Ajax+Struts2+Spring+Hibernate整合

 我们沿用Spring+Hibernate+DWR的例子，做一个Ajax+Struts2.0+Spring+Hibernate整合，许多步骤大体相似，
我就直接搬过来了：
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", re);
            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", re);
            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", id);
            return instance;
        } catch (RuntimeException re) ...{
            log.error("get failed", re);
            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", re);
            throw re;
        }
    }

    public List findByProperty(String propertyName, Object value) ...{
        log.debug("finding Book instance with property: " + propertyName
                + ", value: " + value);
        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", re);
            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", re);
            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", re);
            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", re);
            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", re);
            throw re;
        }
    }

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

Book.hbm.xml:

xml version="1.0" encoding="utf-8" ?>
DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

< hibernate-mapping >
     < class  name ="edu.jlu.fuliang.domain.Book"  table ="BOOK"  schema ="CLASSICCARS" >
         < id  name ="id"  type ="long" >
             < column  name ="ID"   />
             < generator  class ="identity" > generator >
         id >
         < property  name ="name"  type ="string" >
             < column  name ="NAME"  length ="20"  not-null ="true"   />
         property >
         < property  name ="isbm"  type ="string" >
             < column  name ="ISBM"  length ="20"  not-null ="true"  unique ="true"   />
         property >
         < property  name ="author"  type ="string" >
             < column  name ="AUTHOR"  length ="15"   />
         property >
     class >
hibernate-mapping >

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:

xml version="1.0" encoding="UTF-8" ?>
< beans
     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" >

     < bean  id ="dataSource"
        class ="org.apache.commons.dbcp.BasicDataSource" >
         < property  name ="driverClassName"
            value ="org.apache.derby.jdbc.ClientDriver" >
         property >
         < property  name ="url"
            value ="jdbc:derby://localhost:1527/myeclipse;create=true" >
         property >
         < property  name ="username"  value ="classiccars" > property >
         < property  name ="password"  value ="myeclipse" > property >
     bean >
    
     < bean  id ="sessionFactory"
        class ="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
         < property  name ="dataSource" >
             < ref  bean ="dataSource"   />
         property >
         < property  name ="hibernateProperties" >
             < props >
                 < prop  key ="hibernate.dialect" >
                    org.hibernate.dialect.DerbyDialect
                 prop >
             props >
         property >
         < property  name ="mappingResources" >
             < list >
                 < value > edu/jlu/fuliang/domain/Book.hbm.xml value > list >
         property >
     bean >
beans >

applicationContext-dao.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"
    xsi:schemaLocation ="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" >
    
     < bean  id ="bookDAO"  class ="edu.jlu.fuliang.dao.BookDAO" >
         < property  name ="sessionFactory" >
             < ref  bean ="sessionFactory"   />
         property >
     bean >

beans >

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

    @Override
    public List<Book> 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<Book> 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<Book> getBooks() ...{
        return books;
    }
    
    public void setBooks(List<Book> 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:

xml version="1.0" encoding="UTF-8" ?>
< beans
     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" >
     < bean  id ="bookManageServiceTarget"  class ="edu.jlu.fuliang.serviceImpl.BookManageServiceImpl" >
         < property  name ="bookDAO" >
             < ref  bean ="bookDAO" />
         property >
     bean >
     < bean  id ="transactionManager"  class ="org.springframework.orm.hibernate3.HibernateTransactionManager" >
         < property  name ="sessionFactory" >
             < ref  bean ="sessionFactory" />
         property >
     bean >
     < bean  id ="bookManageService"  class ="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" >
         < property  name ="transactionManager" >
             < ref  bean ="transactionManager" />
         property >
         < property  name ="target" >
             < ref  bean ="bookManageServiceTarget" />
         property >
         < property  name ="transactionAttributes" >
             < props >
                 < prop  key ="get*" > PROPAGATION_REQUIRED,readOnly prop >
                 < prop  key ="*" > PROPAGATION_REQUIRED prop >
             props >
         property >
     bean >
    /* configure struts action as bean in spring*/
     < bean  id ="bookAction"  scope ="prototype"  class ="edu.jlu.fuliang.action.BookAction" >
         < property  name ="bookManageService" >
             < ref  bean ="bookManageService" />
         property >
     bean >
    
beans >

配置struts.xml:

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 >
     < constant  name ="struts.objectFactory"  value ="spring" />
     < constant  name ="struts.devMode"  value ="true" />
    
     < package  name ="book"  extends ="struts-default" >
         < action  name ="list"  method ="execute"  class ="bookAction" >
             < result > list.jsp result >
             < result  name ="input" > list.jsp result >
         action >
         < action  name ="remove"  method ="remove"  class ="bookAction" >
             < result > list.jsp result >
             < result  name ="input" > list.jsp result >
         action >
         < action  name ="save"  method ="save"  class ="bookAction" >
             < result > list.jsp result >
             < result  name ="input" > list.jsp result >
         action >
     package >
struts >

配置WEB-INF/web.xml:

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.FilterDispatcher
      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 >
 
  < 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 >
web-app >

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" %>
< html >
     < head >
         < s:head  theme ="ajax"  debug ="true" />
         < script  type ="text/javascript" > ...
            dojo.event.topic.subscribe("/save", function(data, type, request) ...{
                if(type == "load") ...{
                    dojo.byId("id").value = "";
                    dojo.byId("name").value = "";
                    dojo.byId("isbm").value = "";
                    dojo.byId("author").value = "";
                }
            });

            dojo.event.topic.subscribe("/edit", function(data, type, request) ...{
                if(type == "before") ...{
                    var id = data.split("_")[1];
                    var tr = dojo.byId("row_"+id);
                    var tds = tr.getElementsByTagName("td");

                    dojo.byId("id").value = id;
                    dojo.byId("name").value = dojo.string.trim(dojo.dom.textContent(tds[0]));
                    dojo.byId("isbm").value = dojo.string.trim(dojo.dom.textContent(tds[1]));
                    dojo.byId("author").value = dojo.string.trim(dojo.dom.textContent(tds[1]));
                }
            });
         script >
     head >
     < body >
         < s:url  action ="list"  id ="descrsUrl" />

         < div  style ="width: 300px;border-style: solid" >
             < div  style ="text-align: right;" >
                 < s:a  theme ="ajax"  notifyTopics ="/refresh" > Refresh s:a >
             div >
             < s:div  id ="books"  theme ="ajax"  href ="%{descrsUrl}"  loadingText ="Loading..."  listenTopics ="/refresh" />
         div >

         < br />

         < div  style ="width: 300px;border-style: solid" >
             < p > Book Data p >
             < s:form  action ="save"  validate ="true" >
                 < s:textfield  id ="id"  name ="person.id"  cssStyle ="display:none" />
                 < s:textfield  id ="name"  label ="Name"  name ="book.name" />
                 < s:textfield  id ="isbm"  label ="ISBN"  name ="book.isbm" />
                 < s:textfield  id ="author"  label ="Author"  name ="book.author" />
                 < s:submit  theme ="ajax"  targets ="books"  notifyTopics ="/save" />
             s:form >
         div >
     body >
html >

list.jsp:

<% ... @ taglib prefix="s" uri="/struts-tags" %>
< p > Books p >
< s:if  test ="books.size > 0" >
  < table >
   < s:iterator  value ="books" >
    < tr  id ="row_ id" /> ">
     < td >
      < s:property  value ="name"   />
     td >
     < td >
      < s:property  value ="isbm"   />
     td >
     < td >
      < s:property  value ="author" />
     td >
     < td >
      < s:url  id ="removeUrl"  action ="remove" >
       < s:param  name ="id"  value ="id"   />
      s:url >
      < s:a  href ="%{removeUrl}"  theme ="ajax"  targets ="books" > Remove s:a >
      < s:a  id ="a_%{id}"  theme ="ajax"  notifyTopics ="/edit" > Edit s:a >
     td >
    tr >
   s:iterator >
  table >
s:if >

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.