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我的代碼的接口服務豆類空如下：春3：@Autowired DAO字段與@Transactional註釋
DAO接口：
public interface SampleTblDao extends BaseDao<SampleTbl> {
/**
*
* @param mapper
* @param sampleKey
* @return
* @throws DataAccessException
*/
public SampleTbl selectSampleTbl(SampleKey sampleKey) throws DataAccessException;
}
DAO實現
public class SampleTblDaoImpl extends AbstractBaseDao<SampleTbl, SampleTblMapper> implements SampleTblDao {
public SampleTblDaoImpl() {
super(SampleTblMapper.class);
}
@Override
public SampleTbl selectSampleTbl(SampleKey sampleKey) throws DataAccessException {
return getSqlSession().getMapper(SampleTblMapper.class).selectSampleTbl(sampleKey);
}
}
業務-logic接口：
public interface SampleBusinessLogic {
/**
*
* @param sample
* @return
* @throws SampleException
*/
public Sample createSample(Sample sample) throws SampleException;
/**
*
* @param sample
* @return
* @throws SampleException
*/
public Sample updateSample(Sample sample) throws SampleException;
/**
* @param sampleKey
* @return
* @throws SampleException
*/
public Sample getSample(SampleKey sampleKey) throws SampleException;
}
業務邏輯的實現：
public class SampleBusinessLogicImpl implements SampleBusinessLogic {
/**
* sample table dao
*/
@Autowired
@Qualifier(value = "sampleTblDao")
private SampleTblDao sampleTblDao;
@Override
@Transactional(rollbackFor = Exception.class)
public Sample createSample(Sample sample) throws SampleException {
try {
// sample table
createSampleTbl(sample.getSampleTbl());
} catch (Exception e) {
List <String> messageList = new ArrayList <String>();
String message = "{createSample : " + "{itemId=" + sample.getSampleTbl().getItemId() + "}," + "{itemName=" + sample.getSampleTbl().getItemName() + "}}";
messageList.add("createShop system error");
throw new SampleException(message, messageList, e);
}
return sample;
}
@Override
@Transactional(rollbackFor = Exception.class)
public Sample updateSample(Sample sample) throws SampleException {
List <String> messageList = null;
String message = null;
try {
// global shop table
updateSampleTbl(sample.getSampleTbl());
} catch (IllegalDataException e) {
message = "{updateSample : " + "{itemId=" + sample.getSampleTbl().getItemId() + "}," + "{itemName=" + sample.getSampleTbl().getItemName() + "}}";
messageList = new ArrayList <String>();
messageList.add("updateSample illegal data error");
throw new SampleException(message, messageList, e);
} catch (Exception e) {
message = "{updateSample : " + "{itemId=" + sample.getSampleTbl().getItemId() + "}," + "{itemName=" + sample.getSampleTbl().getItemName() + "}}";
messageList = new ArrayList <String>();
messageList.add("updateSample system error");
throw new SampleException(message, messageList, e);
}
return sample;
}
@Override
@Transactional(rollbackFor = Exception.class, readOnly = true)
public Sample getSample(SampleKey sampleKey) throws SampleException {
Sample sample = new Sample();
String message = null;
List <String> messageList = null;
try {
sample.setSampleTbl(getSampleTbl(sampleKey));
} catch (DataNotFoundException e) {
message = "{getSample : " + "{itemId=" + sampleKey.getItemId() + "}}";
messageList = new ArrayList <String>();
messageList.add("getSample data not found error");
throw new SampleException(message, messageList, e);
} catch (Exception e) {
message = "{getSample : " + "{itemId=" + sampleKey.getItemId() + "}}";
messageList = new ArrayList <String>();
messageList.add("getSample system error");
throw new SampleException(message, messageList, e);
}
return sample;
}
/**
*
* @param sampleTbl
* @throws Exception
*/
private void createSampleTbl(SampleTbl sampleTbl) throws Exception {
sampleTbl.setItemId(new UUID().toString());
sampleTblDao.insert(sampleTbl);
}
/**
* @param sampleTbl
* @throws Exception
*/
private void updateSampleTbl(SampleTbl sampleTbl) throws Exception {
if (sampleTbl.isTransactionTarget(SampleTbl.class)) {
String message = null;
SampleKey sampleKey = new SampleKey();
sampleKey.setItemId(sampleTbl.getItemId());
SampleTbl sampleTblPre = sampleTblDao.selectSampleTbl(sampleKey);
if (sampleTblPre == null) {
// if sample table is empty
message = "{illegal data error:{sampleTblPre=null}}";
throw new IllegalDataException(message);
}
sampleTbl.setItemId(sampleTblPre.getItemId());
sampleTblDao.update(sampleTbl);
}
}
/**
* @param sampleKey
* @return
* @throws Exception
*/
private SampleTbl getSampleTbl(SampleKey sampleKey) throws Exception {
String message = "";
SampleTbl sampleTbl = sampleTblDao.selectSampleTbl(sampleKey);
if (sampleTbl == null) {
// if sample tbl is empty
message = "{data not found error:{SampleTbl=null}}";
throw new DataNotFoundException(message);
}
return sampleTbl;
}
public void setSampleTblDao(SampleTblDao sampleTblDao) {
this.sampleTblDao = sampleTblDao;
}
}
在應用程序上下文XML如下我已經配置豆類：
<bean id="sampleTblDao" class="com.rakuten.gep.sample.dao.impl.SampleTblDaoImpl" parent="baseDAO" scope="singleton">
<property name="namespace" value="com.rakuten.gep.sample.dao.mapper.SampleTblMapper" />
</bean>
<bean id="sampleBusinessLogic" class="com.rakuten.gep.sample.businesslogic.impl.SampleBusinessLogicImpl" scope="singleton"/>
<!-- and annocation based transaction is configured as follows -->
<tx:annotation-driven transaction-manager="trx-manager" proxy-target-class="true" />
<bean id="trx-manager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
但調試後，我意識到在自動裝配Autowired場「sampleTblDao「SampleBusinessLogicImpl '始終爲空。
任何提示？
當你使用它時，你如何獲得'SampleBusinessLogicImpl'實例？另外，您的註釋語法很奇怪 – 2014-01-16 06:52:50
我在Jersery Resources.I中使用它們，我使用@AutoWire註釋很好地注入它們。 –
我在配置中看不到'