[스프링3트랜잭션강좌/예제/소스]트랜잭션어드바이스(tx:advice, tx:attributes, transactionManager)를통한선언적인방식트랜잭션(XML설정방식),spring framework3.X transaction
Spring2.0 이상에서 tx 스키마에 정의된 <ta:advice> 엘리먼트에 의해 Transaction의 어드바이스를 쉽게 구현할 수 있다.
tx 네임스페이스에서 tx:advice가 가장 중요한데 사용 예는 다음과 같다. 또한 스프링 AOP가 프록시 기반이므로 트랜잭션이 적용될 메소드는 public으로 선언되어야 한다.
<tx:advice id=“txAdvice” transaction-manager=“transactionManager”>
<tx:attributes>
<tx:method name=“*dao” propagation=“REQUIRED”/>
<tx:method name=“*” propagation=“REQUIRED”read-only=“true”/>
</tx:attributes>
</tx:advice>
<bean id=“transactionManager” class=“org.springframework.jdbc.datasource.DataSourceTransactionManager”>
<property name=“dataSource” ref=“dataSource”/>
</bean>
<tx:advice>tx:attribute에 사용되는 속성
name : 적용될 어드바이스에 대응되는 메소드명(필수), 와일드카드 (*)가능
isolation : 트랜잭션 격리 수준
no-rollback-for : 예외가 발생했을때 이를 무시하고 Transaction을 롤백하지 않고 계속 진행할 예외를 지정
propagation : Transaction 전파방식 지정, 기본값:REQUIRED
read-only : 트랜잭션이 읽기 전용인지, 기본값:FALSE
rollback-for : 예외가 발생했을 때 트랜잭션을 롤백 시킬 예외들의 구체적인 타입을 콤마로 구분하여 기술
timeout : 트랜잭션 타임아웃을 지정
<tx:advice> 자체만 보았을 때는 어느 빈에 advice가 적용되어야 하는지 알수 없다. 그러므로 PointCut이 필요하다.( AOP의 Advice에 지나지 않는다. )
<aop:config>
<aop:advisor pointcut=“execution(* *..SpringBoardDAO.*dao(..))”
advice-ref=“txAdvice”/>
</aop:config>
[예제를 통해 스프링 선언적 트랜잭션에 대해 이해하자.]
1. Spring Maven Project 생성 (springtr1 이라는 이름으로)
전체 이클립스 프로젝트 구성은 다음과 같다.
:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" />
<그림, 스프링 선언적트랜잭션예제 이클립스화면>
[pom.xml]
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework.samples</groupId>
<artifactId>springtr1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<!-- Generic properties -->
<java.version>1.6</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Spring -->
<spring-framework.version>3.2.3.RELEASE</spring-framework.version>
<!-- Logging -->
<logback.version>1.0.13</logback.version>
<slf4j.version>1.7.5</slf4j.version>
<!-- Test -->
<junit.version>4.11</junit.version>
</properties>
<dependencies>
<!-- Spring and Transactions -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<!-- Logging with SLF4J & LogBack -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<scope>runtime</scope>
</dependency>
<!-- Test Artifacts -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.5.4</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.1.0.7.0</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>oracle</id>
<name>ORACLE JDBC Repository</name>
<url>http://maven.jahia.org/maven2</url>
</repository>
</repositories>
</project>
2. Emp.java
package onj.edu.tr1.model;
public class Emp {
int empno;
String ename;
int deptno;
public Emp(int empno, String ename, int deptno) {
this.empno = empno;
this.ename = ename;
this.deptno = deptno;
}
public int getEmpno() {
return empno;
}
public void setEmpno(int empno) {
this.empno = empno;
}
public String getEname() {
return ename;
}
public void setEname(String ename) {
this.ename = ename;
}
public int getDeptno() {
return deptno;
}
public void setDeptno(int deptno) {
this.deptno = deptno;
}
}
3. OnjDao.java
package onj.edu.tr1.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import onj.edu.tr1.model.Emp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;
//JdbcDaoSupport클래스는 간단한 DataSource를 지원하기 위해 JdbcTemplate 클래스를 지원.
//jdbcTemplate은 DB연결, PrepatedStatement객체생성, 파라미터주입, SQL문장실행,
//DB접속종료등을 전담하며 getJdbcTemplate()을 통해 얻는다.
@Repository("onjDao")
public class OnjDao{
private JdbcTemplate jdbaTemplate;
@Autowired
public void setDataSource(DataSource dataSource){
this.jdbaTemplate = new JdbcTemplate(dataSource);
}
public List<Emp> getEmpByDeptno(int deptno) {
String sql = "select empno, ename, deptno from emp where deptno = ?";
List<Emp> list = jdbaTemplate.query(
sql,
new Object[] { deptno },
new RowMapper() {
public Object mapRow(ResultSet rs, int index) throws SQLException {
int empno = rs.getInt("empno");
String ename = rs.getString("ename");
int deptno = rs.getInt("deptno");
return new Emp(empno, ename, deptno);
}
}
);
return list;
}
public void insertEmps() throws Exception {
String sql = "insert into emp(empno, ename, deptno) values (?, ?, ?)";
jdbaTemplate.update(sql, new Object[] { 8771, "Onj1" , 10});
jdbaTemplate.update(sql, new Object[] { 8772, "Onj2", 10 });
jdbaTemplate.update(sql, new Object[] { 8773, "Onj3", 10 });
//같은 데이터를 넣으면 키값이 중복되어 DataAccessException 발생(런타임예외)
//jdbaTemplate.update(sql, new Object[] { 333, "Onj3", 10 });
//아래 주석을 풀면 Exception이 발생하므로 트랜잭션은 롤백
//onjoraclejava.xml에서 rollback-for="Exception"으로 정의했기 때문
//만약 정의하지 않았다면 주석을 풀더라도 트랜잭션은 롤백안됨
//throw new Exception();
}
}
4. OnjService.java
package onj.edu.tr1.service;
import java.util.List;
import onj.edu.tr1.dao.OnjDao;
import onj.edu.tr1.model.Emp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service("onjService")
public class OnjService {
@Autowired
private OnjDao dao;
public OnjService() {}
public OnjService(OnjDao onjDao) {
this.dao = onjDao;
}
public List<Emp> getEmpByDeptno(int deptno) {
return dao.getEmpByDeptno(deptno);
}
public void insertEmps() throws Exception{
dao.insertEmps();
}
}
5. onjoraclejava.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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<!-- 접속할 DB의 DataSource정의 -->
<bean name="dataSource"
class="org.apache.commons.dbcp.BasicDataSource"
p:driverClassName ="oracle.jdbc.driver.OracleDriver"
p:url = "jdbc:oracle:thin:@192.168.0.7:1521:onj"
p:username = "scott"
p:password = "tiger" />
<!-- 트랜잭션매니저 정의 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 트랜잭션용 Advice 구성 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 예외 중에서 Exception이 발생한 경우에도 롤백이 실행된다는 의미 -->
<!-- 스프링은 트랜잭션 설정이 된 메소드에서 RuntimeException이 발생한 경우와
Errors가 발생한 경우에만 기본적으로 롤백을 수행하며
그 외의 예외들은 아래와같이직접 설정한 경우에만 롤백을 한다. -->
<tx:method name="get*" read-only="true"/>
<tx:method name="*" propagation="REQUIRED" rollback-for="Exception"/>
</tx:attributes>
</tx:advice>
<!-- aop 네임스페이스를 이용한 트랙잭션이 적용될 매소드(Pointcut), 충고자(Advisor)정의 -->
<aop:config>
<aop:pointcut id="onjPointCut" __EXPRESSION__="execution(* onj.edu.tr1.dao.*Dao.insert*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="onjPointCut" />
</aop:config>
<context:component-scan base-package="onj.edu.tr1.dao"/>
<context:component-scan base-package="onj.edu.tr1.service"/>
<context:component-scan base-package="onj.edu.tr1.service"/>
</beans>
6. 테스트를 위한 client program
package onj.edu.tr1.client;
import java.util.List;
import onj.edu.tr1.model.Emp;
import onj.edu.tr1.service.OnjService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class OnjEmpTest {
public static void main(String[] args) throws Exception{
ApplicationContext ctx = new ClassPathXmlApplicationContext("onjoraclejava.xml");
OnjService onjService = (OnjService)ctx.getBean("onjService");
List<Emp> list = onjService.getEmpByDeptno(10);
display(list);
onjService.insertEmps();
list = onjService.getEmpByDeptno(10);
display(list);
}
public static void display(List<Emp> list) {
for(Object e: list) {
System.out.print(((Emp)e).getEmpno());
System.out.print(((Emp)e).getEname());
System.out.println(((Emp)e).getDeptno());
}
}
}
7. 결과…. 일부러 중복된 데이터를 입력했는데 정상적으로 롤백 되었다.
3월 02, 2014 3:51:35 오후 org.springframework.context.support.AbstractApplicationContext prepareRefresh
정보: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@830122: startup date [Sun Mar 02 15:51:35 KST 2014]; root of context hierarchy
3월 02, 2014 3:51:35 오후 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
정보: Loading XML bean definitions from class path resource [onjoraclejava.xml]
3월 02, 2014 3:51:36 오후 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
정보: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@960f0e: defining beans [dataSource,transactionManager,txAdvice,org.springframework.aop.config.internalAutoProxyCreator,onjPointCut,org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0,onjDao,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,onjService,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
7782CLARK10
7839KING10
7934MILLER10
3월 02, 2014 3:51:37 오후 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
정보: Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml]
3월 02, 2014 3:51:37 오후 org.springframework.jdbc.support.SQLErrorCodesFactory <init>
정보: SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase]
Exception in thread "main" org.springframework.dao.DuplicateKeyException: PreparedStatementCallback; SQL [insert into emp(empno, ename, deptno) values (?, ?, ?)]; ORA-00001: 무결성 제약 조건(SCOTT.PK_EMP)에 위배됩니다
; nested exception is java.sql.SQLIntegrityConstraintViolationException: ORA-00001: 무결성 제약 조건(SCOTT.PK_EMP)에 위배됩니다
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:245)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:605)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:818)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:874)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:882)
at onj.edu.tr1.dao.OnjDao.insertEmps(OnjDao.java:57)
at onj.edu.tr1.dao.OnjDao$$FastClassByCGLIB$$64f4b819.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
at onj.edu.tr1.dao.OnjDao$$EnhancerByCGLIB$$783e0e20.insertEmps(<generated>)
at onj.edu.tr1.service.OnjService.insertEmps(OnjService.java:26)
at onj.edu.tr1.client.OnjEmpTest.main(OnjEmpTest.java:20)
Caused by: java.sql.SQLIntegrityConstraintViolationException: ORA-00001: 무결성 제약조건(SCOTT.PK_EMP)에 위배됩니다
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:85)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1034)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194)
at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:953)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1222)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3387)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3468)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1350)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:824)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:818)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:589)
... 18 more
8. EMP TABLE SELECT 결과
SQL> select empno, ename, sal from emp where deptno=10;
EMPNO ENAME SAL
---------- ---------- ----------
7782 CLARK 2450
7839 KING 5000
7934 MILLER 1300
9. 이번에는 OnjDao.java에서 중복된 데이터 입력하는 부분을 주석으로 막고 실행해보자.
[OnjDao.java]
package onj.edu.tr1.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import onj.edu.tr1.model.Emp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;
//JdbcDaoSupport클래스는 간단한 DataSource를 지원하기 위해 JdbcTemplate 클래스를 지원.
//jdbcTemplate은 DB연결, PrepatedStatement객체생성, 파라미터주입, SQL문장실행,
//DB접속종료등을 전담하며 getJdbcTemplate()을 통해 얻는다.
@Repository("onjDao")
public class OnjDao{
private JdbcTemplate jdbaTemplate;
@Autowired
public void setDataSource(DataSource dataSource){
this.jdbaTemplate = new JdbcTemplate(dataSource);
}
public List<Emp> getEmpByDeptno(int deptno) {
String sql = "select empno, ename, deptno from emp where deptno = ?";
List<Emp> list = jdbaTemplate.query(
sql,
new Object[] { deptno },
new RowMapper() {
public Object mapRow(ResultSet rs, int index) throws SQLException {
int empno = rs.getInt("empno");
String ename = rs.getString("ename");
int deptno = rs.getInt("deptno");
return new Emp(empno, ename, deptno);
}
}
);
return list;
}
public void insertEmps() throws Exception {
String sql = "insert into emp(empno, ename, deptno) values (?, ?, ?)";
jdbaTemplate.update(sql, new Object[] { 111, "Onj1" , 10});
jdbaTemplate.update(sql, new Object[] { 222, "Onj2", 10 });
jdbaTemplate.update(sql, new Object[] { 333, "Onj3", 10 });
//같은 데이터를 넣으면 키값이 중복되어 DataAccessException 발생(런타임예외)
//jdbaTemplate.update(sql, new Object[] { 333, "Onj3", 10 });
//throw new Exception();
}
}
[OnjEmpTest.java 실행 결과]
3월 02, 2014 4:02:52 오후 org.springframework.context.support.AbstractApplicationContext prepareRefresh
정보: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@bf7916: startup date [Sun Mar 02 16:02:52 KST 2014]; root of context hierarchy
3월 02, 2014 4:02:52 오후 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
정보: Loading XML bean definitions from class path resource [onjoraclejava.xml]
3월 02, 2014 4:02:52 오후 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
정보: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@466c30: defining beans [dataSource,transactionManager,txAdvice,org.springframework.aop.config.internalAutoProxyCreator,onjPointCut,org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0,onjDao,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,onjService,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
7782CLARK10
7839KING10
7934MILLER10
7782CLARK10
7839KING10
7934MILLER10
111Onj110
222Onj210
333Onj310
[ORACLE EMP 테이블 실행결과]
SQL> select empno, ename, deptno from emp where deptno = 10;
EMPNO ENAME DEPTNO
---------- ---------- ----------
7782 CLARK 10
7839 KING 10
7934 MILLER 10
111 Onj1 10
222 Onj2 10
333 Onj3 10
[OnjDao.java에서 //throw new Exception(); 부분 주석을 출고 테스트]
- onjoraclejava.xml에서 <tx:method name="*" propagation="REQUIRED" rollback-for="Exception"/>인 경우
트랜잭션은 롤백된다.
- onjoraclejava.xml에서 <tx:method name="*" propagation="REQUIRED“/>인 경우
트앤잭션은 롤백되지 않는다. 정상 commit된다.
확인해 보라.
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