hibernate配置文件hibernate.cfg.xml和.hbm.xml的详细解释

原文地址:http://blog.csdn.net/qiaqia609/article/details/9456489

hibernate.cfg.xml

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  1. -标准的XML文件的起始行,version='1.0'表明XML的版本,encoding='gb2312'表明XML文件的编码方式-->     
  2.                 xml version='1.0' encoding='gb2312'?>     
  3.      
  4.           "-//Hibernate/Hibernate Configuration DTD 3.0//EN"     
  5.           "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">     
  6.               
  7.     <hibernate-configuration>     
  8.          
  9.       <session-factory>        
  10.            
  11.           <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver property>     
  12.             
  13.             <property name="hibernate.connection.url">jdbc:mysql://localhost/hibernateproperty>  
  14.          
  15.           <property name="hibernate.connection.username">root property>     
  16.                
  17.           <property name="hibernate.connection.password">123456 property>            
  18.                
  19.           <property name="hibernate.connection.pool.size">20 property>            
  20.              
  21.         <property name="hibernate.show_sql">true property>     
  22.              
  23.         <property name="jdbc.fetch_size">50 property>     
  24.              
  25.         <property name="jdbc.batch_size">23 property>     
  26.              
  27.         <property name="jdbc.use_scrollable_resultset">false property>     
  28.              
  29.         <property name="Connection.useUnicode">true property>     
  30.              
  31.     <property name="connection.characterEncoding">gbk property>          
  32.             
  33.              
  34.           <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect property>     
  35.                     
  36.           <mapping resource="org/mxg/UserInfo.hbm.xml">     
  37.   session-factory>     
  38.   hibernate-configuration>        
  39.       
  40.       
  41.       
  42.   <bean id="dataSource"      
  43.   class="org.apache.commons.dbcp.BasicDataSource"      
  44.   destroy-method="close">      
  45. //连接驱动        
  46.   <property name="driverClassName" value="${jdbc.driverClassName}" />      
  47. //连接url,        
  48. <property name="url" value="${jdbc.url}" />      
  49. //连接用户名        
  50.   <property name="username" value="${jdbc.username}" />      
  51. //连接密码        
  52.   <property name="password" value="${jdbc.password}" />      
  53. bean>      
  54.       
  55. <bean id="hbSessionFactory"      
  56.   class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">      
  57.   <property name="dataSource" ref="dataSource" />      
  58.   <property name="configLocation">      
  59. //hibernate配置文件位置        
  60.   <value>WEB-INF/hibernate.cfg.xml value>      
  61.   property>      
  62.   <property name="configurationClass"      
  63.   value="org.hibernate.cfg.AnnotationConfiguration" />      
  64.   <property name="hibernateProperties">      
  65.   <props>      
  66.   //针对oracle数据库的方言,特定的关系数据库生成优化的SQL        
  67.     <prop key="hibernate.dialect">      
  68.     org.hibernate.dialect.OracleDialect        
  69.     prop>      
  70.   //选择HQL解析器的实现        
  71.     <prop key="hibernate.query.factory_class">      
  72.     org.hibernate.hql.ast.ASTQueryTranslatorFactory        
  73.     prop>      
  74.     //是否在控制台打印sql语句        
  75.     <prop key="hibernate.show_sql">true prop>      
  76.     //在Hibernate系统参数中hibernate.use_outer_join被打开的情况下,该参数用来允许使用outer join来载入此集合的数据。        
  77.     <prop key="hibernate.use_outer_join">true prop>      
  78.   //默认打开,启用cglib反射优化。cglib是用来在Hibernate中动态生成PO字节码的,打开优化可以加快字节码构造的速度        
  79.   <prop key="hibernate.cglib.use_reflection_optimizer">true prop>      
  80.   //输出格式化后的sql,更方便查看        
  81.   <prop key="hibernate.format_sql">true prop>      
  82.   //“useUnicode”和“characterEncoding”决定了它是否在客户端和服务器端传输过程中进行Encode,以及如何进行Encode        
  83.   <prop key="hibernate.connection.useUnicode">true prop>      
  84.   //允许查询缓存, 个别查询仍然需要被设置为可缓存的.        
  85.   <prop key="hibernate.cache.use_query_cache">false prop>      
  86.   <prop key="hibernate.default_batch_fetch_size">16 prop>      
  87.     //连接池的最大活动个数        
  88.     <prop key="hibernate.dbcp.maxActive">100 prop>      
  89.   //当连接池中的连接已经被耗尽的时候,DBCP将怎样处理(0 = 失败,1 = 等待,2  =  增长)        
  90.     <prop key="hibernate.dbcp.whenExhaustedAction">prop>      
  91.     //最大等待时间        
  92.     <prop key="hibernate.dbcp.maxWait">1200 prop>      
  93.     //没有人用连接的时候,最大闲置的连接个数        
  94.     <prop key="hibernate.dbcp.maxIdle">10 prop>      
  95.     ##以下是对prepared statement的处理,同上。        
  96.     <prop key="hibernate.dbcp.ps.maxActive">100 prop>      
  97.     <prop key="hibernate.dbcp.ps.whenExhaustedAction">prop>      
  98.     <prop key="hibernate.dbcp.ps.maxWait">1200 prop>      
  99.     <prop key="hibernate.dbcp.ps.maxIdle">10 prop>      
  100.   props>      
  101.   property>      
  102. bean>      

XXX.hbm.xml

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  1. xml version="1.0"?>    
  2.     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"    
  3.     "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">    
  4.         

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