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锁定老帖子 主题：Spring事务处理
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发表时间：2007-08-06
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发表时间：2007-10-29
eyeqq 写道 <h5> <span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">学习资料</span><span style="FONT-FAMILY: Arial"><o:p></o:p></span></h5>
写的不错，请问朋友，我们能不能交流一下，我有些东西想和你探讨
<div class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">从入门到精通</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></div> <div class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> justcode Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">声明式事务处理视频</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></div> <h5><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">事务处理的概念</span><span style="FONT-FAMILY: Arial"><o:p></o:p></span></h5> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> </span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">所谓事务，就是一系列必须都</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> </span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">成功的操作，只要有一步操作失败，所有的其他的步骤将都</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> </span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">要撤销。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <h5><span style="FONT-FAMILY: Arial">Spring</span><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">的事务处理</span><span style="FONT-FAMILY: Arial"><o:p></o:p></span></h5> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">有两种事务处理方式，编程式事务处理</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">(programmatic transaction management)</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">与声明式事务处理</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">(declarative transaction management)</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> </span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">编程式事务处理比传统的</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">JDBC</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">事务有所改进，但是还是要实现具体方法。虽然有三种实现</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">编程式事务处理的方法，但其中都必须写入特定的代码，这样做一是代码量增加，</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">DAO</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">里面每个方法都加上那些必须要写上的代码那也是很烦人的，二是耦合度也提高了，哪天哪天不用</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">用</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">XX</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">也说不定呀</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">....-_-!</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> </span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">声明式事务处事，在</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">DAO</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">中你的对数据库操作的代码可以随意的写上，不用加任何其它代码，事务的处理交给</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">的</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">TransactionProxyFactoryBean</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">来代为处理。</span></p> <p class="MsoNormal"><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial"></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span> xxDAO：</p> <span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p> <div class="dp-highlighter"> <div class="bar"></div> <ol class="dp-j"> <li class="alt"><span><span>....... </span></span> </li> <li class=""><span></span><span class="comment">//对数据库的操作 </span><span> </span> </li> <li class="alt"><span></span><span class="keyword">public</span><span> </span><span class="keyword">void</span><span> update(String name,String password){ </span> </li> <li class=""><span> </span><span class="comment">//业务处理方法 </span><span> </span> </li> <li class="alt"><span> </span><span class="comment">//update1(); </span><span> </span> </li> <li class=""><span> </span><span class="comment">//update2(); </span><span> </span> </li> <li class="alt"><span>} </span> </li> <li class=""><span>...... </span> </li> </ol> </div> <div class="code_title"> </div> </o:p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">配置文件</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span> </p> <span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial"> <div class="dp-highlighter"> <div class="bar"></div> <ol class="dp-xml"> <li class="alt"><span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"dataSource"</span><span> </span></span> </li> <li class=""><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.jdbc.datasource.DriverManagerDataSource"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"driverClassName"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>com.microsoft.jdbc.sqlserver.SQLServerDriver</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"url"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>jdbc:microsoft:sqlserver://localhost:1433/xx</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"name"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>usename</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="comments"><!-- 设定密码 --></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"msg"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>password</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span></span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"transactionManager"</span><span> </span> </li> <li class=""><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.jdbc.datasource.DataSourceTransactionManager"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"dataSource"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"dataSource"</span><span> </span><span class="tag">/></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span></span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"xxDAOProxy"</span><span> </span> </li> <li class=""><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.transaction.interceptor.TransactionProxyFactoryBean"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"transactionManager"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"transactionManager"</span><span> </span><span class="tag">/></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"target"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"xxDAO"</span><span> </span><span class="tag">/></span><span> </span> </li> <li class=""><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"transactionAttributes"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">props</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">prop</span><span> </span><span class="attribute">key</span><span>=</span><span class="attribute-value">"update*"</span><span class="tag">></span><span>PROPAGATION_REQUIRED</span><span class="tag"><span class="tag-name">prop</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><span class="tag-name">props</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> </ol> </div> <p class="MsoNormal">还有一种配置文件的写法，更加的灵活点。</p> <span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial"> <div class="dp-highlighter"> <div class="bar"></div> <ol class="dp-xml"> <li class="alt"><span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"transactionInterceptor"</span><span> </span></span> </li> <li class=""><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.transaction.interceptor.TransactionInterceptor"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"transactionManager"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"transactionManager"</span><span> </span><span class="tag">/></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"transactionAttributeSource"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>org.eyeqq.DAO.xxDAO.update*=PROPAGATION_REQUIRED</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"xxDAOProxy"</span><span> </span> </li> <li class="alt"><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.transaction.interceptor.TransactionProxyFactoryBean"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"interceptorNames"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>transactionInterceptor,xxDAO</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> </ol> </div> <p>如果使用Hibernate的话那么我们的TransactionManager应该换成这样子。</p> <div class="code_title">xml 代码</div> <div class="dp-highlighter"> <div class="bar"></div> <ol class="dp-xml"> <li class="alt"><span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"transactionManager"</span><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.orm.hibernate3.HibernateTransactionManager"</span><span class="tag">></span><span> </span></span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"sessionFactory"</span><span> </span><span class="attribute">ref</span><span>=</span><span class="attribute-value">"sessionFactory"</span><span class="tag">/></span><span> </span> </li> <li class="alt"><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span> </li> <li class="alt"><span>n </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"sessionFactory"</span><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.orm.hibernate3.LocalSessionFactoryBean"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"dataSource"</span><span> </span><span class="attribute">ref</span><span>=</span><span class="attribute-value">"dataSource"</span><span> </span><span class="tag">/></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"mappingResources"</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">list</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>org.eyeqq.vo.userVO.hbm.xml</span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><span class="tag-name">list</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"hibernateProperties"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">props</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">prop</span><span> </span><span class="attribute">key</span><span>=</span><span class="attribute-value">"hibernate.dialect"</span><span class="tag">></span><span>org.hibernate.dialect.SQLServerDialect</span><span class="tag"><span class="tag-name">prop</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">prop</span><span> </span><span class="attribute">key</span><span>=</span><span class="attribute-value">"hibernate.show_sql"</span><span class="tag">></span><span>true</span><span class="tag"><span class="tag-name">prop</span><span class="tag">></span><span> </span> </span></li> <li class=""><span> </span><span class="tag"><span class="tag-name">props</span><span class="tag">></span><span> </span> </span> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">target</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">属性指定要被</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">TransactionProxyFactoryBean</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">代理处理事务的类为</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">xxDAO</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span class="tag2"><span class="tag2"><span dir="ltr"><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">transactionAttributes指定</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">xxDAO</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">中需要实现事务处理的方法。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></span></span></span></p> <p class="MsoNormal"><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">事务属性值：</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">PROPAGATION_REQUIRED</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">：如果当前没有事务，就新建一个事务。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">PROPAGATION_SUPPORTS</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">：如果当前没有事务，就以非事务方式执行。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">PROPAGATION_MANDATORY</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">：如果当前没有事务，就抛出异常。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">PROPAGATION_REQUIRES_NEW</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">：新建事务，如果当前存在事务，把当前事务挂起。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">PROPAGATION_NOT_SUPPORTED</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">：以非事务的方式执行操作，如果当前存在事务，就把当前事务挂起。</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p></o:p></span></p> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">PROPAGATION_NEVER</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">：以非事务方式执行，如果当前存在事务，则抛出异常。</span></p> <p class="MsoNormal"><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial"><strong>项目经验</strong></span></p> <p class="MsoNormal"><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">在项目的时后可以做一个BaseService，在BaseService里做一些对数据库的通用操作，对BaseService做Spring的声明式事务处理，XML的配置是支持通配符的<font face="Arial"><prop key="add*">PROPAGATION_REQUIRED</prop>，所以在项目的时后命名要作到统一命名。其它所有Service都继承这一个BaseService，这样其子Service Spring也能对其进行事务控制。</font></span></p> </li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><span class="tag-name">bean</span><span class="tag">></span><span> </span> </span></li> </ol> </div> <p>这样子，只要在<span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">service</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">里面调用</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">update</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">方法，</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">Spring</span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">就会自动给你完成事务的处理。</span></p> <h5><span style="FONT-FAMILY: Arial">XML</span><span lang="ZH-CN" style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">代码说明：</span><span style="FONT-FAMILY: Arial"><o:p></o:p></span></h5> <p class="MsoNormal"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"> </span><span lang="ZH-CN" style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">数据源那很简单看看就明白了</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial">....</span></p> <span style="FONT-SIZE: 9pt; FONT-FAMILY: Arial"><o:p> <div class="code_title"> <div class="dp-highlighter"> <div class="bar"></div> <ol class="dp-xml"> <li class="alt"><span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"target"</span><span class="tag">></span><span> </span></span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"xxDAO"</span><span> </span><span class="tag">/></span><span> </span> </li> <li class="alt"><span></span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"transactionAttributes"</span><span class="tag">></span><span> </span> </li> <li class="alt"><span> </span><span class="tag"><</span><span class="tag-name">props</span><span class="tag">></span><span> </span> </li> <li class=""><span> </span><span class="tag"><</span><span class="tag-name">prop</span><span> </span><span class="attribute">key</span><span>=</span><span class="attribute-value">"update*"</span><span class="tag">></span><span>PROPAGATION_REQUIRED</span><span class="tag"><span class="tag-name">prop</span><span class="tag">></span><span> </span> </span></li> <li class="alt"><span> </span><span class="tag"><span class="tag-name">props</span><span class="tag">></span><span> </span> </span></li> <li class=""><span></span><span class="tag"><span class="tag-name">property</span><span class="tag">></span><span> </span></span> </li> </ol> </div> </div> </o:p></span></span></span></span> |
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