAO extends HibernateDaoSupport ...{

private static final Log log = LogFactory.getLog(BookDAO.class); // property constants

public static final String NAME = \"name\"; public static final String ISBM = \"isbm\";

public static final String AUTHOR = \"author\";

protected void initDao() ...{ // do nothing }

public void save(Book transientInstance) ...{ log.debug(\"saving Book instance\"); try ...{

getHibernateTemplate().save(transientInstance); log.debug(\"save successful\"); } catch (RuntimeException re) ...{ log.error(\"save failed\ throw re; } }

public void delete(Book persistentInstance) ...{ log.debug(\"deleting Book instance\"); try ...{

getHibernateTemplate().delete(persistentInstance); log.debug(\"delete successful\"); } catch (RuntimeException re) ...{ log.error(\"delete failed\ throw re; } }

public Book findById(Long id) ...{

log.debug(\"getting Book instance with id: \" + id); try ...{

Book instance = (Book) getHibernateTemplate().get( \"edu.jlu.fuliang.domain.Book\ return instance;

} catch (RuntimeException re) ...{ log.error(\"get failed\ throw re; } }

public List findByExample(Book instance) ...{

log.debug(\"finding Book instance by example\"); try ...{

List results = getHibernateTemplate().findByExample(instance); log.debug(\"find by example successful, result size: \" + results.size()); return results;

} catch (RuntimeException re) ...{

log.error(\"find by example failed\ throw re; } }

public List findByProperty(String propertyName, Object value) ...{

log.debug(\"finding Book instance with property: \" + propertyName + \ try ...{

String queryString = \"from Book as model where model.\" + propertyName + \"= ?\";

return getHibernateTemplate().find(queryString, value); } catch (RuntimeException re) ...{

log.error(\"find by property name failed\ throw re; } }

public List findByName(Object name) ...{ return findByProperty(NAME, name); }

public List findByIsbm(Object isbm) ...{ return findByProperty(ISBM, isbm); }

public List findByAuthor(Object author) ...{ return findByProperty(AUTHOR, author); }

public List findAll()...{

log.debug(\"finding all Book instances\"); try ...{

String queryString = \"from Book\";

return getHibernateTemplate().find(queryString); } catch (RuntimeException re) ...{ log.error(\"find all failed\ throw re; } }

public Book merge(Book detachedInstance) ...{ log.debug(\"merging Book instance\"); try ...{

Book result = (Book) getHibernateTemplate().merge(detachedInstance); log.debug(\"merge successful\"); return result;

} catch (RuntimeException re) ...{ log.error(\"merge failed\ throw re; } }

public void attachDirty(Book instance) ...{

log.debug(\"attaching dirty Book instance\"); try ...{

getHibernateTemplate().saveOrUpdate(instance);

log.debug(\"attach successful\"); } catch (RuntimeException re) ...{ log.error(\"attach failed\ throw re; } }

public void attachClean(Book instance) ...{

log.debug(\"attaching clean Book instance\"); try ...{

getHibernateTemplate().lock(instance, LockMode.NONE); log.debug(\"attach successful\"); } catch (RuntimeException re) ...{ log.error(\"attach failed\ throw re; } }

public static BookDAO getFromApplicationContext(ApplicationContext ctx) ...{ return (BookDAO) ctx.getBean(\"BookDAO\"); } }

Book.hbm.xml:

下面我们配置一下Spring，我们把applicationContext.xml分成了三个，分别是applicationContext-db.xml,applicationContext-dao.xml,applicationContext-service.我们看看如何配置：

applicationContext-db.xml:

xmlns=\"http://www.springframework.org/schema/beans\" 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-2.0.xsd\">

class=\"org.apache.commons.dbcp.BasicDataSource\"> value=\"org.apache.derby.jdbc.ClientDriver\">

value=\"jdbc:derby://localhost:1527/myeclipse;create=true\">

class=\"org.springframework.orm.hibernate3.LocalSessionFactoryBean\">

org.hibernate.dialect.DerbyDialect

edu/jlu/fuliang/domain/Book.hbm.xml

applicationContext-dao.xml:

xmlns=\"http://www.springframework.org/schema/beans\" 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-2.0.xsd\">

接下来我们来写我们的Service层：

BookManageService.java:

package edu.jlu.fuliang.service; import java.util.List;

import edu.jlu.fuliang.domain.Book;

public interface BookManageService ...{ public List getAllBooks();

public List getBookByName(String name); public void updateBook(Book book); public void addBook(Book book); public void deleteBook(long id); public Book getBookById(Long id); }

BookManageServiceImpl.java:

package edu.jlu.fuliang.serviceImpl;

import java.util.List;

import edu.jlu.fuliang.dao.BookDAO;

import edu.jlu.fuliang.domain.Book;

import edu.jlu.fuliang.service.BookManageService;

public class BookManageServiceImpl implements BookManageService...{ private BookDAO bookDAO; @Override

public void addBook(Book book) ...{ bookDAO.save(book); }

@Override

public void deleteBook(long id) ...{

Book book = bookDAO.findById(id); bookDAO.delete(book); }

@Override

public List getAllBooks() ...{ return bookDAO.findAll(); }

@Override

public List getBookByName(String name) ...{ return bookDAO.findByName(name); }

@Override

public void updateBook(Book book) ...{ bookDAO.attachDirty(book); }

public void setBookDAO(BookDAO bookDAO)...{ this.bookDAO = bookDAO; }

@Override

public Book getBookById(Long id) ...{ return bookDAO.findById(id); } }

然后写一个struts的Action,他完全是一个POJO:

package edu.jlu.fuliang.action;

import java.util.List;

import com.opensymphony.xwork2.Action; import com.opensymphony.xwork2.Preparable;

import edu.jlu.fuliang.domain.Book;

import edu.jlu.fuliang.service.BookManageService;

public class BookAction implements Preparable...{ private BookManageService bookManageService; private List books; private Book book; private Long id;

public String execute()...{

this.books = bookManageService.getAllBooks(); return Action.SUCCESS; }

public String save()...{

this.bookManageService.addBook(book); return execute(); }

public void prepare()throws Exception...{ if(id != null)

book = bookManageService.getBookById(id); }

public String remove()...{

bookManageService.deleteBook(id); return execute(); }

public List getBooks() ...{ return books; }

public void setBooks(List books) ...{ this.books = books; }

public Book getBook() ...{ return book;

}

public void setBook(Book book) ...{ this.book = book; }

public Long getId() ...{ return id; }

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

public void setBookManageService(BookManageService bookManageService) ...{ this.bookManageService = bookManageService; } }

然后我们来配置Service、事务以及struts的action:

applicationContext-service.xml:

xmlns=\"http://www.springframework.org/schema/beans\" 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-2.0.xsd\">

PROPAGATION_REQUIRED,readOnly PROPAGATION_REQUIRED

/* configure struts action as bean in spring*/

配置struts.xml:

\"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN\" \"http://struts.apache.org/dtds/struts-2.0.dtd\">

list.jsp

list.jsp

list.jsp

list.jsp

list.jsp

list.jsp

配置WEB-INF/web.xml:

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\">

struts

org.apache.struts2.dispatcher.FilterDispatcher

struts /*

index.jsp

contextConfigLocation

classpath:applicationContext-*.xml

org.springframework.web.context.ContextLoaderListener 配置一下log:

# This is the configuring for logging displayed in the Application Server # log4j.rootCategory=INFO, stdout,logfile log4j.rootCategory=DEBUG, A1

#console configure

log4j.appender.A1 = org.apache.log4j.ConsoleAppender log4j.appender.A1.layout = org.apache.log4j.PatternLayout

log4j.appender.A1.layout.ConversionPattern = %-4r [%t] %-5p %c %x - %m%n

#stdout configure

log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern= %d %p [%c] - <%m>%n

#logfile configure

log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender log4j.appender.logfile.File=log4j.log

log4j.appender.logfile.layout=org.apache.log4j.PatternLayout

log4j.appender.logfile.layout.ConversionPattern= %d %p [%c] - <%m>%n

# Control logging for other open source packages # Changing the log level to DEBUG when debug log4j.logger.org.springframework=ERROR

log4j.logger.org.springframework.web.context.support.XmlWebApplicationContext=INFO log4j.logger.org.hibernate=ERROR

log4j.logger.org.hibernate.cfg.HbmBinder=INFO log4j.logger.org.hibernate.SQL=ERROR log4j.logger.org.hibernate.cache=ERROR log4j.logger.org.hibernate.transaction=INFO log4j.logger.net.sf.ehcache=ERROR log4j.logger.org.apache.struts=ERROR log4j.logger.com.htxx.service.dao=INFO log4j.logger.org.apache.commons=INFO log4j.logger.org.directwebremoting=INFO

写两个页面index.jsp,list.jsp,使用了Ajax--dojo::

index.jsp:

<%...@ taglib prefix=\"s\" uri=\"/struts-tags\"%>

<%...@ taglib prefix=\"s\" uri=\"/struts-tags\"%>

Books

0\">

在浏览器中输入地址,我们就可以在一个页面进行CRUD操作了.

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