10.Spring transaction Management "TX"

Transfer Case Environment Setup

1. Introduction of the JAR package

6 packages of the IOC

4 Packages of AOP

C3P0 's 1 Packs

MySQL's 1 drive packs

2 Target packages for JDBC

Integration of JUnit Test 1 packages

2. Introduction of configuration Files

Log4j.properties+applicationcontext.xml

 ### direct log messages to stdout # #log4j. Appender.stdout  =org.apache.log4j.consoleappenderlog4j.appender.stdout.target  = system.errlog4j.appender.stdout.layout  = Org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern  =%d{absolute}%5p%c{1}:%l-%m%n### Direct messages to File MyLog.log # # #log4j. Appender.file  =org.apache.log4j.fileappenderlog4j.appender.file.file  =c\: Mylog.loglog4j.appender.file.layout  = Org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern  =%d{absolute}%5p%c{1}:%l-%m%n### set log levels-for more verbose logging change ' info ' to ' Debug ' # # #log4j. Rootlogg Er  =info, stdout 

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:context= "Http://www.springframework.org/schema/context"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"Xmlns:tx= "Http://www.springframework.org/schema/tx"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd    Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP http://www.springframework.org/schema/aop/spring-aop.xsd/HTTP Www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd ">        <!--c3p0 Connection Pool -    <BeanID= "DataSource"class= "Com.mchange.v2.c3p0.ComboPooledDataSource">        < Propertyname= "Driverclass"value= "Com.mysql.jdbc.Driver"/>        < Propertyname= "Jdbcurl"value= "Jdbc:mysql:///spring_day03"/>        < Propertyname= "User"value= "root"/>        < Propertyname= "Password"value= "Toor"/>    </Bean>        </Beans>

3. Create the corresponding package structure

 Public InterfaceAccountdao {/*** turn out *@paramOut *@param Money*/     Public voidOutmoney (String out,DoubleMoney ); /*** Transfer to *@paramIn *@param Money*/     Public voidInmoney (String in,DoubleMoney );}

 Public classAccountdaoimplextendsJdbcdaosupportImplementsAccountdao {//turn out@Override Public voidOutmoney (String out,DoubleMoney ) {        //TODO auto-generated Method Stub         This. Getjdbctemplate (). Update ("Update t_account set money=money-?"). where Name=? ", money,out); }    //transferred@Override Public voidInmoney (String in,DoubleMoney ) {        //TODO auto-generated Method Stub         This. Getjdbctemplate (). Update ("Update t_account set money=money+?"). where Name=? ", Money,in); }}

 Public Interface Accountservice {    /**     * transfer        @param     out@param   in @param     money*/public void           Pay (String out,string in,double money );    }

 Public classAccountserviceimplImplementsAccountservice {PrivateAccountdao Accountdao;  Public voidSetaccountdao (Accountdao Accountdao) { This. Accountdao =Accountdao; } @Override Public voidPay (string out, string in,DoubleMoney ) {        //TODO auto-generated Method Stub//turn outAccountdao.outmoney (out, money); //Exception//int i = 1/0; //transferredAccountdao.inmoney (in, money); }}

4. Modify the configuration file

    <!--managing the business layer injection persistence layer objects -    <BeanID= "Accountservice"class= "Com.spring.demo1.AccountServiceImpl">        < Propertyname= "Accountdao"ref= "Accountdao"/>    </Bean>        <!--Manage persistent Layer injection data sources (automatically generate JDBC template classes due to inheritance jdbcdaosupport) -    <BeanID= "Accountdao"class= "Com.spring.demo1.AccountDaoImpl">        < Propertyname= "DataSource"ref= "DataSource"/>    </Bean>

5. Testing

@RunWith (Springjunit4classrunner.  Class) @ContextConfiguration (Value= "Classpath:applicationContext.xml") Public class Demo1 {        @Resource (name= "Accountservice")    private  Accountservice Accountservice;        @Test    publicvoid  m01 () {        Accountservice.pay ("Test 1", "Test 2", 1000 );    }}

No abnormal normal transfer

An exception does not roll back

1.XML mode

1. Configure the transaction manager

 <!--  configuration transaction manager  -->  <  bean  id  = "TransactionManager"   class  = "Org.springframework.jdbc.datasource.DataSourceTransactionManager"  >  <  property  name  = "DataSource"   ref  =" DataSource " />  </ bean  >  

2. Configuring Transaction Enhancements

    <!--Configuring Transaction Enhancements -    <Tx:adviceID= "Myadvice"Transaction-manager= "TransactionManager">        <tx:attributes>            <Tx:methodname= "Pay"/>        </tx:attributes>    </Tx:advice>

　　Name= "Pay" represents the entry point

4. Configuring AOP Facets

    <!---    <aop:config>        <   advice-ref= "Myadvice"  pointcut= "Execution (* Com.spring.demo2.AccountServiceImpl.pay (..)) " />    </ Aop:config >

　　注意：如果是自己编写的切面，使用<aop:aspect>标签，如果是系统制作的，使用<aop:advisor>标签。

5. Testing

@RunWith (Springjunit4classrunner.  Class) @ContextConfiguration (Value= "Classpath:applicationContext2.xml") Public class Demo1 {        @Resource (name= "Accountservice")    private  Accountservice Accountservice;        @Test    publicvoid  m01 () {        Accountservice.pay ("Test 1", "Test 2", 1000 );    }}

No abnormal normal transfer

An exception rollback occurred

2. How to Annotate

1. Configure the transaction manager

    <!---    < id = "TransactionManager"  Class= "Org.springframework.jdbc.datasource.DataSourceTransactionManager">        <  name= "DataSource"  ref= "DataSource"/>    </ Bean >

2. Turn on annotation transactions

    <!---    <Transaction-manager = " TransactionManager "/>

3. Add annotations

在业务层上添加一个注解:@Transactiona

4. Testing

No abnormal normal transfer

An exception rollback occurred

@RunWith (Springjunit4classrunner.  Class) @ContextConfiguration (Value= "Classpath:applicationContext3.xml") Public class Demo1 {        @Resource (name= "Accountservice")    private  Accountservice Accountservice;        @Test    publicvoid  m01 () {        Accountservice.pay ("Test 1", "Test 2", 1000 );    }}

10.Spring transaction Management "TX"