Spring申明式事务之TransactionInterceptor学习笔记

1. 编写业务方法

   @Data
   public class Quote {
          
       private Integer id ;
       private String name ;
   }
   public interface IQuoteService {
          
       Quote getQuote() ;
   }
   public class QuoteServiceImpl implements IQuoteService {
          
       private final JdbcTemplate jdbcTemplate ;
       public QuoteServiceImpl(JdbcTemplate jdbcTemplate){
          
           this.jdbcTemplate = jdbcTemplate ;
       }
       @Override
       public Quote getQuote() {
          
           String sql = "select * from quota where id =1" ;
           return jdbcTemplate.queryForObject(sql, (rs, rowNum) -> {
          
               Quote quota = new Quote() ;
               int id = rs.getInt("id");
               String name = rs.getString("name");
               quota.setId(id);
               quota.setName(name);
               return quota ;
           }) ;
       }
   }
   

2. 启动类排除掉TransactionAutoConfiguration类的自动注入（配置类中已手动添加事务相关配置）

   @ComponentScan(basePackages = "com.yicj.study.transaction.service")
   @ImportResource({
          "transaction.xml"})
   @SpringBootApplication(exclude = {
          TransactionAutoConfiguration.class})
   public class TransactionXmlApplication {
          
       public static void main(String[] args) {
          
           SpringApplication.run(TransactionXmlApplication.class, args) ;
       }
   }
   

3. 业务对象注入到spring容器中(transaction.xml中代码片段)

   <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
       <property name="driverClassName" value="com.mysql.cj.jdbc.Driver" />
       <property name="url" value="jdbc:mysql://127.0.0.1:3306/demo?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT" />
       <property name="username" value="root" />
       <property name="password" value="root" />
   bean>
   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
       <property name="dataSource" ref="dataSource" />
   bean>
   <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" >
       <property name="dataSource" ref="dataSource" />
   bean>
   <bean id="quoteServiceTarget" class="com.yicj.study.transaction.service.impl.QuoteServiceImpl">
       <constructor-arg ref="jdbcTemplate" />
   bean>
   

4. 使用ProxyFactoryBean + TransactionInterceptor添加声明式事务(transaction.xml中代码片段)

   <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
       <property name="transactionManager" ref="transactionManager" />
       <property name="transactionAttributes">
           <props>
               <prop key="queryById*">PROPAGATION_SUPPORTS,readOnly,timeout_20prop>
               <prop key="saveQuote">PROPAGATION_REQUIREDprop>
               <prop key="updateQuote">PROPAGATION_REQUIREDprop>
               <prop key="deleteQuote">PROPAGATION_REQUIREDprop>
           props>
       property>
   bean>
   
   <bean id="quoteService" class="org.springframework.aop.framework.ProxyFactoryBean">
       <property name="target" ref="quoteServiceTarget" />
       <property name="proxyInterfaces" value="com.yicj.study.transaction.service.IQuoteService" />
       <property name="interceptorNames">
           <list>
               <value>transactionInterceptorvalue>
           list>
       property>
   bean>
   

5. 使用一站式的TransactionProxyFactoryBean添加声明式事务(transaction.xml中代码片段)

   
       <bean id="quoteService" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
           <property name="target" ref="quoteServiceTarget" />
           <property name="transactionManager" ref="transactionManager" />
           <property name="proxyInterfaces" value="com.yicj.study.transaction.service.IQuoteService" />
           <property name="transactionAttributes">
               <props>
                   <prop key="queryById*">PROPAGATION_SUPPORTS,readOnly,timeout_20prop>
                   <prop key="saveQuote">PROPAGATION_REQUIREDprop>
                   <prop key="updateQuote">PROPAGATION_REQUIREDprop>
                   <prop key="deleteQuote">PROPAGATION_REQUIREDprop>
               props>
           property>
       bean>
   

6. 使用BeanNameAutoProxyCreator添加声明式事务(transaction.xml中代码片段)

   <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
       <property name="transactionManager" ref="transactionManager" />
       <property name="transactionAttributes">
           <props>
               <prop key="queryById*">PROPAGATION_SUPPORTS,readOnly,timeout_20prop>
               <prop key="saveQuote">PROPAGATION_REQUIREDprop>
               <prop key="updateQuote">PROPAGATION_REQUIREDprop>
               <prop key="deleteQuote">PROPAGATION_REQUIREDprop>
           props>
       property>
   bean>
   <bean id="autoProxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
       <property name="interceptorNames">
           <list>
               <value>transactionInterceptorvalue>
           list>
       property>
       <property name="beanNames">
           <list>
               <idref bean="quoteServiceTarget" />
           list>
       property>
   bean>
   

7. 使用spring2.x添加声明式事务(transaction.xml中代码片段)

   <aop:config>
       <aop:pointcut id="txService"
         expression="execution(* com.yicj.study.transaction.service.IQuoteService.*(..))"/>
       <aop:advisor pointcut-ref="txService" advice-ref="txAdvice" />
   aop:config>
   <tx:advice id="txAdvice" transaction-manager="transactionManager">
       <tx:attributes>
           <tx:method name="queryById*" propagation="SUPPORTS" read-only="true" timeout="20"/>
           <tx:method name="saveQuote" />
           <tx:method name="updateQuote" />
           <tx:method name="deleteQuote" />
       tx:attributes>
   tx:advice>
   

8. 基于注解驱动的声明式事务,QuoteServiceImpl类需要添加@Transaction标注必要的事务管理信息

   <tx:annotation-driven transaction-manager="transactionManager" />