Spring JDBCTemplate-并发调用
[英]Spring JDBCTemplate - Concurrent Calls
问题描述
I have created a executorservice to call the below listed query with different date ranges. 
我创建了executorservice来调用下面列出的具有不同日期范围的查询。 When I run it synchronously I don't see any errors. 同步运行时，看不到任何错误。 However when I initiate a number of threads in parallel to invoke getTransactionResult , I see 但是，当我并行启动多个线程来调用getTransactionResult时，我看到了
java.util.concurrent.ExecutionException: org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback;
at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at com.cloud.cloudreport.CloudReportApplication.lambda$1(CloudReportApplication.java:94) at java.util.ArrayList.forEach(ArrayList.java:1249) at com.cloud.cloudreport.CloudReportApplication.run(CloudReportApplication.java:92) at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776) at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:760) at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:747) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) at com.cloud.cloudreport.CloudReportApplication.main(CloudReportApplication.java:43) Caused by: org.springframework.dao.DataIntegrityViolationException: Prepa
at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:82) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:684) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:711) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:761) at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.queryForObject(NamedParameterJdbcTemplate.java:211) at com.cloud.cloudreport.dao.TransactionRespository.getTransactionResult(TransactionRespository.java:68) at com.cloud.cloudreport.dao.TransactionRespository$$FastClassBySpringCGLIB$$60dee75d
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1017) at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:655) at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:249) at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:566) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:215) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:58) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:776) at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:897) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1034) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3820) at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3867) at oracle.jdb
Are there any changes that i need to make to this in order to execute the method in parellel? 为了在并行环境中执行该方法，我需要对此进行任何更改吗？
@Repository
public class TransactionRespository {
private static Logger LOG = LoggerFactory.getLogger(TransactionRespository.class);
@Autowired
private NamedParameterJdbcTemplate jdbcTemplate;
private String transactionQuery = " query goes here";
public TransactionDetails getTransactionResult(String serviceName, String operationName, Date startDate,
Date endDate) {
SqlParameterSource namedParameters = new MapSqlParameterSource("serviceName", serviceName)
.addValue("operationName", operationName)
.addValue("startDate", new DateTime(startDate).toString("yyyy-MM-dd HH:mm:ss"))
.addValue("endDate", new DateTime(endDate).toString("yyyy-MM-dd HH:mm:ss"));
try{
return (TransactionDetails) this.jdbcTemplate.queryForObject(transactionQuery, namedParameters,(rs,rowNum)->{
TransactionDetails transactionDetails = new TransactionDetails();
TransactionResult result = new TransactionResult();
transactionDetails.setStartDate(new DateTime(startDate).toString("yyyy-MM-dd HH:mm:ss"));
transactionDetails.setEndDate(new DateTime(endDate).toString("yyyy-MM-dd HH:mm:ss"));
result.setSuccessfulTransactions(rs.getInt(2));
result.setFailedTransactions(rs.getInt(3));
Map<String,TransactionResult> operationResult = new TreeMap<>();
operationResult.put(operationName, result);
transactionDetails.setOperationResult(operationResult);
return transactionDetails;
});
} catch (EmptyResultDataAccessException e) {
LOG.debug("start date :: {} , end date :: {} " , new DateTime(startDate).toString("yyyy-MM-dd HH:mm:ss"), new DateTime(endDate).toString("yyyy-MM-dd HH:mm:ss"));
return null;
}
}
1 个解决方案
解决方案1
1 已采纳 2017-03-08 17:48:01
getTransactionResult(...) has no synchronization whatsoever. getTransactionResult（...）没有任何同步。 The container can manage stuff but it is up to you to keep order. 容器可以管理东西，但要取决于您要保持秩序。 The container has no way to know what needs synchronization. 容器无法知道需要同步的内容。
You can make the method synchronized or follow this 您可以使方法同步或遵循此方法
synchronized method or use spring @transactional? 同步方法还是使用spring @transactional？
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