事务控制模板类
通过实现接口:TransactionCallback
该模板类也需要在bean中配置Transcationmanger。
样例
bean.xml
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置事务模板对象-->
<bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="transactionManager"></property>
</bean>
<bean id="accountService" class="com.czy.service.impl.AccountServiceImpl">
<property name="dao" ref="accountDao"></property>
<property name="transactionTemplate" ref="transactionTemplate"></property>
</bean>
service
package com.czy.service.impl;
import com.czy.dao.AccountDao;
import com.czy.domain.Account;
import com.czy.service.AccountService;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
public class AccountServiceImpl implements AccountService {
private AccountDao dao;
private TransactionTemplate transactionTemplate;
public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
this.transactionTemplate = transactionTemplate;
}
public void setDao(AccountDao dao) {
this.dao = dao;
}
public Account findAccountById(Integer accountId) {
return dao.findAccountById(accountId);
}
public void transfer(String sourceName, String targetName, Float money) {
transactionTemplate.execute(new TransactionCallback<Object>() {
@Override
public Object doInTransaction(TransactionStatus transactionStatus) {
Account source = dao.findAccountByName(sourceName);
Account target = dao.findAccountByName(targetName);
source.setMoney(source.getMoney() - money);
dao.updateAccount(source);
int i = 1/0;
target.setMoney(target.getMoney() + money);
dao.updateAccount(target);
return null;
}
});
}
}
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